You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
27 lines
534 B
C
27 lines
534 B
C
6 years ago
|
#ifndef PRIV_GPIO_H_
|
||
|
|
#define PRIV_GPIO_H_
|
||
|
|
|
||
|
|
#define GPIO_MODE 0
|
||
|
|
#define GPIO_TYPE 1
|
||
|
|
#define GPIO_PUPD 2
|
||
|
|
#define GPIO_SPEED 3
|
||
|
|
#define GPIO_OUT 4
|
||
|
|
|
||
|
|
void gpio(uint32_t call, uint32_t port, uint32_t pin, uint32_t value)
|
||
|
|
{
|
||
|
|
register uint32_t r0 asm("r0") = call;
|
||
|
|
register uint32_t r1 asm("r1") = port;
|
||
|
|
register uint32_t r2 asm("r2") = pin;
|
||
|
|
register uint32_t r3 asm("r3") = value;
|
||
|
|
|
||
|
|
asm("\
|
||
|
|
mov r0, %0; \
|
||
|
|
mov r1, %1; \
|
||
|
|
mov r2, %2; \
|
||
|
|
mov r3, %3; \
|
||
|
|
svc 1; \
|
||
|
|
" :: "r" (r0), "r" (r1), "r" (r2), "r" (r3));
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // PRIV_GPIO_H_
|