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_K20D50M.h@4:6ebbf25b9167, 2014-07-16 (annotated)

Committer:
Sissors
Date:
Wed Jul 16 19:31:35 2014 +0000
Revision:
4:6ebbf25b9167
Parent:
FastIO_K20D50M.h@3:3dd9466e73fc 
First Nucleo, first version added: F401RE

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sissors 3:3dd9466e73fc 1 #ifdef TARGET_K20D50M
Sissors 3:3dd9466e73fc 2
Sissors 3:3dd9466e73fc 3 #include "mbed.h"
Sissors 3:3dd9466e73fc 4 #include "pinmap.h"
Sissors 3:3dd9466e73fc 5
Sissors 3:3dd9466e73fc 6 typedef struct {
Sissors 3:3dd9466e73fc 7 uint32_t mask;
Sissors 3:3dd9466e73fc 8 } fastio_vars;
Sissors 3:3dd9466e73fc 9
Sissors 3:3dd9466e73fc 10 #define PORT_BASE ((GPIO_Type *)(PTA_BASE + ((unsigned int)pin >> PORT_SHIFT) * 0x40))
Sissors 3:3dd9466e73fc 11 #define PINMASK (1 << ((pin & 0x7F) >> 2))
Sissors 3:3dd9466e73fc 12 #define PCR ((__IO uint32_t*)(PORTA_BASE + pin))
Sissors 3:3dd9466e73fc 13
Sissors 3:3dd9466e73fc 14 #define INIT_PIN container.mask = PINMASK; pin_function(pin, 1)
Sissors 3:3dd9466e73fc 15 #define DESTROY_PIN
Sissors 3:3dd9466e73fc 16
Sissors 3:3dd9466e73fc 17 #define SET_DIR_INPUT (PORT_BASE->PDDR &= ~PINMASK)
Sissors 3:3dd9466e73fc 18 #define SET_DIR_OUTPUT (PORT_BASE->PDDR |= PINMASK)
Sissors 3:3dd9466e73fc 19 #define SET_MODE(pull) (*PCR = (*PCR & ~0x3) | pull)
Sissors 3:3dd9466e73fc 20
Sissors 3:3dd9466e73fc 21 #define WRITE_PIN_SET (PORT_BASE->PSOR |= container.mask)
Sissors 3:3dd9466e73fc 22 #define WRITE_PIN_CLR (PORT_BASE->PCOR |= container.mask)
Sissors 3:3dd9466e73fc 23
Sissors 3:3dd9466e73fc 24 #define READ_PIN ((PORT_BASE->PDIR & container.mask) ? 1 : 0)
Sissors 3:3dd9466e73fc 25
Sissors 3:3dd9466e73fc 26 #endif