Emilio Monti / mbed-KL25Z

mbed libraries for KL25Z

Dependents:   FRDM_RGBLED

gpio_api.h@6:0d4e7384bff6, 2012-10-12 (annotated)

Committer:
emilmont
Date:
Fri Oct 12 10:06:08 2012 +0000
Revision:
6:0d4e7384bff6
Parent:
2:e9a661555b58
Child:
7:73c5efe92a6c
PinDirection moved to PinNames.h

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 2:e9a661555b58 1 /* mbed Microcontroller Library - gpio_api
emilmont 2:e9a661555b58 2 * Copyright (c) 2009-2011 ARM Limited. All rights reserved.
emilmont 2:e9a661555b58 3 */
emilmont 2:e9a661555b58 4
emilmont 2:e9a661555b58 5 #ifndef MBED_GPIO_API_H
emilmont 2:e9a661555b58 6 #define MBED_GPIO_API_H
emilmont 2:e9a661555b58 7
emilmont 2:e9a661555b58 8 #include "PinNames.h"
emilmont 2:e9a661555b58 9
emilmont 2:e9a661555b58 10 #ifdef __cplusplus
emilmont 2:e9a661555b58 11 extern "C" {
emilmont 2:e9a661555b58 12 #endif
emilmont 2:e9a661555b58 13
emilmont 2:e9a661555b58 14 /* This version of the gpio API caches the gpio register pointer and the pin mask */
emilmont 2:e9a661555b58 15 typedef struct {
emilmont 2:e9a661555b58 16 PinName pin;
emilmont 2:e9a661555b58 17 uint32_t mask;
emilmont 2:e9a661555b58 18
emilmont 2:e9a661555b58 19 __IO uint32_t *reg_dir;
emilmont 2:e9a661555b58 20 __IO uint32_t *reg_set;
emilmont 2:e9a661555b58 21 __IO uint32_t *reg_clr;
emilmont 2:e9a661555b58 22 __I uint32_t *reg_in;
emilmont 2:e9a661555b58 23 } gpio_object;
emilmont 2:e9a661555b58 24
emilmont 2:e9a661555b58 25 void gpio_init (gpio_object *obj, PinName pin, PinDirection direction);
emilmont 2:e9a661555b58 26
emilmont 2:e9a661555b58 27 void gpio_mode(gpio_object *obj, PinMode mode);
emilmont 2:e9a661555b58 28 void gpio_dir (gpio_object *obj, PinDirection direction);
emilmont 2:e9a661555b58 29
emilmont 2:e9a661555b58 30 static inline void gpio_write(gpio_object *obj, int value) {
emilmont 2:e9a661555b58 31 if (value)
emilmont 2:e9a661555b58 32 *obj->reg_set = obj->mask;
emilmont 2:e9a661555b58 33 else
emilmont 2:e9a661555b58 34 *obj->reg_clr = obj->mask;
emilmont 2:e9a661555b58 35 }
emilmont 2:e9a661555b58 36
emilmont 2:e9a661555b58 37 static inline int gpio_read(gpio_object *obj) {
emilmont 2:e9a661555b58 38 return ((*obj->reg_in & obj->mask) ? 1 : 0);
emilmont 2:e9a661555b58 39 }
emilmont 2:e9a661555b58 40
emilmont 2:e9a661555b58 41 #ifdef __cplusplus
emilmont 2:e9a661555b58 42 }
emilmont 2:e9a661555b58 43 #endif
emilmont 2:e9a661555b58 44
emilmont 2:e9a661555b58 45 #endif