Posted on July 18, 2014 at 13:48Hi all,
I'm trying to use the USART2 on the STM32F105CL to communicate with an hyper-terminal but unfortunatly, the hyper-terminal is not receiving anything. Even with a very simple code.
/* Includes ------------------------------------------------------------------*/
#include <stdio.h>
#include <string.h>
#include ''stm32f10x.h''
#include ''stm32f10x_gpio.h''
#include ''stm32f10x_rcc.h''
#include ''stm32f10x_usart.h''
#include ''leds.h''
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
int main(void)
{
LED_Init();
/* ************************************************************/
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIO clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
/* Enable USART clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE);
//Configure USART2 pins: Rx and Tx ----------------------------
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 57600;
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(USART2, &USART_InitStructure);
USART_Cmd(USART2,ENABLE);
/* ********************************************/
while (1)
{
for(int i=0;i<100000;i++)
{
LED_On();
}
for(int i=0;i<100000;i++)
{
LED_Off();
}
while(USART_GetFlagStatus(USART2,USART_FLAG_TC) == RESET){};
USART_SendData(USART2,'a');
while(USART_GetFlagStatus(USART2,USART_FLAG_TXE) == RESET){};
}
return 0;
}
Sombody has any clue ?
Thanks,
