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 -

FastIO_K20D50M.h

Committer:
Sissors
Date:
2014-07-12
Revision:
3:3dd9466e73fc

File content as of revision 3:3dd9466e73fc:

#ifdef TARGET_K20D50M

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

typedef struct {
    uint32_t mask;
} fastio_vars;

#define PORT_BASE       ((GPIO_Type *)(PTA_BASE + ((unsigned int)pin >> PORT_SHIFT) * 0x40))
#define PINMASK         (1 << ((pin & 0x7F) >> 2))
#define PCR             ((__IO uint32_t*)(PORTA_BASE + pin))

#define INIT_PIN        container.mask = PINMASK; pin_function(pin, 1)
#define DESTROY_PIN     

#define SET_DIR_INPUT   (PORT_BASE->PDDR &= ~PINMASK)
#define SET_DIR_OUTPUT  (PORT_BASE->PDDR |= PINMASK)
#define SET_MODE(pull)  (*PCR = (*PCR & ~0x3) | pull)

#define WRITE_PIN_SET   (PORT_BASE->PSOR |= container.mask)
#define WRITE_PIN_CLR   (PORT_BASE->PCOR |= container.mask)

#define READ_PIN        ((PORT_BASE->PDIR & container.mask) ? 1 : 0)

#endif