155 lines
5.0 KiB
C
155 lines
5.0 KiB
C
#include "BSP.H"
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/******************************** 功能说明 *************************************
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* 串口配置
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*******************************************************************************/
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/******************************** 功能说明 *************************************
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* 串口1端口配置
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*******************************************************************************/
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osMutexId( USART_Mutex_ID );
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void BIOS_USART1_Init(void)
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{
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USART_TypeDef *USARTx = USART1;
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SET_BIT(RCC->APB2ENR, RCC_APB2ENR_USART1EN);
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// USART1 configured as follow:
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// - BaudRate = 9600 baud
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// - Word Length = 8 Bits
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// - One Stop Bit
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// - No parity
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// - Hardware flow control disabled (RTS and CTS signals)
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// - Receive disable and transmit enabled
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USARTx->BRR = SystemCoreClock / 115200; /* 115200 bps */
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USARTx->CR1 = 0x0000u; /* 1 start bit, 8 data bits */
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USARTx->CR2 = 0x0000u; /* 1 stop bit */
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USARTx->CR3 = 0x0000u; /* no flow control */
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SET_BIT(USARTx->CR1, USART_CR1_TE); /* enable TX */
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SET_BIT(USARTx->CR1, USART_CR1_RE); /* enable TX */
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SET_BIT(USARTx->CR1, USART_CR1_UE); /* Enable USARTx */
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USART_ITConfig(USART1, /*USART_IT_TXE |*/ USART_IT_RXNE, ENABLE);
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/* Configure USART1 Rx (PA10) as input floating */
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/* Configure USART1 Tx (PA9) as alternate function push-pull */
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SET_BIT(RCC->APB2ENR, RCC_APB2ENR_IOPAEN);
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MODIFY_REG(GPIOA->CRH, 0x00000FF0u, 0x000004B0u);
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NVIC_EnableIRQ(USART1_IRQn);
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osMutexDef( USART_Mutex );
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USART_Mutex_ID = osMutexCreate( osMutex( USART_Mutex ) );
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}
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/******************************** 功能说明 *************************************
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* 访问 USART3，实现RS232收发
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*******************************************************************************/
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void UART1_Send(uint8_t OutByte)
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{
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USART_TypeDef *USARTx = USART1;
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while (!(READ_BIT(USARTx->SR, USART_SR_TXE))) {
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delay_us(100);
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}
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USARTx->DR = OutByte;
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}
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/******************************** 功能说明 *************************************
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* 访问 USART3，实现RS232收发
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*******************************************************************************/
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uint8_t UART1_Received(void)
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{
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USART_TypeDef *USARTx = USART1;
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while (!(READ_BIT(USARTx->SR, USART_SR_RXNE))) {
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;
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}
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return USARTx->DR;
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}
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uint8_t DataInbuf[100u];
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static volatile uint16_t UsartDelayTime = 0u;
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static _Bool RxFlag = false;
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static uint8_t Datai = 0u;
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_Bool RxUpToDate = false;
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/******************************** 功能说明 *************************************
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*
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*******************************************************************************/
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void DataPrint(uint8_t *buffer, uint8_t lenth)
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{
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uint8_t i;
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osMutexWait(USART_Mutex_ID,500000);
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// CLEAR_BIT(USART1->CR1, USART_CR1_RXNEIE);
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for (i = 0u; i < lenth; i++) {
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UART1_Send(*buffer++);
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while (!READ_BIT(USART1->SR, USART_SR_TC))
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delay_us(50u);
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}
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// SET_BIT(USART1->CR1, USART_CR1_RXNEIE);
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osMutexRelease(USART_Mutex_ID);
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}
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void DataRec(uint8_t *buffer)
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{
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*buffer = UART1_Received();
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}
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void USART1_IRQHandler(void)
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{
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if (READ_BIT(USART1->SR, USART_SR_ORE) != RESET) {
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DataInbuf[0] = (unsigned char)(USART1->SR);
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DataInbuf[1] = (unsigned char)(USART1->DR);
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}
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if (READ_BIT(USART1->SR, USART_SR_RXNE)) {
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if (!RxFlag) {
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Datai = 0u;
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RxFlag = true;
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TIM2->CNT = 0u;
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UsartDelayTime = 0u;
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SET_BIT(TIM2->DIER, TIM_DIER_UIE); //
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SET_BIT(TIM2->CR1, TIM_CR1_CEN);
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}
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TIM2->CNT = 0u;
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UsartDelayTime = 0u;
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DataRec(DataInbuf + Datai++);
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}
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}
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void BIOS_TIM2_TIMER_Init(void)
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{
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SET_BIT(RCC->APB1ENR, RCC_APB1ENR_TIM2EN); //
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SET_BIT(TIM2->EGR, TIM_EGR_UG); //
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TIM2->CR1 = TIM_CR1_ARPE; //
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TIM2->PSC = (uint32_t)(SystemCoreClock / 100000u - 1u); //
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TIM2->ARR = 100u; //
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CLEAR_BIT(TIM2->DIER, TIM_DIER_UIE); //
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CLEAR_BIT(TIM2->CR1, TIM_CR1_CEN);
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TIM2->CNT = 0u;
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NVIC_EnableIRQ(TIM2_IRQn);
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}
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osSemaphoreId semDataBack;
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osSemaphoreDef(semDataBack);
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void TIM2_IRQHandler(void)
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{
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CLEAR_BIT(TIM2->SR, TIM_SR_UIF);
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if (RxFlag) {
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if (UsartDelayTime++ > 10u) // 1*10ms
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{
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CLEAR_BIT(TIM2->DIER, TIM_DIER_UIE); //
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CLEAR_BIT(TIM2->CR1, TIM_CR1_CEN);
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TIM2->CNT = 0u;
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UsartDelayTime = 0u;
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RxFlag = false;
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if ((DataInbuf[0] == 0xA5) && (DataInbuf[Datai - 1] == 0xAA)) //
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{
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DataInbuf[Datai] = '\0';
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osSemaphoreRelease(semDataBack);
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}
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}
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}
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}
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void USARTHMIInit()
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{
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semDataBack = osSemaphoreCreate(osSemaphore(semDataBack), 0);
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BIOS_TIM2_TIMER_Init();
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BIOS_USART1_Init();
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}
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