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targets/hal/TARGET_STM/TARGET_STM32F0/gpio_api.c@630:825f75ca301e, 2015-09-28 (annotated)

Committer:
mbed_official
Date:
Mon Sep 28 10:45:10 2015 +0100
Revision:
630:825f75ca301e
Parent:
469:fc4922e0c183 
Synchronized with git revision 54fbe4144faf309c37205a5d39fa665daa919f10



Full URL: https://github.com/mbedmicro/mbed/commit/54fbe4144faf309c37205a5d39fa665daa919f10/



NUCLEO_F031K6 : Add new target

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 630:825f75ca301e 3 * Copyright (c) 2015, 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 630:825f75ca301e 37 uint32_t gpio_set(PinName pin) {
mbed_official 441:d2c15dda23c1 38 MBED_ASSERT(pin != (PinName)NC);
mbed_official 441:d2c15dda23c1 39
mbed_official 441:d2c15dda23c1 40 pin_function(pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 441:d2c15dda23c1 41
mbed_official 441:d2c15dda23c1 42 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
mbed_official 441:d2c15dda23c1 43 }
mbed_official 441:d2c15dda23c1 44
mbed_official 630:825f75ca301e 45 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 441:d2c15dda23c1 46 obj->pin = pin;
mbed_official 441:d2c15dda23c1 47 if (pin == (PinName)NC) {
mbed_official 441:d2c15dda23c1 48 return;
mbed_official 441:d2c15dda23c1 49 }
mbed_official 441:d2c15dda23c1 50
mbed_official 441:d2c15dda23c1 51 uint32_t port_index = STM_PORT(pin);
mbed_official 441:d2c15dda23c1 52
mbed_official 441:d2c15dda23c1 53 // Enable GPIO clock
mbed_official 441:d2c15dda23c1 54 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 441:d2c15dda23c1 55 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 441:d2c15dda23c1 56
mbed_official 441:d2c15dda23c1 57 // Fill GPIO object structure for future use
mbed_official 441:d2c15dda23c1 58 obj->mask = gpio_set(pin);
mbed_official 441:d2c15dda23c1 59 obj->reg_in = &gpio->IDR;
mbed_official 441:d2c15dda23c1 60 obj->reg_set = &gpio->BSRR;
mbed_official 441:d2c15dda23c1 61 obj->reg_clr = &gpio->BRR;
mbed_official 441:d2c15dda23c1 62 }
mbed_official 441:d2c15dda23c1 63
mbed_official 630:825f75ca301e 64 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 441:d2c15dda23c1 65 pin_mode(obj->pin, mode);
mbed_official 441:d2c15dda23c1 66 }
mbed_official 441:d2c15dda23c1 67
mbed_official 630:825f75ca301e 68 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 441:d2c15dda23c1 69 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 441:d2c15dda23c1 70 if (direction == PIN_OUTPUT) {
mbed_official 441:d2c15dda23c1 71 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
mbed_official 441:d2c15dda23c1 72 } else { // PIN_INPUT
mbed_official 441:d2c15dda23c1 73 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 441:d2c15dda23c1 74 }
mbed_official 441:d2c15dda23c1 75 }