Nick Zhou / mbed-src-ST-demo

mbed library sources change for ST sensors and ST BLE

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32F3XX/pinmap.c@155:8435094ec241, 2014-04-08 (annotated)

Committer:
mbed_official
Date:
Tue Apr 08 09:15:06 2014 +0100
Revision:
155:8435094ec241
Child:
227:7bd0639b8911
Synchronized with git revision d616c415fc62f490b915ff0ff39c8d24b2917c0f



Full URL: https://github.com/mbedmicro/mbed/commit/d616c415fc62f490b915ff0ff39c8d24b2917c0f/



[STM32F3XX] Initial port

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 155:8435094ec241 1 /* mbed Microcontroller Library
mbed_official 155:8435094ec241 2 *******************************************************************************
mbed_official 155:8435094ec241 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 155:8435094ec241 4 * All rights reserved.
mbed_official 155:8435094ec241 5 *
mbed_official 155:8435094ec241 6 * Redistribution and use in source and binary forms, with or without
mbed_official 155:8435094ec241 7 * modification, are permitted provided that the following conditions are met:
mbed_official 155:8435094ec241 8 *
mbed_official 155:8435094ec241 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 155:8435094ec241 10 * this list of conditions and the following disclaimer.
mbed_official 155:8435094ec241 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 155:8435094ec241 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 155:8435094ec241 13 * and/or other materials provided with the distribution.
mbed_official 155:8435094ec241 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 155:8435094ec241 15 * may be used to endorse or promote products derived from this software
mbed_official 155:8435094ec241 16 * without specific prior written permission.
mbed_official 155:8435094ec241 17 *
mbed_official 155:8435094ec241 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 155:8435094ec241 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 155:8435094ec241 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 155:8435094ec241 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 155:8435094ec241 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 155:8435094ec241 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 155:8435094ec241 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 155:8435094ec241 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 155:8435094ec241 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 155:8435094ec241 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 155:8435094ec241 28 *******************************************************************************
mbed_official 155:8435094ec241 29 */
mbed_official 155:8435094ec241 30 #include "pinmap.h"
mbed_official 155:8435094ec241 31 #include "PortNames.h"
mbed_official 155:8435094ec241 32 #include "error.h"
mbed_official 155:8435094ec241 33
mbed_official 155:8435094ec241 34 // Enable GPIO clock and return GPIO base address
mbed_official 155:8435094ec241 35 uint32_t Set_GPIO_Clock(uint32_t port_idx) {
mbed_official 155:8435094ec241 36 uint32_t gpio_add;
mbed_official 155:8435094ec241 37 switch (port_idx) {
mbed_official 155:8435094ec241 38 case PortA:
mbed_official 155:8435094ec241 39 gpio_add = GPIOA_BASE;
mbed_official 155:8435094ec241 40 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
mbed_official 155:8435094ec241 41 break;
mbed_official 155:8435094ec241 42 case PortB:
mbed_official 155:8435094ec241 43 gpio_add = GPIOB_BASE;
mbed_official 155:8435094ec241 44 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
mbed_official 155:8435094ec241 45 break;
mbed_official 155:8435094ec241 46 case PortC:
mbed_official 155:8435094ec241 47 gpio_add = GPIOC_BASE;
mbed_official 155:8435094ec241 48 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
mbed_official 155:8435094ec241 49 break;
mbed_official 155:8435094ec241 50 case PortD:
mbed_official 155:8435094ec241 51 gpio_add = GPIOD_BASE;
mbed_official 155:8435094ec241 52 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, ENABLE);
mbed_official 155:8435094ec241 53 break;
mbed_official 155:8435094ec241 54 case PortE:
mbed_official 155:8435094ec241 55 gpio_add = GPIOE_BASE;
mbed_official 155:8435094ec241 56 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOE, ENABLE);
mbed_official 155:8435094ec241 57 break;
mbed_official 155:8435094ec241 58 case PortF:
mbed_official 155:8435094ec241 59 gpio_add = GPIOF_BASE;
