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器件型号：SW-EK-TM4C1294XL Thread 中讨论的其他器件：EK-TM4C1294XL
工具/软件：Code Composer Studio
朋友们、您好！
IAM 工作 tm4c1294xl 评估套件我使用 uDMA 传输功能使用 ADC 采样序列发生器3。 我的问题是无法打印使用 ADC 采样的值。 IAM 通过此帖子附加代码可以帮助解决此问题。
#include
#include
include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "inc/hw_uart.h"
#include "driverlib/fpu.h"
#include
"driverlib/driverlib_interrupt.h"
#include "driverlib.driver.h"#driverlib/driverlib#driverlib.utils/ude/drivers.mdio.ide"#include
"drivers.mdio.mdio.ide"
#include "#include "#driver.h"#include "driverlib_util.mdio.md.ine"#include "#driver.h"
define MEM_buffer_size 1024
//#define UART_TXBUF_size 256
//#define UART_RXBUF_size 256
// static uint32_t g_ui8TxBuf[UART_TXBUF_SIZE]；
static uint32_t g_ui8RxBufA[1]；
static u32_uuuint32_uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu32_uuuuuuuuuuuuut
=静态32 uuuuuuuuuuuuuuuuuuuuuuint32uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
#elif defined (CCS)
#pragma DATA_ALIGN (pui8ControlTable、1024)
uint8_t pui8ControlTable[1024]；
#else
uint8_t pui8ControlTable[1024]__attribute__((aligned (1024)))；
#endif
#ifdef #ifdef #if_error__(uintu32_uu_uategr
u32uuuuuuuuuuuuuuuuuuuuuuuuatr uuui32 uuuuuuuuuuuuuuuuui32 uuuuuuuuuuuuuuuuuui32 uuuuuuuuuuuuuuuuuuint32 uuuuuu32 uuuuuuuuuuuuuuuui32 uuuuuuuuuuuuuuuuui32 uuuuuuuuuuuuuuuuuu32
ui16Idx < 1； ui16Idx++)
｛
UARTprintf ("在接收器端打印")；
UARTprintf (" hello receiver %d "、g_ui8RxBufA[ui16Idx])；
｝
ADCIntClearEx (ADC0_BASE、ADC_INT_DMA_SS0 | ADC_INT_UCC0_UCC0_UCC0_DE_AM_AM_UCC0)；(
UCC0_UCC0_UCC_UCC_UCC0_U80_UCC_UCC0_AM_AM_AM_U80_AM_AM_AM_U80_AM_AM_AM_AM_U80_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_TRU80_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_AM_TRU
if (uDMAChannelModeGet (uDMA_CHANGE_ADC0 | UDMA_ALT_SELECT)== UDMA_MODE_STOP)｛
//找到完整缓冲
区//重新设置到缓冲区
uDMAChannelTransferSet ((UDMA_CHANGE_ADC0 | UDMA_RESTON_DET)的 DMA 传输(uDMA_RESTON_U8B)、UFF_U0_U0_U0_U0_U0_UDB_U0_UFF_U0_U0_U0_U0_U0_U0_U0_U0_U0_U0_UFF_U0_U0_U0_U
｝
空
InitUART1传输(void)
｛
uint32_t div；
SysCtlPeripheralEnable (SYSCTL_Periph_ADC0)；
PeripherCtlPeripheralSleep Enable (SYSCTL_Periph_ADC0)；
ADCClockConfigSet (ADC0_BASE、ADC_CLOCK_SRC_PLL、ADC_CLOCK_ADC0_ADCLOCK)；ADCClock_FULL (ADCLOCK = ADCLOCK
)；ADCLOCK (ADC0) 3 /*SS0*/、ADC_TRIGGER_AYSTEUSH、0 /*Priority*/)；// SS0-SS3优先级必须始终不同
