MoistureSoftware/Source/usart.c

/**************** (C) COPYRIGHT 2023 山东云唐智能科技有限公司 *******************
 * 文 件 名：
 * 创 建 者:  Kaiser
 * 描   述  :
 * 最后修改:
 *********************************** 修订记录 ************************************
 * 版   本:
 * 修订人:
 ********************************************************************************/

/******************************** 功能说明 *************************************
 *
 *******************************************************************************/

/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file    usart.c
 * @brief   This file provides code for the configuration
 *          of the USART instances.
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2022 STMicroelectronics.
 * All rights reserved.
 *
 * This software is licensed under terms that can be found in the LICENSE file
 * in the root directory of this software component.
 * If no LICENSE file comes with this software, it is provided AS-IS.
 *
 ******************************************************************************
 */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
/******************************** 功能说明 *************************************
 *	串口3端口配置
 *******************************************************************************/
void BIOS_USART3_Init(void)
{
    USART_TypeDef *USARTx = USART3;

    SET_BIT(RCC->APB1ENR, RCC_APB1ENR_USART3EN);

    // USART1 configured as follow:
    // 	- BaudRate = 9600 baud
    // 	- Word Length = 8 Bits
    // 	- One Stop Bit
    // 	- No parity
    // 	- Hardware flow control disabled (RTS and CTS signals)
    // 	- Receive disable and transmit enabled
    USARTx->BRR = SystemCoreClock / 9600u / 2u; /* 115200 bps						*/
    USARTx->CR1 = 0x0000u;                      /* 1 start bit, 8 data bits         */
    USARTx->CR2 = 0x0000u;                      /* 1 stop bit                       */
    USARTx->CR3 = 0x0000u;                      /* no flow control                  */
    SET_BIT(USARTx->CR1, USART_CR1_TE);         /* enable TX 						*/
    SET_BIT(USARTx->CR1, USART_CR1_RE);         /* enable TX 						*/
    SET_BIT(USARTx->CR1, USART_CR1_UE);         /* Enable USARTx					*/
    USART_ITConfig(USART3, /*USART_IT_TXE |*/ USART_IT_RXNE, ENABLE);

    /* Configure USART1 Rx (PA10) as input floating */
    /* Configure USART1 Tx (PA9) as alternate function push-pull */
    SET_BIT(RCC->APB2ENR, RCC_APB2ENR_IOPBEN);
    MODIFY_REG(GPIOB->CRH, 0x0000FF00u, 0x00004B00u);

    NVIC_EnableIRQ(USART3_IRQn);
}
/******************************** 功能说明 *************************************
 *	访问 USART3，实现RS232收发
 *******************************************************************************/
void UART3_Send(uint8_t OutByte)
{
    USART_TypeDef *USARTx = USART3;

    while (!(READ_BIT(USARTx->SR, USART_SR_TXE))) {
        ;
    }

    USARTx->DR = OutByte;
}
/******************************** 功能说明 *************************************
 *	访问 USART3，实现RS232收发
 *******************************************************************************/
uint8_t UART3_Received(void)
{
    USART_TypeDef *USARTx = USART3;

    while (!(READ_BIT(USARTx->SR, USART_SR_RXNE))) {
        ;
    }

    return USARTx->DR;
}
/******************************** 功能说明 *************************************
 *	串口2端口配置
 *******************************************************************************/
void BIOS_USART2_Init(uint32_t baudrate)
{
    USART_TypeDef *USARTx = USART2;

    SET_BIT(RCC->APB1ENR, RCC_APB1ENR_USART2EN);

    // USART1 configured as follow:
    // 	- BaudRate = 9600 baud
    // 	- Word Length = 8 Bits
    // 	- One Stop Bit
    // 	- No parity
    // 	- Hardware flow control disabled (RTS and CTS signals)
    // 	- Receive disable and transmit enabled
    USARTx->BRR = SystemCoreClock / baudrate / 2u; /* 115200 bps						*/
    USARTx->CR1 = 0x0000u;                         /* 1 start bit, 8 data bits         */
    USARTx->CR2 = 0x0000u;                         /* 1 stop bit                       */
    USARTx->CR3 = 0x0000u;                         /* no flow control                  */
    SET_BIT(USARTx->CR1, USART_CR1_TE);            /* enable TX 						*/
    SET_BIT(USARTx->CR1, USART_CR1_RE);            /* enable TX 						*/
    SET_BIT(USARTx->CR1, USART_CR1_UE);            /* Enable USARTx					*/

    /* Configure USART1 Rx (PA10) as input floating */
    /* Configure USART1 Tx (PA9) as alternate function push-pull */
    SET_BIT(RCC->APB2ENR, RCC_APB2ENR_IOPAEN);
    MODIFY_REG(GPIOA->CRL, 0x0000FF00u, 0x00004B00u);
}
/******************************** 功能说明 *************************************
 *	访问 USART2，实现TTL发
 *******************************************************************************/
void USART2_Send(uint8_t OutByte)
{
    USART_TypeDef *USARTx = USART2;

    while (!(READ_BIT(USARTx->SR, USART_SR_TXE))) {
        ;
    }

    USARTx->DR = OutByte;
}
extern void delay_us(uint32_t us);

void USART2Print(uint8_t *buffer, uint8_t lenth)
{
    uint8_t i;
    for (i = 0u; i < lenth; i++) {
        USART2_Send(*buffer++);

        while (!READ_BIT(USART2->SR, USART_SR_TC))
            delay_us(50u);
    }
}
/********  (C) COPYRIGHT 2023 山东云唐智能科技有限公司 **** End Of File ********/