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[参考译文] TM4C1294NCPDT：多个 ADC 通道问题

admin
Guru**** 2524550 points


请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/993089/tm4c1294ncpdt-multiple-adc-channels-issue

器件型号：TM4C1294NCPDT

你(们)好

我使用 中断读取8个 ADC0通道， 但我还需要9个通道，我尝试使用不同的采样序列发生器、单独的 ISR 以及轮询所有 这些方法都不会为我提供第9个通道 ADC 数据。 这位于端口 E CH_8上，是否存在配置问题或缺少任何内容。

我的代码基于 Tiva 系列 SDK 版本：- TivaWare_C_Series-2.2.0.295

编译器是：- TI v 18.12.2.LTS

请帮助。

此致

霍迪达斯 

#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>

//#include "inc/tm4c1294ncpdt.h"
#include "driverlib/comp.h"
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_adc.h"
#include "inc/hw_types.h"
#include "inc/hw_udma.h"
#include "inc/hw_emac.h"
#include "driverlib/debug.h"
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
#include "driverlib/adc.h"
#include "driverlib/udma.h"
#include "driverlib/emac.h"
#include "driverlib/flash.h"
//#define TARGET_IS_BLIZZARD_RB1
#include "driverlib/rom.h"
#include "driverlib/ssi.h"


void gpioread();

//================================SPI SLAVE INITIALIZATION====================//
#define NUM_SSI_DATA    5

uint32_t pui32DataTx[NUM_SSI_DATA];
uint32_t pui32DataRx[NUM_SSI_DATA];
uint32_t ui32Index;


uint32_t adcBuffer2[9];

uint32_t ui32SysClock=0;

bool in[25];
//
// Interrupt Handler ADC0SS0
//



void ADC0IntHandler(void)
{
    // Clear interrupt Flag
    ADCIntClear(ADC0_BASE, 0);
    ADCSequenceDataGet(ADC0_BASE, 0, adcBuffer2);
}

void adc2_init(void)
 {

     uint32_t adcClock=0, adcDiv=0;
        // Enable the ADC0 peripheral
        SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);


        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
        GPIOPinTypeADC(GPIO_PORTD_BASE, GPIO_PIN_7 | GPIO_PIN_6 | GPIO_PIN_5 | GPIO_PIN_4 | GPIO_PIN_3| GPIO_PIN_2| GPIO_PIN_1 | GPIO_PIN_0);

        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
        GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_5);// | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3);
        // Configure the ADC to use PLL at 480 MHz with Full rate devided by 30 to get 16 MHz
        ADCClockConfigSet(ADC0_BASE, ADC_CLOCK_SRC_PLL | ADC_CLOCK_RATE_FULL, 15);


        ADCSequenceDisable(ADC0_BASE, 0);
        ADCSequenceDisable(ADC0_BASE, 1);
        // Read the current ADC configuration
        adcClock=ADCClockConfigGet(ADC0_BASE, &adcDiv);
        // Hardware averageing: by a faktor of 2 -> 2,4,8,16,32,64
        ADCHardwareOversampleConfigure(ADC0_BASE, 8);
        // ADC voltage-lvl reference set to intern
        ADCReferenceSet(ADC0_BASE, ADC_REF_INT);
        ADCReferenceSet(ADC0_BASE, ADC_REF_INT);
        // ADC Sequencer config: Source ADC0, Sequencer 0, Trigger: always, priority: 0
        ADCSequenceConfigure(ADC0_BASE, 0, ADC_TRIGGER_ALWAYS, 0);
        ADCSequenceConfigure(ADC0_BASE, 1, ADC_TRIGGER_ALWAYS, 1);


        // ADC Sequencer step
        // 1. Source-ADC -> ADC0_BASE
        // 2. Source-Sequencer -> 0
        // 3. Sample-Value depends in the depth of the FIFO, by Sequencer 0 it is up to 7 (0-7)
        // 4. Config-> select input-channel AINx, interrupt specification
        //

        ADCSequenceStepConfigure(ADC0_BASE, 1, 0, ADC_CTL_CH8 |ADC_CTL_IE|ADC_CTL_END);

        ADCSequenceStepConfigure(ADC0_BASE, 0, 0, ADC_CTL_CH4);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 1, ADC_CTL_CH5);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 2, ADC_CTL_CH6);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 3, ADC_CTL_CH7);

        ADCSequenceStepConfigure(ADC0_BASE, 0, 4, ADC_CTL_CH12);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 5, ADC_CTL_CH13);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 6, ADC_CTL_CH14);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 7, ADC_CTL_CH15 |ADC_CTL_IE|ADC_CTL_END );


        IntPrioritySet(INT_ADC0SS0, 0x00);

           // ADC0SS0 Interrupt source
           ADCIntRegister(ADC0_BASE, 0, ADC0IntHandler);

           // Register Interrupt to NVIC
           IntRegister(INT_ADC0SS0, ADC0IntHandler);

           // ADC0 enable
           ADCIntEnable(ADC0_BASE, 0);

           // Interrupt ADC0SS0 enable
           IntEnable(INT_ADC0SS0);

           // Enable Global Interrupts
           IntMasterEnable();

           ADCSequenceEnable(ADC0_BASE, 0);
           ADCSequenceEnable(ADC0_BASE, 1);

 }

void SPI_Init()
{
    // The SSI0 peripheral must be enabled for use.
    SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI0);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);

    GPIOPinConfigure(GPIO_PA2_SSI0CLK);
    GPIOPinConfigure(GPIO_PA3_SSI0FSS);
    GPIOPinConfigure(GPIO_PA4_SSI0XDAT0);
    GPIOPinConfigure(GPIO_PA5_SSI0XDAT1);
    GPIOPinTypeSSI(GPIO_PORTA_BASE, GPIO_PIN_5 | GPIO_PIN_4 | GPIO_PIN_3 | GPIO_PIN_2);
    // Configure and enable the SSI port for SPI master mode.  Use SSI0, system clock supply, idle clock level low and active low clock in
    // freescale SPI mode, master mode, 1MHz SSI frequency, and 8-bit data.
    // For SPI mode, you can set the polarity of the SSI clock when the SSI unit is idle.  You can also configure what clock edge you want to
    // capture data on.  Please reference the datasheet for more information on the different SPI modes.
    SSIConfigSetExpClk(SSI0_BASE, ui32SysClock, SSI_FRF_MOTO_MODE_0, SSI_MODE_SLAVE, 1000000, 8);

    // Enable the SSI0 module.
    SSIEnable(SSI0_BASE);
}

void digital_init()
   {




           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPION);     //  FOR LED
           GPIOPinTypeGPIOOutput(GPIO_PORTN_BASE, GPIO_PIN_1);
           GPIODirModeSet(GPIO_PORTN_BASE,GPIO_PIN_1,GPIO_DIR_MODE_OUT);
           GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, 0x02);
           GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, 0x02);

           //===========================Output Pins==============================//
           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
           GPIOPinTypeGPIOOutput(GPIO_PORTA_BASE, GPIO_PIN_0 |GPIO_PIN_1 );
           GPIODirModeSet(GPIO_PORTA_BASE,GPIO_PIN_0 |GPIO_PIN_1 ,GPIO_DIR_MODE_OUT);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
           //GPIOUnlockPin(GPIO_PORTC_BASE, GPIO_PIN_4);
           GPIOPinTypeGPIOOutput(GPIO_PORTC_BASE, GPIO_PIN_4 |GPIO_PIN_5 |GPIO_PIN_6|GPIO_PIN_7 );
           GPIODirModeSet(GPIO_PORTC_BASE,GPIO_PIN_4 |GPIO_PIN_5 |GPIO_PIN_6|GPIO_PIN_7,GPIO_DIR_MODE_OUT);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOK);
           GPIOPinTypeGPIOOutput(GPIO_PORTK_BASE, GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 |GPIO_PIN_5 |GPIO_PIN_6|GPIO_PIN_7 );
           GPIODirModeSet(GPIO_PORTK_BASE,GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 |GPIO_PIN_5 |GPIO_PIN_6|GPIO_PIN_7 ,GPIO_DIR_MODE_OUT);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOP);
           GPIOPinTypeGPIOOutput(GPIO_PORTP_BASE, GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 |GPIO_PIN_5 );
           GPIODirModeSet(GPIO_PORTP_BASE,GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 |GPIO_PIN_5 ,GPIO_DIR_MODE_OUT);


