64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
|
|
#include <mc1322x.h>
|
|
#include <board.h>
|
|
|
|
#include "gpio-util.h"
|
|
|
|
void gpio_select_function(uint8_t gpio, uint8_t func) {
|
|
uint32_t mask = 3;
|
|
uint8_t major, minor, shift;
|
|
volatile uint32_t *base = GPIO_FUNC_SEL0;
|
|
uint32_t value;
|
|
major = gpio >> 4;
|
|
minor = gpio & 0xF;
|
|
shift = 2 * minor;
|
|
|
|
value = base[major];
|
|
value &= ~(mask << shift);
|
|
value |= (func << shift);
|
|
base[major] = value;
|
|
}
|
|
|
|
void gpio_reg_set(volatile uint32_t* reg, uint8_t bit) {
|
|
uint8_t major, minor;
|
|
major = bit / 32;
|
|
minor = bit % 32;
|
|
*(reg + major) |= (1UL << minor);
|
|
}
|
|
|
|
void gpio_reg_clear(volatile uint32_t* reg, uint8_t bit) {
|
|
uint8_t major, minor;
|
|
major = bit / 32;
|
|
minor = bit % 32;
|
|
*(reg + major) &= ~(1UL << minor);
|
|
}
|
|
|
|
void gpio_set_pad_dir(uint8_t gpio, uint8_t dir) {
|
|
uint8_t major, minor;
|
|
major = gpio / 32;
|
|
minor = gpio % 32;
|
|
if (dir) gpio_reg_set(GPIO_PAD_DIR0 + major, minor);
|
|
else gpio_reg_clear(GPIO_PAD_DIR0 + major, minor);
|
|
}
|
|
|
|
void gpio_set(uint8_t gpio) {
|
|
uint8_t major, minor;
|
|
major = gpio / 32;
|
|
minor = gpio % 32;
|
|
*(GPIO_DATA_SET0 + major) = (1UL << minor);
|
|
}
|
|
|
|
void gpio_reset(uint8_t gpio) {
|
|
uint8_t major, minor;
|
|
major = gpio / 32;
|
|
minor = gpio % 32;
|
|
*(GPIO_DATA_RESET0 + major) = (1UL << minor);
|
|
}
|
|
|
|
bool gpio_read(uint8_t gpio) {
|
|
uint8_t major, minor;
|
|
major = gpio / 32;
|
|
minor = gpio % 32;
|
|
return (*(GPIO_DATA0 + major) >> minor) & 1;
|
|
}
|