Ken Todotani / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F302R8/gpio_api.c@250:a49055e7a707, 2014-07-08 (annotated)

Committer:
mbed_official
Date:
Tue Jul 08 11:15:08 2014 +0100
Revision:
250:a49055e7a707
Parent:
227:7bd0639b8911
Child:
251:de9a1e4ffd79
Synchronized with git revision 3197042b65f8d28e856e1a7812d45e2fbe80e3f1



Full URL: https://github.com/mbedmicro/mbed/commit/3197042b65f8d28e856e1a7812d45e2fbe80e3f1/



error.h -> mbed_error.h

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 125:23cc3068a9e4 1 /* mbed Microcontroller Library
mbed_official 125:23cc3068a9e4 2 *******************************************************************************
mbed_official 125:23cc3068a9e4 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 125:23cc3068a9e4 4 * All rights reserved.
mbed_official 125:23cc3068a9e4 5 *
mbed_official 125:23cc3068a9e4 6 * Redistribution and use in source and binary forms, with or without
mbed_official 125:23cc3068a9e4 7 * modification, are permitted provided that the following conditions are met:
mbed_official 125:23cc3068a9e4 8 *
mbed_official 125:23cc3068a9e4 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 125:23cc3068a9e4 10 * this list of conditions and the following disclaimer.
mbed_official 125:23cc3068a9e4 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 125:23cc3068a9e4 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 125:23cc3068a9e4 13 * and/or other materials provided with the distribution.
mbed_official 125:23cc3068a9e4 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 125:23cc3068a9e4 15 * may be used to endorse or promote products derived from this software
mbed_official 125:23cc3068a9e4 16 * without specific prior written permission.
mbed_official 125:23cc3068a9e4 17 *
mbed_official 125:23cc3068a9e4 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 125:23cc3068a9e4 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 125:23cc3068a9e4 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 125:23cc3068a9e4 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 125:23cc3068a9e4 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 125:23cc3068a9e4 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 125:23cc3068a9e4 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 125:23cc3068a9e4 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 125:23cc3068a9e4 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 125:23cc3068a9e4 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 125:23cc3068a9e4 28 *******************************************************************************
mbed_official 125:23cc3068a9e4 29 */
mbed_official 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 125:23cc3068a9e4 31 #include "gpio_api.h"
mbed_official 125:23cc3068a9e4 32 #include "pinmap.h"
mbed_official 250:a49055e7a707 33 #include "mbed_error.h"
mbed_official 125:23cc3068a9e4 34
mbed_official 125:23cc3068a9e4 35 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 125:23cc3068a9e4 36
mbed_official 135:067cc8ba23da 37 uint32_t gpio_set(PinName pin) {
mbed_official 227:7bd0639b8911 38 MBED_ASSERT(pin != (PinName)NC);
mbed_official 125:23cc3068a9e4 39
mbed_official 125:23cc3068a9e4 40 pin_function(pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 125:23cc3068a9e4 41 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
mbed_official 125:23cc3068a9e4 42 }
mbed_official 125:23cc3068a9e4 43
mbed_official 125:23cc3068a9e4 44 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 227:7bd0639b8911 45 obj->pin = pin;
mbed_official 227:7bd0639b8911 46 if (pin == (PinName)NC)
mbed_official 227:7bd0639b8911 47 return;
mbed_official 125:23cc3068a9e4 48
mbed_official 125:23cc3068a9e4 49 uint32_t port_index = STM_PORT(pin);
mbed_official 135:067cc8ba23da 50
mbed_official 125:23cc3068a9e4 51 // Enable GPIO clock
mbed_official 125:23cc3068a9e4 52 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 125:23cc3068a9e4 53 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 135:067cc8ba23da 54
mbed_official 125:23cc3068a9e4 55 // Fill GPIO object structure for future use
mbed_official 125:23cc3068a9e4 56 obj->mask = gpio_set(pin);
mbed_official 125:23cc3068a9e4 57 obj->reg_in = &gpio->IDR;
mbed_official 125:23cc3068a9e4 58 obj->reg_set = &gpio->BSRR;
mbed_official 125:23cc3068a9e4 59 obj->reg_clr = &gpio->BRR;
mbed_official 125:23cc3068a9e4 60 }
mbed_official 125:23cc3068a9e4 61
mbed_official 125:23cc3068a9e4 62 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 125:23cc3068a9e4 63 pin_mode(obj->pin, mode);
mbed_official 125:23cc3068a9e4 64 }
mbed_official 125:23cc3068a9e4 65
mbed_official 125:23cc3068a9e4 66 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 227:7bd0639b8911 67 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 125:23cc3068a9e4 68 if (direction == PIN_OUTPUT) {
mbed_official 125:23cc3068a9e4 69 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_OUT, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 135:067cc8ba23da 70 } else { // PIN_INPUT
mbed_official 125:23cc3068a9e4 71 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 125:23cc3068a9e4 72 }
mbed_official 125:23cc3068a9e4 73 }