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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/gpio_api.c@219:993c9b0acbcc, 2014-06-02 (annotated)

Committer:
mbed_official
Date:
Mon Jun 02 09:45:07 2014 +0100
Revision:
219:993c9b0acbcc
Child:
239:8cadf13dff33
Synchronized with git revision cd741909614c52b886d34bad5007da2057c1a185



Full URL: https://github.com/mbedmicro/mbed/commit/cd741909614c52b886d34bad5007da2057c1a185/



[NUCLEO_F072RB] Add HAL files

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 219:993c9b0acbcc 1 /* mbed Microcontroller Library
mbed_official 219:993c9b0acbcc 2 *******************************************************************************
mbed_official 219:993c9b0acbcc 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 219:993c9b0acbcc 4 * All rights reserved.
mbed_official 219:993c9b0acbcc 5 *
mbed_official 219:993c9b0acbcc 6 * Redistribution and use in source and binary forms, with or without
mbed_official 219:993c9b0acbcc 7 * modification, are permitted provided that the following conditions are met:
mbed_official 219:993c9b0acbcc 8 *
mbed_official 219:993c9b0acbcc 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 219:993c9b0acbcc 10 * this list of conditions and the following disclaimer.
mbed_official 219:993c9b0acbcc 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 219:993c9b0acbcc 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 219:993c9b0acbcc 13 * and/or other materials provided with the distribution.
mbed_official 219:993c9b0acbcc 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 219:993c9b0acbcc 15 * may be used to endorse or promote products derived from this software
mbed_official 219:993c9b0acbcc 16 * without specific prior written permission.
mbed_official 219:993c9b0acbcc 17 *
mbed_official 219:993c9b0acbcc 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 219:993c9b0acbcc 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 219:993c9b0acbcc 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 219:993c9b0acbcc 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 219:993c9b0acbcc 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 219:993c9b0acbcc 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 219:993c9b0acbcc 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 219:993c9b0acbcc 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 219:993c9b0acbcc 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 219:993c9b0acbcc 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 219:993c9b0acbcc 28 *******************************************************************************
mbed_official 219:993c9b0acbcc 29 */
mbed_official 219:993c9b0acbcc 30 #include "gpio_api.h"
mbed_official 219:993c9b0acbcc 31 #include "pinmap.h"
mbed_official 219:993c9b0acbcc 32 #include "error.h"
mbed_official 219:993c9b0acbcc 33
mbed_official 219:993c9b0acbcc 34 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 219:993c9b0acbcc 35
mbed_official 219:993c9b0acbcc 36 uint32_t gpio_set(PinName pin) {
mbed_official 219:993c9b0acbcc 37 if (pin == NC) return 0;
mbed_official 219:993c9b0acbcc 38
mbed_official 219:993c9b0acbcc 39 pin_function(pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 219:993c9b0acbcc 40
mbed_official 219:993c9b0acbcc 41 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
mbed_official 219:993c9b0acbcc 42 }
mbed_official 219:993c9b0acbcc 43
mbed_official 219:993c9b0acbcc 44 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 219:993c9b0acbcc 45 if (pin == NC) return;
mbed_official 219:993c9b0acbcc 46
mbed_official 219:993c9b0acbcc 47 uint32_t port_index = STM_PORT(pin);
mbed_official 219:993c9b0acbcc 48
mbed_official 219:993c9b0acbcc 49 // Enable GPIO clock
mbed_official 219:993c9b0acbcc 50 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 219:993c9b0acbcc 51 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 219:993c9b0acbcc 52
mbed_official 219:993c9b0acbcc 53 // Fill GPIO object structure for future use
mbed_official 219:993c9b0acbcc 54 obj->pin = pin;
mbed_official 219:993c9b0acbcc 55 obj->mask = gpio_set(pin);
mbed_official 219:993c9b0acbcc 56 obj->reg_in = &gpio->IDR;
mbed_official 219:993c9b0acbcc 57 obj->reg_set = &gpio->BSRRL;
mbed_official 219:993c9b0acbcc 58 obj->reg_clr = &gpio->BSRRH;
mbed_official 219:993c9b0acbcc 59 }
mbed_official 219:993c9b0acbcc 60
mbed_official 219:993c9b0acbcc 61 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 219:993c9b0acbcc 62 pin_mode(obj->pin, mode);
mbed_official 219:993c9b0acbcc 63 }
mbed_official 219:993c9b0acbcc 64
mbed_official 219:993c9b0acbcc 65 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 219:993c9b0acbcc 66 if (direction == PIN_OUTPUT) {
mbed_official 219:993c9b0acbcc 67 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
mbed_official 219:993c9b0acbcc 68 } else { // PIN_INPUT
mbed_official 219:993c9b0acbcc 69 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 219:993c9b0acbcc 70 }
mbed_official 219:993c9b0acbcc 71 }