Hi… I am transferring “TEST” string from the USART 1 to the hyper terminal. But at hyper terminal end I get only the char “T”. After that microcontroller unable to transfer the data. Please go through the following program, is there any problem in the code.This code is written for stm32 arm controller.
#include <stm32f10x_lib.h> #include <stdio.h> #include"stm32_reg.h"
int main() { unsigned char a[]="TEST",i; RCC->CFGR=0x001D8402; RCC->CR= 0x01010082; RCC->APB2ENR |= RCC_APB2ENR_AFIOEN ; AFIO->MAPR &= ~(1<<2) ; RCC->APB2ENR |= RCC_APB2ENR_IOPAEN; GPIOA->CRH &= ~(0xFFUL << 4); GPIOA->CRH |= (0x0BUL << 4); GPIOA->CRH |= (0x04UL << 8); RCC->APB2ENR |= RCC_APB2ENR_USART1EN; USART1->BRR |= 0x27<<4; USART1->BRR |=0x1; USART1->CR1= 0x0000; USART1->CR2=0x0000; USART1->CR3=0x0000; USART1->CR1|=0x8; USART1->CR1 |= USART_CR1_UE; for(i=0;i<7;i++) { USART1->DR=a[i] ; while (!(USART1->SR & USART_FLAG_TXE)); } }
With one important difference - did you notice...?!
"Plz go through it"
Have you gone through it?
Have you stepped through it with the debugger?
Have you verified it against the chip's datasheet, and the examples provided by ST?