           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOQ);
           GPIOPinTypeGPIOOutput(GPIO_PORTQ_BASE, GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 );
           GPIODirModeSet(GPIO_PORTQ_BASE,GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 ,GPIO_DIR_MODE_OUT);


           //===========================Input Pins PORT L,M, F, G ,J==============================//
           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOL);
           GPIOPinTypeGPIOInput(GPIO_PORTL_BASE, GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7 );
           GPIODirModeSet(GPIO_PORTL_BASE,GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7,GPIO_DIR_MODE_IN);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOM);
           GPIOPinTypeGPIOInput(GPIO_PORTM_BASE, GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7 );
           GPIODirModeSet(GPIO_PORTM_BASE,GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7,GPIO_DIR_MODE_IN);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
           GPIOPinTypeGPIOInput(GPIO_PORTF_BASE, GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4);
           GPIODirModeSet(GPIO_PORTF_BASE,GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4,GPIO_DIR_MODE_IN);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOG);
           GPIOPinTypeGPIOInput(GPIO_PORTG_BASE, GPIO_PIN_0 |GPIO_PIN_1);
           GPIODirModeSet(GPIO_PORTG_BASE,GPIO_PIN_0 |GPIO_PIN_1,GPIO_DIR_MODE_IN);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOJ);
           GPIOPinTypeGPIOInput(GPIO_PORTJ_BASE, GPIO_PIN_0 |GPIO_PIN_1);
           GPIODirModeSet(GPIO_PORTJ_BASE,GPIO_PIN_0 |GPIO_PIN_1,GPIO_DIR_MODE_IN);
  }


void main(void)
{

    ui32SysClock=SysCtlClockFreqSet(SYSCTL_OSC_INT | SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480, 120000000);

    // ADC Init
    adc2_init();
    digital_init();
    SPI_Init();


    while(1)
    {

        GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, 0x02);

        GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_0, 0x01);
        GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_1, 0x02);

        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4, 0x10);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5, 0x20);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6, 0x40);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_7, 0x80);

        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_0, 0x01);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_1, 0x02);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_2, 0x04);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_3, 0x08);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_4, 0x10);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_5, 0x20);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_6, 0x40);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_7, 0x80);

        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_0, 0x01);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_1, 0x02);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_2, 0x04);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_3, 0x08);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_4, 0x10);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_5, 0x20);


        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_0, 0x01);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_1, 0x02);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_2, 0x04);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_3, 0x08);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_4, 0x10);

        SysCtlDelay(ui32SysClock/12);
        GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, 0x00);

        GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_0, 0x00);
        GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_1, 0x00);

        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4, 0x00);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5, 0x00);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6, 0x00);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_7, 0x00);

        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_0, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_1, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_2, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_3, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_4, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_5, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_6, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_7, 0x00);

        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_0, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_1, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_2, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_3, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_4, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_5, 0x00);

        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_0, 0x00);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_1, 0x00);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_2, 0x00);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_3, 0x00);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_4, 0x00);

        SysCtlDelay(ui32SysClock/12);

        //ADCSequenceDataGet(ADC0_BASE, 0, adcBuffer2);
        ADCSequenceDataGet(ADC0_BASE, 1, &adcBuffer2[9]);

        gpioread();
        pui32DataTx[0] = 's';
        pui32DataTx[1] = 'p';
        pui32DataTx[2] = 'I';
        pui32DataTx[3] = 'S';
        pui32DataTx[4] = '\n';

        for(ui32Index = 0; ui32Index < NUM_SSI_DATA; ui32Index++)
           {
               // Send the data using the "blocking" put function.  This function
               // will wait until there is room in the send FIFO before returning.
               // This allows you to assure that all the data you send makes it into
               // the send FIFO.
               //
               SSIDataPutNonBlocking(SSI0_BASE, pui32DataTx[ui32Index]);
               //SSIDataGet(SSI0_BASE, &pui32DataRx[ui32Index]);
               SSIDataGetNonBlocking(SSI0_BASE, &pui32DataRx[ui32Index]);
           }


    }

}


void gpioread()
{
    in[0]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_0);
    in[1]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_1);
    in[2]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_2);
    in[3]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_3);
    in[4]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_4);
    in[5]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_5);
    in[6]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_6);
    in[7]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_7);

    in[8]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_0);
    in[9]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_1);
    in[10]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_2);
    in[11]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_3);
    in[12]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_4);
    in[13]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_5);
    in[14]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_6);
    in[15]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_7);

    in[16]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_0);
    in[17]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_1);
    in[18]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_2);
    in[19]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_3);
    in[20]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_4);

    in[21]=GPIOPinRead(GPIO_PORTG_BASE, GPIO_PIN_0);
    in[22]=GPIOPinRead(GPIO_PORTG_BASE, GPIO_PIN_1);

    in[23]=GPIOPinRead(GPIO_PORTJ_BASE, GPIO_PIN_0);
    in[24]=GPIOPinRead(GPIO_PORTJ_BASE, GPIO_PIN_1);
}

  • 0
    TI__Guru**** 2524550 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    你(们)好  

    [引用 userid="289369" URL"~/support/microcontrollers/other/f/other-microcontrollers-forum/993089/tm4c1294ncpdt-multiple-adc-channels-issue ]I 尝试使用不同的采样序列发生器、单独的 ISR 以及轮询所有 这些方法都不会为我提供第9个通道 ADC 数据。 这位于端口 E CH_8上、[/报价]

    请注意、每个序列发生器都有自己的中断矢量。 见下表。 我注意到您只注册 了 INT_ADC0SS0的 ADC0IntHandler。 您会想念 ADC0SS1。  

  • 0
    TI__Guru**** 2524550 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您好！

    这种方式是否与代码中的方式一样？ 在这里、这也不起作用、我是寄存的独立 ISR 处理程序。  

    此致

    霍迪达斯 

    void ADC0IntHandler(void)
{
    // Clear interrupt Flag
    ADCIntClear(ADC0_BASE, 0);
    ADCSequenceDataGet(ADC0_BASE, 0, adcBuffer2);
}
void ADC1IntHandler(void)
{
    // Clear interrupt Flag
    ADCIntClear(ADC0_BASE, 1);
    ADCSequenceDataGet(ADC0_BASE, 1, &adcBuffer2[9]);
}
void adc2_init(void)
 {

     uint32_t adcClock=0, adcDiv=0;
        // Enable the ADC0 peripheral
        SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);


        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
        GPIOPinTypeADC(GPIO_PORTD_BASE, GPIO_PIN_7 | GPIO_PIN_6 | GPIO_PIN_5 | GPIO_PIN_4 | GPIO_PIN_3| GPIO_PIN_2| GPIO_PIN_1 | GPIO_PIN_0);

        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
        GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_5);// | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3);
        // Configure the ADC to use PLL at 480 MHz with Full rate devided by 30 to get 16 MHz
        ADCClockConfigSet(ADC0_BASE, ADC_CLOCK_SRC_PLL | ADC_CLOCK_RATE_FULL, 15);


        ADCSequenceDisable(ADC0_BASE, 0);
        ADCSequenceDisable(ADC0_BASE, 1);
        // Read the current ADC configuration
        adcClock=ADCClockConfigGet(ADC0_BASE, &adcDiv);
        // Hardware averageing: by a faktor of 2 -> 2,4,8,16,32,64
        ADCHardwareOversampleConfigure(ADC0_BASE, 8);
        // ADC voltage-lvl reference set to intern
        ADCReferenceSet(ADC0_BASE, ADC_REF_INT);

        // ADC Sequencer config: Source ADC0, Sequencer 0, Trigger: always, priority: 0
        ADCSequenceConfigure(ADC0_BASE, 0, ADC_TRIGGER_ALWAYS, 0);
        ADCSequenceConfigure(ADC0_BASE, 1, ADC_TRIGGER_ALWAYS, 1);


        // ADC Sequencer step
        // 1. Source-ADC -> ADC0_BASE
        // 2. Source-Sequencer -> 0
        // 3. Sample-Value depends in the depth of the FIFO, by Sequencer 0 it is up to 7 (0-7)
        // 4. Config-> select input-channel AINx, interrupt specification
        //

