B3M38SPD seminar project - beehive monitor with LoRa reporting
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spd-lorabees/Src/vcom.c

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7 years ago
/******************************************************************************
* @file vcom.c
* @author MCD Application Team
* @version V1.1.2
* @date 08-September-2017
* @brief manages virtual com port
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2017 STMicroelectronics International N.V.
* All rights reserved.</center></h2>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted, provided that the following conditions are met:
*
* 1. Redistribution of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of other
* contributors to this software may be used to endorse or promote products
* derived from this software without specific written permission.
* 4. This software, including modifications and/or derivative works of this
* software, must execute solely and exclusively on microcontroller or
* microprocessor devices manufactured by or for STMicroelectronics.
* 5. Redistribution and use of this software other than as permitted under
* this license is void and will automatically terminate your rights under
* this license.
*
* THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
* RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
* SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#include "hw.h"
#include "vcom.h"
#include <stdarg.h>
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define BUFSIZE 256
#define USARTX_IRQn USART2_IRQn
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* buffer */
static char buff[BUFSIZE];
/* buffer write index*/
__IO uint16_t iw=0;
/* buffer read index*/
static uint16_t ir=0;
/* Uart Handle */
static UART_HandleTypeDef UartHandle;
/* Private function prototypes -----------------------------------------------*/
/* Functions Definition ------------------------------------------------------*/
void vcom_Init(void)
{
/*## Configure the UART peripheral ######################################*/
/* Put the USART peripheral in the Asynchronous mode (UART Mode) */
/* UART1 configured as follow:
- Word Length = 8 Bits
- Stop Bit = One Stop bit
- Parity = ODD parity
- BaudRate = 921600 baud
- Hardware flow control disabled (RTS and CTS signals) */
UartHandle.Instance = USARTX;
UartHandle.Init.BaudRate = 115200;
UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
UartHandle.Init.StopBits = UART_STOPBITS_1;
UartHandle.Init.Parity = UART_PARITY_NONE;
UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
UartHandle.Init.Mode = UART_MODE_TX_RX;
if(HAL_UART_Init(&UartHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
HAL_NVIC_SetPriority(USARTX_IRQn, 0x1, 0);
HAL_NVIC_EnableIRQ(USARTX_IRQn);
}
void vcom_DeInit(void)
{
#if 1
HAL_UART_DeInit(&UartHandle);
#endif
}
void vcom_Send( char *format, ... )
{
va_list args;
va_start(args, format);
uint8_t len;
uint8_t lenTop;
char tempBuff[128];
BACKUP_PRIMASK();
DISABLE_IRQ();
/*convert into string at buff[0] of length iw*/
len = vsprintf(&tempBuff[0], format, args);
if (iw+len<BUFSIZE)
{
memcpy( &buff[iw], &tempBuff[0], len);
iw+=len;
}
else
{
lenTop=BUFSIZE-iw;
memcpy( &buff[iw], &tempBuff[0], lenTop);
len-=lenTop;
memcpy( &buff[0], &tempBuff[lenTop], len);
iw = len;
}
RESTORE_PRIMASK();
HAL_NVIC_SetPendingIRQ(USARTX_IRQn);
va_end(args);
}
/* modifes only ir*/
void vcom_Print( void)
{
char* CurChar;
while( ( (iw+BUFSIZE-ir)%BUFSIZE) >0 )
{
BACKUP_PRIMASK();
DISABLE_IRQ();
CurChar = &buff[ir];
ir= (ir+1) %BUFSIZE;
RESTORE_PRIMASK();
HAL_UART_Transmit(&UartHandle,(uint8_t *) CurChar, 1, 300);
}
HAL_NVIC_ClearPendingIRQ(USARTX_IRQn);
}
void vcom_Send_Lp( char *format, ... )
{
va_list args;
va_start(args, format);
uint8_t len;
uint8_t lenTop;
char tempBuff[128];
BACKUP_PRIMASK();
DISABLE_IRQ();
/*convert into string at buff[0] of length iw*/
len = vsprintf(&tempBuff[0], format, args);
if (iw+len<BUFSIZE)
{
memcpy( &buff[iw], &tempBuff[0], len);
iw+=len;
}
else
{
lenTop=BUFSIZE-iw;
memcpy( &buff[iw], &tempBuff[0], lenTop);
len-=lenTop;
memcpy( &buff[0], &tempBuff[lenTop], len);
iw = len;
}
RESTORE_PRIMASK();
va_end(args);
}
/**
* @brief UART MSP Initialization
* This function configures the hardware resources used in this example:
* - Peripheral's clock enable
* - Peripheral's GPIO Configuration
* - NVIC configuration for UART interrupt request enable
* @param huart: UART handle pointer
* @retval None
*/
void HAL_UART_MspInit(UART_HandleTypeDef *huart)
{
/*##-1- Enable peripherals and GPIO Clocks #################################*/
/* Enable USART1 clock */
USARTX_CLK_ENABLE();
/*##-2- Configure peripheral GPIO ##########################################*/
vcom_IoInit( );
}
void vcom_IoInit(void)
{
GPIO_InitTypeDef GPIO_InitStruct={0};
/* Enable GPIO TX/RX clock */
USARTX_TX_GPIO_CLK_ENABLE();
USARTX_RX_GPIO_CLK_ENABLE();
/* UART TX GPIO pin configuration */
GPIO_InitStruct.Pin = USARTX_TX_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = USARTX_TX_AF;
HAL_GPIO_Init(USARTX_TX_GPIO_PORT, &GPIO_InitStruct);
/* UART RX GPIO pin configuration */
GPIO_InitStruct.Pin = USARTX_RX_PIN;
GPIO_InitStruct.Alternate = USARTX_RX_AF;
HAL_GPIO_Init(USARTX_RX_GPIO_PORT, &GPIO_InitStruct);
}
void vcom_IoDeInit(void)
{
GPIO_InitTypeDef GPIO_InitStructure={0};
USARTX_TX_GPIO_CLK_ENABLE();
USARTX_RX_GPIO_CLK_ENABLE();
GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Pin = USARTX_TX_PIN ;
HAL_GPIO_Init( USARTX_TX_GPIO_PORT, &GPIO_InitStructure );
GPIO_InitStructure.Pin = USARTX_RX_PIN ;
HAL_GPIO_Init( USARTX_RX_GPIO_PORT, &GPIO_InitStructure );
}
/**
* @brief UART MSP DeInit
* @param huart: uart handle
* @retval None
*/
void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
{
vcom_IoDeInit( );
}
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/