test / mbed-src

mbed library sources

Dependents:   bare

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F030R8/gpio_api.c@76:aeb1df146756, 2014-01-27 (annotated)

Committer:
mbed_official
Date:
Mon Jan 27 14:30:07 2014 +0000
Revision:
76:aeb1df146756
Child:
77:b5886236e6f0
Synchronized with git revision a31ec9c5f7bcb5c8a1b2eced103f6a1dfa921abd



Full URL: https://github.com/mbedmicro/mbed/commit/a31ec9c5f7bcb5c8a1b2eced103f6a1dfa921abd/



Add NUCLEO_L152RE

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 76:aeb1df146756 30 #include "gpio_api.h"
mbed_official 76:aeb1df146756 31 #include "pinmap.h"
mbed_official 76:aeb1df146756 32 #include "error.h"
mbed_official 76:aeb1df146756 33
mbed_official 76:aeb1df146756 34 uint32_t gpio_set(PinName pin) {
mbed_official 76:aeb1df146756 35 if (pin == NC) return 0;
mbed_official 76:aeb1df146756 36
mbed_official 76:aeb1df146756 37 pin_function(pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 38
mbed_official 76:aeb1df146756 39 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
mbed_official 76:aeb1df146756 40 }
mbed_official 76:aeb1df146756 41
mbed_official 76:aeb1df146756 42 void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) {
mbed_official 76:aeb1df146756 43 GPIO_TypeDef *gpio;
mbed_official 76:aeb1df146756 44
mbed_official 76:aeb1df146756 45 if (pin == NC) return;
mbed_official 76:aeb1df146756 46
mbed_official 76:aeb1df146756 47 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 48
mbed_official 76:aeb1df146756 49 // Get GPIO structure base address
mbed_official 76:aeb1df146756 50 switch (port_index) {
mbed_official 76:aeb1df146756 51 case PortA:
mbed_official 76:aeb1df146756 52 gpio = (GPIO_TypeDef *)GPIOA_BASE;
mbed_official 76:aeb1df146756 53 break;
mbed_official 76:aeb1df146756 54 case PortB:
mbed_official 76:aeb1df146756 55 gpio = (GPIO_TypeDef *)GPIOB_BASE;
mbed_official 76:aeb1df146756 56 break;
mbed_official 76:aeb1df146756 57 case PortC:
mbed_official 76:aeb1df146756 58 gpio = (GPIO_TypeDef *)GPIOC_BASE;
mbed_official 76:aeb1df146756 59 break;
mbed_official 76:aeb1df146756 60 case PortD:
mbed_official 76:aeb1df146756 61 gpio = (GPIO_TypeDef *)GPIOD_BASE;
mbed_official 76:aeb1df146756 62 break;
mbed_official 76:aeb1df146756 63 case PortF:
mbed_official 76:aeb1df146756 64 gpio = (GPIO_TypeDef *)GPIOF_BASE;
mbed_official 76:aeb1df146756 65 break;
mbed_official 76:aeb1df146756 66 default:
mbed_official 76:aeb1df146756 67 error("GPIO port number is not correct.");
mbed_official 76:aeb1df146756 68 break;
mbed_official 76:aeb1df146756 69 }
mbed_official 76:aeb1df146756 70
mbed_official 76:aeb1df146756 71 // Fill GPIO object structure for future use
mbed_official 76:aeb1df146756 72 obj->pin = pin;
mbed_official 76:aeb1df146756 73 obj->mask = gpio_set(pin);
mbed_official 76:aeb1df146756 74 obj->reg_in = &gpio->IDR;
mbed_official 76:aeb1df146756 75 obj->reg_set = &gpio->BSRR;
mbed_official 76:aeb1df146756 76 obj->reg_clr = &gpio->BRR;
mbed_official 76:aeb1df146756 77
mbed_official 76:aeb1df146756 78 // Configure GPIO
mbed_official 76:aeb1df146756 79 if (direction == PIN_OUTPUT) {
mbed_official 76:aeb1df146756 80 pin_function(pin, STM_PIN_DATA(GPIO_Mode_OUT, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 81 }
mbed_official 76:aeb1df146756 82 else { // PIN_INPUT
mbed_official 76:aeb1df146756 83 pin_function(pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 84 }
mbed_official 76:aeb1df146756 85 }
mbed_official 76:aeb1df146756 86
mbed_official 76:aeb1df146756 87 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 76:aeb1df146756 88 pin_mode(obj->pin, mode);
mbed_official 76:aeb1df146756 89 }
mbed_official 76:aeb1df146756 90
mbed_official 76:aeb1df146756 91 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 76:aeb1df146756 92 if (direction == PIN_OUTPUT) {
mbed_official 76:aeb1df146756 93 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_OUT, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 94 }
mbed_official 76:aeb1df146756 95 else { // PIN_INPUT
mbed_official 76:aeb1df146756 96 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 97 }
mbed_official 76:aeb1df146756 98 }