mbed library sources
Dependents: frdm_kl05z_gpio_test
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Diff: targets/hal/TARGET_NXP/TARGET_LPC408X/gpio_api.c
- Revision:
- 15:4892fe388435
- Child:
- 113:65a335a675de
diff -r 096882eb0961 -r 4892fe388435 targets/hal/TARGET_NXP/TARGET_LPC408X/gpio_api.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_NXP/TARGET_LPC408X/gpio_api.c Wed Aug 07 16:43:59 2013 +0300 @@ -0,0 +1,53 @@ +/* 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, 0); + return (1 << ((int)pin & 0x1F)); +} + +void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) { + if (pin == NC) return; + + obj->pin = pin; + obj->mask = gpio_set(pin); + + LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *) ((int)(LPC_GPIO0_BASE+pin) & ~0x1F); + + obj->reg_set = &port_reg->SET; + obj->reg_clr = &port_reg->CLR; + obj->reg_in = &port_reg->PIN; + obj->reg_dir = &port_reg->DIR; + + gpio_dir(obj, direction); + switch (direction) { + case PIN_OUTPUT: pin_mode(pin, PullNone); break; + case PIN_INPUT : pin_mode(pin, PullDown); 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; + } +}