mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_STM/TARGET_STM32F4XX/gpio_api.c@113:65a335a675de, 2014-03-10 (annotated)
- Committer:
- mbed_official
- Date:
- Mon Mar 10 11:30:07 2014 +0000
- Revision:
- 113:65a335a675de
- Parent:
- 20:4263a77256ae
- Child:
- 227:7bd0639b8911
Synchronized with git revision 423ddcb86e83e2e0d599ca7106d436eb3c47e6dd
Full URL: https://github.com/mbedmicro/mbed/commit/423ddcb86e83e2e0d599ca7106d436eb3c47e6dd/
proposed change of gpio_api (new update pull request)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bogdanm | 20:4263a77256ae | 1 | /* mbed Microcontroller Library |
bogdanm | 20:4263a77256ae | 2 | * Copyright (c) 2006-2013 ARM Limited |
bogdanm | 20:4263a77256ae | 3 | * |
bogdanm | 20:4263a77256ae | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
bogdanm | 20:4263a77256ae | 5 | * you may not use this file except in compliance with the License. |
bogdanm | 20:4263a77256ae | 6 | * You may obtain a copy of the License at |
bogdanm | 20:4263a77256ae | 7 | * |
bogdanm | 20:4263a77256ae | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
bogdanm | 20:4263a77256ae | 9 | * |
bogdanm | 20:4263a77256ae | 10 | * Unless required by applicable law or agreed to in writing, software |
bogdanm | 20:4263a77256ae | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
bogdanm | 20:4263a77256ae | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
bogdanm | 20:4263a77256ae | 13 | * See the License for the specific language governing permissions and |
bogdanm | 20:4263a77256ae | 14 | * limitations under the License. |
bogdanm | 20:4263a77256ae | 15 | */ |
bogdanm | 20:4263a77256ae | 16 | #include "gpio_api.h" |
bogdanm | 20:4263a77256ae | 17 | #include "pinmap.h" |
bogdanm | 20:4263a77256ae | 18 | |
bogdanm | 20:4263a77256ae | 19 | uint32_t gpio_set(PinName pin) { |
bogdanm | 20:4263a77256ae | 20 | uint32_t port_index = (uint32_t) pin >> 4; |
bogdanm | 20:4263a77256ae | 21 | |
bogdanm | 20:4263a77256ae | 22 | // Enable GPIO peripheral clock |
bogdanm | 20:4263a77256ae | 23 | RCC->AHB1ENR |= 1 << port_index; |
bogdanm | 20:4263a77256ae | 24 | |
bogdanm | 20:4263a77256ae | 25 | pin_function(pin, STM_PIN_DATA(0, 0)); |
bogdanm | 20:4263a77256ae | 26 | return 1 << ((uint32_t) pin & 0xF); |
bogdanm | 20:4263a77256ae | 27 | } |
bogdanm | 20:4263a77256ae | 28 | |
mbed_official | 113:65a335a675de | 29 | void gpio_init(gpio_t *obj, PinName pin) { |
bogdanm | 20:4263a77256ae | 30 | if(pin == NC) return; |
bogdanm | 20:4263a77256ae | 31 | |
bogdanm | 20:4263a77256ae | 32 | obj->pin = pin; |
bogdanm | 20:4263a77256ae | 33 | obj->mask = gpio_set(pin); |
bogdanm | 20:4263a77256ae | 34 | |
bogdanm | 20:4263a77256ae | 35 | uint32_t port_index = (uint32_t) pin >> 4; |
bogdanm | 20:4263a77256ae | 36 | |
bogdanm | 20:4263a77256ae | 37 | GPIO_TypeDef *port_reg = (GPIO_TypeDef *) (GPIOA_BASE + (port_index << 10)); |
bogdanm | 20:4263a77256ae | 38 | obj->reg_mode = &port_reg->MODER; |
bogdanm | 20:4263a77256ae | 39 | obj->reg_set = &port_reg->BSRRL; |
bogdanm | 20:4263a77256ae | 40 | obj->reg_clr = &port_reg->BSRRH; |
bogdanm | 20:4263a77256ae | 41 | obj->reg_in = &port_reg->IDR; |
bogdanm | 20:4263a77256ae | 42 | } |
bogdanm | 20:4263a77256ae | 43 | |
bogdanm | 20:4263a77256ae | 44 | void gpio_mode(gpio_t *obj, PinMode mode) { |
bogdanm | 20:4263a77256ae | 45 | pin_mode(obj->pin, mode); |
bogdanm | 20:4263a77256ae | 46 | } |
bogdanm | 20:4263a77256ae | 47 | |
bogdanm | 20:4263a77256ae | 48 | void gpio_dir(gpio_t *obj, PinDirection direction) { |
bogdanm | 20:4263a77256ae | 49 | switch (direction) { |
bogdanm | 20:4263a77256ae | 50 | case PIN_INPUT : pin_function(obj->pin, STM_PIN_DATA(0, 0)); break; |
bogdanm | 20:4263a77256ae | 51 | case PIN_OUTPUT: pin_function(obj->pin, STM_PIN_DATA(1, 0)); break; |
bogdanm | 20:4263a77256ae | 52 | } |
bogdanm | 20:4263a77256ae | 53 | } |