shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F302R8/gpio_api.c@125:23cc3068a9e4, 2014-03-19 (annotated)

Committer:
mbed_official
Date:
Wed Mar 19 10:15:22 2014 +0000
Revision:
125:23cc3068a9e4
Child:
135:067cc8ba23da
Synchronized with git revision ace35dfba3748c7cdc102eb38ec6b9e1067c3252



Full URL: https://github.com/mbedmicro/mbed/commit/ace35dfba3748c7cdc102eb38ec6b9e1067c3252/



[NUCLEO_F302R8] Add cmsis and hal files + change F401RE clock to 84MHz

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 125:23cc3068a9e4 30 #include "gpio_api.h"
mbed_official 125:23cc3068a9e4 31 #include "pinmap.h"
mbed_official 125:23cc3068a9e4 32 #include "error.h"
mbed_official 125:23cc3068a9e4 33
mbed_official 125:23cc3068a9e4 34 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 125:23cc3068a9e4 35
mbed_official 125:23cc3068a9e4 36 uint32_t gpio_set(PinName pin) {
mbed_official 125:23cc3068a9e4 37 if (pin == NC) return 0;
mbed_official 125:23cc3068a9e4 38
mbed_official 125:23cc3068a9e4 39 pin_function(pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 125:23cc3068a9e4 40
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 125:23cc3068a9e4 45 if (pin == NC) return;
mbed_official 125:23cc3068a9e4 46
mbed_official 125:23cc3068a9e4 47 uint32_t port_index = STM_PORT(pin);
mbed_official 125:23cc3068a9e4 48
mbed_official 125:23cc3068a9e4 49 // Enable GPIO clock
mbed_official 125:23cc3068a9e4 50 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 125:23cc3068a9e4 51 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 125:23cc3068a9e4 52
mbed_official 125:23cc3068a9e4 53 // Fill GPIO object structure for future use
mbed_official 125:23cc3068a9e4 54 obj->pin = pin;
mbed_official 125:23cc3068a9e4 55 obj->mask = gpio_set(pin);
mbed_official 125:23cc3068a9e4 56 obj->reg_in = &gpio->IDR;
mbed_official 125:23cc3068a9e4 57 obj->reg_set = &gpio->BSRR;
mbed_official 125:23cc3068a9e4 58 obj->reg_clr = &gpio->BRR;
mbed_official 125:23cc3068a9e4 59 }
mbed_official 125:23cc3068a9e4 60
mbed_official 125:23cc3068a9e4 61 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 125:23cc3068a9e4 62 pin_mode(obj->pin, mode);
mbed_official 125:23cc3068a9e4 63 }
mbed_official 125:23cc3068a9e4 64
mbed_official 125:23cc3068a9e4 65 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 125:23cc3068a9e4 66 if (direction == PIN_OUTPUT) {
mbed_official 125:23cc3068a9e4 67 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_OUT, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 125:23cc3068a9e4 68 }
mbed_official 125:23cc3068a9e4 69 else { // PIN_INPUT
mbed_official 125:23cc3068a9e4 70 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 125:23cc3068a9e4 71 }
mbed_official 125:23cc3068a9e4 72 }