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#include <stdint.h>
#include <stdio.h>
#include <ctype.h>
#define DEVICE DEV_STM8S208
#include "stm8.h"
volatile unsigned char *sif= (unsigned char *)0x7fff;
int sifchar(int c)
{
*sif= 'p';
*sif= c;
return c;
}
void waitsend()
{
while(!(USART->sr & USART_SR_TXE));
}
int putchar(int c)
{
while(!(USART->sr & USART_SR_TXE));
USART->dr = c;
return c;
}
char received()
{
return USART->sr & USART_SR_RXNE;
}
char getchar()
{
while (!received())
;
return USART->dr;
}
void prints(char *s)
{
char i= 0;
while (s[i])
{
putchar(s[i]);
i++;
}
}
void main(void)
{
unsigned long i = 0;
CLK->ckdivr = 0x00; // Set the frequency to 16 MHz
CLK->pckenr1 = 0xFF; // Enable peripherals
USART->cr2 = USART_CR2_TEN; // Allow TX only yet
USART->cr3 &= ~(USART_CR3_STOP1 | USART_CR3_STOP2); // 1 stop bit
USART->brr2 = 0x03;
USART->brr1 = 0x68; // 9600 baud
printf("Hello World!\n");
waitsend();
USART->cr2 = USART_CR2_TEN | USART_CR2_REN; // Allow TX and RX
for (;;)
{
if (received())
{
char c= getchar();
*sif= 'x';*sif= c;
putchar(toupper(c));
if (c == 'Z')
*sif= 's';
}
}
}
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