//-------------------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------------------- //************************************************************************************************** // Секция include: здесь подключаются заголовочные файлы используемых модулей //************************************************************************************************** #include "aplication.h" //-------------------------------------------------------------------------------------------------- //************************************************************************************************** // Секция определения макросов //************************************************************************************************** //************************************************************************************************** // Секция определения глобальных переменных //************************************************************************************************** uint8_t Receive_pack[60]; //Массив приема пакета 50 байт //************************************************************************************************** // Функции библиотеки //************************************************************************************************** //#define RS485_USART USART2 volatile uint8_t Receive=0; //================================================================================================== int main(){ Init_Pin_DebugLed(); //-------------------------------------------------------------------------------------------------- //----------------------USART INIT------------------------------------------------------------------ //-------------------------------------------------------------------------------------------------- RCC->APB1ENR |=RCC_APB1Periph_USART2; //--------------------------------------------------------------------------------------------- RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); RCC->APB2ENR |=RCC_APB2Periph_GPIOA; //--------------------------------------------------------------------------------------------- //--------------------------------------------------------------------------------------------- GPIO_INIT_PIN(GPIOA,3,GPIO_MODE_INPUT_FLOATING); GPIO_INIT_PIN(GPIOA,2,GPIO_MODE_OUTPUT50_ALT_PUSH_PULL); //--------------------------------------------------------------------------------------------- USART2->CR1 = 0; USART2->BRR =(CPU_APB1+19200/2)/19200; USART2->CR1 = USART_CR1_TE | USART_CR1_RE; //--------------------------------------------------------------------------------------------- //----------RS485 INIT------------------------------------------------------------------------- //--------------------------------------------------------------------------------------------- RCC->APB2ENR |=RCC_APB2Periph_GPIOA; GPIO_INIT_PIN(GPIOA,11,GPIO_MODE_OUTPUT50_PUSH_PULL); //------------------------------------- RS485_OUT //настраиваем на выход //--------------------------------------------------------------------------------------------- //----------DMA INIT--------------------------------------------------------------------------- //--------------------------------------------------------------------------------------------- RCC->AHBENR |= RCC_AHBENR_DMA1EN; //-------------------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------------------- DMA1_Channel6->CPAR = (uint32_t)(&USART2->DR); NVIC_EnableIRQ(DMA1_Channel6_IRQn); //--------------------------------------------------------------------------------------------- USART2->CR1 |= USART_CR1_UE; // USart Enable //--------------------------------------------------------------------------------------------- //--------------------------------------------------------------------------------------------- //--------------------------------------------------------------------------------------------- while(1){ USART2->CR1 &=~USART_CR1_UE; USART2->CR1 |= USART_CR1_UE; // USart Enable //------------------------------------------------------------- RS485_OUT //Переключил на выход while(!(USART2->SR&USART_SR_TXE)){} USART2->DR=0x11; while(!(USART2->SR&USART_SR_TC)){} //------------------------------------------------------------- RS485_IN //настраиваем на выход Debug2_1 Debug2_0 //-------------------------------------------------------------- DMA1_Channel6->CCR=0; //--------------------------------------------------------------------------------------- //------------Прием---------------------------------------------------------------------- //--------------------------------------------------------------------------------------- USART2->SR=0; USART2->CR3=USART_CR3_DMAR; (void)USART2->DR; (void)USART2->DR; DMA1_Channel6->CNDTR=sizeof(Resp_pack_t); //Принимать по максимум, сколько есть DMA1_Channel6->CMAR = (uint32_t)&Receive_pack[0]; DMA1_Channel6->CCR=DMA_CCR1_TCIE|DMA_CCR6_MINC|DMA_CCR1_EN; DMA1->IFCR=DMA_IFCR_CGIF6; //--------------------------------------------------------------------------------------- while(Receive==0){} Receive=0; //while(!(DMA1->ISR & DMA_ISR_TCIF6)){} //while(!(RS485_USART->SR&USART_SR_RXNE)){} Debug2_1 Debug2_0 //--------------------------------------------------------------------------------------- if(Receive_pack[0]==0x11){ if(Receive_pack[49]==0x13){ //пакет принят правильно NOP; //----------------------------------------------------------------------- } }else{ NOP; } } } //================================================================================================== /* * @Описание: Описание функции. * @Параметр: * @Возврат: Нету */ void DMA1_Channel6_IRQHandler(void) { DMA1->IFCR = DMA_IFCR_CGIF6; Receive=1; //DMA1_Channel6->CCR =DMA_CCR6_MINC; USART2->CR3=0; }