        ADCSequenceStepConfigure(ADC0_BASE, 1, 0, ADC_CTL_CH8 |ADC_CTL_IE|ADC_CTL_END);

        ADCSequenceStepConfigure(ADC0_BASE, 0, 0, ADC_CTL_CH4);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 1, ADC_CTL_CH5);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 2, ADC_CTL_CH6);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 3, ADC_CTL_CH7);

        ADCSequenceStepConfigure(ADC0_BASE, 0, 4, ADC_CTL_CH12);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 5, ADC_CTL_CH13);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 6, ADC_CTL_CH14);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 7, ADC_CTL_CH15 |ADC_CTL_IE|ADC_CTL_END );


        IntPrioritySet(INT_ADC0SS0, 0x00);
        IntPrioritySet(INT_ADC0SS1, 0x01);

           // ADC0SS0 Interrupt source
           ADCIntRegister(ADC0_BASE, 0, ADC0IntHandler);
           ADCIntRegister(ADC0_BASE, 1, ADC1IntHandler);

           // Register Interrupt to NVIC
           IntRegister(INT_ADC0SS0, ADC0IntHandler);
           IntRegister(INT_ADC0SS1, ADC1IntHandler);
           // ADC0 enable
           ADCIntEnable(ADC0_BASE, 0);
           ADCIntEnable(ADC0_BASE, 1);
           // Interrupt ADC0SS0 enable
           IntEnable(INT_ADC0SS0);
           IntEnable(INT_ADC0SS1);
           // Enable Global Interrupts
           IntMasterEnable();

           ADCSequenceEnable(ADC0_BASE, 0);
           ADCSequenceEnable(ADC0_BASE, 1);

 }

  • 0
    TI__Guru**** 2524550 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您好！

     我尝试修改现有的 TivaWare ADC 示例。 我在序列发生器1上使用 PE5 (AIN8)、但看不到任何问题。 您能否尝试以下示例并确认电路板上的 PE5 (AIN8)是否正常工作？ 如果我连接到 VDD、则 AIN8上的值为4095。  

    #include <stdbool.h>
#include <stdint.h>
#include "inc/hw_memmap.h"
#include "driverlib/adc.h"
#include "driverlib/gpio.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
#include "utils/uartstdio.h"

//*****************************************************************************
//
//! \addtogroup adc_examples_list
//! <h1>Single Ended ADC (single_ended)</h1>
//!
//! This example shows how to setup ADC0 as a single ended input and take a
//! single sample on AIN8/PE3.
//!
//! This example uses the following peripherals and I/O signals.  You must
//! review these and change as needed for your own board:
//! - ADC0 peripheral
//! - GPIO Port E peripheral (for AIN8 pin)
//! - AIN8 - PE5
//!
//! The following UART signals are configured only for displaying console
//! messages for this example.  These are not required for operation of the
//! ADC.
//! - UART0 peripheral
//! - GPIO Port A peripheral (for UART0 pins)
//! - UART0RX - PA0
//! - UART0TX - PA1
//!
//! This example uses the following interrupt handlers.  To use this example
//! in your own application you must add these interrupt handlers to your
//! vector table.
//! - None.
//
//*****************************************************************************

//*****************************************************************************
//
// This function sets up UART0 to be used for a console to display information
// as the example is running.
//
//*****************************************************************************
void
InitConsole(void)
{
    //
    // Enable GPIO port A which is used for UART0 pins.
    // TODO: change this to whichever GPIO port you are using.
    //
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);

    //
    // Configure the pin muxing for UART0 functions on port A0 and A1.
    // This step is not necessary if your part does not support pin muxing.
    // TODO: change this to select the port/pin you are using.
    //
    GPIOPinConfigure(GPIO_PA0_U0RX);
    GPIOPinConfigure(GPIO_PA1_U0TX);

    //
    // Enable UART0 so that we can configure the clock.
    //
    SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);

    //
    // Use the internal 16MHz oscillator as the UART clock source.
    //
    UARTClockSourceSet(UART0_BASE, UART_CLOCK_PIOSC);

    //
    // Select the alternate (UART) function for these pins.
    // TODO: change this to select the port/pin you are using.
    //
    GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);

    //
    // Initialize the UART for console I/O.
    //
    UARTStdioConfig(0, 115200, 16000000);
}

//*****************************************************************************
//
// Configure ADC0 for a single-ended input and a single sample.  Once the
// sample is ready, an interrupt flag will be set.  Using a polling method,
// the data will be read then displayed on the console via UART0.
//
//*****************************************************************************
int
main(void)
{
#if defined(TARGET_IS_TM4C129_RA0) ||                                         \
    defined(TARGET_IS_TM4C129_RA1) ||                                         \
    defined(TARGET_IS_TM4C129_RA2)
    uint32_t ui32SysClock;
#endif

    //
    // This array is used for storing the data read from the ADC FIFO. It
    // must be as large as the FIFO for the sequencer in use.  This example
    // uses sequence 3 which has a FIFO depth of 1.  If another sequence
    // was used with a deeper FIFO, then the array size must be changed.
    //
    uint32_t pui32ADC0Value[1];

    //
    // Set the clocking to run at 20 MHz (200 MHz / 10) using the PLL.  When
    // using the ADC, you must either use the PLL or supply a 16 MHz clock
    // source.
    // TODO: The SYSCTL_XTAL_ value must be changed to match the value of the
    // crystal on your board.
    //
#if defined(TARGET_IS_TM4C129_RA0) ||                                         \
    defined(TARGET_IS_TM4C129_RA1) ||                                         \
    defined(TARGET_IS_TM4C129_RA2)
    ui32SysClock = SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
                                       SYSCTL_OSC_MAIN |
                                       SYSCTL_USE_PLL |
                                       SYSCTL_CFG_VCO_480), 20000000);
#else
    SysCtlClockSet(SYSCTL_SYSDIV_10 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
                   SYSCTL_XTAL_16MHZ);
#endif

    //
    // Set up the serial console to use for displaying messages.  This is
    // just for this example program and is not needed for ADC operation.
    //
    InitConsole();

    //
    // Display the setup on the console.
    //
    UARTprintf("ADC ->\n");
    UARTprintf("  Type: Single Ended\n");
    UARTprintf("  Samples: One\n");
    UARTprintf("  Update Rate: 250ms\n");
    UARTprintf("  Input Pin: AIN8/PE5\n\n");

    //
    // The ADC0 peripheral must be enabled for use.
    //
    SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);

    //
    // For this example ADC0 is used with AIN8 on port E7.
    // The actual port and pins used may be different on your part, consult
    // the data sheet for more information.  GPIO port E needs to be enabled
    // so these pins can be used.
    // TODO: change this to whichever GPIO port you are using.
    //
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);

    //
    // Select the analog ADC function for these pins.
    // Consult the data sheet to see which functions are allocated per pin.
    // TODO: change this to select the port/pin you are using.
    //
    GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_5);

    //
    // Enable sample sequence 3 with a processor signal trigger.  Sequence 3
    // will do a single sample when the processor sends a signal to start the
    // conversion.  Each ADC module has 4 programmable sequences, sequence 0
    // to sequence 3.  This example is arbitrarily using sequence 3.
    //
    ADCSequenceConfigure(ADC0_BASE, 3, ADC_TRIGGER_PROCESSOR, 0);

    //
    // Configure step 0 on sequence 1.  Sample channel 8 (ADC_CTL_CH8) in
    // single-ended mode (default) and configure the interrupt flag
    // (ADC_CTL_IE) to be set when the sample is done.  Tell the ADC logic
    // that this is the last conversion on sequence 1 (ADC_CTL_END).  Sequence
    // 3 has only one programmable step.  Sequence 1 and 2 have 4 steps, and
    // sequence 0 has 8 programmable steps.  Since we are only doing a single
    // conversion using sequence 1 we will only configure step 0.  For more
    // information on the ADC sequences and steps, reference the datasheet.
    //
    ADCSequenceStepConfigure(ADC0_BASE, 1, 0, ADC_CTL_CH8 | ADC_CTL_IE |
                             ADC_CTL_END);

