221 lines
5.7 KiB
C
221 lines
5.7 KiB
C
/**
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******************************************************************************
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* @file cmd_uart.c
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* @author Lucien Senaneuch
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* @version V1.0
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* @date 16-mai-2016
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* @brief Gestion de l'uart
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* @note Ce fichier contient les fonctions li<6C> <20> la gestion de la communications avec l'USART :
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* - Fonction definissant les E/S li<6C> <20> l'uart.
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* - Initialisation de la dma pour l'envoi
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* - Initialisation de fa<66>on non bloquante de la reception en polling
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* - Gestions des commandes
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******************************************************************************
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******************************************************************************
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*/
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#include "system_dumby.h"
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#include <stm32f10x.h>
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#include <string.h>
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#include <usart.h>
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#include "cmdManager.h"
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//#include "Battery.h"
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//#include "motor.h"
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//#include <math.h>
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//#include "MAE.h"
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//#include <stdlib.h>
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//#include "gestionCmde.h"
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#define TBuffer 30
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/**
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* @brief Variable global emission
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*/
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char sendString[TBuffer];
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/**
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* @brief Variable global reception
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*/
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char receiptString[TBuffer];
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/**
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* @brief Variable global nombre de caractère reçu.
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*/
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uint16_t cpt_Rx =0;
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uint16_t i;
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// test de k
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uint16_t test;
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// volatile temporary variable
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volatile uint16_t tmp;
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/** @addtogroup Projects
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* @{
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*/
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/** @addtogroup UART
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* @{
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*/
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/** @addtogroup Init_GPIO_IT_DMA_UART
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* @{
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*/
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/**
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* @brief Initialise l'UART avec les paramètres suivants : 9600 bauds / 1bits de stop / pas de partité ou de controle
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*
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* @param Aucun
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* @retval Aucun
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*/
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void usartConfigure(void)
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{
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USART_InitTypeDef USART_InitStructure;
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GPIO_InitTypeDef Init_Structure;
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NVIC_InitTypeDef NVIC_InitStructure;
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// Configure les lignes d'E/S
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// Configure Output ALTERNATE FONCTION PPULL PORT B6 Tx
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Init_Structure.GPIO_Pin = GPIO_Pin_6;
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Init_Structure.GPIO_Mode = GPIO_Mode_AF_PP;
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Init_Structure.GPIO_Speed=GPIO_Speed_50MHz;
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GPIO_Init(GPIOB, &Init_Structure);
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// Configure B7 Rx
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Init_Structure.GPIO_Pin = GPIO_Pin_7;
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Init_Structure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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GPIO_Init(GPIOB, &Init_Structure);
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// Configure l'USART
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USART_InitStructure.USART_BaudRate = 9600;
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USART_InitStructure.USART_WordLength = USART_WordLength_8b;
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USART_InitStructure.USART_StopBits = USART_StopBits_1;
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USART_InitStructure.USART_Parity = USART_Parity_No;
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USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
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USART_Init(USART1, &USART_InitStructure);
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USART_DMACmd(USART1, USART_DMAReq_Tx, ENABLE);
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USART_Cmd(USART1, ENABLE);
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GPIO_PinRemapConfig(GPIO_Remap_USART1,ENABLE);
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USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
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// configure les interruptions de l'USART
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NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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/**
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* @brief Initialise la DMA de l'usart avec le buffer d'envoi sendString.
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*
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* @param Aucun
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* @retval Aucun
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*/
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void usartInitDMA(uint16_t bufferSize)
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{
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DMA_InitTypeDef DMA_InitStructure;
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DMA_DeInit(DMA1_Channel4);
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DMA_InitStructure.DMA_PeripheralBaseAddr = 0x40013804;
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DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)sendString;
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DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
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DMA_InitStructure.DMA_BufferSize = bufferSize;
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DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
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DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
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DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
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DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
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DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
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DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
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DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
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DMA_Init(DMA1_Channel4, &DMA_InitStructure);
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}
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/**
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* @}
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*/
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/** @addtogroup Function Send - Receive
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* @{
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*/
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/**
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* @brief Handler sur reception de l'uart.
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*
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* Reçoit les commandes UART sur Rx. Met à jour le buffer de reception
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* receiptString. Et appelle la fonction qui traitera la commande.
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* Commande finis sur un '\r'
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*
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* @attention Variable Global cpt_Rx
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* taille reçu < 16.
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*
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* @param Aucun
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* @retval Aucun
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*/
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void USART1_IRQHandler(void)
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{
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if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) {
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receiptString[cpt_Rx] = USART_ReceiveData(USART1);
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if (cpt_Rx < 16)
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cpt_Rx++;
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if (receiptString[cpt_Rx - 1] == '\r') {
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cmdManage();
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if (Dumber.AddOn == FALSE) {
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cmdAddChecksum();
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usartSendData(); // Fonction bloquante
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}
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for (i = 0; i < cpt_Rx + 1; i++)
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receiptString[i] = 0;
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cpt_Rx = 0;
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}
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}
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// Code pour éviter les caractères fantômes
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tmp = USART1->SR;
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tmp = USART1->CR1;
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tmp = USART1->CR2;
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tmp = USART1->CR3;
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tmp = USART1->BRR;
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tmp = USART1->GTPR;
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tmp = USART1->SR;
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USART_ClearFlag(USART1, USART_FLAG_RXNE);
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}
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/**
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* @brief Chargement du buffer Tx dans la DMA et envoi via l'UART
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*
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* @param Aucun
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* @retval Aucun
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*/
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void usartSendData(void){
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int taille;
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for(taille = 0; sendString[taille]!= '\r'; taille++);
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usartInitDMA(taille+1);
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DMA_Cmd(DMA1_Channel4, ENABLE);
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while (DMA_GetFlagStatus(DMA1_FLAG_TC4) == RESET);
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for(i=0; i<TBuffer;i++)
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sendString[i]=0;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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