官网例程都是单通道，有没有大神有做过多通道的可以指教一下，目前想用ADC8--PB0,ADC9--PB1两个ADC进行双通道采样，例如在DMA-ADC例程内如何设置？
/*!
* @file main.c
*
* @brief Main program body
*
* @version V1.0.1
*
* @date 2021-07-01
*
* @attention
*
* Copyright (C) 2020-2022 Geehy Semiconductor
*
* You may not use this file except in compliance with the
* GEEHY COPYRIGHT NOTICE (GEEHY SOFTWARE PACKAGE LICENSE).
*
* The program is only for reference, which is distributed in the hope
* that it will be usefull and instructional for customers to develop
* their software. Unless required by applicable law or agreed to in
* writing, the program is distributed on an "AS IS" BASIS, WITHOUT
* ANY WARRANTY OR CONDITIONS OF ANY KIND, either express or implied.
* See the GEEHY SOFTWARE PACKAGE LICENSE for the governing permissions
* and limitations under the License.
*/
#include "Board.h"
#include "stdio.h"
#include "apm32f0xx_gpio.h"
#include "apm32f0xx_misc.h"
#include "apm32f0xx_dma.h"
#include "apm32f0xx_adc.h"
/** printf function configs to USART2*/
#define DEBUG_USART USART1
/** define Tramismit Buf Size*/
#define BufSize 0x100
/** Delay */
void Delay(void);
/** ADC Init */
void APM_MINI_ADC_Init(void);
/** DMA Init */
void APM_MINI_DMA_Init(uint32_t* Buf);
/*!
* @brief Main program
*
* @param None
*
* @retval None
*
* @note
*/
int main(void)
{
/** DMA value from ADC*/
uint32_t DMA_ConvertedValue = 0;
/** ADC convert to volatage*/
float ADC_ConvertedValue = 0;
APM_MINI_LEDInit(LED2);
APM_MINI_LEDInit(LED3);
APM_MINI_COMInit(COM1);
APM_MINI_ADC_Init();
APM_MINI_DMA_Init(&DMA_ConvertedValue);
/** start conversion*/
while(!ADC_ReadStatusFlag(ADC_FLAG_ADRDY));
ADC_StartConversion();
for(;;)
{
/** convert value*/
ADC_ConvertedValue = (float)DMA_ConvertedValue/4096*3.3;
printf("\r\n AD value = 0x%04X \r\n", DMA_ConvertedValue);
printf("\r\n AD value = %f V \r\n" ,ADC_ConvertedValue);
Delay();
}
}
/*!
* @brief DMA_ADC Init
*
* @param None
*
* @retval None
*
* @note
*/
void APM_MINI_ADC_Init()
{
GPIO_Config_T gpioConfig;
ADC_Config_T adcConfig;
/** RCM Enable*/
RCM_EnableAHBPeriphClock(RCM_AHB_PERIPH_GPIOB);
RCM_EnableAPB2PeriphClock(RCM_APB2_PERIPH_ADC1);
RCM_EnableAPB2PeriphClock(RCM_APB2_PERIPH_SYSCFG);
/** GPIO Configuration */
gpioConfig.pin = GPIO_PIN_0;
gpioConfig.mode = GPIO_MODE_AN;
gpioConfig.pupd = GPIO_PUPD_PU;
GPIO_Config(GPIOB, &gpioConfig);
/** ADC Configuration */
ADC_Reset();
ADC_ConfigStructInit(&adcConfig);
/** Set resolution*/
adcConfig.resolution = ADC_RESOLUTION_12B;
/** Set dataAlign*/
adcConfig.dataAlign = ADC_DATA_ALIGN_RIGHT;
/** Set scanDir*/
adcConfig.scanDir = ADC_SCAN_DIR_UPWARD;
/** Set convMode continous*/
adcConfig.convMode = ADC_CONVERSION_CONTINUOUS;
/** Set extTrigConv*/
adcConfig.extTrigConv = ADC_EXT_TRIG_CONV_TRG0;
/** Set TrigEdge*/
adcConfig.extTrigEdge = ADC_EXT_TRIG_EDGE_NONE;
ADC_Config(&adcConfig);
ADC_ConfigChannel(ADC_CHANNEL_8, ADC_SAMPLE_TIME_239_5 );
/** Calibration*/
ADC_ReadCalibrationFactor();
ADC_EnableDMA();
/** Enable ADC*/
ADC_Enable();
}
/*!
* @brief DMA Init
*
* @param None
*
* @retval None
*
* @note
*/
void APM_MINI_DMA_Init(uint32_t* Buf)
{
/** Enable DMA clock */
RCM_EnableAHBPeriphClock(RCM_AHB_PERIPH_DMA1);
/** DMA Configure */
DMA_Config_T dmaConfig;
/** size of buffer*/
dmaConfig.bufferSize = 1;
/** set memory Data Size*/
dmaConfig.memoryDataSize = DMA_MEMORY_DATASIZE_HALFWORD;
/** Set peripheral Data Size*/
dmaConfig.peripheralDataSize = DMA_PERIPHERAL_DATASIZE_HALFWORD;
/** Enable Memory Address increase*/
dmaConfig.memoryInc = DMA_MEMORY_INC_DISABLE;
/** Disable Peripheral Address increase*/
dmaConfig.peripheralInc = DMA_PERIPHERAL_INC_DISABLE;
/** Reset Circular Mode*/
dmaConfig.circular = DMA_CIRCULAR_ENABLE;
/** Disable M2M*/
dmaConfig.memoryTomemory = DMA_M2M_DISABLE;
/** set priority*/
dmaConfig.priority = DMA_PRIORITY_LEVEL_HIGHT;
/** read from peripheral*/
dmaConfig.direction = DMA_DIR_PERIPHERAL;
/** Set memory Address*/
dmaConfig.memoryAddress = (uint32_t)Buf;
/** Set Peripheral Address*/
dmaConfig.peripheralAddress = (uint32_t)&ADC->DATA;
DMA_Config(DMA1_CHANNEL_1,&dmaConfig);
/** Clear DMA TF flag*/
DMA_ClearIntFlag(DMA1_INT_FLAG_TF1);
/** Enable DMA Interrupt*/
DMA_EnableInterrupt(DMA1_CHANNEL_1,DMA_INT_TFIE);
NVIC_EnableIRQRequest(DMA1_CH1_IRQn,2);
DMA_Enable(DMA1_CHANNEL_1);
}
/*!
* @brief DMA_Interrupt
*
* @param None
*
* @retval None
*
* @NOTE This function need to put into DMA1_CH1_IRQHandler in apm32f0xx_int.c
*/
void DMA_Isr(void)
{
if(DMA_ReadStatusFlag(DMA1_FLAG_TF1))
{
/** do something*/
DMA_ClearStatusFlag(DMA1_FLAG_TF1);
}
}
/*!
* @brief Delay
*
* @param None
*
* @retval None
*
* @note
*/
void Delay(void)
{
volatile uint32_t delay = 0xFFFFF;
while(delay--);
}
/*!
* @brief Redirect C Library function printf to serial port.
* After Redirection, you can use printf function.
*
* @param ch: The characters that need to be send.
*
* @param *f: pointer to a FILE that can recording all information
* needed to control a stream
*
* @retval The characters that need to be send.
*
* @note
*/
int fputc(int ch, FILE *f)
{
/** send a byte of data to the serial port */
USART_TxData(DEBUG_USART,(uint8_t)ch);
/** wait for the data to be send */
while (USART_ReadStatusFlag(DEBUG_USART, USART_FLAG_TXBE) == RESET);
return (ch);
}
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