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Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32F0/gpio_api.c@469:fc4922e0c183, 2015-02-09 (annotated)

Committer:
mbed_official
Date:
Mon Feb 09 09:30:07 2015 +0000
Revision:
469:fc4922e0c183
Parent:
targets/hal/TARGET_STM/TARGET_NUCLEO_F070RB/gpio_api.c@441:d2c15dda23c1
Child:
630:825f75ca301e
Synchronized with git revision 06e2b3c8802cb4f78e9958ba9923755bd458e8b7



Full URL: https://github.com/mbedmicro/mbed/commit/06e2b3c8802cb4f78e9958ba9923755bd458e8b7/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 441:d2c15dda23c1 1 /* mbed Microcontroller Library
mbed_official 441:d2c15dda23c1 2 *******************************************************************************
mbed_official 441:d2c15dda23c1 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 441:d2c15dda23c1 4 * All rights reserved.
mbed_official 441:d2c15dda23c1 5 *
mbed_official 441:d2c15dda23c1 6 * Redistribution and use in source and binary forms, with or without
mbed_official 441:d2c15dda23c1 7 * modification, are permitted provided that the following conditions are met:
mbed_official 441:d2c15dda23c1 8 *
mbed_official 441:d2c15dda23c1 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 441:d2c15dda23c1 10 * this list of conditions and the following disclaimer.
mbed_official 441:d2c15dda23c1 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 441:d2c15dda23c1 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 441:d2c15dda23c1 13 * and/or other materials provided with the distribution.
mbed_official 441:d2c15dda23c1 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 441:d2c15dda23c1 15 * may be used to endorse or promote products derived from this software
mbed_official 441:d2c15dda23c1 16 * without specific prior written permission.
mbed_official 441:d2c15dda23c1 17 *
mbed_official 441:d2c15dda23c1 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 441:d2c15dda23c1 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 441:d2c15dda23c1 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 441:d2c15dda23c1 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 441:d2c15dda23c1 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 441:d2c15dda23c1 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 441:d2c15dda23c1 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 441:d2c15dda23c1 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 441:d2c15dda23c1 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 441:d2c15dda23c1 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 441:d2c15dda23c1 28 *******************************************************************************
mbed_official 441:d2c15dda23c1 29 */
mbed_official 441:d2c15dda23c1 30 #include "mbed_assert.h"
mbed_official 441:d2c15dda23c1 31 #include "gpio_api.h"
mbed_official 441:d2c15dda23c1 32 #include "pinmap.h"
mbed_official 441:d2c15dda23c1 33 #include "mbed_error.h"
mbed_official 441:d2c15dda23c1 34
mbed_official 441:d2c15dda23c1 35 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 441:d2c15dda23c1 36
mbed_official 441:d2c15dda23c1 37 uint32_t gpio_set(PinName pin)
mbed_official 441:d2c15dda23c1 38 {
mbed_official 441:d2c15dda23c1 39 MBED_ASSERT(pin != (PinName)NC);
mbed_official 441:d2c15dda23c1 40
mbed_official 441:d2c15dda23c1 41 pin_function(pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 441:d2c15dda23c1 42
mbed_official 441:d2c15dda23c1 43 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
mbed_official 441:d2c15dda23c1 44 }
mbed_official 441:d2c15dda23c1 45
mbed_official 441:d2c15dda23c1 46 void gpio_init(gpio_t *obj, PinName pin)
mbed_official 441:d2c15dda23c1 47 {
mbed_official 441:d2c15dda23c1 48 obj->pin = pin;
mbed_official 441:d2c15dda23c1 49 if (pin == (PinName)NC) {
mbed_official 441:d2c15dda23c1 50 return;
mbed_official 441:d2c15dda23c1 51 }
mbed_official 441:d2c15dda23c1 52
mbed_official 441:d2c15dda23c1 53 uint32_t port_index = STM_PORT(pin);
mbed_official 441:d2c15dda23c1 54
mbed_official 441:d2c15dda23c1 55 // Enable GPIO clock
mbed_official 441:d2c15dda23c1 56 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 441:d2c15dda23c1 57 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 441:d2c15dda23c1 58
mbed_official 441:d2c15dda23c1 59 // Fill GPIO object structure for future use
mbed_official 441:d2c15dda23c1 60 obj->mask = gpio_set(pin);
mbed_official 441:d2c15dda23c1 61 obj->reg_in = &gpio->IDR;
mbed_official 441:d2c15dda23c1 62 obj->reg_set = &gpio->BSRR;
mbed_official 441:d2c15dda23c1 63 obj->reg_clr = &gpio->BRR;
mbed_official 441:d2c15dda23c1 64 }
mbed_official 441:d2c15dda23c1 65
mbed_official 441:d2c15dda23c1 66 void gpio_mode(gpio_t *obj, PinMode mode)
mbed_official 441:d2c15dda23c1 67 {
mbed_official 441:d2c15dda23c1 68 pin_mode(obj->pin, mode);
mbed_official 441:d2c15dda23c1 69 }
mbed_official 441:d2c15dda23c1 70
mbed_official 441:d2c15dda23c1 71 void gpio_dir(gpio_t *obj, PinDirection direction)
mbed_official 441:d2c15dda23c1 72 {
mbed_official 441:d2c15dda23c1 73 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 441:d2c15dda23c1 74 if (direction == PIN_OUTPUT) {
mbed_official 441:d2c15dda23c1 75 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
mbed_official 441:d2c15dda23c1 76 } else { // PIN_INPUT
mbed_official 441:d2c15dda23c1 77 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 441:d2c15dda23c1 78 }
mbed_official 441:d2c15dda23c1 79 }