TM4C129 一个ADC通道下2个序列，只采一个，另一个不进中断-TI中文支持网

20路ADC全开，定时触发采集。AD0开了SS0采集8路，优先级0，SS1采集4路，优先级1；AD1开了SS0采集8路，优先级2。

现象是AD0的SS0和AD1的SS0都能进中断，AD0的SS1不进中断。把AD0SS1的优先级设为0，AD0SS0优先级调为1后，情况变为AD0的SS1和AD1的SS0都能进中断，AD0的SS0不进中断。

请问一下是什么原因，谢谢！

初始化代码如下：

SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);
SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC1);

SysCtlADCSpeedSet(SYSCTL_ADCSPEED_1MSPS);

ADCHardwareOversampleConfigure(ADC0_BASE,16);
ADCHardwareOversampleConfigure(ADC1_BASE,16);

ADCSequenceConfigure(ADC0_BASE, ADC_SS0, ADC_TRIGGER_TIMER, 0);
ADCSequenceStepConfigure(ADC0_BASE, ADC_SS0, ADC_STEP0, ADC_CTL_CH0);
ADCSequenceStepConfigure(ADC0_BASE, ADC_SS0, ADC_STEP1, ADC_CTL_CH1);
ADCSequenceStepConfigure(ADC0_BASE, ADC_SS0, ADC_STEP2, ADC_CTL_CH2);
ADCSequenceStepConfigure(ADC0_BASE, ADC_SS0, ADC_STEP3, ADC_CTL_CH3);
ADCSequenceStepConfigure(ADC0_BASE, ADC_SS0, ADC_STEP4, ADC_CTL_CH4);
ADCSequenceStepConfigure(ADC0_BASE, ADC_SS0, ADC_STEP5, ADC_CTL_CH5);
ADCSequenceStepConfigure(ADC0_BASE, ADC_SS0, ADC_STEP6, ADC_CTL_CH6);
ADCSequenceStepConfigure(ADC0_BASE, ADC_SS0, ADC_STEP7, ADC_CTL_CH7 | ADC_CTL_IE | ADC_CTL_END);//

ADCSequenceEnable(ADC0_BASE, ADC_SS0);
ADCIntClear(ADC0_BASE, ADC_SS0);
ADCIntEnable(ADC0_BASE, ADC_SS0);
IntEnable(INT_ADC0SS0);
ADCSequenceConfigure(ADC0_BASE, ADC_SS1, ADC_TRIGGER_TIMER, 1);
ADCSequenceStepConfigure(ADC0_BASE, ADC_SS1, ADC_STEP0, ADC_CTL_CH8);
ADCSequenceStepConfigure(ADC0_BASE, ADC_SS1, ADC_STEP1, ADC_CTL_CH9);
ADCSequenceStepConfigure(ADC0_BASE, ADC_SS1, ADC_STEP2, ADC_CTL_CH10);
ADCSequenceStepConfigure(ADC0_BASE, ADC_SS1, ADC_STEP3, ADC_CTL_CH11 | ADC_CTL_IE | ADC_CTL_END);
ADCSequenceEnable(ADC0_BASE, ADC_SS1);
ADCIntClear(ADC0_BASE, ADC_SS1);

ADCIntEnable(ADC0_BASE, ADC_SS1);

IntEnable(INT_ADC0SS1);

ADCSequenceConfigure(ADC1_BASE, ADC_SS0, ADC_TRIGGER_TIMER, 2);
ADCSequenceStepConfigure(ADC1_BASE, ADC_SS0, ADC_STEP0, ADC_CTL_CH12);
ADCSequenceStepConfigure(ADC1_BASE, ADC_SS0, ADC_STEP1, ADC_CTL_CH13);
ADCSequenceStepConfigure(ADC1_BASE, ADC_SS0, ADC_STEP2, ADC_CTL_CH14);
ADCSequenceStepConfigure(ADC1_BASE, ADC_SS0, ADC_STEP3, ADC_CTL_CH15);
ADCSequenceStepConfigure(ADC1_BASE, ADC_SS0, ADC_STEP4, ADC_CTL_CH16);
ADCSequenceStepConfigure(ADC1_BASE, ADC_SS0, ADC_STEP5, ADC_CTL_CH17);
ADCSequenceStepConfigure(ADC1_BASE, ADC_SS0, ADC_STEP6, ADC_CTL_CH18);
ADCSequenceStepConfigure(ADC1_BASE, ADC_SS0, ADC_STEP7, ADC_CTL_CH19 | ADC_CTL_IE | ADC_CTL_END);// ADCSequenceEnable(ADC1_BASE, ADC_SS0);
ADCIntClear(ADC1_BASE, ADC_SS0);
ADCIntEnable(ADC1_BASE, ADC_SS0);
IntEnable(INT_ADC1SS0);

中断代码如下：

void ADC0_SS0_IntHandler(){
ADCIntClear(ADC0_BASE, ADC_SS0);
Read_ADC0_SS0_Value();
}

void ADC0_SS1_IntHandler(){
ADCIntClear(ADC0_BASE, ADC_SS1);
Read_ADC0_SS1_Value();
}

void ADC1_SS0_IntHandler(){
ADCIntClear(ADC1_BASE, ADC_SS0);
Read_ADC1_SS0_Value();
}