    //
    // Since sample sequence 1 is now configured, it must be enabled.
    //
    ADCSequenceEnable(ADC0_BASE, 1);

    //
    // Clear the interrupt status flag.  This is done to make sure the
    // interrupt flag is cleared before we sample.
    //
    ADCIntClear(ADC0_BASE, 1);

    //
    // Sample AIN8 forever.  Display the value on the console.
    //
    while(1)
    {
        //
        // Trigger the ADC conversion.
        //
        ADCProcessorTrigger(ADC0_BASE, 1);

        //
        // Wait for conversion to be completed.
        //
        while(!ADCIntStatus(ADC0_BASE, 1, false))
        {
        }

        //
        // Clear the ADC interrupt flag.
        //
        ADCIntClear(ADC0_BASE, 1);

        //
        // Read ADC Value.
        //
        ADCSequenceDataGet(ADC0_BASE, 1, pui32ADC0Value);

        //
        // Display the AIN8 (PE5) digital value on the console.
        //
        UARTprintf("AIN8 = %4d\r", pui32ADC0Value[0]);

        //
        // This function provides a means of generating a constant length
        // delay.  The function delay (in cycles) = 3 * parameter.  Delay
        // 250ms arbitrarily.
        //
#if defined(TARGET_IS_TM4C129_RA0) ||                                         \
    defined(TARGET_IS_TM4C129_RA1) ||                                         \
    defined(TARGET_IS_TM4C129_RA2)
        SysCtlDelay(ui32SysClock / 12);
#else
        SysCtlDelay(SysCtlClockGet() / 12);
#endif
    }
}

  • 0
    TI__Guru**** 2524550 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您好！

    不管怎样、我的问题 是9 个 ADC 通道。 当采用第9 个 ADC 通道时(任何通道为 第9个通道) 不起作用、并且所有其他 8个通道都起作用。 那么  、我应该 对 超过8 个 ADC 通道执行什么操作

    此致

    霍迪达斯

  • 0
    TI__Guru**** 2524550 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您好！

     我修改了最后一个程序的位、以便在序列0中对 AIN0进行8次采样、而第9个通道 AIN8位于序列发生器1中。 我将 AIN8连接到3.3V、将 AIN0连接到 GND。 我能够看到正确测量了 AIN8。  

    #include <stdbool.h>
#include <stdint.h>
#include "inc/hw_memmap.h"
#include "driverlib/adc.h"
#include "driverlib/gpio.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
#include "utils/uartstdio.h"

//*****************************************************************************
//
//! \addtogroup adc_examples_list
//! <h1>Single Ended ADC (single_ended)</h1>
//!
//! This example shows how to setup ADC0 as a single ended input and take a
//! single sample on AIN8/PE3.
//!
//! This example uses the following peripherals and I/O signals.  You must
//! review these and change as needed for your own board:
//! - ADC0 peripheral
//! - GPIO Port E peripheral (for AIN8 pin)
//! - AIN8 - PE5
//!
//! The following UART signals are configured only for displaying console
//! messages for this example.  These are not required for operation of the
//! ADC.
//! - UART0 peripheral
//! - GPIO Port A peripheral (for UART0 pins)
//! - UART0RX - PA0
//! - UART0TX - PA1
//!
//! This example uses the following interrupt handlers.  To use this example
//! in your own application you must add these interrupt handlers to your
//! vector table.
//! - None.
//
//*****************************************************************************

//*****************************************************************************
//
// This function sets up UART0 to be used for a console to display information
// as the example is running.
//
//*****************************************************************************
void
InitConsole(void)
{
    //
    // Enable GPIO port A which is used for UART0 pins.
    // TODO: change this to whichever GPIO port you are using.
    //
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);

    //
    // Configure the pin muxing for UART0 functions on port A0 and A1.
    // This step is not necessary if your part does not support pin muxing.
    // TODO: change this to select the port/pin you are using.
    //
    GPIOPinConfigure(GPIO_PA0_U0RX);
    GPIOPinConfigure(GPIO_PA1_U0TX);

    //
    // Enable UART0 so that we can configure the clock.
    //
    SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);

    //
    // Use the internal 16MHz oscillator as the UART clock source.
    //
    UARTClockSourceSet(UART0_BASE, UART_CLOCK_PIOSC);

    //
    // Select the alternate (UART) function for these pins.
    // TODO: change this to select the port/pin you are using.
    //
    GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);

    //
    // Initialize the UART for console I/O.
    //
    UARTStdioConfig(0, 115200, 16000000);
}

//*****************************************************************************
//
// Configure ADC0 for a single-ended input and a single sample.  Once the
// sample is ready, an interrupt flag will be set.  Using a polling method,
// the data will be read then displayed on the console via UART0.
//
//*****************************************************************************
int
main(void)
{
#if defined(TARGET_IS_TM4C129_RA0) ||                                         \
    defined(TARGET_IS_TM4C129_RA1) ||                                         \
    defined(TARGET_IS_TM4C129_RA2)
    uint32_t ui32SysClock;
#endif

    //
    // This array is used for storing the data read from the ADC FIFO. It
    // must be as large as the FIFO for the sequencer in use.  This example
    // uses sequence 3 which has a FIFO depth of 1.  If another sequence
    // was used with a deeper FIFO, then the array size must be changed.
    //
    uint32_t pui32ADC0Value[1];
    uint32_t pui32ADC0Value2[8];


    //
    // Set the clocking to run at 20 MHz (200 MHz / 10) using the PLL.  When
    // using the ADC, you must either use the PLL or supply a 16 MHz clock
    // source.
    // TODO: The SYSCTL_XTAL_ value must be changed to match the value of the
    // crystal on your board.
    //
#if defined(TARGET_IS_TM4C129_RA0) ||                                         \
    defined(TARGET_IS_TM4C129_RA1) ||                                         \
    defined(TARGET_IS_TM4C129_RA2)
    ui32SysClock = SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
                                       SYSCTL_OSC_MAIN |
                                       SYSCTL_USE_PLL |
                                       SYSCTL_CFG_VCO_480), 20000000);
#else
    SysCtlClockSet(SYSCTL_SYSDIV_10 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
                   SYSCTL_XTAL_16MHZ);
#endif

    //
    // Set up the serial console to use for displaying messages.  This is
    // just for this example program and is not needed for ADC operation.
    //
    InitConsole();

    //
    // Display the setup on the console.
    //
    UARTprintf("ADC ->\n");
    UARTprintf("  Type: Single Ended\n");
    UARTprintf("  Samples: One\n");
    UARTprintf("  Update Rate: 250ms\n");
    UARTprintf("  Input Pin: AIN8/PE5\n\n");

    //
    // The ADC0 peripheral must be enabled for use.
    //
    SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);

    //
    // For this example ADC0 is used with AIN8 on port E7.
    // The actual port and pins used may be different on your part, consult
    // the data sheet for more information.  GPIO port E needs to be enabled
    // so these pins can be used.
    // TODO: change this to whichever GPIO port you are using.
    //
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);

    //
    // Select the analog ADC function for these pins.
    // Consult the data sheet to see which functions are allocated per pin.
    // TODO: change this to select the port/pin you are using.
    //
    GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_5);
    GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_3);


    //
    // Enable sample sequence 3 with a processor signal trigger.  Sequence 3
    // will do a single sample when the processor sends a signal to start the
    // conversion.  Each ADC module has 4 programmable sequences, sequence 0
    // to sequence 3.  This example is arbitrarily using sequence 3.
    //
    ADCSequenceConfigure(ADC0_BASE, 1, ADC_TRIGGER_PROCESSOR, 0);
    ADCSequenceConfigure(ADC0_BASE, 0, ADC_TRIGGER_PROCESSOR, 0);

