Paul Paterson / mbed-src-CanNucleoF0

mbed library sources, include can_api for nucleo-f091rc

Dependents:   CanNucleoF0_example

Fork of mbed-src by mbed official

targets/hal/TARGET_Freescale/TARGET_K20XX/gpio_api.c@645:13c87cbecd54, 2016-01-07 (annotated)

Committer:
ptpaterson
Date:
Thu Jan 07 05:49:05 2016 +0000
Revision:
645:13c87cbecd54
Parent:
445:3312ed629f01 
corrected freeze on CAN_RECEIVE_IT

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 445:3312ed629f01 1 /* mbed Microcontroller Library
mbed_official 445:3312ed629f01 2 * Copyright (c) 2006-2015 ARM Limited
mbed_official 445:3312ed629f01 3 *
mbed_official 445:3312ed629f01 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 445:3312ed629f01 5 * you may not use this file except in compliance with the License.
mbed_official 445:3312ed629f01 6 * You may obtain a copy of the License at
mbed_official 445:3312ed629f01 7 *
mbed_official 445:3312ed629f01 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 445:3312ed629f01 9 *
mbed_official 445:3312ed629f01 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 445:3312ed629f01 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 445:3312ed629f01 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 445:3312ed629f01 13 * See the License for the specific language governing permissions and
mbed_official 445:3312ed629f01 14 * limitations under the License.
mbed_official 445:3312ed629f01 15 */
mbed_official 445:3312ed629f01 16 #include "mbed_assert.h"
mbed_official 445:3312ed629f01 17 #include "gpio_api.h"
mbed_official 445:3312ed629f01 18 #include "pinmap.h"
mbed_official 445:3312ed629f01 19
mbed_official 445:3312ed629f01 20 uint32_t gpio_set(PinName pin) {
mbed_official 445:3312ed629f01 21 MBED_ASSERT(pin != (PinName)NC);
mbed_official 445:3312ed629f01 22 pin_function(pin, 1);
mbed_official 445:3312ed629f01 23 return 1 << ((pin & 0x7F) >> 2);
mbed_official 445:3312ed629f01 24 }
mbed_official 445:3312ed629f01 25
mbed_official 445:3312ed629f01 26 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 445:3312ed629f01 27 obj->pin = pin;
mbed_official 445:3312ed629f01 28 if (pin == (PinName)NC)
mbed_official 445:3312ed629f01 29 return;
mbed_official 445:3312ed629f01 30
mbed_official 445:3312ed629f01 31 obj->mask = gpio_set(pin);
mbed_official 445:3312ed629f01 32
mbed_official 445:3312ed629f01 33 unsigned int port = (unsigned int)pin >> PORT_SHIFT;
mbed_official 445:3312ed629f01 34
mbed_official 445:3312ed629f01 35 GPIO_Type *reg = (GPIO_Type *)(PTA_BASE + port * 0x40);
mbed_official 445:3312ed629f01 36 obj->reg_set = &reg->PSOR;
mbed_official 445:3312ed629f01 37 obj->reg_clr = &reg->PCOR;
mbed_official 445:3312ed629f01 38 obj->reg_in = &reg->PDIR;
mbed_official 445:3312ed629f01 39 obj->reg_dir = &reg->PDDR;
mbed_official 445:3312ed629f01 40 }
mbed_official 445:3312ed629f01 41
mbed_official 445:3312ed629f01 42 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 445:3312ed629f01 43 pin_mode(obj->pin, mode);
mbed_official 445:3312ed629f01 44 }
mbed_official 445:3312ed629f01 45
mbed_official 445:3312ed629f01 46 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 445:3312ed629f01 47 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 445:3312ed629f01 48 switch (direction) {
mbed_official 445:3312ed629f01 49 case PIN_INPUT :
mbed_official 445:3312ed629f01 50 *obj->reg_dir &= ~obj->mask;
mbed_official 445:3312ed629f01 51 break;
mbed_official 445:3312ed629f01 52 case PIN_OUTPUT:
mbed_official 445:3312ed629f01 53 *obj->reg_dir |= obj->mask;
mbed_official 445:3312ed629f01 54 break;
mbed_official 445:3312ed629f01 55 }
mbed_official 445:3312ed629f01 56 }