#include <stdbool.h>
#include "stdbool.h"
#include <stdint.h>
#include <stdio.h>
#include <start.h>
#include <lxy_ADC.h>
#include <lxy_PWM.h>
#include "inc/hw_udma.h"
#include "inc/hw_gpio.h"
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_sysctl.h"
#include "inc/hw_types.h"
#include "inc/hw_uart.h"
#include "inc/hw_nvic.h"
#include "inc/hw_flash.h"
#include "inc/hw_adc.h"
#include "inc/hw_sysctl.h"
#include "inc/hw_timer.h"
#include "inc/hw_pwm.h"
#include "driverlib/debug.h"
#include "driverlib/interrupt.h"
#include "driverlib/rom.h"
#include "driverlib/rom_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
#include "driverlib/gpio.h"
#include "driverlib/timer.h"
#include "driverlib/pin_map.h"
#include "driverlib/systick.h"
#include "driverlib/ssi.h"
#include "driverlib/adc.h"
#include "driverlib/cpu.h"
#include "driverlib/uart.h"
#include "driverlib/pwm.h"
#include "driverlib/udma.h"
#include "uc1701.h"
#include "hw_uc1701.h"
#include "utils/uartstdio.h"
#define ADC_SAMPLE_BUF_SIZE 1024
enum BUFFER_STATUS
{
EMPTY,
FILLING,
FULL
};
//dma控制块需要1024字节对齐
static uint8_t ControlTable[1024] __attribute__ ((aligned(1024)));
uint16_t ADCBuffer1[ADC_SAMPLE_BUF_SIZE];
uint16_t ADCBuffer2[ADC_SAMPLE_BUF_SIZE];
static enum BUFFER_STATUS BufferStatus[2];
//ADC队列0中断函数
uint32_t adc_int_count = 0; //记录中断次数
void ADC0SS0_Handler(void)
{ int a;
adc_int_count++;
HWREG(ADC0_BASE + ADC_O_ISC) = HWREG(ADC0_BASE + ADC_O_RIS) & (1 << 8); //清中断
// if(BufferStatus[1]==FILLING)
// {ADCSequenceDataGet(ADC0_BASE ,0,ADCBuffer1);
// ADCBuffer1[adc_int_count%1024]=ADCBuffer1[0] * 3300/4096;
// }
// if(BufferStatus[0]==FILLING)
// {
// ADCSequenceDataGet(ADC0_BASE ,0,a);
// ADCBuffer1[adc_int_count%1024]=ADCBuffer1[0] * 3300/4096;
// }
//判断哪个buffer满了，进行切换
if ((uDMAChannelModeGet(UDMA_CHANNEL_ADC0 | UDMA_PRI_SELECT) ==
UDMA_MODE_STOP) && (BufferStatus[0] == FILLING)) {
BufferStatus[0] = FULL;
BufferStatus[1] = FILLING;
} else if ((uDMAChannelModeGet(UDMA_CHANNEL_ADC0 | UDMA_ALT_SELECT) ==
UDMA_MODE_STOP) && (BufferStatus[1] == FILLING)) {
BufferStatus[0] = FILLING;
BufferStatus[1] = FULL;
}
if(BufferStatus[0] == FULL) {
BufferStatus[0] = EMPTY;
//使能另一个传输块
uDMAChannelTransferSet(UDMA_CHANNEL_ADC0 | UDMA_PRI_SELECT,
UDMA_MODE_PINGPONG,
(void *)(ADC0_BASE + ADC_O_SSFIFO0),
ADCBuffer1, ADC_SAMPLE_BUF_SIZE);
//启动DMA通道
uDMAChannelEnable(UDMA_CHANNEL_ADC0 | UDMA_PRI_SELECT);
} else if(BufferStatus[1] == FULL) {
BufferStatus[1] = EMPTY;
uDMAChannelTransferSet(UDMA_CHANNEL_ADC0 | UDMA_ALT_SELECT,
UDMA_MODE_PINGPONG,
(void *)(ADC0_BASE + ADC_O_SSFIFO0),
ADCBuffer2, ADC_SAMPLE_BUF_SIZE);
