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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/pinmap.c@285:31249416b6f9, 2014-08-15 (annotated)

Committer:
mbed_official
Date:
Fri Aug 15 16:30:08 2014 +0100
Revision:
285:31249416b6f9
Parent:
251:de9a1e4ffd79
Child:
402:09075a3b15e3
Synchronized with git revision 601712595f49bbd2a2771c52cf3e84c9c7a591af



Full URL: https://github.com/mbedmicro/mbed/commit/601712595f49bbd2a2771c52cf3e84c9c7a591af/

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 285:31249416b6f9 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 }