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mbed SDK library sources

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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.

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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_F103RB/gpio_api.c@70:c1fbde68b492, 2014-01-07 (annotated)

Committer:
mbed_official
Date:
Tue Jan 07 11:00:05 2014 +0000
Revision:
70:c1fbde68b492
Parent:
52:a51c77007319
Child:
76:aeb1df146756
Synchronized with git revision 3f438a307904431f2782db3c8fa49946b9fc1d85



Full URL: https://github.com/mbedmicro/mbed/commit/3f438a307904431f2782db3c8fa49946b9fc1d85/



[NUCLEO_F103RB] license text changed + sleep hal updated

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 52:a51c77007319 1 /* mbed Microcontroller Library
mbed_official 70:c1fbde68b492 2 *******************************************************************************
mbed_official 70:c1fbde68b492 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 70:c1fbde68b492 4 * All rights reserved.
mbed_official 52:a51c77007319 5 *
mbed_official 70:c1fbde68b492 6 * Redistribution and use in source and binary forms, with or without
mbed_official 70:c1fbde68b492 7 * modification, are permitted provided that the following conditions are met:
mbed_official 52:a51c77007319 8 *
mbed_official 70:c1fbde68b492 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 70:c1fbde68b492 10 * this list of conditions and the following disclaimer.
mbed_official 70:c1fbde68b492 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 70:c1fbde68b492 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 70:c1fbde68b492 13 * and/or other materials provided with the distribution.
mbed_official 70:c1fbde68b492 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 70:c1fbde68b492 15 * may be used to endorse or promote products derived from this software
mbed_official 70:c1fbde68b492 16 * without specific prior written permission.
mbed_official 52:a51c77007319 17 *
mbed_official 70:c1fbde68b492 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 70:c1fbde68b492 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 70:c1fbde68b492 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 70:c1fbde68b492 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 70:c1fbde68b492 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 70:c1fbde68b492 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 70:c1fbde68b492 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 70:c1fbde68b492 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 70:c1fbde68b492 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 70:c1fbde68b492 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 70:c1fbde68b492 28 *******************************************************************************
mbed_official 52:a51c77007319 29 */
mbed_official 52:a51c77007319 30 #include "gpio_api.h"
mbed_official 52:a51c77007319 31 #include "pinmap.h"
mbed_official 52:a51c77007319 32
mbed_official 52:a51c77007319 33 uint32_t gpio_set(PinName pin) {
mbed_official 52:a51c77007319 34 if (pin == NC) return 0;
mbed_official 52:a51c77007319 35
mbed_official 52:a51c77007319 36 pin_function(pin, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 52:a51c77007319 37
mbed_official 52:a51c77007319 38 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
mbed_official 52:a51c77007319 39 }
mbed_official 52:a51c77007319 40
mbed_official 52:a51c77007319 41 void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) {
mbed_official 52:a51c77007319 42 if (pin == NC) return;
mbed_official 52:a51c77007319 43
mbed_official 52:a51c77007319 44 // Get GPIO structure base address
mbed_official 52:a51c77007319 45 uint32_t pin_number = (uint32_t)pin;
mbed_official 52:a51c77007319 46 uint32_t port_index = (pin_number >> 4);
mbed_official 52:a51c77007319 47 GPIO_TypeDef *gpio = (GPIO_TypeDef *)(GPIOA_BASE + (port_index << 10));
mbed_official 52:a51c77007319 48
mbed_official 52:a51c77007319 49 // Fill GPIO object structure for future use
mbed_official 52:a51c77007319 50 obj->pin = pin;
mbed_official 52:a51c77007319 51 obj->mask = gpio_set(pin);
mbed_official 52:a51c77007319 52 obj->reg_in = &gpio->IDR;
mbed_official 52:a51c77007319 53 obj->reg_set = &gpio->BSRR;
mbed_official 52:a51c77007319 54 obj->reg_clr = &gpio->BRR;
mbed_official 52:a51c77007319 55
mbed_official 52:a51c77007319 56 // Configure GPIO
mbed_official 52:a51c77007319 57 if (direction == PIN_OUTPUT) {
mbed_official 52:a51c77007319 58 pin_function(pin, STM_PIN_DATA(GPIO_Mode_Out_PP, 0));
mbed_official 52:a51c77007319 59 }
mbed_official 52:a51c77007319 60 else { // PIN_INPUT
mbed_official 52:a51c77007319 61 pin_function(pin, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 52:a51c77007319 62 }
mbed_official 52:a51c77007319 63 }
mbed_official 52:a51c77007319 64
mbed_official 52:a51c77007319 65 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 52:a51c77007319 66 pin_mode(obj->pin, mode);
mbed_official 52:a51c77007319 67 }
mbed_official 52:a51c77007319 68
mbed_official 52:a51c77007319 69 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 52:a51c77007319 70 if (direction == PIN_OUTPUT) {
mbed_official 52:a51c77007319 71 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_Out_PP, 0));
mbed_official 52:a51c77007319 72 }
mbed_official 52:a51c77007319 73 else { // PIN_INPUT
mbed_official 52:a51c77007319 74 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 52:a51c77007319 75 }
mbed_official 52:a51c77007319 76 }