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#include "gpio.h"
#include <stdint.h>
void gpioMode(gpio_pin_t pin, int mode)
{
register uint32_t r1 __asm("r1") = pin;
register uint32_t r2 __asm("r2") = mode;
__asm("\
mov r0, 0; \
mov r1, %0; \
mov r2, %1; \
svc 1; \
" :: "r" (r1), "r" (r2));
}
void gpioType(gpio_pin_t pin, int type)
{
register uint32_t r1 __asm("r1") = pin;
register uint32_t r2 __asm("r2") = type;
__asm("\
mov r0, 1; \
mov r1, %0; \
mov r2, %1; \
svc 1; \
" :: "r" (r1), "r" (r2));
}
void gpioPuPd(gpio_pin_t pin, int pupd)
{
register uint32_t r1 __asm("r1") = pin;
register uint32_t r2 __asm("r2") = pupd;
__asm("\
mov r0, 2; \
mov r1, %0; \
mov r2, %1; \
svc 1; \
" :: "r" (r1), "r" (r2));
}
void gpioSpeed(gpio_pin_t pin, int speed)
{
register uint32_t r1 __asm("r1") = pin;
register uint32_t r2 __asm("r2") = speed;
__asm("\
mov r0, 3; \
mov r1, %0; \
mov r2, %1; \
svc 1; \
" :: "r" (r1), "r" (r2));
}
void gpioWrite(gpio_pin_t pin, int value)
{
register uint32_t r1 __asm("r1") = pin;
register uint32_t r2 __asm("r2") = value;
__asm("\
mov r0, 4; \
mov r1, %0; \
mov r2, %1; \
svc 1; \
" :: "r" (r1), "r" (r2));
}
int gpioRead(gpio_pin_t pin)
{
int ret = 0;
register uint32_t r1 __asm("r1") = pin;
register uint32_t r2 __asm("r2") = (uint32_t)&ret;
__asm("\
mov r0, 5; \
mov r1, %0; \
mov r2, %1; \
svc 1; \
" :: "r" (r1), "r" (r2));
return ret;
}
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