mbed official / mbed-src

mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

Import librarymbed

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_STM32F3XX/gpio_api.c@621:9c82b0f79f3d, 2015-09-11 (annotated)

Committer:
mbed_official
Date:
Fri Sep 11 09:30:09 2015 +0100
Revision:
621:9c82b0f79f3d
Parent:
285:31249416b6f9 
Synchronized with git revision 6c1d63e069ab9bd86de92e8296ca783681257538



Full URL: https://github.com/mbedmicro/mbed/commit/6c1d63e069ab9bd86de92e8296ca783681257538/



ignore target files not supported by the yotta module

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 155:8435094ec241 1 /* mbed Microcontroller Library
mbed_official 155:8435094ec241 2 *******************************************************************************
mbed_official 155:8435094ec241 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 155:8435094ec241 4 * All rights reserved.
mbed_official 155:8435094ec241 5 *
mbed_official 155:8435094ec241 6 * Redistribution and use in source and binary forms, with or without
mbed_official 155:8435094ec241 7 * modification, are permitted provided that the following conditions are met:
mbed_official 155:8435094ec241 8 *
mbed_official 155:8435094ec241 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 155:8435094ec241 10 * this list of conditions and the following disclaimer.
mbed_official 155:8435094ec241 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 155:8435094ec241 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 155:8435094ec241 13 * and/or other materials provided with the distribution.
mbed_official 155:8435094ec241 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 155:8435094ec241 15 * may be used to endorse or promote products derived from this software
mbed_official 155:8435094ec241 16 * without specific prior written permission.
mbed_official 155:8435094ec241 17 *
mbed_official 155:8435094ec241 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 155:8435094ec241 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 155:8435094ec241 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 155:8435094ec241 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 155:8435094ec241 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 155:8435094ec241 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 155:8435094ec241 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 155:8435094ec241 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 155:8435094ec241 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 155:8435094ec241 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 155:8435094ec241 28 *******************************************************************************
mbed_official 155:8435094ec241 29 */
mbed_official 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 155:8435094ec241 31 #include "gpio_api.h"
mbed_official 155:8435094ec241 32 #include "pinmap.h"
mbed_official 285:31249416b6f9 33 #include "mbed_error.h"
mbed_official 155:8435094ec241 34
mbed_official 155:8435094ec241 35 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 155:8435094ec241 36
mbed_official 155:8435094ec241 37 uint32_t gpio_set(PinName pin) {
mbed_official 227:7bd0639b8911 38 MBED_ASSERT(pin != (PinName)NC);
mbed_official 155:8435094ec241 39
mbed_official 155:8435094ec241 40 pin_function(pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 155:8435094ec241 41
mbed_official 155:8435094ec241 42 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
mbed_official 155:8435094ec241 43 }
mbed_official 155:8435094ec241 44
mbed_official 155:8435094ec241 45 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 227:7bd0639b8911 46 obj->pin = pin;
mbed_official 227:7bd0639b8911 47 if (pin == (PinName)NC)
mbed_official 227:7bd0639b8911 48 return;
mbed_official 155:8435094ec241 49
mbed_official 155:8435094ec241 50 uint32_t port_index = STM_PORT(pin);
mbed_official 155:8435094ec241 51
mbed_official 155:8435094ec241 52 // Enable GPIO clock
mbed_official 155:8435094ec241 53 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 155:8435094ec241 54 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 155:8435094ec241 55
mbed_official 155:8435094ec241 56 // Fill GPIO object structure for future use
mbed_official 155:8435094ec241 57 obj->mask = gpio_set(pin);
mbed_official 155:8435094ec241 58 obj->reg_in = &gpio->IDR;
mbed_official 155:8435094ec241 59 obj->reg_set = &gpio->BSRR;
mbed_official 155:8435094ec241 60 obj->reg_clr = &gpio->BRR;
mbed_official 155:8435094ec241 61 }
mbed_official 155:8435094ec241 62
mbed_official 155:8435094ec241 63 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 155:8435094ec241 64 pin_mode(obj->pin, mode);
mbed_official 155:8435094ec241 65 }
mbed_official 155:8435094ec241 66
mbed_official 155:8435094ec241 67 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 227:7bd0639b8911 68 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 155:8435094ec241 69 if (direction == PIN_OUTPUT) {
mbed_official 155:8435094ec241 70 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_OUT, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 155:8435094ec241 71 } else { // PIN_INPUT
mbed_official 155:8435094ec241 72 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 155:8435094ec241 73 }
mbed_official 155:8435094ec241 74 }