demande de correction de code de la communication série entre deux cartes stm32

[hichooo1991]

salutation
jai travailler avec code ppour lenvoie dun seule caractere entre 2 cartes stm32f4 et je veux l'amiliorer pour quil puisse envoyer une chaine complaite de caractere jai fait des modifications mais ça n'a pas marché j'espere bien que vous m'aider a le corriger et merci bien d'avance
voici le code

#include "stm32f4xx.h"
#include "stm32f4xx_rcc.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_sdio.h"
#include "stm32f4xx_usart.h" // 4
//#include "LCD2x16.c"
//#include "dd.h"

char *OutString; // string must be terminated by '\0' // 8
char  *car_recu[];
int j ;
void USART3init(int BaudRate) {
GPIO_InitTypeDef GPIO_InitStructure; // 2
USART_InitTypeDef USART_InitStructure; // 3
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE); // 5
 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9; // 6
 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; // 7
 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; // 8
 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; // 9
 GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; // 10
 GPIO_Init(GPIOD, &GPIO_InitStructure); // 11
 GPIO_PinAFConfig(GPIOD, GPIO_PinSource8, GPIO_AF_USART3); // 12
 GPIO_PinAFConfig(GPIOD, GPIO_PinSource9, GPIO_AF_USART3); // 13

 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); // 15
 USART_InitStructure.USART_BaudRate = 9600; // 16
 USART_InitStructure.USART_WordLength = USART_WordLength_8b; // 17
 USART_InitStructure.USART_StopBits = USART_StopBits_1; // 18
 USART_InitStructure.USART_Parity = USART_Parity_No; // 19
 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; // 20
 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; // 21
 USART_Init(USART3, &USART_InitStructure); // 22

 USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); // enable IRQ on RX // 24
 NVIC_EnableIRQ(USART3_IRQn); // Enable IRQ for USART3 in NVIC // 25
USART_Cmd(USART3, ENABLE); // 27
}

void USART3_IRQHandler(void) {
 // RX IRQ part

 if (USART3->SR & USART_SR_RXNE) { // if RXNE flag in SR is on then // 4
 *car_recu[j]= *USART3->DR[j]; // save received character & clear flag // 5
 //LCD_uInt16(RXch, 0x05, 1); // show ASCII on LCD // 6
 //if (RXch == 'a') LED_BL_ON; // 7
 //if (RXch == 'b') LED_BL_OFF; // 8
 //if (RXch >= 'A' && RXch <= 'Z') USART3->DR = ++RXch; // echo this character // 9
 //if (RXch == 'c') { // if 'c' => return string // 10
 //OutString = "ABCDEFGH"; // Init string & ptr // 11
 //USART_ITConfig(USART3, USART_IT_TXE, ENABLE); // 12
 //USART3->DR = *OutString++; // Send first character // 13
 }; 
 };
 // TX IRQ part
 //if (USART3->SR & USART_SR_TXE) { // If TXE flag in SR is on then // 18
 //if (*OutString != '\0') // if not end of string // 19
 //USART3->DR = *OutString++; // send next character & increment pointer // 20
// else // else // 21
// USART_ITConfig(USART3, USART_IT_TXE, DISABLE); // 22
 //};

//}
 
int main(void) {
 int i; 
	int j ;
	//LEDinit(); // 12
 //SWITCHinit(); // 13
 //LCD_init(); // 14
 USART3init(9600); // 15

 while (1) {
	 while (j < long(USART3->DR))
	 {	 	USART3->DR[j];
		 j++;
    
// if (GPIOE->IDR & S370) LED_GR_ON; else LED_GR_OFF; // 18
 for ( i = 0; i<100000; i++) {}; }// waste time // 19
 };
}

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[DAUDET78]

Tu ne connais pas les balises [CODE]...[/CODE] ... ça rend le code plus lisible !