Mateusz Grzywacz / FastIO

Replacement for regular GPIO (DigitalIn, DigitalOut, DigitalInOut) classes which has superior speed.

Fork of FastIO by Erik -

Devices/FastIO_STM32L1.h

Committer:
amateusz
Date:
2018-04-17
Revision:
23:23a43a288e2c

File content as of revision 23:23a43a288e2c:

#if defined(TARGET_STM32L1)

#include "mbed.h"
#include "pinmap.h"

typedef struct {
    uint32_t mask;
} fastio_vars;

#define PINMASK             (1 << STM_PIN(pin))
#define PORT                ((GPIO_TypeDef *)(GPIOA_BASE + 0x0400 * STM_PORT(pin)))


#define INIT_PIN            RCC->AHBENR |= (1 << STM_PORT(pin)); (PORT->MODER &= ~(GPIO_MODER_MODER0_1 << (STM_PIN(pin) * 2))); container.mask = PINMASK
#define DESTROY_PIN     

#define SET_DIR_INPUT       (PORT->MODER &= ~(GPIO_MODER_MODER0_0 << (STM_PIN(pin) * 2)))
#define SET_DIR_OUTPUT      (PORT->MODER |= (GPIO_MODER_MODER0_0 << (STM_PIN(pin) * 2)))
#define SET_MODE(pull)      pin_mode(pin, pull);

#define WRITE_PIN_SET       (PORT->BSRR = PINMASK)
#define WRITE_PIN_CLR       (PORT->BRR = PINMASK)

#define READ_PIN            ((PORT->IDR & container.mask) ? 1 : 0)

#endif