Ken Todotani / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_F407VG/gpio_api.c@133:d4dda5c437f0, 2014-03-24 (annotated)

Committer:
mbed_official
Date:
Mon Mar 24 17:45:07 2014 +0000
Revision:
133:d4dda5c437f0
Child:
227:7bd0639b8911
Synchronized with git revision 47b961246bed973fe4cb8932781ffc8025b78a61



Full URL: https://github.com/mbedmicro/mbed/commit/47b961246bed973fe4cb8932781ffc8025b78a61/



[STM32F4-Discovery (STM32F407VG)] initial port

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 133:d4dda5c437f0 1 /* mbed Microcontroller Library
mbed_official 133:d4dda5c437f0 2 *******************************************************************************
mbed_official 133:d4dda5c437f0 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 133:d4dda5c437f0 4 * All rights reserved.
mbed_official 133:d4dda5c437f0 5 *
mbed_official 133:d4dda5c437f0 6 * Redistribution and use in source and binary forms, with or without
mbed_official 133:d4dda5c437f0 7 * modification, are permitted provided that the following conditions are met:
mbed_official 133:d4dda5c437f0 8 *
mbed_official 133:d4dda5c437f0 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 133:d4dda5c437f0 10 * this list of conditions and the following disclaimer.
mbed_official 133:d4dda5c437f0 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 133:d4dda5c437f0 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 133:d4dda5c437f0 13 * and/or other materials provided with the distribution.
mbed_official 133:d4dda5c437f0 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 133:d4dda5c437f0 15 * may be used to endorse or promote products derived from this software
mbed_official 133:d4dda5c437f0 16 * without specific prior written permission.
mbed_official 133:d4dda5c437f0 17 *
mbed_official 133:d4dda5c437f0 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 133:d4dda5c437f0 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 133:d4dda5c437f0 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 133:d4dda5c437f0 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 133:d4dda5c437f0 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 133:d4dda5c437f0 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 133:d4dda5c437f0 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 133:d4dda5c437f0 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 133:d4dda5c437f0 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 133:d4dda5c437f0 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 133:d4dda5c437f0 28 *******************************************************************************
mbed_official 133:d4dda5c437f0 29 */
mbed_official 133:d4dda5c437f0 30 #include "gpio_api.h"
mbed_official 133:d4dda5c437f0 31 #include "pinmap.h"
mbed_official 133:d4dda5c437f0 32 #include "error.h"
mbed_official 133:d4dda5c437f0 33 #include "stm32f4xx_hal.h"
mbed_official 133:d4dda5c437f0 34
mbed_official 133:d4dda5c437f0 35 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 133:d4dda5c437f0 36
mbed_official 133:d4dda5c437f0 37 uint32_t gpio_set(PinName pin) {
mbed_official 133:d4dda5c437f0 38 if (pin == NC) return 0;
mbed_official 133:d4dda5c437f0 39
mbed_official 133:d4dda5c437f0 40 pin_function(pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 133:d4dda5c437f0 41
mbed_official 133:d4dda5c437f0 42 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
mbed_official 133:d4dda5c437f0 43 }
mbed_official 133:d4dda5c437f0 44
mbed_official 133:d4dda5c437f0 45 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 133:d4dda5c437f0 46 if (pin == NC) return;
mbed_official 133:d4dda5c437f0 47
mbed_official 133:d4dda5c437f0 48 uint32_t port_index = STM_PORT(pin);
mbed_official 133:d4dda5c437f0 49
mbed_official 133:d4dda5c437f0 50 // Enable GPIO clock
mbed_official 133:d4dda5c437f0 51 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 133:d4dda5c437f0 52 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 133:d4dda5c437f0 53
mbed_official 133:d4dda5c437f0 54 // Fill GPIO object structure for future use
mbed_official 133:d4dda5c437f0 55 obj->pin = pin;
mbed_official 133:d4dda5c437f0 56 obj->mask = gpio_set(pin);
mbed_official 133:d4dda5c437f0 57 obj->reg_in = &gpio->IDR;
mbed_official 133:d4dda5c437f0 58 obj->reg_set = &gpio->BSRRL;
mbed_official 133:d4dda5c437f0 59 obj->reg_clr = &gpio->BSRRH;
mbed_official 133:d4dda5c437f0 60 }
mbed_official 133:d4dda5c437f0 61
mbed_official 133:d4dda5c437f0 62 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 133:d4dda5c437f0 63 pin_mode(obj->pin, mode);
mbed_official 133:d4dda5c437f0 64 }
mbed_official 133:d4dda5c437f0 65
mbed_official 133:d4dda5c437f0 66 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 133:d4dda5c437f0 67 if (direction == PIN_OUTPUT) {
mbed_official 133:d4dda5c437f0 68 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
mbed_official 133:d4dda5c437f0 69 }
mbed_official 133:d4dda5c437f0 70 else { // PIN_INPUT
mbed_official 133:d4dda5c437f0 71 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 133:d4dda5c437f0 72 }
mbed_official 133:d4dda5c437f0 73 }