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#ifndef GPIO_H
#define GPIO_H
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
class GPIO {
private:
GPIO(const GPIO ©);
public:
GPIO () {}
enum Pin : unsigned char {
pa_0 = 0, pa_1, pa_2, pa_3, pa_4, pa_5, pa_6, pa_7,
pa_8, pa_9, pa_10, pa_11, pa_12, pa_13, pa_14, pa_15,
pb_0, pb_1, pb_2, pb_3, pb_4, pb_5, pb_6, pb_7,
pb_8, pb_9, pb_10, pb_11, pb_12, pb_13, pb_14, pb_15,
pc_0, pc_1, pc_2, pc_3, pc_4, pc_5, pc_6, pc_7,
pc_8, pc_9, pc_10, pc_11, pc_12, pc_13, pc_14, pc_15,
PIN_INVALID
};
inline void setup() {
rcc_periph_clock_enable(RCC_GPIOA);
rcc_periph_clock_enable(RCC_GPIOB);
rcc_periph_clock_enable(RCC_GPIOC);
// Set LED as output
gpio_mode_setup(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO5);
}
#pragma GCC diagnostic ignored "-Wunused-parameter"
inline void led_on(unsigned char id) {
gpio_set(GPIOA, GPIO5);
}
inline void led_off(unsigned char id) {
gpio_clear(GPIOA, GPIO5);
}
inline void led_toggle(unsigned char id) {
gpio_toggle(GPIOA, GPIO5);
}
#pragma GCC diagnostic pop
inline void input(unsigned char const pin) {
if (pin < pb_0) {
gpio_mode_setup(GPIOA, GPIO_MODE_INPUT, GPIO_PUPD_NONE, 1 << pin);
} else if (pin < pc_0) {
gpio_mode_setup(GPIOB, GPIO_MODE_INPUT, GPIO_PUPD_NONE, 1 << (pin - pb_0));
} else if (pin < PIN_INVALID) {
gpio_mode_setup(GPIOC, GPIO_MODE_INPUT, GPIO_PUPD_NONE, 1 << (pin - PIN_INVALID));
}
}
inline void input(unsigned char const pin, unsigned char const pull) {
}
inline void output(unsigned char const pin) {
if (pin < pb_0) {
gpio_mode_setup(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, 1 << pin);
} else if (pin < pc_0) {
gpio_mode_setup(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, 1 << (pin - pb_0));
} else if (pin < PIN_INVALID) {
gpio_mode_setup(GPIOC, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, 1 << (pin - PIN_INVALID));
}
}
/*
inline void output(unsigned char const pin, unsigned char const value) {
}
inline unsigned char read(unsigned char const pin) {
}*/
inline void write(unsigned char const pin, unsigned char value) {
if (pin < pb_0) {
if (value) {
gpio_port_write(GPIOA, gpio_port_read(GPIOA) | (1 << pin));
} else {
gpio_port_write(GPIOA, gpio_port_read(GPIOA) & ~(1 << pin));
}
} else if (pin < pc_0) {
if (value) {
gpio_port_write(GPIOB, gpio_port_read(GPIOB) | (1 << (pin-pc_0)));
} else {
gpio_port_write(GPIOB, gpio_port_read(GPIOB) & ~(1 << (pin-pc_0)));
}
} else if (pin < PIN_INVALID) {
if (value) {
gpio_port_write(GPIOC, gpio_port_read(GPIOC) | (1 << (pin-PIN_INVALID)));
} else {
gpio_port_write(GPIOC, gpio_port_read(GPIOC) & ~(1 << (pin-PIN_INVALID)));
}
}
}
};
extern GPIO gpio;
#endif
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