    //
    // Configure step 0 on sequence 1.  Sample channel 8 (ADC_CTL_CH8) in
    // single-ended mode (default) and configure the interrupt flag
    // (ADC_CTL_IE) to be set when the sample is done.  Tell the ADC logic
    // that this is the last conversion on sequence 1 (ADC_CTL_END).  Sequence
    // 3 has only one programmable step.  Sequence 1 and 2 have 4 steps, and
    // sequence 0 has 8 programmable steps.  Since we are only doing a single
    // conversion using sequence 1 we will only configure step 0.  For more
    // information on the ADC sequences and steps, reference the datasheet.
    //
    ADCSequenceStepConfigure(ADC0_BASE, 1, 0, ADC_CTL_CH8 | ADC_CTL_IE |
                             ADC_CTL_END);
    ADCSequenceStepConfigure(ADC0_BASE, 0, 0, ADC_CTL_CH0 );
    ADCSequenceStepConfigure(ADC0_BASE, 0, 1, ADC_CTL_CH0 );
    ADCSequenceStepConfigure(ADC0_BASE, 0, 2, ADC_CTL_CH0 );
    ADCSequenceStepConfigure(ADC0_BASE, 0, 3, ADC_CTL_CH0 );
    ADCSequenceStepConfigure(ADC0_BASE, 0, 4, ADC_CTL_CH0 );
    ADCSequenceStepConfigure(ADC0_BASE, 0, 5, ADC_CTL_CH0 );
    ADCSequenceStepConfigure(ADC0_BASE, 0, 6, ADC_CTL_CH0 );
    ADCSequenceStepConfigure(ADC0_BASE, 0, 7, ADC_CTL_CH0 | ADC_CTL_IE |
                             ADC_CTL_END);
    //
    // Since sample sequence 1 is now configured, it must be enabled.
    //
    ADCSequenceEnable(ADC0_BASE, 1);
    ADCSequenceEnable(ADC0_BASE, 0);


    //
    // Clear the interrupt status flag.  This is done to make sure the
    // interrupt flag is cleared before we sample.
    //
    ADCIntClear(ADC0_BASE, 1);
    ADCIntClear(ADC0_BASE, 0);


    //
    // Sample AIN8 forever.  Display the value on the console.
    //
    while(1)
    {
        //
        // Trigger the ADC conversion.
        //
        ADCProcessorTrigger(ADC0_BASE, 1);


        //
        // Wait for conversion to be completed.
        //
        while(!ADCIntStatus(ADC0_BASE, 1, false))
        {
        }

        //
        // Trigger the ADC conversion.
        //
        ADCProcessorTrigger(ADC0_BASE, 0);


        //
        // Wait for conversion to be completed.
        //
        while(!ADCIntStatus(ADC0_BASE, 0, false))
        {
        }

        //
        // Clear the ADC interrupt flag.
        //
        ADCIntClear(ADC0_BASE, 1);
        ADCIntClear(ADC0_BASE, 0);


        //
        // Read ADC Value.
        //
        ADCSequenceDataGet(ADC0_BASE, 1, pui32ADC0Value);
        ADCSequenceDataGet(ADC0_BASE, 0, pui32ADC0Value2);


        //
        // Display the AIN8 (PE5) digital value on the console.
        //
        UARTprintf("AIN8 = %4d\r\n", pui32ADC0Value[0]);
        UARTprintf("AIN0 = %4d\r\n", pui32ADC0Value2[0]);
        UARTprintf("AIN0 = %4d\r\n", pui32ADC0Value2[1]);
        UARTprintf("AIN0 = %4d\r\n", pui32ADC0Value2[2]);
        UARTprintf("AIN0 = %4d\r\n", pui32ADC0Value2[3]);
        UARTprintf("AIN0 = %4d\r\n", pui32ADC0Value2[4]);
        UARTprintf("AIN0 = %4d\r\n", pui32ADC0Value2[5]);
        UARTprintf("AIN0 = %4d\r\n", pui32ADC0Value2[6]);
        UARTprintf("AIN0 = %4d\r\n", pui32ADC0Value2[7]);





        //
        // This function provides a means of generating a constant length
        // delay.  The function delay (in cycles) = 3 * parameter.  Delay
        // 250ms arbitrarily.
        //
#if defined(TARGET_IS_TM4C129_RA0) ||                                         \
    defined(TARGET_IS_TM4C129_RA1) ||                                         \
    defined(TARGET_IS_TM4C129_RA2)
        SysCtlDelay(ui32SysClock / 12);
#else
        SysCtlDelay(SysCtlClockGet() / 12);
#endif
    }
}

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    TI__Guru**** 2524550 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您还会遇到编程错误。  

    语句 ADCSequenceDataGet (ADC0_BASE、1、&adcBuffer2[9])错误。 将 AIN8值放入数组的第10个元素中。 您应该已经被写为  ADCSequenceDataGet (ADC0_BASE、1、&adcBuffer2[8])；

  • 0
    TI__Guru**** 2524550 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您好！

    我知道并 已纠正该错误、但仍然存在问题。  此外 、我总共需要 9个 ADC 通道数据。 因为我有9 个不同的模拟输入。

  • 0
    TI__Guru**** 2524550 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

     我按原样运行代码并修改两个方面。 我 将 adcBuffer2[8]以及下面一行中序列发生器1的优先级固定在一起、当我连接到3.3V 时、我可以看到第9个通道(AIN8)转换为4095。 当您使用 ADC_TRIGGER_Always 时、不能将序列发生器1置于较低的优先级。 序列发生器0完成后、它将再次尝试重新启动、序列发生器1将永远不会获得采样的机会。 您必须使用相同的优先级、这样两个序列发生器就可以旋转。  

    ADCSequenceConfigure (ADC0_BASE、1、ADC_TRIGGER_ALE一直、0)；

     

    这是修改后的代码。 

    #include <stdint.h>
#include <stdbool.h>
#include <stdio.h>

//#include "inc/tm4c1294ncpdt.h"
#include "driverlib/comp.h"
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_adc.h"
#include "inc/hw_types.h"
#include "inc/hw_udma.h"
#include "inc/hw_emac.h"
#include "driverlib/debug.h"
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
#include "driverlib/adc.h"
#include "driverlib/udma.h"
#include "driverlib/emac.h"
#include "driverlib/flash.h"
//#define TARGET_IS_BLIZZARD_RB1
#include "driverlib/rom.h"
#include "driverlib/ssi.h"


void gpioread();

//================================SPI SLAVE INITIALIZATION====================//
#define NUM_SSI_DATA    5

uint32_t pui32DataTx[NUM_SSI_DATA];
uint32_t pui32DataRx[NUM_SSI_DATA];
uint32_t ui32Index;


uint32_t adcBuffer2[9];
uint32_t adcBufferSequnce1[1];

uint32_t ui32SysClock=0;

bool in[25];
//
// Interrupt Handler ADC0SS0
//



void ADC0IntHandler(void)
{
    // Clear interrupt Flag
    ADCIntClear(ADC0_BASE, 0);
    ADCSequenceDataGet(ADC0_BASE, 0, adcBuffer2);
}

void adc2_init(void)
 {

     uint32_t adcClock=0, adcDiv=0;
        // Enable the ADC0 peripheral
        SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);


        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
        GPIOPinTypeADC(GPIO_PORTD_BASE, GPIO_PIN_7 | GPIO_PIN_6 | GPIO_PIN_5 | GPIO_PIN_4 | GPIO_PIN_3| GPIO_PIN_2| GPIO_PIN_1 | GPIO_PIN_0);

        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
        GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_5);// | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3);
        // Configure the ADC to use PLL at 480 MHz with Full rate devided by 30 to get 16 MHz
        ADCClockConfigSet(ADC0_BASE, ADC_CLOCK_SRC_PLL | ADC_CLOCK_RATE_FULL, 15);


        ADCSequenceDisable(ADC0_BASE, 0);
        ADCSequenceDisable(ADC0_BASE, 1);
        // Read the current ADC configuration
        adcClock=ADCClockConfigGet(ADC0_BASE, &adcDiv);
        // Hardware averageing: by a faktor of 2 -> 2,4,8,16,32,64
        ADCHardwareOversampleConfigure(ADC0_BASE, 8);
        // ADC voltage-lvl reference set to intern
        ADCReferenceSet(ADC0_BASE, ADC_REF_INT);
        ADCReferenceSet(ADC0_BASE, ADC_REF_INT);
        // ADC Sequencer config: Source ADC0, Sequencer 0, Trigger: always, priority: 0
        ADCSequenceConfigure(ADC0_BASE, 0, ADC_TRIGGER_ALWAYS, 0);
        ADCSequenceConfigure(ADC0_BASE, 1, ADC_TRIGGER_ALWAYS, 0);


