Easyelectronics.ru

#include "stm32f4xx_rcc.h"
#include "stm32f4xx_dma.h"
#include "misc.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_tim.h"

char Buffer[640];

int main(void)
{
   NVIC_InitTypeDef NVIC_InitStructure;
   DMA_InitTypeDef DMA_InitStructure;
   TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
   TIM_OCInitTypeDef         TIM_OCInitStructure;
   GPIO_InitTypeDef GPIO_InitStructure;

   NVIC_InitStructure.NVIC_IRQChannel = DMA1_Stream6_IRQn;
   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
   NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
   NVIC_Init(&NVIC_InitStructure);

   RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE);
   RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
   RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
   GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_All;
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
   GPIO_Init(GPIOD, &GPIO_InitStructure);

   TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
   TIM_TimeBaseStructure.TIM_Period = 1000;
   TIM_TimeBaseStructure.TIM_Prescaler = 160;
   TIM_TimeBaseStructure.TIM_ClockDivision = 0;
   TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
   TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

   TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Disable;
   TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
   TIM_OCInitStructure.TIM_Pulse = 500;
   TIM_OC1Init(TIM2, &TIM_OCInitStructure);

   TIM_DMACmd(TIM2, TIM_DMA_CC2, ENABLE);

   DMA_Cmd(DMA1_Stream6, DISABLE);
   DMA_DeInit(DMA1_Stream6);
   DMA_StructInit(&DMA_InitStructure);
   DMA_InitStructure.DMA_PeripheralBaseAddr = (unsigned int)&(GPIOD->ODR);
   DMA_InitStructure.DMA_Memory0BaseAddr = (unsigned int)&Buffer;
   DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
   DMA_InitStructure.DMA_BufferSize = 640;
   DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
   DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
   DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
   DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
   DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
   DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
   DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
   DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
   DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
   DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
   DMA_InitStructure.DMA_Channel = DMA_Channel_3;

   DMA_Init(DMA1_Stream6, &DMA_InitStructure);
   DMA_ITConfig(DMA1_Stream6, DMA_IT_TC | DMA_IT_TE, ENABLE);
   DMA_Cmd(DMA1_Stream6, ENABLE);

   TIM_Cmd(TIM2, ENABLE);

   GPIO_SetBits(GPIOD, GPIO_Pin_All);
   GPIO_ResetBits(GPIOD, GPIO_Pin_12 | GPIO_Pin_14);

    while(1)
    {
       GPIO_ResetBits(GPIOD, GPIO_Pin_12 | GPIO_Pin_14);
    }
}

void DMA1_Stream6_IRQHandler(void) {
   TIM2->CR1 &= ~TIM_CR1_CEN;
   if (DMA1->HISR & DMA_HISR_TEIF6)
      GPIO_SetBits(GPIOD, GPIO_Pin_14);
   if (DMA1->HISR & DMA_HISR_TCIF6) {
      GPIO_SetBits(GPIOD, GPIO_Pin_12);
      DMA1_Stream6->M0AR = (unsigned int)&Buffer;
      DMA1_Stream6->CR |= DMA_SxCR_EN;
   }
   DMA_ClearITPendingBit(DMA1_Stream6, DMA_IT_TC | DMA_IT_TE);
   TIM2->CR1 |= TIM_CR1_CEN;
}

#include "stm32f4xx_rcc.h"
#include "stm32f4xx_dma.h"
#include "misc.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_tim.h"

char Buffer[640];

int main(void)
{
   NVIC_InitTypeDef NVIC_InitStructure;
   DMA_InitTypeDef DMA_InitStructure;
   TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
   TIM_OCInitTypeDef         TIM_OCInitStructure;
   GPIO_InitTypeDef GPIO_InitStructure;

   NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream2_IRQn;
   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
   NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
   NVIC_Init(&NVIC_InitStructure);

   RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
   RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
   RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);

   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
   GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_All;
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
   GPIO_Init(GPIOD, &GPIO_InitStructure);

   TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
   TIM_TimeBaseStructure.TIM_Period = 1000;
   TIM_TimeBaseStructure.TIM_Prescaler = 1600;
   TIM_TimeBaseStructure.TIM_ClockDivision = 0;
   TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
   TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

   TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Disable;
   TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
   TIM_OCInitStructure.TIM_Pulse = 500;
   TIM_OC1Init(TIM1, &TIM_OCInitStructure);

   TIM_DMACmd(TIM1, TIM_DMA_CC2, ENABLE);

   DMA_Cmd(DMA2_Stream2, DISABLE);
   DMA1->LIFCR |= DMA_LIFCR_CDMEIF2 | DMA_LIFCR_CFEIF2 |
         DMA_LIFCR_CHTIF2 | DMA_LIFCR_CTCIF2 | DMA_LIFCR_CTEIF2;
   DMA_DeInit(DMA2_Stream2);
   DMA_StructInit(&DMA_InitStructure);
   DMA_InitStructure.DMA_PeripheralBaseAddr = (unsigned int)&(GPIOD->ODR);
   DMA_InitStructure.DMA_Memory0BaseAddr = (unsigned int)&Buffer;
   DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
   DMA_InitStructure.DMA_BufferSize = 640;
   DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
   DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
   DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
   DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
   DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
   DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
   DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
   DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
   DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
   DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
   DMA_InitStructure.DMA_Channel = DMA_Channel_6;

   DMA_Init(DMA2_Stream2, &DMA_InitStructure);
   DMA_ITConfig(DMA2_Stream2, DMA_IT_TC | DMA_IT_TE, ENABLE);
   DMA_Cmd(DMA2_Stream2, ENABLE);

   TIM_Cmd(TIM1, ENABLE);

   GPIO_SetBits(GPIOD, GPIO_Pin_All);
   GPIO_ResetBits(GPIOD, GPIO_Pin_12 | GPIO_Pin_14);

    while(1)
    {
       GPIO_ResetBits(GPIOD, GPIO_Pin_12 | GPIO_Pin_14);
    }
}

void DMA2_Stream2_IRQHandler(void) {
   TIM1->CR1 &= ~TIM_CR1_CEN;
   if (DMA2->LISR & DMA_LISR_TEIF2)
      GPIO_SetBits(GPIOD, GPIO_Pin_14);
   if (DMA2->LISR & DMA_LISR_TCIF2) {
      GPIO_SetBits(GPIOD, GPIO_Pin_12);
      DMA2_Stream2->M0AR = (unsigned int)&Buffer;
      DMA2_Stream2->CR |= DMA_SxCR_EN;
   }
   DMA_ClearITPendingBit(DMA2_Stream2, DMA_IT_TC | DMA_IT_TE);
   TIM1->CR1 |= TIM_CR1_CEN;
}

void assert_param(unsigned int error) {
   ;
}