145 lines
4.1 KiB
C
145 lines
4.1 KiB
C
#include "bsp_usart.h"
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UART_HandleTypeDef debug_usart;
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UART_HandleTypeDef wifi_usart;
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/**
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* @brief DEBUG_USART GPIO 配置,工作模式配置。115200 8-N-1
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* @param 无
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* @retval 无
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*/
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void debug_usart_init(void)
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{
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debug_usart.Instance = DEBUG_USART;
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debug_usart.Init.BaudRate = DEBUG_USART_BAUDRATE;
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debug_usart.Init.WordLength = UART_WORDLENGTH_8B;
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debug_usart.Init.StopBits = UART_STOPBITS_1;
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debug_usart.Init.Parity = UART_PARITY_NONE;
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debug_usart.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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debug_usart.Init.Mode = UART_MODE_TX_RX;
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HAL_UART_Init(&debug_usart);
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/*使能串口接收断 */
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__HAL_UART_ENABLE_IT(&debug_usart, UART_IT_RXNE);
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}
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void wifi_usart_init(void)
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{
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wifi_usart.Instance = WIFI_USART;
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wifi_usart.Init.BaudRate = WIFI_USART_BAUDRATE;
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wifi_usart.Init.WordLength = UART_WORDLENGTH_8B;
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wifi_usart.Init.StopBits = UART_STOPBITS_1;
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wifi_usart.Init.Parity = UART_PARITY_NONE;
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wifi_usart.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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wifi_usart.Init.Mode = UART_MODE_TX_RX;
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HAL_UART_Init(&wifi_usart);
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/*使能串口接收断 */
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__HAL_UART_ENABLE_IT(&wifi_usart, UART_IT_RXNE);
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}
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/**
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* @brief UART MSP 初始化
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* @param huart: UART handle
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* @retval 无
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*/
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void HAL_UART_MspInit(UART_HandleTypeDef *huart)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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if (huart->Instance == DEBUG_USART)
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{
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DEBUG_USART_CLK_ENABLE();
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DEBUG_USART_RX_GPIO_CLK_ENABLE();
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DEBUG_USART_TX_GPIO_CLK_ENABLE();
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/**USART1 GPIO Configuration
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PA9 ------> USART1_TX
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PA10 ------> USART1_RX
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*/
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/* 配置Tx引脚为复用功能 */
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GPIO_InitStruct.Pin = DEBUG_USART_TX_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(DEBUG_USART_TX_GPIO_PORT, &GPIO_InitStruct);
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/* 配置Rx引脚为复用功能 */
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GPIO_InitStruct.Pin = DEBUG_USART_RX_PIN;
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GPIO_InitStruct.Mode=GPIO_MODE_AF_INPUT; //模式要设置为复用输入模式！
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HAL_GPIO_Init(DEBUG_USART_RX_GPIO_PORT, &GPIO_InitStruct);
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//抢占优先级0，子优先级1
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HAL_NVIC_SetPriority(DEBUG_USART_IRQ ,6,0);
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//使能USART1中断通道
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HAL_NVIC_EnableIRQ(DEBUG_USART_IRQ );
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} else if (huart->Instance == WIFI_USART)
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{
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WIFI_USART_CLK_ENABLE();
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WIFI_USART_RX_GPIO_CLK_ENABLE();
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WIFI_USART_TX_GPIO_CLK_ENABLE();
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/**USART1 GPIO Configuration
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PA9 ------> USART1_TX
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PA10 ------> USART1_RX
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*/
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/* 配置Tx引脚为复用功能 */
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GPIO_InitStruct.Pin = WIFI_USART_TX_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(WIFI_USART_TX_GPIO_PORT, &GPIO_InitStruct);
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/* 配置Rx引脚为复用功能 */
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GPIO_InitStruct.Pin = WIFI_USART_RX_PIN;
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GPIO_InitStruct.Mode=GPIO_MODE_AF_INPUT; //模式要设置为复用输入模式！
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HAL_GPIO_Init(WIFI_USART_RX_GPIO_PORT, &GPIO_InitStruct);
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//抢占优先级0，子优先级1
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HAL_NVIC_SetPriority(WIFI_USART_IRQ ,2,0);
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//使能USART1中断通道
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HAL_NVIC_EnableIRQ(WIFI_USART_IRQ );
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}
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}
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/***************** 发送字符串 **********************/
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void usart_send_string(UART_HandleTypeDef *huart, uint8_t *str)
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{
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unsigned int k=0;
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do {
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HAL_UART_Transmit(huart,(uint8_t *)(str + k) ,1,1000);
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k++;
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} while(*(str + k)!='\0');
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}
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//重定向c库函数printf到串口DEBUG_USART，重定向后可使用printf函数
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int fputc(int ch, FILE *f)
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{
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/* 发送一个字节数据到串口DEBUG_USART */
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HAL_UART_Transmit(&debug_usart, (uint8_t *)&ch, 1, 1);
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return (ch);
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}
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//重定向c库函数scanf到串口DEBUG_USART，重写向后可使用scanf、getchar等函数
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int fgetc(FILE *f)
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{
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int ch;
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HAL_UART_Receive(&debug_usart, (uint8_t *)&ch, 1, 1);
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return (ch);
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}
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int send_buff(char *buf, int len)
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{
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usart_send_string(&debug_usart, (uint8_t *)buf);
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return len;
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}
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/*********************************************END OF FILE**********************/
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