Ken Todotani / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/pinmap.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 52:a51c77007319 1 /* mbed Microcontroller Library
mbed_official 70:c1fbde68b492 2 *******************************************************************************
mbed_official 70:c1fbde68b492 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 70:c1fbde68b492 4 * All rights reserved.
mbed_official 52:a51c77007319 5 *
mbed_official 70:c1fbde68b492 6 * Redistribution and use in source and binary forms, with or without
mbed_official 70:c1fbde68b492 7 * modification, are permitted provided that the following conditions are met:
mbed_official 52:a51c77007319 8 *
mbed_official 70:c1fbde68b492 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 70:c1fbde68b492 10 * this list of conditions and the following disclaimer.
mbed_official 70:c1fbde68b492 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 70:c1fbde68b492 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 70:c1fbde68b492 13 * and/or other materials provided with the distribution.
mbed_official 70:c1fbde68b492 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 70:c1fbde68b492 15 * may be used to endorse or promote products derived from this software
mbed_official 70:c1fbde68b492 16 * without specific prior written permission.
mbed_official 52:a51c77007319 17 *
mbed_official 70:c1fbde68b492 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 70:c1fbde68b492 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 70:c1fbde68b492 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 70:c1fbde68b492 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 70:c1fbde68b492 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 70:c1fbde68b492 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 70:c1fbde68b492 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 70:c1fbde68b492 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 70:c1fbde68b492 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 70:c1fbde68b492 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 70:c1fbde68b492 28 *******************************************************************************
mbed_official 52:a51c77007319 29 */
mbed_official 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 52:a51c77007319 31 #include "pinmap.h"
mbed_official 145:cfacfb0a9e19 32 #include "PortNames.h"
mbed_official 250:a49055e7a707 33 #include "mbed_error.h"
mbed_official 52:a51c77007319 34
mbed_official 52:a51c77007319 35 // Alternate-function mapping
mbed_official 167:d5744491c362 36 #define AF_NUM (10)
mbed_official 167:d5744491c362 37 static const uint32_t AF_mapping[AF_NUM] = {
mbed_official 174:8bb9f3a33240 38 0, // 0 = No AF
mbed_official 174:8bb9f3a33240 39 GPIO_Remap_SPI1, // 1
mbed_official 174:8bb9f3a33240 40 GPIO_Remap_I2C1, // 2
mbed_official 174:8bb9f3a33240 41 GPIO_Remap_USART1, // 3
mbed_official 174:8bb9f3a33240 42 GPIO_Remap_USART2, // 4
mbed_official 174:8bb9f3a33240 43 GPIO_PartialRemap_USART3, // 5
mbed_official 174:8bb9f3a33240 44 GPIO_PartialRemap_TIM1, // 6
mbed_official 174:8bb9f3a33240 45 GPIO_PartialRemap_TIM3, // 7
mbed_official 174:8bb9f3a33240 46 GPIO_FullRemap_TIM2, // 8
mbed_official 174:8bb9f3a33240 47 GPIO_FullRemap_TIM3 // 9
mbed_official 52:a51c77007319 48 };
mbed_official 52:a51c77007319 49
mbed_official 76:aeb1df146756 50 // Enable GPIO clock and return GPIO base address
mbed_official 76:aeb1df146756 51 uint32_t Set_GPIO_Clock(uint32_t port_idx) {
mbed_official 76:aeb1df146756 52 uint32_t gpio_add = 0;
mbed_official 76:aeb1df146756 53 switch (port_idx) {
mbed_official 76:aeb1df146756 54 case PortA:
mbed_official 76:aeb1df146756 55 gpio_add = GPIOA_BASE;
mbed_official 76:aeb1df146756 56 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
mbed_official 76:aeb1df146756 57 break;
mbed_official 76:aeb1df146756 58 case PortB:
mbed_official 76:aeb1df146756 59 gpio_add = GPIOB_BASE;
mbed_official 76:aeb1df146756 60 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
mbed_official 76:aeb1df146756 61 break;
mbed_official 76:aeb1df146756 62 case PortC:
mbed_official 76:aeb1df146756 63 gpio_add = GPIOC_BASE;
mbed_official 76:aeb1df146756 64 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
mbed_official 76:aeb1df146756 65 break;
mbed_official 76:aeb1df146756 66 case PortD:
mbed_official 76:aeb1df146756 67 gpio_add = GPIOD_BASE;
mbed_official 76:aeb1df146756 68 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);
mbed_official 76:aeb1df146756 69 break;
mbed_official 76:aeb1df146756 70 default:
mbed_official 76:aeb1df146756 71 error("Port number is not correct.");
mbed_official 76:aeb1df146756 72 break;
mbed_official 76:aeb1df146756 73 }
mbed_official 76:aeb1df146756 74 return gpio_add;
mbed_official 76:aeb1df146756 75 }
mbed_official 76:aeb1df146756 76
mbed_official 52:a51c77007319 77 /**
mbed_official 76:aeb1df146756 78 * Configure pin (input, output, alternate function or analog) + output speed + AF
mbed_official 52:a51c77007319 79 */
mbed_official 52:a51c77007319 80 void pin_function(PinName pin, int data) {
