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oops, forgot a file

master
Firmware Batman 2017-05-18 14:18:45 -07:00
parent 625b34cba7
commit 0205f8de22
1 changed files with 40 additions and 0 deletions
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40
board/llgpio.h 100644
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#define MODE_INPUT 0
#define MODE_OUTPUT 1
#define MODE_ALTERNATE 2
#define MODE_ANALOG 3
void set_gpio_mode(GPIO_TypeDef *GPIO, int pin, int mode) {
uint32_t tmp = GPIO->MODER;
tmp &= ~(3 << (pin*2));
tmp |= (mode << (pin*2));
GPIO->MODER = tmp;
}
void set_gpio_output(GPIO_TypeDef *GPIO, int pin, int val) {
if (val) {
GPIO->ODR |= (1 << pin);
} else {
GPIO->ODR &= ~(1 << pin);
}
set_gpio_mode(GPIO, pin, MODE_OUTPUT);
}
void set_gpio_alternate(GPIO_TypeDef *GPIO, int pin, int mode) {
uint32_t tmp = GPIO->AFR[pin>>3];
tmp &= ~(0xF << ((pin&7)*4));
tmp |= mode << ((pin&7)*4);
GPIO->AFR[pin>>3] = tmp;
set_gpio_mode(GPIO, pin, MODE_ALTERNATE);
}
#define PULL_NONE 0
#define PULL_UP 1
#define PULL_DOWN 2
void set_gpio_pullup(GPIO_TypeDef *GPIO, int pin, int mode) {
uint32_t tmp = GPIO->PUPDR;
tmp &= ~(3 << (pin*2));
tmp |= (mode << (pin*2));
GPIO->PUPDR = tmp;
}