mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_NXP/TARGET_LPC176X/gpio_api.c@323:9e901b0a5aa1, 2014-09-13 (annotated)
- Committer:
- shaoziyang
- Date:
- Sat Sep 13 14:25:46 2014 +0000
- Revision:
- 323:9e901b0a5aa1
- Parent:
- 227:7bd0639b8911
test with CLOCK_SETUP = 0
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
emilmont | 10:3bc89ef62ce7 | 1 | /* mbed Microcontroller Library |
emilmont | 10:3bc89ef62ce7 | 2 | * Copyright (c) 2006-2013 ARM Limited |
emilmont | 10:3bc89ef62ce7 | 3 | * |
emilmont | 10:3bc89ef62ce7 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
emilmont | 10:3bc89ef62ce7 | 5 | * you may not use this file except in compliance with the License. |
emilmont | 10:3bc89ef62ce7 | 6 | * You may obtain a copy of the License at |
emilmont | 10:3bc89ef62ce7 | 7 | * |
emilmont | 10:3bc89ef62ce7 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
emilmont | 10:3bc89ef62ce7 | 9 | * |
emilmont | 10:3bc89ef62ce7 | 10 | * Unless required by applicable law or agreed to in writing, software |
emilmont | 10:3bc89ef62ce7 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
emilmont | 10:3bc89ef62ce7 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
emilmont | 10:3bc89ef62ce7 | 13 | * See the License for the specific language governing permissions and |
emilmont | 10:3bc89ef62ce7 | 14 | * limitations under the License. |
emilmont | 10:3bc89ef62ce7 | 15 | */ |
mbed_official | 227:7bd0639b8911 | 16 | #include "mbed_assert.h" |
emilmont | 10:3bc89ef62ce7 | 17 | #include "gpio_api.h" |
emilmont | 10:3bc89ef62ce7 | 18 | #include "pinmap.h" |
emilmont | 10:3bc89ef62ce7 | 19 | |
emilmont | 10:3bc89ef62ce7 | 20 | uint32_t gpio_set(PinName pin) { |
mbed_official | 227:7bd0639b8911 | 21 | MBED_ASSERT(pin != (PinName)NC); |
emilmont | 10:3bc89ef62ce7 | 22 | pin_function(pin, 0); |
emilmont | 10:3bc89ef62ce7 | 23 | return (1 << ((int)pin & 0x1F)); |
emilmont | 10:3bc89ef62ce7 | 24 | } |
emilmont | 10:3bc89ef62ce7 | 25 | |
mbed_official | 113:65a335a675de | 26 | void gpio_init(gpio_t *obj, PinName pin) { |
emilmont | 10:3bc89ef62ce7 | 27 | obj->pin = pin; |
mbed_official | 227:7bd0639b8911 | 28 | if (pin == (PinName)NC) |
mbed_official | 227:7bd0639b8911 | 29 | return; |
mbed_official | 227:7bd0639b8911 | 30 | |
emilmont | 10:3bc89ef62ce7 | 31 | obj->mask = gpio_set(pin); |
mbed_official | 227:7bd0639b8911 | 32 | LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *)((int)pin & ~0x1F); |
emilmont | 10:3bc89ef62ce7 | 33 | obj->reg_set = &port_reg->FIOSET; |
emilmont | 10:3bc89ef62ce7 | 34 | obj->reg_clr = &port_reg->FIOCLR; |
emilmont | 10:3bc89ef62ce7 | 35 | obj->reg_in = &port_reg->FIOPIN; |
emilmont | 10:3bc89ef62ce7 | 36 | obj->reg_dir = &port_reg->FIODIR; |
emilmont | 10:3bc89ef62ce7 | 37 | } |
emilmont | 10:3bc89ef62ce7 | 38 | |
emilmont | 10:3bc89ef62ce7 | 39 | void gpio_mode(gpio_t *obj, PinMode mode) { |
emilmont | 10:3bc89ef62ce7 | 40 | pin_mode(obj->pin, mode); |
emilmont | 10:3bc89ef62ce7 | 41 | } |
emilmont | 10:3bc89ef62ce7 | 42 | |
emilmont | 10:3bc89ef62ce7 | 43 | void gpio_dir(gpio_t *obj, PinDirection direction) { |
mbed_official | 227:7bd0639b8911 | 44 | MBED_ASSERT(obj->pin != (PinName)NC); |
emilmont | 10:3bc89ef62ce7 | 45 | switch (direction) { |
mbed_official | 227:7bd0639b8911 | 46 | case PIN_INPUT : |
mbed_official | 227:7bd0639b8911 | 47 | *obj->reg_dir &= ~obj->mask; |
mbed_official | 227:7bd0639b8911 | 48 | break; |
mbed_official | 227:7bd0639b8911 | 49 | case PIN_OUTPUT: |
mbed_official | 227:7bd0639b8911 | 50 | *obj->reg_dir |= obj->mask; |
mbed_official | 227:7bd0639b8911 | 51 | break; |
emilmont | 10:3bc89ef62ce7 | 52 | } |
emilmont | 10:3bc89ef62ce7 | 53 | } |