mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
Diff: targets/hal/TARGET_Freescale/TARGET_K20D50M/gpio_api.c
- Revision:
- 255:20b371a9491b
- Parent:
- 227:7bd0639b8911
diff -r 181b5e179739 -r 20b371a9491b targets/hal/TARGET_Freescale/TARGET_K20D50M/gpio_api.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_Freescale/TARGET_K20D50M/gpio_api.c Fri Jul 11 10:00:08 2014 +0100 @@ -0,0 +1,56 @@ +/* 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 "mbed_assert.h" +#include "gpio_api.h" +#include "pinmap.h" + +uint32_t gpio_set(PinName pin) { + MBED_ASSERT(pin != (PinName)NC); + pin_function(pin, 1); + return 1 << ((pin & 0x7F) >> 2); +} + +void gpio_init(gpio_t *obj, PinName pin) { + obj->pin = pin; + if (pin == (PinName)NC) + return; + + 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; +} + +void gpio_mode(gpio_t *obj, PinMode mode) { + pin_mode(obj->pin, mode); +} + +void gpio_dir(gpio_t *obj, PinDirection direction) { + MBED_ASSERT(obj->pin != (PinName)NC); + switch (direction) { + case PIN_INPUT : + *obj->reg_dir &= ~obj->mask; + break; + case PIN_OUTPUT: + *obj->reg_dir |= obj->mask; + break; + } +}