mbed_official 155:8435094ec241 60 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE);
mbed_official 155:8435094ec241 61 break;
mbed_official 155:8435094ec241 62 default:
mbed_official 155:8435094ec241 63 gpio_add = 0;
mbed_official 155:8435094ec241 64 error("Port number is not correct.");
mbed_official 155:8435094ec241 65 break;
mbed_official 155:8435094ec241 66 }
mbed_official 155:8435094ec241 67 return gpio_add;
mbed_official 155:8435094ec241 68 }
mbed_official 155:8435094ec241 69
mbed_official 155:8435094ec241 70 /**
mbed_official 155:8435094ec241 71 * Configure pin (mode, speed, output type and pull-up/pull-down)
mbed_official 155:8435094ec241 72 */
mbed_official 155:8435094ec241 73 void pin_function(PinName pin, int data) {
mbed_official 155:8435094ec241 74 if (pin == NC) return;
mbed_official 155:8435094ec241 75
mbed_official 155:8435094ec241 76 // Get the pin informations
mbed_official 155:8435094ec241 77 uint32_t mode = STM_PIN_MODE(data);
mbed_official 155:8435094ec241 78 uint32_t otype = STM_PIN_OTYPE(data);
mbed_official 155:8435094ec241 79 uint32_t pupd = STM_PIN_PUPD(data);
mbed_official 155:8435094ec241 80 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 155:8435094ec241 81
mbed_official 155:8435094ec241 82 uint32_t port_index = STM_PORT(pin);
mbed_official 155:8435094ec241 83 uint32_t pin_index = STM_PIN(pin);
mbed_official 155:8435094ec241 84
mbed_official 155:8435094ec241 85 // Enable GPIO clock
mbed_official 155:8435094ec241 86 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 155:8435094ec241 87 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 155:8435094ec241 88
mbed_official 155:8435094ec241 89 // Configure Alternate Function
mbed_official 155:8435094ec241 90 // Warning: Must be done before the GPIO is initialized
mbed_official 155:8435094ec241 91 if (afnum != 0xFF) {
mbed_official 155:8435094ec241 92 GPIO_PinAFConfig(gpio, (uint16_t)pin_index, afnum);
mbed_official 155:8435094ec241 93 }
mbed_official 155:8435094ec241 94
mbed_official 155:8435094ec241 95 // Configure GPIO
mbed_official 155:8435094ec241 96 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 155:8435094ec241 97 GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index);
mbed_official 155:8435094ec241 98 GPIO_InitStructure.GPIO_Mode = (GPIOMode_TypeDef)mode;
mbed_official 155:8435094ec241 99 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;
mbed_official 155:8435094ec241 100 GPIO_InitStructure.GPIO_OType = (GPIOOType_TypeDef)otype;
mbed_official 155:8435094ec241 101 GPIO_InitStructure.GPIO_PuPd = (GPIOPuPd_TypeDef)pupd;
mbed_official 155:8435094ec241 102 GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 155:8435094ec241 103
mbed_official 155:8435094ec241 104 // [TODO] Disconnect JTAG-DP + SW-DP signals.
mbed_official 155:8435094ec241 105 // Warning: Need to reconnect under reset
mbed_official 155:8435094ec241 106 //if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 155:8435094ec241 107 //
mbed_official 155:8435094ec241 108 //}
mbed_official 155:8435094ec241 109 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
mbed_official 155:8435094ec241 110 //
mbed_official 155:8435094ec241 111 //}
mbed_official 155:8435094ec241 112 }
mbed_official 155:8435094ec241 113
mbed_official 155:8435094ec241 114 /**
mbed_official 155:8435094ec241 115 * Configure pin pull-up/pull-down
mbed_official 155:8435094ec241 116 */
mbed_official 155:8435094ec241 117 void pin_mode(PinName pin, PinMode mode) {
mbed_official 155:8435094ec241 118 if (pin == NC) return;
mbed_official 155:8435094ec241 119
mbed_official 155:8435094ec241 120 uint32_t port_index = STM_PORT(pin);
mbed_official 155:8435094ec241 121 uint32_t pin_index = STM_PIN(pin);
mbed_official 155:8435094ec241 122
mbed_official 155:8435094ec241 123 // Enable GPIO clock
mbed_official 155:8435094ec241 124 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 155:8435094ec241 125 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 155:8435094ec241 126
mbed_official 155:8435094ec241 127 // Configure pull-up/pull-down resistors
mbed_official 155:8435094ec241 128 uint32_t pupd = (uint32_t)mode;
mbed_official 155:8435094ec241 129 if (pupd > 2) pupd = 0; // Open-drain = No pull-up/No pull-down
mbed_official 155:8435094ec241 130 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
mbed_official 155:8435094ec241 131 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
mbed_official 155:8435094ec241 132
mbed_official 155:8435094ec241 133 }