Hi,
I want to program STM32F103 in which define an array that is completed with ADC value. I need to trigger the ADC with timer and also use DMA. It means that when the array complete, the DMA_IRQ Handler send this array by USART channel. I wrote this code but it doesn't work.
I would be appreciate if you help me to correct this program.
I want to program STM32F103 in which define an array that is completed with ADC value. I need to trigger the ADC with timer and also use DMA. It means that when the array complete, the DMA_IRQ Handler send this array by USART channel. I wrote this code but it doesn't work.
I would be appreciate if you help me to correct this program.
Code:
#include "stm32f10x.h"
#define ADC1_DR_Address ((uint32_t)0x4001244C)
uint16_t array [32];
DMA_InitTypeDef DMA_InitStructure;
int main(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_AFIO, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC , ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
NVIC_InitTypeDef sara3;
sara3.NVIC_IRQChannel = DMA1_Channel1_IRQn;
sara3.NVIC_IRQChannelPreemptionPriority = 0;
sara3.NVIC_IRQChannelSubPriority = 0;
sara3.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&sara3);
TIM_TimeBaseInitTypeDef Tim_TimeBaseStructure;
TIM_TimeBaseStructInit(&Tim_TimeBaseStructure);
Tim_TimeBaseStructure.TIM_Period = 9000;
Tim_TimeBaseStructure.TIM_Prescaler = 0x0;
Tim_TimeBaseStructure.TIM_ClockDivision = 0x0;
Tim_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &Tim_TimeBaseStructure);
TIM_SelectOutputTrigger(TIM2, TIM_TRGOSource_Update);
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
/*
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0x7F;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC1Init(TIM2, &TIM_OCInitStructure);
*/
ADC_InitTypeDef ADC_InitStructure;
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T2_CC2;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_55Cycles5);
//ADC_SoftwareStartConvCmd(ADC1,ENABLE);
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)array;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 32;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1, &USART_InitStructure);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
USART_ClearFlag(USART1,USART_FLAG_TC);
DMA_ITConfig (DMA1_Channel1, DMA_IT_TC,ENABLE);
DMA_Cmd(DMA1_Channel1, ENABLE);
ADC_Cmd(ADC1, ENABLE);
ADC_DMACmd(ADC1, ENABLE);
USART_Cmd(USART1, ENABLE);
TIM_Cmd(TIM2, ENABLE);
ADC_ResetCalibration(ADC1);
while(ADC_GetResetCalibrationStatus(ADC1));
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1));
while (1);
}
void DMA1_Channel1_IRQHandler(void)
{
uint8_t i = 0;
if( DMA_GetITStatus(DMA1_FLAG_TC1) )
{
for(i = 0;i < 32 ; i++){
USART_SendData(USART1, (uint8_t) array[i]);
while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET) {}
USART_SendData(USART1, (uint8_t) array[i]>> 8);
while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET) {}
}
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)array;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 32;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
ADC_DMACmd(ADC1, ENABLE);
DMA_Cmd(DMA1_Channel1, ENABLE);
DMA_ClearITPendingBit(DMA1_IT_TC1);
DMA_ClearITPendingBit(DMA1_IT_GL1);
}
}
