Ken Todotani / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_L152RE/gpio_api.c@250:a49055e7a707, 2014-07-08 (annotated)

Committer:
mbed_official
Date:
Tue Jul 08 11:15:08 2014 +0100
Revision:
250:a49055e7a707
Parent:
227:7bd0639b8911
Child:
251:de9a1e4ffd79
Synchronized with git revision 3197042b65f8d28e856e1a7812d45e2fbe80e3f1



Full URL: https://github.com/mbedmicro/mbed/commit/3197042b65f8d28e856e1a7812d45e2fbe80e3f1/



error.h -> mbed_error.h

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /* mbed Microcontroller Library
mbed_official 76:aeb1df146756 2 *******************************************************************************
mbed_official 76:aeb1df146756 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 76:aeb1df146756 4 * All rights reserved.
mbed_official 76:aeb1df146756 5 *
mbed_official 76:aeb1df146756 6 * Redistribution and use in source and binary forms, with or without
mbed_official 76:aeb1df146756 7 * modification, are permitted provided that the following conditions are met:
mbed_official 76:aeb1df146756 8 *
mbed_official 76:aeb1df146756 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 76:aeb1df146756 10 * this list of conditions and the following disclaimer.
mbed_official 76:aeb1df146756 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 76:aeb1df146756 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 76:aeb1df146756 13 * and/or other materials provided with the distribution.
mbed_official 76:aeb1df146756 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 76:aeb1df146756 15 * may be used to endorse or promote products derived from this software
mbed_official 76:aeb1df146756 16 * without specific prior written permission.
mbed_official 76:aeb1df146756 17 *
mbed_official 76:aeb1df146756 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 76:aeb1df146756 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 76:aeb1df146756 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 76:aeb1df146756 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 76:aeb1df146756 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 76:aeb1df146756 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 76:aeb1df146756 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 76:aeb1df146756 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 76:aeb1df146756 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 76:aeb1df146756 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 76:aeb1df146756 28 *******************************************************************************
mbed_official 76:aeb1df146756 29 */
mbed_official 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 76:aeb1df146756 31 #include "gpio_api.h"
mbed_official 76:aeb1df146756 32 #include "pinmap.h"
mbed_official 250:a49055e7a707 33 #include "mbed_error.h"
mbed_official 76:aeb1df146756 34
mbed_official 76:aeb1df146756 35 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 76:aeb1df146756 36
mbed_official 174:8bb9f3a33240 37 uint32_t gpio_set(PinName pin) {
mbed_official 227:7bd0639b8911 38 MBED_ASSERT(pin != (PinName)NC);
mbed_official 76:aeb1df146756 39
mbed_official 76:aeb1df146756 40 pin_function(pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 41 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
mbed_official 76:aeb1df146756 42 }
mbed_official 76:aeb1df146756 43
mbed_official 113:65a335a675de 44 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 227:7bd0639b8911 45 obj->pin = pin;
mbed_official 227:7bd0639b8911 46 if (pin == (PinName)NC)
mbed_official 227:7bd0639b8911 47 return;
mbed_official 76:aeb1df146756 48 uint32_t port_index = STM_PORT(pin);
mbed_official 174:8bb9f3a33240 49
mbed_official 76:aeb1df146756 50 // Enable GPIO clock
mbed_official 76:aeb1df146756 51 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 84:f54042cbc282 52 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 174:8bb9f3a33240 53
mbed_official 76:aeb1df146756 54 // Fill GPIO object structure for future use
mbed_official 76:aeb1df146756 55 obj->mask = gpio_set(pin);
mbed_official 76:aeb1df146756 56 obj->reg_in = &gpio->IDR;
mbed_official 76:aeb1df146756 57 obj->reg_set = &gpio->BSRRL;
mbed_official 76:aeb1df146756 58 obj->reg_clr = &gpio->BSRRH;
mbed_official 76:aeb1df146756 59 }
mbed_official 76:aeb1df146756 60
mbed_official 76:aeb1df146756 61 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 76:aeb1df146756 62 pin_mode(obj->pin, mode);
mbed_official 76:aeb1df146756 63 }
mbed_official 76:aeb1df146756 64
mbed_official 76:aeb1df146756 65 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 227:7bd0639b8911 66 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 76:aeb1df146756 67 if (direction == PIN_OUTPUT) {
mbed_official 76:aeb1df146756 68 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_OUT, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 174:8bb9f3a33240 69 } else { // PIN_INPUT
mbed_official 76:aeb1df146756 70 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 71 }
mbed_official 76:aeb1df146756 72 }