/********************************* (C) РОТЕК ***********************************
 * @module  buttons_api
 * @file    buttons_api.c
 * @version 1.0.0
 * @date    XX.XX.XXXX
 * $brief   buttons_api
 *******************************************************************************
 * @history     Version  Author         Comment
 * XX.XX.XXXX   1.0.0    Telenkov D.A.  First release.
 *******************************************************************************
 */

#include "stm32f4xx.h"  
#include "ports.h"

#include "FreeRTOS.h"
#include "task.h"

char        recvBufRS232[RS232_MAX_REC_LEN];     // Входной буфер для RS232
uint16_t    indexRS232;

/**
  * @brief  
  */
void RS232_Init(void)
{
    GPIO_InitTypeDef  GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;
    NVIC_InitTypeDef  NVIC_InitStructure;
    
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
  
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(GPIOD, &GPIO_InitStructure);
  
    GPIO_PinAFConfig(GPIOD, GPIO_PinSource8, GPIO_AF_USART3);
    GPIO_PinAFConfig(GPIOD, GPIO_PinSource9, GPIO_AF_USART3);  
  
    NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
  
    NVIC_SetPriority (USART3_IRQn, 5); 
  
    USART_InitStructure.USART_BaudRate = 115200;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
    USART_Init(RS232_PORT, &USART_InitStructure);

    USART_Cmd(RS232_PORT, ENABLE);      
      
    USART_ITConfig(RS232_PORT, USART_IT_RXNE, ENABLE);
    USART_ITConfig(RS232_PORT, USART_IT_TXE, DISABLE);
}

/**
  * @brief  RS232
  */
/*void USART3_IRQHandler(void)
{
    char byte;
    
    if(USART_GetITStatus(RS232_PORT, USART_IT_RXNE) != RESET)
    {
        byte = (uint8_t)(RS232_PORT->DR & (uint16_t)0x01FF);
        
        recvBufRS232[indexRS232++] = byte;
    
        // Защита от выхода за границу отведенного буфера
        if (indexRS232 == (RS232_MAX_REC_LEN - 1))
            indexRS232 = 0;
    }
}*/

void RS232_SendByte(char byte)
{
    while(USART_GetFlagStatus(RS232_PORT, USART_FLAG_TXE) == RESET) {}
    RS232_PORT->DR = (byte & (uint16_t)0x01FF);
}


/********************************* (C) РОТЕК **********************************/