Abdessamad El Abbassi / mbed-src-temp

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_F051R8/pinmap.c@130:1dec54e4aec3, 2014-03-21 (annotated)

Committer:
mbed_official
Date:
Fri Mar 21 11:45:09 2014 +0000
Revision:
130:1dec54e4aec3
Child:
142:7f2b6c44bbe3
Synchronized with git revision e5c9ff6781a4e277a5a454e5a0b037f76e31739d



Full URL: https://github.com/mbedmicro/mbed/commit/e5c9ff6781a4e277a5a454e5a0b037f76e31739d/



STM32F0-Discovery (STM32F051R8) initial port

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 130:1dec54e4aec3 1 /* mbed Microcontroller Library
mbed_official 130:1dec54e4aec3 2 *******************************************************************************
mbed_official 130:1dec54e4aec3 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 130:1dec54e4aec3 4 * All rights reserved.
mbed_official 130:1dec54e4aec3 5 *
mbed_official 130:1dec54e4aec3 6 * Redistribution and use in source and binary forms, with or without
mbed_official 130:1dec54e4aec3 7 * modification, are permitted provided that the following conditions are met:
mbed_official 130:1dec54e4aec3 8 *
mbed_official 130:1dec54e4aec3 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 130:1dec54e4aec3 10 * this list of conditions and the following disclaimer.
mbed_official 130:1dec54e4aec3 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 130:1dec54e4aec3 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 130:1dec54e4aec3 13 * and/or other materials provided with the distribution.
mbed_official 130:1dec54e4aec3 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 130:1dec54e4aec3 15 * may be used to endorse or promote products derived from this software
mbed_official 130:1dec54e4aec3 16 * without specific prior written permission.
mbed_official 130:1dec54e4aec3 17 *
mbed_official 130:1dec54e4aec3 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 130:1dec54e4aec3 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 130:1dec54e4aec3 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 130:1dec54e4aec3 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 130:1dec54e4aec3 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 130:1dec54e4aec3 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 130:1dec54e4aec3 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 130:1dec54e4aec3 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 130:1dec54e4aec3 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 130:1dec54e4aec3 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 130:1dec54e4aec3 28 *******************************************************************************
mbed_official 130:1dec54e4aec3 29 */
mbed_official 130:1dec54e4aec3 30 #include "pinmap.h"
mbed_official 130:1dec54e4aec3 31 #include "error.h"
mbed_official 130:1dec54e4aec3 32
mbed_official 130:1dec54e4aec3 33 // Enable GPIO clock and return GPIO base address
mbed_official 130:1dec54e4aec3 34 uint32_t Set_GPIO_Clock(uint32_t port_idx) {
mbed_official 130:1dec54e4aec3 35 uint32_t gpio_add = 0;
mbed_official 130:1dec54e4aec3 36 switch (port_idx) {
mbed_official 130:1dec54e4aec3 37 case PortA:
mbed_official 130:1dec54e4aec3 38 gpio_add = GPIOA_BASE;
mbed_official 130:1dec54e4aec3 39 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
mbed_official 130:1dec54e4aec3 40 break;
mbed_official 130:1dec54e4aec3 41 case PortB:
mbed_official 130:1dec54e4aec3 42 gpio_add = GPIOB_BASE;
mbed_official 130:1dec54e4aec3 43 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
mbed_official 130:1dec54e4aec3 44 break;
mbed_official 130:1dec54e4aec3 45 case PortC:
mbed_official 130:1dec54e4aec3 46 gpio_add = GPIOC_BASE;
mbed_official 130:1dec54e4aec3 47 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
mbed_official 130:1dec54e4aec3 48 break;
mbed_official 130:1dec54e4aec3 49 case PortD:
mbed_official 130:1dec54e4aec3 50 gpio_add = GPIOD_BASE;
mbed_official 130:1dec54e4aec3 51 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, ENABLE);
mbed_official 130:1dec54e4aec3 52 break;
mbed_official 130:1dec54e4aec3 53 case PortF:
mbed_official 130:1dec54e4aec3 54 gpio_add = GPIOF_BASE;
mbed_official 130:1dec54e4aec3 55 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE);
mbed_official 130:1dec54e4aec3 56 break;
mbed_official 130:1dec54e4aec3 57 default:
