mbed library sources
Dependents: frdm_kl05z_gpio_test
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Diff: targets/hal/TARGET_Freescale/TARGET_K20D5M/gpio_api.c
- Revision:
- 68:41613245dfd7
- Child:
- 113:65a335a675de
diff -r 78dfdb5b4d9e -r 41613245dfd7 targets/hal/TARGET_Freescale/TARGET_K20D5M/gpio_api.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_Freescale/TARGET_K20D5M/gpio_api.c Thu Dec 26 13:00:06 2013 +0000 @@ -0,0 +1,63 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "gpio_api.h" +#include "pinmap.h" + +uint32_t gpio_set(PinName pin) { + pin_function(pin, 1); + return 1 << ((pin & 0x7F) >> 2); +} + +void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) { + if(pin == NC) + return; + + obj->pin = pin; + obj->mask = gpio_set(pin); + + unsigned int port = (unsigned int)pin >> PORT_SHIFT; + + GPIO_Type *reg = (GPIO_Type *)(PTA_BASE + port * 0x40); + obj->reg_set = ®->PSOR; + obj->reg_clr = ®->PCOR; + obj->reg_in = ®->PDIR; + obj->reg_dir = ®->PDDR; + + gpio_dir(obj, direction); + switch (direction) { + case PIN_OUTPUT: + pin_mode(pin, PullNone); + break; + case PIN_INPUT : + pin_mode(pin, PullUp); + break; + } +} + +void gpio_mode(gpio_t *obj, PinMode mode) { + pin_mode(obj->pin, mode); +} + +void gpio_dir(gpio_t *obj, PinDirection direction) { + switch (direction) { + case PIN_INPUT : + *obj->reg_dir &= ~obj->mask; + break; + case PIN_OUTPUT: + *obj->reg_dir |= obj->mask; + break; + } +}