lzbp li / mbed-stm32l0l1-src-1

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Fork of mbed-stm32l0/l1-src by lzbp li

targets/hal/TARGET_STM/TARGET_STM32L0/gpio_api.c@491:b97b6b70036c, 2015-03-16 (annotated)

Committer:
mbed_official
Date:
Mon Mar 16 09:45:08 2015 +0000
Revision:
491:b97b6b70036c
Parent:
targets/hal/TARGET_STM/TARGET_NUCLEO_L053R8/gpio_api.c@402:09075a3b15e3
Child:
531:47d2b67c511f
Synchronized with git revision cc6830bf9eef1149fb6a6ebe64e20df7e6afc028



Full URL: https://github.com/mbedmicro/mbed/commit/cc6830bf9eef1149fb6a6ebe64e20df7e6afc028/



NUCLEO_L053R8/DISCO_L053C8 - hal files refactoring

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 181:a4cbdfbbd2f4 1 /* mbed Microcontroller Library
mbed_official 181:a4cbdfbbd2f4 2 *******************************************************************************
mbed_official 181:a4cbdfbbd2f4 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 181:a4cbdfbbd2f4 4 * All rights reserved.
mbed_official 181:a4cbdfbbd2f4 5 *
mbed_official 181:a4cbdfbbd2f4 6 * Redistribution and use in source and binary forms, with or without
mbed_official 181:a4cbdfbbd2f4 7 * modification, are permitted provided that the following conditions are met:
mbed_official 181:a4cbdfbbd2f4 8 *
mbed_official 181:a4cbdfbbd2f4 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 181:a4cbdfbbd2f4 10 * this list of conditions and the following disclaimer.
mbed_official 181:a4cbdfbbd2f4 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 181:a4cbdfbbd2f4 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 181:a4cbdfbbd2f4 13 * and/or other materials provided with the distribution.
mbed_official 181:a4cbdfbbd2f4 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 181:a4cbdfbbd2f4 15 * may be used to endorse or promote products derived from this software
mbed_official 181:a4cbdfbbd2f4 16 * without specific prior written permission.
mbed_official 181:a4cbdfbbd2f4 17 *
mbed_official 181:a4cbdfbbd2f4 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 181:a4cbdfbbd2f4 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 181:a4cbdfbbd2f4 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 181:a4cbdfbbd2f4 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 181:a4cbdfbbd2f4 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 181:a4cbdfbbd2f4 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 181:a4cbdfbbd2f4 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 181:a4cbdfbbd2f4 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 181:a4cbdfbbd2f4 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 181:a4cbdfbbd2f4 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 181:a4cbdfbbd2f4 28 *******************************************************************************
mbed_official 181:a4cbdfbbd2f4 29 */
mbed_official 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 181:a4cbdfbbd2f4 31 #include "gpio_api.h"
mbed_official 181:a4cbdfbbd2f4 32 #include "pinmap.h"
mbed_official 285:31249416b6f9 33 #include "mbed_error.h"
mbed_official 181:a4cbdfbbd2f4 34
mbed_official 181:a4cbdfbbd2f4 35 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 181:a4cbdfbbd2f4 36
mbed_official 402:09075a3b15e3 37 uint32_t gpio_set(PinName pin)
mbed_official 402:09075a3b15e3 38 {
mbed_official 227:7bd0639b8911 39 MBED_ASSERT(pin != (PinName)NC);
mbed_official 181:a4cbdfbbd2f4 40
mbed_official 181:a4cbdfbbd2f4 41 pin_function(pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 181:a4cbdfbbd2f4 42 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
mbed_official 181:a4cbdfbbd2f4 43 }
mbed_official 181:a4cbdfbbd2f4 44
mbed_official 402:09075a3b15e3 45 void gpio_init(gpio_t *obj, PinName pin)
mbed_official 402:09075a3b15e3 46 {
mbed_official 227:7bd0639b8911 47 obj->pin = pin;
mbed_official 227:7bd0639b8911 48 if (pin == (PinName)NC)
mbed_official 227:7bd0639b8911 49 return;
mbed_official 181:a4cbdfbbd2f4 50
mbed_official 181:a4cbdfbbd2f4 51 uint32_t port_index = STM_PORT(pin);
mbed_official 181:a4cbdfbbd2f4 52
mbed_official 181:a4cbdfbbd2f4 53 // Enable GPIO clock
mbed_official 181:a4cbdfbbd2f4 54 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 181:a4cbdfbbd2f4 55 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 181:a4cbdfbbd2f4 56
mbed_official 181:a4cbdfbbd2f4 57 // Fill GPIO object structure for future use
mbed_official 181:a4cbdfbbd2f4 58 obj->mask = gpio_set(pin);
mbed_official 181:a4cbdfbbd2f4 59 obj->reg_in = &gpio->IDR;
mbed_official 181:a4cbdfbbd2f4 60 obj->reg_set = &gpio->BSRR;
mbed_official 181:a4cbdfbbd2f4 61 obj->reg_clr = &gpio->BRR;
mbed_official 181:a4cbdfbbd2f4 62 }
mbed_official 181:a4cbdfbbd2f4 63
mbed_official 402:09075a3b15e3 64 void gpio_mode(gpio_t *obj, PinMode mode)
mbed_official 402:09075a3b15e3 65 {
mbed_official 181:a4cbdfbbd2f4 66 pin_mode(obj->pin, mode);
mbed_official 181:a4cbdfbbd2f4 67 }
mbed_official 181:a4cbdfbbd2f4 68
mbed_official 402:09075a3b15e3 69 void gpio_dir(gpio_t *obj, PinDirection direction)
mbed_official 402:09075a3b15e3 70 {
mbed_official 227:7bd0639b8911 71 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 181:a4cbdfbbd2f4 72 if (direction == PIN_OUTPUT) {
mbed_official 181:a4cbdfbbd2f4 73 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
mbed_official 181:a4cbdfbbd2f4 74 } else { // PIN_INPUT
mbed_official 181:a4cbdfbbd2f4 75 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 181:a4cbdfbbd2f4 76 }
mbed_official 181:a4cbdfbbd2f4 77 }