Susan Yang：

很抱歉，目前手边没有129的开发板，所以不好测试您的代码。

但我之前有保存多通道的代码，您可以参考一下

//*****************************************************************************
//
// hello.c - Simple hello world example.
//
// Copyright (c) 2013-2014 Texas Instruments Incorporated.All rights reserved.
// Software License Agreement
//
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
//
// This is part of revision 2.1.0.12573 of the EK-TM4C1294XL Firmware Package.
//
//*****************************************************************************#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "inc/hw_adc.h"
#include "inc/hw_timer.h"
#include "driverlib/gpio.h"
#include "drivers/pinout.h"
#include "driverlib/pin_map.h"
#include "driverlib/rom.h"
#include "driverlib/rom_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/adc.h"
#include "driverlib/timer.h"
#include "driverlib/uart.h"
#include "utils/uartstdio.h"//*****************************************************************************
//
//! \addtogroup example_list
//! <h1>Hello World (hello)</h1>
//!
//! A very simple ``hello world'' example.It simply displays ``Hello World!''
//! on the UART and is a starting point for more complicated applications.
//!
//! Open a terminal with 115,200 8-N-1 to see the output for this demo.
//
//*****************************************************************************
uint32_t ui32adcValues[4],ui32Count,ui32adc0Values[1],ui32adc1Values[1],ui32adc2Values[1],ui32adc3Values[1];//*****************************************************************************
//
// System clock rate in Hz.
//
//*****************************************************************************
uint32_t g_ui32SysClock;//*****************************************************************************
//
// The error routine that is called if the driver library encounters an error.
//
//*****************************************************************************
#ifdef DEBUG
void
__error__(char *pcFilename, uint32_t ui32Line)
{
}
#endif//*****************************************************************************
//
// Configure the UART and its pins.This must be called before UARTprintf().
//
//*****************************************************************************
void
ConfigureADC(void)
{SysCtlPeripheralReset(SYSCTL_PERIPH_GPIOE);SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);SysCtlPeripheralReset(SYSCTL_PERIPH_ADC0);SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);SysCtlDelay(10);GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_3 | GPIO_PIN_2 | GPIO_PIN_1 | GPIO_PIN_0 );ADCClockConfigSet(ADC0_BASE, ADC_CLOCK_SRC_PLL | ADC_CLOCK_RATE_EIGHTH, 30);ADCSequenceStepConfigure(ADC0_BASE,0,0, ADC_CTL_CH0);ADCSequenceStepConfigure(ADC0_BASE,0,1, ADC_CTL_CH1);ADCSequenceStepConfigure(ADC0_BASE,0,2, ADC_CTL_CH2);ADCSequenceStepConfigure(ADC0_BASE,0,3, ADC_CTL_CH3 | ADC_CTL_IE | ADC_CTL_END);ADCSequenceEnable(ADC0_BASE, 0);ADCSequenceEnable(ADC0_BASE, 1);ADCSequenceEnable(ADC0_BASE, 2);ADCSequenceEnable(ADC0_BASE, 3);
}uint32_t
WaitAndReadADC(uint32_t *adcValues)
{ADCProcessorTrigger(ADC0_BASE,0);// Wait until the sample sequence has completed.while(!ADCIntStatus(ADC0_BASE, 0, false)) { }// Read the value from the ADC.return(ADCSequenceDataGet(ADC0_BASE, 0, adcValues));
}uint32_t
WaitAndReadADC1(uint32_t *adcValues)
{ADCProcessorTrigger(ADC0_BASE,1);// Wait until the sample sequence has completed.while(!ADCIntStatus(ADC0_BASE, 1, false)) { }// Read the value from the ADC.return(ADCSequenceDataGet(ADC0_BASE, 1, adcValues));
}uint32_t
WaitAndReadADC2(uint32_t *adcValues)
{ADCProcessorTrigger(ADC0_BASE,2);// Wait until the sample sequence has completed.while(!ADCIntStatus(ADC0_BASE, 2, false)) { }// Read the value from the ADC.return(ADCSequenceDataGet(ADC0_BASE, 2, adcValues));
}uint32_t
WaitAndReadADC3(uint32_t *adcValues)
{ADCProcessorTrigger(ADC0_BASE,3);// Wait until the sample sequence has completed.while(!ADCIntStatus(ADC0_BASE, 3, false)) { }// Read the value from the ADC.return(ADCSequenceDataGet(ADC0_BASE, 3, adcValues));
}//*****************************************************************************
//
// Print "Hello World!" to the UART on the Intelligent UART Module.
//
//*****************************************************************************
int
main(void)
{//// Run from the PLL at 120 MHz.//g_ui32SysClock = SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |SYSCTL_OSC_MAIN | SYSCTL_USE_PLL |SYSCTL_CFG_VCO_480), 120000000);//// Configure the device pins.//PinoutSet();//// Enable the GPIO pins for the LED D1 (PN1).//ROM_GPIOPinTypeGPIOOutput(GPIO_PORTN_BASE, GPIO_PIN_1);//// Initialize the UART.//ConfigureADC();//// Hello!////// We are finished.Hang around flashing D1.//while(1){//// Turn on D1.////LEDWrite(CLP_D1, 1);//ui32Count = WaitAndReadADC0(ui32adc0Values);//ui32Count = WaitAndReadADC1(ui32adc1Values);//ui32Count = WaitAndReadADC2(ui32adc2Values);ui32Count = WaitAndReadADC(ui32adcValues);//// Delay for a bit.//// SysCtlDelay(g_ui32SysClock / 10 / 3);//// Turn off D1.////LEDWrite(CLP_D1, 0);//// Delay for a bit.//cank// SysCtlDelay(g_ui32SysClock / 10 / 3);}
}

参考链接为 https://e2e.ti.com/support/microcontrollers/other/f/908/t/476214#pi320995=1

TM4C129 一个ADC通道下2个序列，只采一个，另一个不进中断

Susan Yang：

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