        // ADC Sequencer step
        // 1. Source-ADC -> ADC0_BASE
        // 2. Source-Sequencer -> 0
        // 3. Sample-Value depends in the depth of the FIFO, by Sequencer 0 it is up to 7 (0-7)
        // 4. Config-> select input-channel AINx, interrupt specification
        //

        ADCSequenceStepConfigure(ADC0_BASE, 1, 0, ADC_CTL_CH8 |ADC_CTL_IE|ADC_CTL_END);

        ADCSequenceStepConfigure(ADC0_BASE, 0, 0, ADC_CTL_CH4);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 1, ADC_CTL_CH5);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 2, ADC_CTL_CH6);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 3, ADC_CTL_CH7);

        ADCSequenceStepConfigure(ADC0_BASE, 0, 4, ADC_CTL_CH12);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 5, ADC_CTL_CH13);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 6, ADC_CTL_CH14);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 7, ADC_CTL_CH15 |ADC_CTL_IE|ADC_CTL_END );


        IntPrioritySet(INT_ADC0SS0, 0x00);

           // ADC0SS0 Interrupt source
           ADCIntRegister(ADC0_BASE, 0, ADC0IntHandler);

           // Register Interrupt to NVIC
           IntRegister(INT_ADC0SS0, ADC0IntHandler);

           // ADC0 enable
           ADCIntEnable(ADC0_BASE, 0);

           // Interrupt ADC0SS0 enable
           IntEnable(INT_ADC0SS0);

           // Enable Global Interrupts
           IntMasterEnable();

           ADCSequenceEnable(ADC0_BASE, 0);
           ADCSequenceEnable(ADC0_BASE, 1);

 }

void SPI_Init()
{
    // The SSI0 peripheral must be enabled for use.
    SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI0);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);

    GPIOPinConfigure(GPIO_PA2_SSI0CLK);
    GPIOPinConfigure(GPIO_PA3_SSI0FSS);
    GPIOPinConfigure(GPIO_PA4_SSI0XDAT0);
    GPIOPinConfigure(GPIO_PA5_SSI0XDAT1);
    GPIOPinTypeSSI(GPIO_PORTA_BASE, GPIO_PIN_5 | GPIO_PIN_4 | GPIO_PIN_3 | GPIO_PIN_2);
    // Configure and enable the SSI port for SPI master mode.  Use SSI0, system clock supply, idle clock level low and active low clock in
    // freescale SPI mode, master mode, 1MHz SSI frequency, and 8-bit data.
    // For SPI mode, you can set the polarity of the SSI clock when the SSI unit is idle.  You can also configure what clock edge you want to
    // capture data on.  Please reference the datasheet for more information on the different SPI modes.
    SSIConfigSetExpClk(SSI0_BASE, ui32SysClock, SSI_FRF_MOTO_MODE_0, SSI_MODE_SLAVE, 1000000, 8);

    // Enable the SSI0 module.
    SSIEnable(SSI0_BASE);
}

void digital_init()
   {




           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPION);     //  FOR LED
           GPIOPinTypeGPIOOutput(GPIO_PORTN_BASE, GPIO_PIN_1);
           GPIODirModeSet(GPIO_PORTN_BASE,GPIO_PIN_1,GPIO_DIR_MODE_OUT);
           GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, 0x02);
           GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, 0x02);

           //===========================Output Pins==============================//
           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
           GPIOPinTypeGPIOOutput(GPIO_PORTA_BASE, GPIO_PIN_0 |GPIO_PIN_1 );
           GPIODirModeSet(GPIO_PORTA_BASE,GPIO_PIN_0 |GPIO_PIN_1 ,GPIO_DIR_MODE_OUT);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
           //GPIOUnlockPin(GPIO_PORTC_BASE, GPIO_PIN_4);
           GPIOPinTypeGPIOOutput(GPIO_PORTC_BASE, GPIO_PIN_4 |GPIO_PIN_5 |GPIO_PIN_6|GPIO_PIN_7 );
           GPIODirModeSet(GPIO_PORTC_BASE,GPIO_PIN_4 |GPIO_PIN_5 |GPIO_PIN_6|GPIO_PIN_7,GPIO_DIR_MODE_OUT);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOK);
           GPIOPinTypeGPIOOutput(GPIO_PORTK_BASE, GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 |GPIO_PIN_5 |GPIO_PIN_6|GPIO_PIN_7 );
           GPIODirModeSet(GPIO_PORTK_BASE,GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 |GPIO_PIN_5 |GPIO_PIN_6|GPIO_PIN_7 ,GPIO_DIR_MODE_OUT);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOP);
           GPIOPinTypeGPIOOutput(GPIO_PORTP_BASE, GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 |GPIO_PIN_5 );
           GPIODirModeSet(GPIO_PORTP_BASE,GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 |GPIO_PIN_5 ,GPIO_DIR_MODE_OUT);


           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOQ);
           GPIOPinTypeGPIOOutput(GPIO_PORTQ_BASE, GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 );
           GPIODirModeSet(GPIO_PORTQ_BASE,GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 ,GPIO_DIR_MODE_OUT);


           //===========================Input Pins PORT L,M, F, G ,J==============================//
           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOL);
           GPIOPinTypeGPIOInput(GPIO_PORTL_BASE, GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7 );
           GPIODirModeSet(GPIO_PORTL_BASE,GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7,GPIO_DIR_MODE_IN);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOM);
           GPIOPinTypeGPIOInput(GPIO_PORTM_BASE, GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7 );
           GPIODirModeSet(GPIO_PORTM_BASE,GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7,GPIO_DIR_MODE_IN);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
           GPIOPinTypeGPIOInput(GPIO_PORTF_BASE, GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4);
           GPIODirModeSet(GPIO_PORTF_BASE,GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4,GPIO_DIR_MODE_IN);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOG);
           GPIOPinTypeGPIOInput(GPIO_PORTG_BASE, GPIO_PIN_0 |GPIO_PIN_1);
           GPIODirModeSet(GPIO_PORTG_BASE,GPIO_PIN_0 |GPIO_PIN_1,GPIO_DIR_MODE_IN);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOJ);
           GPIOPinTypeGPIOInput(GPIO_PORTJ_BASE, GPIO_PIN_0 |GPIO_PIN_1);
           GPIODirModeSet(GPIO_PORTJ_BASE,GPIO_PIN_0 |GPIO_PIN_1,GPIO_DIR_MODE_IN);
  }


void main(void)
{

    ui32SysClock=SysCtlClockFreqSet(SYSCTL_OSC_INT | SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480, 120000000);

    // ADC Init
    adc2_init();
    digital_init();
    SPI_Init();


    while(1)
    {

        GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, 0x02);

        GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_0, 0x01);
        GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_1, 0x02);

        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4, 0x10);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5, 0x20);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6, 0x40);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_7, 0x80);

        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_0, 0x01);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_1, 0x02);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_2, 0x04);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_3, 0x08);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_4, 0x10);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_5, 0x20);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_6, 0x40);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_7, 0x80);

        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_0, 0x01);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_1, 0x02);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_2, 0x04);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_3, 0x08);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_4, 0x10);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_5, 0x20);


        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_0, 0x01);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_1, 0x02);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_2, 0x04);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_3, 0x08);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_4, 0x10);

        SysCtlDelay(ui32SysClock/12);
        GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, 0x00);

        GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_0, 0x00);
        GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_1, 0x00);

        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4, 0x00);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5, 0x00);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6, 0x00);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_7, 0x00);

        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_0, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_1, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_2, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_3, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_4, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_5, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_6, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_7, 0x00);

        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_0, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_1, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_2, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_3, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_4, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_5, 0x00);

        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_0, 0x00);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_1, 0x00);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_2, 0x00);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_3, 0x00);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_4, 0x00);

        SysCtlDelay(ui32SysClock/12);

        //
        // Clear the ADC interrupt flag.
        //
        ADCIntClear(ADC0_BASE, 1);
        ADCIntClear(ADC0_BASE, 0);


