untitled

#define PB_ODR		*(unsigned char*)0x5005
#define PB_DDR		*(unsigned char*)0x5007
#define PB_CR1		*(unsigned char*)0x5008
#define TIM2_CNTR *(uint16_t*)0x530C
// Unsigned int is 16 bit in STM8.
// So, maximum possible value is 65536.

unsigned long int dl; // Delay
#include <stm8s.h>



void timer_init(void)
{

	//TIM2->CR1 |= 1<<7; //ARR buffered
/**********************for example 1*******************************/
		//Enable the update generation so that PSC and ARR can be loaded
   TIM2->EGR |= 1<<0;
//Timer prescaler value, PSC[3:0] =1 so Ftim2
    TIM2->PSCR = 1;
    //Timer Auto reload register value
    TIM2->ARRH = 0xff;
		TIM2->ARRL = 0xff;

	TIM2->SR1 &= ~(1<<0);

    TIM2->CR1 |= 1<<2; //generate update at Counter overflow/underflow

TIM2_CNTR = 30;

     CLK->CCOR |= CLK_CCOR_CCOEN | CLK_CCOR_CCOSEL;

}
//Using Pooling example1
void delay_us(uint16_t us)
{
	uint16_t i = us;
	TIM2_CNTR = 0;
	TIM2->CR1 |= (1<<0);
	while(TIM2_CNTR < i);
	TIM2->CR1 &= ~(1<<0);
	//TIM2->SR1 &= ~(1<<0); //clear flag

}
void delay_ms(uint16_t ms)
{
  uint16_t i;
	uint16_t milisec = ms;
	for(i=0; i<milisec; i++)
	delay_us(1000);
}
void delay_sec(uint16_t secs)
{
  uint16_t i;
	uint16_t sec =secs;
	for(i=0; i<sec; i++)
	delay_ms(1000);
}
unsigned long int dl; // Delay
int main()
{
	PB_ODR = 0x00;	// Turn all pins of port B to low
	PB_DDR |= (1 << 5)|(1<<4); // 0x00100000 PB5 is now output
	PB_CR1 |= (1 << 5)|(1<<4); // 0x00100000 PB5 is now pushpull

  timer_init();

	while(1)
	{
		PB_ODR ^= (1 << 5); // Toggle PB5 output
		//PB_ODR &= 1<< 4;
		delay_sec(1);
		//for (dl = 0; dl < 29000; dl++) {}
	}
}