mbed_official 227:7bd0639b8911 81 MBED_ASSERT(pin != (PinName)NC);
mbed_official 76:aeb1df146756 82 // Get the pin informations
mbed_official 52:a51c77007319 83 uint32_t mode = STM_PIN_MODE(data);
mbed_official 52:a51c77007319 84 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 52:a51c77007319 85
mbed_official 76:aeb1df146756 86 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 87 uint32_t pin_index = STM_PIN(pin);
mbed_official 52:a51c77007319 88
mbed_official 76:aeb1df146756 89 // Enable GPIO clock
mbed_official 76:aeb1df146756 90 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 84:f54042cbc282 91 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 80:66393a7b209d 92
mbed_official 76:aeb1df146756 93 // Enable AFIO clock
mbed_official 52:a51c77007319 94 RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
mbed_official 80:66393a7b209d 95
mbed_official 80:66393a7b209d 96 // Configure Alternate Function
mbed_official 80:66393a7b209d 97 // Warning: Must be done before the GPIO is initialized
mbed_official 167:d5744491c362 98 if ((afnum > 0) && (afnum < AF_NUM)) {
mbed_official 80:66393a7b209d 99 GPIO_PinRemapConfig(AF_mapping[afnum], ENABLE);
mbed_official 80:66393a7b209d 100 }
mbed_official 174:8bb9f3a33240 101
mbed_official 52:a51c77007319 102 // Configure GPIO
mbed_official 84:f54042cbc282 103 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 52:a51c77007319 104 GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index);
mbed_official 52:a51c77007319 105 GPIO_InitStructure.GPIO_Mode = (GPIOMode_TypeDef)mode;
mbed_official 52:a51c77007319 106 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
mbed_official 52:a51c77007319 107 GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 174:8bb9f3a33240 108
mbed_official 52:a51c77007319 109 // Disconnect JTAG-DP + SW-DP signals.
mbed_official 52:a51c77007319 110 // Warning: Need to reconnect under reset
mbed_official 52:a51c77007319 111 if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 52:a51c77007319 112 GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable, ENABLE);
mbed_official 52:a51c77007319 113 }
mbed_official 52:a51c77007319 114 if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
mbed_official 52:a51c77007319 115 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);
mbed_official 174:8bb9f3a33240 116 }
mbed_official 52:a51c77007319 117 }
mbed_official 52:a51c77007319 118
mbed_official 52:a51c77007319 119 /**
mbed_official 76:aeb1df146756 120 * Configure pin pull-up/pull-down
mbed_official 52:a51c77007319 121 */
mbed_official 52:a51c77007319 122 void pin_mode(PinName pin, PinMode mode) {
mbed_official 227:7bd0639b8911 123 MBED_ASSERT(pin != (PinName)NC);
mbed_official 76:aeb1df146756 124 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 174:8bb9f3a33240 125
mbed_official 76:aeb1df146756 126 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 127 uint32_t pin_index = STM_PIN(pin);
mbed_official 52:a51c77007319 128
mbed_official 52:a51c77007319 129 // Enable GPIO clock
mbed_official 76:aeb1df146756 130 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 84:f54042cbc282 131 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 174:8bb9f3a33240 132
mbed_official 52:a51c77007319 133 // Configure open-drain and pull-up/down
mbed_official 52:a51c77007319 134 switch (mode) {
mbed_official 174:8bb9f3a33240 135 case PullNone:
mbed_official 174:8bb9f3a33240 136 return;
mbed_official 174:8bb9f3a33240 137 case PullUp:
mbed_official 174:8bb9f3a33240 138 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
mbed_official 174:8bb9f3a33240 139 break;
mbed_official 174:8bb9f3a33240 140 case PullDown:
mbed_official 174:8bb9f3a33240 141 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
mbed_official 174:8bb9f3a33240 142 break;
mbed_official 174:8bb9f3a33240 143 case OpenDrain:
mbed_official 174:8bb9f3a33240 144 if (pin_index < 8) {
mbed_official 174:8bb9f3a33240 145 if ((gpio->CRL & (0x03 << (pin_index * 4))) > 0) { // MODE bits = Output mode
mbed_official 174:8bb9f3a33240 146 gpio->CRL |= (0x04 << (pin_index * 4)); // Set open-drain
mbed_official 174:8bb9f3a33240 147 }
mbed_official 174:8bb9f3a33240 148 } else {
mbed_official 174:8bb9f3a33240 149 if ((gpio->CRH & (0x03 << ((pin_index % 8) * 4))) > 0) { // MODE bits = Output mode
mbed_official 174:8bb9f3a33240 150 gpio->CRH |= (0x04 << ((pin_index % 8) * 4)); // Set open-drain
mbed_official 174:8bb9f3a33240 151 }
mbed_official 52:a51c77007319 152 }
mbed_official 174:8bb9f3a33240 153 return;
mbed_official 174:8bb9f3a33240 154 default:
mbed_official 174:8bb9f3a33240 155 break;
mbed_official 52:a51c77007319 156 }
mbed_official 174:8bb9f3a33240 157
mbed_official 52:a51c77007319 158 // Configure GPIO
mbed_official 52:a51c77007319 159 GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index);
mbed_official 52:a51c77007319 160 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
mbed_official 174:8bb9f3a33240 161 GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 52:a51c77007319 162 }