        ADCSequenceDataGet(ADC0_BASE, 0, adcBuffer2);
        ADCSequenceDataGet(ADC0_BASE, 1, &adcBuffer2[8]);

        gpioread();
        pui32DataTx[0] = 's';
        pui32DataTx[1] = 'p';
        pui32DataTx[2] = 'I';
        pui32DataTx[3] = 'S';
        pui32DataTx[4] = '\n';

        for(ui32Index = 0; ui32Index < NUM_SSI_DATA; ui32Index++)
           {
               // Send the data using the "blocking" put function.  This function
               // will wait until there is room in the send FIFO before returning.
               // This allows you to assure that all the data you send makes it into
               // the send FIFO.
               //
               SSIDataPutNonBlocking(SSI0_BASE, pui32DataTx[ui32Index]);
               //SSIDataGet(SSI0_BASE, &pui32DataRx[ui32Index]);
               SSIDataGetNonBlocking(SSI0_BASE, &pui32DataRx[ui32Index]);
           }


    }

}


void gpioread()
{
    in[0]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_0);
    in[1]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_1);
    in[2]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_2);
    in[3]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_3);
    in[4]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_4);
    in[5]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_5);
    in[6]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_6);
    in[7]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_7);

    in[8]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_0);
    in[9]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_1);
    in[10]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_2);
    in[11]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_3);
    in[12]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_4);
    in[13]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_5);
    in[14]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_6);
    in[15]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_7);

    in[16]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_0);
    in[17]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_1);
    in[18]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_2);
    in[19]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_3);
    in[20]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_4);

    in[21]=GPIOPinRead(GPIO_PORTG_BASE, GPIO_PIN_0);
    in[22]=GPIOPinRead(GPIO_PORTG_BASE, GPIO_PIN_1);

    in[23]=GPIOPinRead(GPIO_PORTJ_BASE, GPIO_PIN_0);
    in[24]=GPIOPinRead(GPIO_PORTJ_BASE, GPIO_PIN_1);
}

  • 0
    TI__Guru**** 2524550 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您好！

    我已经尝试调试，发现第9个 ADC 通道正在工作，但它停止了其它8个通道。 我希望所有9个通道都能持续工作。  

    此致

    霍迪达斯

  • 0
    TI__Guru**** 2524550 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    当您有多个序列发生器时、始终使用触发器似乎并不理想。 在本例中、序列发生器1现在占用所有带宽。 我建议您使用处理器触发器。 使用修改后的代码、我可以看到所有9个通道都在工作。  

    #include <stdint.h>
#include <stdbool.h>
#include <stdio.h>

//#include "inc/tm4c1294ncpdt.h"
#include "driverlib/comp.h"
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_adc.h"
#include "inc/hw_types.h"
#include "inc/hw_udma.h"
#include "inc/hw_emac.h"
#include "driverlib/debug.h"
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
#include "driverlib/adc.h"
#include "driverlib/udma.h"
#include "driverlib/emac.h"
#include "driverlib/flash.h"
//#define TARGET_IS_BLIZZARD_RB1
#include "driverlib/rom.h"
#include "driverlib/ssi.h"


void gpioread();

//================================SPI SLAVE INITIALIZATION====================//
#define NUM_SSI_DATA    5

uint32_t pui32DataTx[NUM_SSI_DATA];
uint32_t pui32DataRx[NUM_SSI_DATA];
uint32_t ui32Index;


uint32_t adcBuffer2[9];
uint32_t adcBufferSequnce1[1];

uint32_t ui32SysClock=0;

bool in[25];
//
// Interrupt Handler ADC0SS0
//

uint32_t adc_seq0_flag = 0;

void ADC0IntHandler(void)
{
    // Clear interrupt Flag
    ADCIntClear(ADC0_BASE, 0);
    ADCSequenceDataGet(ADC0_BASE, 0, adcBuffer2);
    adc_seq0_flag = 1;
}

void adc2_init(void)
 {

     uint32_t adcClock=0, adcDiv=0;
        // Enable the ADC0 peripheral
        SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);


        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
        GPIOPinTypeADC(GPIO_PORTD_BASE, GPIO_PIN_7 | GPIO_PIN_6 | GPIO_PIN_5 | GPIO_PIN_4 | GPIO_PIN_3| GPIO_PIN_2| GPIO_PIN_1 | GPIO_PIN_0);

        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
        GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_5);// | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3);
        // Configure the ADC to use PLL at 480 MHz with Full rate devided by 30 to get 16 MHz
        ADCClockConfigSet(ADC0_BASE, ADC_CLOCK_SRC_PLL | ADC_CLOCK_RATE_FULL, 15);


        ADCSequenceDisable(ADC0_BASE, 0);
        ADCSequenceDisable(ADC0_BASE, 1);
        // Read the current ADC configuration
        adcClock=ADCClockConfigGet(ADC0_BASE, &adcDiv);
        // Hardware averageing: by a faktor of 2 -> 2,4,8,16,32,64
        ADCHardwareOversampleConfigure(ADC0_BASE, 8);
        // ADC voltage-lvl reference set to intern
        ADCReferenceSet(ADC0_BASE, ADC_REF_INT);
        ADCReferenceSet(ADC0_BASE, ADC_REF_INT);
        // ADC Sequencer config: Source ADC0, Sequencer 0, Trigger: always, priority: 0
        ADCSequenceConfigure(ADC0_BASE, 0, ADC_TRIGGER_PROCESSOR, 0);
        ADCSequenceConfigure(ADC0_BASE, 1, ADC_TRIGGER_PROCESSOR, 0);


        // ADC Sequencer step
        // 1. Source-ADC -> ADC0_BASE
        // 2. Source-Sequencer -> 0
        // 3. Sample-Value depends in the depth of the FIFO, by Sequencer 0 it is up to 7 (0-7)
        // 4. Config-> select input-channel AINx, interrupt specification
        //

        ADCSequenceStepConfigure(ADC0_BASE, 1, 0, ADC_CTL_CH8 |ADC_CTL_IE|ADC_CTL_END);

        ADCSequenceStepConfigure(ADC0_BASE, 0, 0, ADC_CTL_CH4);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 1, ADC_CTL_CH5);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 2, ADC_CTL_CH6);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 3, ADC_CTL_CH7);

        ADCSequenceStepConfigure(ADC0_BASE, 0, 4, ADC_CTL_CH12);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 5, ADC_CTL_CH13);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 6, ADC_CTL_CH14);
        ADCSequenceStepConfigure(ADC0_BASE, 0, 7, ADC_CTL_CH15 |ADC_CTL_IE|ADC_CTL_END );


        IntPrioritySet(INT_ADC0SS0, 0x00);

           // ADC0SS0 Interrupt source
           ADCIntRegister(ADC0_BASE, 0, ADC0IntHandler);

           // Register Interrupt to NVIC
           IntRegister(INT_ADC0SS0, ADC0IntHandler);

           // ADC0 enable
           ADCIntEnable(ADC0_BASE, 0);

           // Interrupt ADC0SS0 enable
           IntEnable(INT_ADC0SS0);

           // Enable Global Interrupts
           IntMasterEnable();

           ADCSequenceEnable(ADC0_BASE, 0);
           ADCSequenceEnable(ADC0_BASE, 1);

 }

void SPI_Init()
{
    // The SSI0 peripheral must be enabled for use.
    SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI0);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);

    GPIOPinConfigure(GPIO_PA2_SSI0CLK);
    GPIOPinConfigure(GPIO_PA3_SSI0FSS);
    GPIOPinConfigure(GPIO_PA4_SSI0XDAT0);
    GPIOPinConfigure(GPIO_PA5_SSI0XDAT1);
    GPIOPinTypeSSI(GPIO_PORTA_BASE, GPIO_PIN_5 | GPIO_PIN_4 | GPIO_PIN_3 | GPIO_PIN_2);
    // Configure and enable the SSI port for SPI master mode.  Use SSI0, system clock supply, idle clock level low and active low clock in
    // freescale SPI mode, master mode, 1MHz SSI frequency, and 8-bit data.
    // For SPI mode, you can set the polarity of the SSI clock when the SSI unit is idle.  You can also configure what clock edge you want to
    // capture data on.  Please reference the datasheet for more information on the different SPI modes.
    SSIConfigSetExpClk(SSI0_BASE, ui32SysClock, SSI_FRF_MOTO_MODE_0, SSI_MODE_SLAVE, 1000000, 8);