mbed_official 130:1dec54e4aec3 58 error("Port number is not correct.");
mbed_official 130:1dec54e4aec3 59 break;
mbed_official 130:1dec54e4aec3 60 }
mbed_official 130:1dec54e4aec3 61 return gpio_add;
mbed_official 130:1dec54e4aec3 62 }
mbed_official 130:1dec54e4aec3 63
mbed_official 130:1dec54e4aec3 64 /**
mbed_official 130:1dec54e4aec3 65 * Configure pin (mode, speed, output type and pull-up/pull-down)
mbed_official 130:1dec54e4aec3 66 */
mbed_official 130:1dec54e4aec3 67 void pin_function(PinName pin, int data) {
mbed_official 130:1dec54e4aec3 68 if (pin == NC) return;
mbed_official 130:1dec54e4aec3 69
mbed_official 130:1dec54e4aec3 70 // Get the pin informations
mbed_official 130:1dec54e4aec3 71 uint32_t mode = STM_PIN_MODE(data);
mbed_official 130:1dec54e4aec3 72 uint32_t otype = STM_PIN_OTYPE(data);
mbed_official 130:1dec54e4aec3 73 uint32_t pupd = STM_PIN_PUPD(data);
mbed_official 130:1dec54e4aec3 74 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 130:1dec54e4aec3 75
mbed_official 130:1dec54e4aec3 76 uint32_t port_index = STM_PORT(pin);
mbed_official 130:1dec54e4aec3 77 uint32_t pin_index = STM_PIN(pin);
mbed_official 130:1dec54e4aec3 78
mbed_official 130:1dec54e4aec3 79 // Enable GPIO clock
mbed_official 130:1dec54e4aec3 80 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 130:1dec54e4aec3 81 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 130:1dec54e4aec3 82
mbed_official 130:1dec54e4aec3 83 // Configure Alternate Function
mbed_official 130:1dec54e4aec3 84 // Warning: Must be done before the GPIO is initialized
mbed_official 130:1dec54e4aec3 85 if (afnum != 0xFF) {
mbed_official 130:1dec54e4aec3 86 GPIO_PinAFConfig(gpio, (uint16_t)pin_index, afnum);
mbed_official 130:1dec54e4aec3 87 }
mbed_official 130:1dec54e4aec3 88
mbed_official 130:1dec54e4aec3 89 // Configure GPIO
mbed_official 130:1dec54e4aec3 90 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 130:1dec54e4aec3 91 GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index);
mbed_official 130:1dec54e4aec3 92 GPIO_InitStructure.GPIO_Mode = (GPIOMode_TypeDef)mode;
mbed_official 130:1dec54e4aec3 93 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;
mbed_official 130:1dec54e4aec3 94 GPIO_InitStructure.GPIO_OType = (GPIOOType_TypeDef)otype;
mbed_official 130:1dec54e4aec3 95 GPIO_InitStructure.GPIO_PuPd = (GPIOPuPd_TypeDef)pupd;
mbed_official 130:1dec54e4aec3 96 GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 130:1dec54e4aec3 97
mbed_official 130:1dec54e4aec3 98 // *** TODO ***
mbed_official 130:1dec54e4aec3 99 // Disconnect JTAG-DP + SW-DP signals.
mbed_official 130:1dec54e4aec3 100 // Warning: Need to reconnect under reset
mbed_official 130:1dec54e4aec3 101 //if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 130:1dec54e4aec3 102 //
mbed_official 130:1dec54e4aec3 103 //}
mbed_official 130:1dec54e4aec3 104 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
mbed_official 130:1dec54e4aec3 105 //
mbed_official 130:1dec54e4aec3 106 //}
mbed_official 130:1dec54e4aec3 107 }
mbed_official 130:1dec54e4aec3 108
mbed_official 130:1dec54e4aec3 109 /**
mbed_official 130:1dec54e4aec3 110 * Configure pin pull-up/pull-down
mbed_official 130:1dec54e4aec3 111 */
mbed_official 130:1dec54e4aec3 112 void pin_mode(PinName pin, PinMode mode) {
mbed_official 130:1dec54e4aec3 113 if (pin == NC) return;
mbed_official 130:1dec54e4aec3 114
mbed_official 130:1dec54e4aec3 115 uint32_t port_index = STM_PORT(pin);
mbed_official 130:1dec54e4aec3 116 uint32_t pin_index = STM_PIN(pin);
mbed_official 130:1dec54e4aec3 117
mbed_official 130:1dec54e4aec3 118 // Enable GPIO clock
mbed_official 130:1dec54e4aec3 119 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 130:1dec54e4aec3 120 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 130:1dec54e4aec3 121
mbed_official 130:1dec54e4aec3 122 // Configure pull-up/pull-down resistors
mbed_official 130:1dec54e4aec3 123 uint32_t pupd = (uint32_t)mode;
mbed_official 130:1dec54e4aec3 124 if (pupd > 2) pupd = 0; // Open-drain = No pull-up/No pull-down
mbed_official 130:1dec54e4aec3 125 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
mbed_official 130:1dec54e4aec3 126 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
mbed_official 130:1dec54e4aec3 127
mbed_official 130:1dec54e4aec3 128 }