ADCSequenceStepConfigure (ADC0_BASE、3 / AttributeSS0*/、0、ADC_CTL_CH0 | ADC_CTL_END | ADC_CTL_IE)；//
ADC0 (ADCADC0每隔3个 ADCADCTRIE_ADCADCADC0个 ADCADCTRIE_ADCADCTRIE_ADCADC0个 ADCADCADCADCADCADCTRIE_CAST_MARS；/ ADC0 (ADCADCADCADCADCADCADCADCAD
UARC_ATTR_ALTSELECT | UDMA_ATTR_USEBURST |
UDMA_ATTR_HIGH_PRIOR_8
| UDMA_ATTR_REQMASK)；uDMAChannelControlSet (UDMA_CHANNE_ADC0 | UDMA_INC_ADDR_8 | UDA_ADDR_4
| UDA_ADDA_NOT_UDA_ADDR_8
| UDA_ADDA_ADDA_SDA_SOURCE_ADCC_0 | UART_UANCE_ADDR_8 | UDA_ADDR_NOT_UDA_ADDR_ADDR_8 | UDA_ADDR_ADDR_8 | UDA_ADDA_ADDA_INC_ADAP_ADAP_ADAP_ADAP_ADAP_8 | UART_UART_UART_ADDR_ADDR_ADDR_ADDR_8 | UANT_ADDR_ADDR_ADDR_ADDR_8 | UAN_ADAP_ADDR_8 | UAN_ADDR_ADDR
sizeof (g_ui8RxBufA))；
uDMAChannelTransferSet (uDMA_CHANGE_ADC0 | UDMA_ALT_SELECT、
UDMA_MODE_Pingpong、
(void *)(ADC0_BASE)、
g_ui8RxBufB、 sizeof (g_ui8RxBufB))；
uDMAChannelEnable (UDMA_CHANGE_ADC0)；
ADCIntEnableEx (ADC0_BASE、ADC_INT_DMA_SS3)；
IntEnable (INT_ADC0SS3)；
｝
空
配置 UART (void)
｛
SysCtlPeripheralEnable (SYSCTL_Periph_GPIOA)；
SysCtlPeripheralEnable (SYSCTL_Periph_UART0)；
SysCtlPeripheralSleep Enable (SYSCTL_Periph_UART0)；
GPIOPinConfigure (GPIO_PA0_U0RX)；
GPIO_Pin0TX (GPIO_Configure)；GPIO_PINTO_Configure)
GPIOPinTypeUART (GPIO_Porta_base、GPIO_PIN_0 | GPIO_PIN_1)；
UARTStdioConfig (0、115200、g_ui32SysClock)；
｝
int
main (void)
｛
static uint32_t ui32 PrevUARTCount = 0；
uint32_t ui32XfersCompleded；
uint32_t ui32BytesTransfed；
SysCtlPeripheralEnable (sysctl_Periph_GPIOE)；
GPIOTypeADC (GPIO_Porte _BASE、SysCtlPeripheralEnable) GPIO_PIN_3)；
g_ui32SysClock = MAP_SysCtlClockFreqSet ((SYSCTL_XTAL_25MHz |
SYSCL_MAIN |
SYSCTL_USE_PLL |
SYSCTION_CFG_VCO_480)、120000000)；
SysCtlPeripheralClockGating (TRUE)；SYSCTL_UST_OUTPLIT_480)、SYSCOPPEPTL_GPIOBJUST_GPIOPTL
(TRL (TRL)、GPIORT_GPIORT_OUTPLIT_TOPHOTPLK (GPIORT_VOPTL) GPIO_PIN_0)；
ConfigureUART ()；
UARTprintf ("Tiva C 系列@%u MHz\n\n"、g_ui32CtlClock / 1000000)；
UARTprintf ("cpu\tRemaining\tMemory\t\t UART\n")；
UARTprintf ("Usage\ttime\t Transfers\n\t
)；UARTSysCtlTransfers (")
SysCtlPeripheralSlepEnable (sysctl_Periph_UDMA)；
IntEnable (INT_UDMAERR)；
uDMAEnable（)；
uDMAControlBaseSet (pui8ControlTable)；
InitUART1 Transfer ()；
SysCtlSleep ()；
UARTprintf ("\n Stopped\n")；
IntDisable (INT_ADC0SS3)；
IntDisable (INT_UDMA)；
｝
此致
Prudhvi