    // Enable the SSI0 module.
    SSIEnable(SSI0_BASE);
}

void digital_init()
   {




           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPION);     //  FOR LED
           GPIOPinTypeGPIOOutput(GPIO_PORTN_BASE, GPIO_PIN_1);
           GPIODirModeSet(GPIO_PORTN_BASE,GPIO_PIN_1,GPIO_DIR_MODE_OUT);
           GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, 0x02);
           GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, 0x02);

           //===========================Output Pins==============================//
           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
           GPIOPinTypeGPIOOutput(GPIO_PORTA_BASE, GPIO_PIN_0 |GPIO_PIN_1 );
           GPIODirModeSet(GPIO_PORTA_BASE,GPIO_PIN_0 |GPIO_PIN_1 ,GPIO_DIR_MODE_OUT);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
           //GPIOUnlockPin(GPIO_PORTC_BASE, GPIO_PIN_4);
           GPIOPinTypeGPIOOutput(GPIO_PORTC_BASE, GPIO_PIN_4 |GPIO_PIN_5 |GPIO_PIN_6|GPIO_PIN_7 );
           GPIODirModeSet(GPIO_PORTC_BASE,GPIO_PIN_4 |GPIO_PIN_5 |GPIO_PIN_6|GPIO_PIN_7,GPIO_DIR_MODE_OUT);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOK);
           GPIOPinTypeGPIOOutput(GPIO_PORTK_BASE, GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 |GPIO_PIN_5 |GPIO_PIN_6|GPIO_PIN_7 );
           GPIODirModeSet(GPIO_PORTK_BASE,GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 |GPIO_PIN_5 |GPIO_PIN_6|GPIO_PIN_7 ,GPIO_DIR_MODE_OUT);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOP);
           GPIOPinTypeGPIOOutput(GPIO_PORTP_BASE, GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 |GPIO_PIN_5 );
           GPIODirModeSet(GPIO_PORTP_BASE,GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 |GPIO_PIN_5 ,GPIO_DIR_MODE_OUT);


           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOQ);
           GPIOPinTypeGPIOOutput(GPIO_PORTQ_BASE, GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 );
           GPIODirModeSet(GPIO_PORTQ_BASE,GPIO_PIN_0 |GPIO_PIN_1 |GPIO_PIN_2 |GPIO_PIN_3 |GPIO_PIN_4 ,GPIO_DIR_MODE_OUT);


           //===========================Input Pins PORT L,M, F, G ,J==============================//
           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOL);
           GPIOPinTypeGPIOInput(GPIO_PORTL_BASE, GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7 );
           GPIODirModeSet(GPIO_PORTL_BASE,GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7,GPIO_DIR_MODE_IN);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOM);
           GPIOPinTypeGPIOInput(GPIO_PORTM_BASE, GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7 );
           GPIODirModeSet(GPIO_PORTM_BASE,GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7,GPIO_DIR_MODE_IN);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
           GPIOPinTypeGPIOInput(GPIO_PORTF_BASE, GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4);
           GPIODirModeSet(GPIO_PORTF_BASE,GPIO_PIN_0 |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4,GPIO_DIR_MODE_IN);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOG);
           GPIOPinTypeGPIOInput(GPIO_PORTG_BASE, GPIO_PIN_0 |GPIO_PIN_1);
           GPIODirModeSet(GPIO_PORTG_BASE,GPIO_PIN_0 |GPIO_PIN_1,GPIO_DIR_MODE_IN);

           SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOJ);
           GPIOPinTypeGPIOInput(GPIO_PORTJ_BASE, GPIO_PIN_0 |GPIO_PIN_1);
           GPIODirModeSet(GPIO_PORTJ_BASE,GPIO_PIN_0 |GPIO_PIN_1,GPIO_DIR_MODE_IN);
  }


void main(void)
{

    ui32SysClock=SysCtlClockFreqSet(SYSCTL_OSC_INT | SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480, 120000000);

    // ADC Init
    adc2_init();
    digital_init();
    SPI_Init();


    while(1)
    {

        GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, 0x02);

        GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_0, 0x01);
        GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_1, 0x02);

        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4, 0x10);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5, 0x20);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6, 0x40);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_7, 0x80);

        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_0, 0x01);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_1, 0x02);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_2, 0x04);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_3, 0x08);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_4, 0x10);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_5, 0x20);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_6, 0x40);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_7, 0x80);

        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_0, 0x01);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_1, 0x02);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_2, 0x04);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_3, 0x08);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_4, 0x10);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_5, 0x20);


        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_0, 0x01);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_1, 0x02);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_2, 0x04);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_3, 0x08);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_4, 0x10);

        SysCtlDelay(ui32SysClock/12);
        GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, 0x00);

        GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_0, 0x00);
        GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_1, 0x00);

        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4, 0x00);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5, 0x00);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6, 0x00);
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_7, 0x00);

        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_0, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_1, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_2, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_3, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_4, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_5, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_6, 0x00);
        GPIOPinWrite(GPIO_PORTK_BASE, GPIO_PIN_7, 0x00);

        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_0, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_1, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_2, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_3, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_4, 0x00);
        GPIOPinWrite(GPIO_PORTP_BASE, GPIO_PIN_5, 0x00);

        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_0, 0x00);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_1, 0x00);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_2, 0x00);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_3, 0x00);
        GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_4, 0x00);

        SysCtlDelay(ui32SysClock/12);
        ADCProcessorTrigger(ADC0_BASE, 0);
        while(adc_seq0_flag == 0);
        adc_seq0_flag = 0;

        ADCProcessorTrigger(ADC0_BASE, 1);
        while(!ADCIntStatus(ADC0_BASE, 1, false))
        {
        }

        //
        // Clear the ADC interrupt flag.
        //
        ADCIntClear(ADC0_BASE, 1);
        ADCIntClear(ADC0_BASE, 0);


        ADCSequenceDataGet(ADC0_BASE, 0, adcBuffer2);
        ADCSequenceDataGet(ADC0_BASE, 1, &adcBuffer2[8]);

        gpioread();
        pui32DataTx[0] = 's';
        pui32DataTx[1] = 'p';
        pui32DataTx[2] = 'I';
        pui32DataTx[3] = 'S';
        pui32DataTx[4] = '\n';

        for(ui32Index = 0; ui32Index < NUM_SSI_DATA; ui32Index++)
           {
               // Send the data using the "blocking" put function.  This function
               // will wait until there is room in the send FIFO before returning.
               // This allows you to assure that all the data you send makes it into
               // the send FIFO.
               //
               SSIDataPutNonBlocking(SSI0_BASE, pui32DataTx[ui32Index]);
               //SSIDataGet(SSI0_BASE, &pui32DataRx[ui32Index]);
               SSIDataGetNonBlocking(SSI0_BASE, &pui32DataRx[ui32Index]);
           }


    }

}


void gpioread()
{
    in[0]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_0);
    in[1]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_1);
    in[2]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_2);
    in[3]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_3);
    in[4]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_4);
    in[5]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_5);
    in[6]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_6);
    in[7]=GPIOPinRead(GPIO_PORTL_BASE, GPIO_PIN_7);

    in[8]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_0);
    in[9]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_1);
    in[10]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_2);
    in[11]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_3);
    in[12]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_4);
    in[13]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_5);
    in[14]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_6);
    in[15]=GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_7);

    in[16]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_0);
    in[17]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_1);
    in[18]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_2);
    in[19]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_3);
    in[20]=GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_4);

    in[21]=GPIOPinRead(GPIO_PORTG_BASE, GPIO_PIN_0);
    in[22]=GPIOPinRead(GPIO_PORTG_BASE, GPIO_PIN_1);

    in[23]=GPIOPinRead(GPIO_PORTJ_BASE, GPIO_PIN_0);
    in[24]=GPIOPinRead(GPIO_PORTJ_BASE, GPIO_PIN_1);
}
     

  • 0
    TI__Guru**** 2524550 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您好！

    感谢您的深入支持。 我 对它进行了测试、工作正常。 此外、我 还使用  触发始终和中断的8个通道以及 使用处理器触发的第9个通道进行了测试。 这符合我 的应用标准。

    此致

    霍迪达斯