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.
45 lines
863 B
C
45 lines
863 B
C
7 years ago
|
#include <gpio.h>
|
||
|
|
|
||
|
|
void gpio_init(void)
|
||
|
|
{
|
||
|
|
// enable clocks
|
||
|
|
RCC->AHB2ENR |= 0xFF;
|
||
|
|
}
|
||
|
|
|
||
|
|
void gpio_pupd(GPIO_TypeDef *port, uint8_t pin, uint8_t pupd)
|
||
|
|
{
|
||
|
|
port->PUPDR &= ~(0x03 << (2 * pin));
|
||
|
|
port->PUPDR |= pupd << (2 * pin);
|
||
|
|
}
|
||
|
|
|
||
|
|
void gpio_speed(GPIO_TypeDef *port, uint8_t pin, uint8_t speed)
|
||
|
|
{
|
||
|
|
port->OSPEEDR &= ~(0x03 << (2 * pin));
|
||
|
|
port->OSPEEDR |= speed << (2 * pin);
|
||
|
|
}
|
||
|
|
|
||
|
|
void gpio_type(GPIO_TypeDef *port, uint8_t pin, uint8_t type)
|
||
|
|
{
|
||
|
|
port->OTYPER &= ~(1 << pin);
|
||
|
|
port->OTYPER |= type << pin;
|
||
|
|
}
|
||
|
|
|
||
|
|
void gpio_mode(GPIO_TypeDef *port, uint8_t pin, uint8_t mode)
|
||
|
|
{
|
||
|
|
port->MODER &= ~(0x03 << (2 * pin));
|
||
|
|
port->MODER |= mode << (2 * pin);
|
||
|
|
}
|
||
|
|
|
||
|
|
void gpio_dout(GPIO_TypeDef *port, uint8_t pin, uint8_t val)
|
||
|
|
{
|
||
|
|
if (val)
|
||
|
|
port->BSRR |= (1 << pin);
|
||
|
|
else
|
||
|
|
port->BRR |= (1 << pin);
|
||
|
|
}
|
||
|
|
|
||
|
|
uint8_t gpio_din(GPIO_TypeDef *port, uint8_t pin)
|
||
|
|
{
|
||
|
|
return port->IDR & (1 << pin);
|
||
|
|
}
|