Am 25.09.2013 12:45, schrieb Rogier Wolff: > > Hi, > > I just got myself an STM8 discovery board. I'm trying to get the > development environment working. I cloned the SVN repository for the > latest version of SDCC. > > I found an stm8 example, at: > https://github.com/vdudouyt/sdcc-examples-stm8/ > > The blinky.c file starts out by including the stm8l.h header. sdcc > cannot find this file. And neither can I. > > Where is that header supposed to come from? > > (I have an STM8S processor, not STM8L, but I'm hoping that findind > stm8l.h will help me find stm8s.h too... :-) ) > > Roger. >
I have attached my own blinky example. This one is a bit more complicated, since it uses a timer instead of a delay loop. It does not use any stm8-specific header (the header file just contains some defines). It ist meant for the STM8L, but by adjusting the defines, could be used for STM8S. Philipp
#include <stdint.h>
#define PE_ODR (*(volatile uint8_t *)0x5014)
#define PE_DDR (*(volatile uint8_t *)0x5016)
#define PE_CR1 (*(volatile uint8_t *)0x5017)
#define CLK_DIVR (*(volatile uint8_t *)0x50c0)
#define CLK_PCKENR2 (*(volatile uint8_t *)0x50c4)
#define TIM1_CR1 (*(volatile uint8_t *)0x52b0)
#define TIM1_PCNTRH (*(volatile uint8_t *)0x52bf)
#define TIM1_PCNTRL (*(volatile uint8_t *)0x52c0)
#define TIM1_PSCRH (*(volatile uint8_t *)0x52c1)
#define TIM1_PSCRL (*(volatile uint8_t *)0x52c2)
unsigned int clock(void)
{
unsigned char h = TIM1_PCNTRH;
unsigned char l = TIM1_PCNTRL;
return((unsigned int)(h) << 8 | l);
}
int main() {
CLK_DIVR = 0x00; // Set the frequency to 16 MHz
CLK_PCKENR2 |= 0x02; // Enable clock to timer
// Configure timer
// 1000 ticks per second
TIM1_PSCRH = 0x3e;
TIM1_PSCRL = 0x80;
// Enable timer
TIM1_CR1 = 0x01;
// Configure pins
PE_DDR = 0x80;
PE_CR1 = 0x80;
// Loop
do {
PE_ODR &= 0x7f;
if (clock() % 1000 <= 500)
PE_ODR |= 0x80;
} while(1);
}
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