paolo della vedova / FastIO

Replacement for regular GPIO (DigitalIn, DigitalOut, DigitalInOut) classes which has superior speed. (modified for use opendrain in stm32)

Dependents:   hctl2032_encoder

Fork of FastIO by Erik -

Devices/FastIO_NUCLEO_F401.h@4:6ebbf25b9167, 2014-07-16 (annotated)

Committer:
Sissors
Date:
Wed Jul 16 19:31:35 2014 +0000
Revision:
4:6ebbf25b9167
Child:
5:3dd1ab9bbc59
First Nucleo, first version added: F401RE

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sissors 4:6ebbf25b9167 1 #ifdef TARGET_NUCLEO_F401RE
Sissors 4:6ebbf25b9167 2
Sissors 4:6ebbf25b9167 3 #include "mbed.h"
Sissors 4:6ebbf25b9167 4 #include "pinmap.h"
Sissors 4:6ebbf25b9167 5
Sissors 4:6ebbf25b9167 6 typedef struct {
Sissors 4:6ebbf25b9167 7 uint32_t mask;
Sissors 4:6ebbf25b9167 8 } fastio_vars;
Sissors 4:6ebbf25b9167 9
Sissors 4:6ebbf25b9167 10 #define PINMASK (1 << STM_PIN(pin))
Sissors 4:6ebbf25b9167 11 #define PORT ((GPIO_TypeDef *)(GPIOA_BASE + 0x0400 * STM_PORT(pin)))
Sissors 4:6ebbf25b9167 12
Sissors 4:6ebbf25b9167 13 #define INIT_PIN RCC->AHB1ENR |= (1 << STM_PORT(pin)); container.mask = PINMASK
Sissors 4:6ebbf25b9167 14 #define DESTROY_PIN
Sissors 4:6ebbf25b9167 15
Sissors 4:6ebbf25b9167 16 #define SET_DIR_INPUT (PORT->MODER &= ~(GPIO_MODER_MODER0 << (STM_PIN(pin) * 2)))
Sissors 4:6ebbf25b9167 17 #define SET_DIR_OUTPUT (PORT->MODER |= (GPIO_MODER_MODER0_0 << (STM_PIN(pin) * 2)))
Sissors 4:6ebbf25b9167 18 #define SET_MODE(pull) pin_mode(pin, pull);
Sissors 4:6ebbf25b9167 19
Sissors 4:6ebbf25b9167 20 #define WRITE_PIN_SET (PORT->BSRRL = PINMASK)
Sissors 4:6ebbf25b9167 21 #define WRITE_PIN_CLR (PORT->BSRRH = PINMASK)
Sissors 4:6ebbf25b9167 22
Sissors 4:6ebbf25b9167 23 #define READ_PIN ((PORT->IDR & container.mask) ? 1 : 0)
Sissors 4:6ebbf25b9167 24
Sissors 4:6ebbf25b9167 25 #endif