uDMAChannelEnable(UDMA_CHANNEL_ADC0 | UDMA_ALT_SELECT);
}
}
int main()
{
BufferStatus[0] = FILLING;
BufferStatus[1] = EMPTY;
SysCtlClockSet(SYSCTL_SYSDIV_2_5 |SYSCTL_XTAL_16MHZ|SYSCTL_USE_PLL|SYSCTL_OSC_MAIN);
//使能外设时钟
SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);
SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
//GPIO配置
GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_3);
uDMAEnable();
uDMAControlBaseSet(ControlTable); //设置控制块
//清除通道属性
uDMAChannelAttributeDisable(UDMA_CHANNEL_ADC0,
UDMA_ATTR_ALTSELECT | UDMA_ATTR_HIGH_PRIORITY |
UDMA_ATTR_REQMASK);
//配置主控制块参数，16位数据宽度、源地址不自增、目标地址16bit自增、每次都触发。
uDMAChannelControlSet(UDMA_CHANNEL_ADC0 | UDMA_PRI_SELECT, UDMA_SIZE_16 |
UDMA_SRC_INC_NONE | UDMA_DST_INC_16 | UDMA_ARB_1);
//配置副控制块参数，16位数据宽度、源地址不自增、目标地址16bit自增、每次都触发。
uDMAChannelControlSet(UDMA_CHANNEL_ADC0 | UDMA_ALT_SELECT, UDMA_SIZE_16 |
UDMA_SRC_INC_NONE | UDMA_DST_INC_16 | UDMA_ARB_1);
//主控制块发送设置，ping-pong模式、源地址(void *)(ADC0_BASE + ADC_O_SSFIFO0)、
//目标地址ADCBuffer1、传输大小ADC_SAMPLE_BUF_SIZE
uDMAChannelTransferSet(UDMA_CHANNEL_ADC0 | UDMA_PRI_SELECT,
UDMA_MODE_PINGPONG,
(void *)(ADC0_BASE + ADC_O_SSFIFO0),
ADCBuffer1, ADC_SAMPLE_BUF_SIZE);
//副控制块发送设置，ping-pong模式、源地址(void *)(ADC0_BASE + ADC_O_SSFIFO0)、
//目标地址ADCBuffer2、传输大小ADC_SAMPLE_BUF_SIZE
uDMAChannelTransferSet(UDMA_CHANNEL_ADC0 | UDMA_ALT_SELECT,
UDMA_MODE_PINGPONG,
(void *)(ADC0_BASE + ADC_O_SSFIFO0),
ADCBuffer2, ADC_SAMPLE_BUF_SIZE);
//设置连续传输
uDMAChannelAttributeEnable(UDMA_CHANNEL_ADC0, UDMA_ATTR_USEBURST);
//开启DMA通道
uDMAChannelEnable(UDMA_CHANNEL_ADC0);
// ADC0时钟配置 全速1M PIOSC为16M时钟
ADCClockConfigSet(ADC0_BASE, ADC_CLOCK_SRC_PIOSC | ADC_CLOCK_RATE_FULL, 1);
//关闭队列0中断
IntDisable(INT_ADC0SS0);
ADCIntDisable(ADC0_BASE, 0);
//关闭队列0
ADCSequenceDisable(ADC0_BASE, 0);
ADCSequenceConfigure(ADC0_BASE, 0, ADC_TRIGGER_TIMER, 0); //定时器触发
// ADCSequenceConfigure(ADC0_BASE, 0, ADC_TRIGGER_ALWAYS, 0); //连续不断采样 全速
//队列0，编号0，通道ch0|最后一个采样通道
ADCSequenceStepConfigure(ADC0_BASE, 0, 0, ADC_CTL_CH0 | ADC_CTL_END);
//使能队列0
ADCSequenceEnable(ADC0_BASE, 0);
//使能队列0的dma
ADCSequenceDMAEnable(ADC0_BASE, 0);
//开启队列0的dma传输完成中断
ADCIntEnableEx(ADC0_BASE, ADC_INT_DMA_SS0);
//开启队列0中断控制器
IntEnable(INT_ADC0SS0);
//使能处理器中断控制器
IntMasterEnable();
//定时器配置
TimerConfigure(TIMER0_BASE, TIMER_CFG_SPLIT_PAIR | TIMER_CFG_A_PERIODIC);
//16k频率
TimerLoadSet(TIMER0_BASE, TIMER_A, (SysCtlClockGet()/16000) - 1);
//使能定时器A触发
TimerControlTrigger(TIMER0_BASE, TIMER_A, true);
TimerIntEnable(TIMER0_BASE,TIMER_TIMA_TIMEOUT);
TimerIntRegister(TIMER0_BASE,TIMER_A,ADC0SS0_Handler);
//使能定时器
TimerEnable(TIMER0_BASE, TIMER_A);
while(1)
{
}
}