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mbed SDK library sources

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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@70:c1fbde68b492, 2014-01-07 (annotated)

Committer:
mbed_official
Date:
Tue Jan 07 11:00:05 2014 +0000
Revision:
70:c1fbde68b492
Parent:
58:3b55b7a41411
Child:
76:aeb1df146756
Synchronized with git revision 3f438a307904431f2782db3c8fa49946b9fc1d85



Full URL: https://github.com/mbedmicro/mbed/commit/3f438a307904431f2782db3c8fa49946b9fc1d85/



[NUCLEO_F103RB] license text changed + sleep hal updated

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 52:a51c77007319 30 #include "pinmap.h"
mbed_official 52:a51c77007319 31 #include "error.h"
mbed_official 52:a51c77007319 32
mbed_official 52:a51c77007319 33 // Alternate-function mapping
mbed_official 52:a51c77007319 34 static const uint32_t AF_mapping[] = {
mbed_official 58:3b55b7a41411 35 0, // 0 = No AF
mbed_official 58:3b55b7a41411 36 GPIO_Remap_SPI1, // 1
mbed_official 58:3b55b7a41411 37 GPIO_Remap_I2C1, // 2
mbed_official 58:3b55b7a41411 38 GPIO_Remap_USART1, // 3
mbed_official 58:3b55b7a41411 39 GPIO_Remap_USART2, // 4
mbed_official 58:3b55b7a41411 40 GPIO_FullRemap_TIM2, // 5
mbed_official 58:3b55b7a41411 41 GPIO_FullRemap_TIM3, // 6
mbed_official 58:3b55b7a41411 42 GPIO_PartialRemap_TIM3, // 7
mbed_official 58:3b55b7a41411 43 GPIO_Remap_I2C1 // 8
mbed_official 52:a51c77007319 44 };
mbed_official 52:a51c77007319 45
mbed_official 52:a51c77007319 46 /**
mbed_official 52:a51c77007319 47 * Set the pin function (input, output, alternate function or analog) + output speed + AF
mbed_official 52:a51c77007319 48 */
mbed_official 52:a51c77007319 49 void pin_function(PinName pin, int data) {
mbed_official 52:a51c77007319 50 if (pin == NC) return;
mbed_official 52:a51c77007319 51
mbed_official 52:a51c77007319 52 // Get the pin mode and alternate-function number
mbed_official 52:a51c77007319 53 uint32_t mode = STM_PIN_MODE(data);
mbed_official 52:a51c77007319 54 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 52:a51c77007319 55
mbed_official 52:a51c77007319 56 // Get GPIO structure base address
mbed_official 52:a51c77007319 57 uint32_t pin_number = (uint32_t)pin;
mbed_official 52:a51c77007319 58 uint32_t pin_index = (pin_number & 0xF);
mbed_official 52:a51c77007319 59 uint32_t port_index = (pin_number >> 4);
mbed_official 52:a51c77007319 60 GPIO_TypeDef *gpio = ((GPIO_TypeDef *)(GPIOA_BASE + (port_index << 10)));
mbed_official 52:a51c77007319 61
mbed_official 52:a51c77007319 62 // Enable GPIO and AFIO clocks
mbed_official 52:a51c77007319 63 RCC_APB2PeriphClockCmd((uint32_t)(RCC_APB2Periph_GPIOA << port_index), ENABLE);
mbed_official 52:a51c77007319 64 RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
mbed_official 52:a51c77007319 65
mbed_official 52:a51c77007319 66 // Configure GPIO
mbed_official 52:a51c77007319 67 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 52:a51c77007319 68 GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index);
mbed_official 52:a51c77007319 69 GPIO_InitStructure.GPIO_Mode = (GPIOMode_TypeDef)mode;
mbed_official 52:a51c77007319 70 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
mbed_official 52:a51c77007319 71 GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 52:a51c77007319 72
mbed_official 52:a51c77007319 73 // Configure Alternate Function
mbed_official 52:a51c77007319 74 if (afnum > 0) {
mbed_official 52:a51c77007319 75 GPIO_PinRemapConfig(AF_mapping[afnum], ENABLE);
mbed_official 52:a51c77007319 76 }
mbed_official 52:a51c77007319 77
mbed_official 52:a51c77007319 78 // Disconnect JTAG-DP + SW-DP signals.
mbed_official 52:a51c77007319 79 // Warning: Need to reconnect under reset
mbed_official 52:a51c77007319 80 if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 52:a51c77007319 81 GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable, ENABLE);
mbed_official 52:a51c77007319 82 }
mbed_official 52:a51c77007319 83 if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
mbed_official 52:a51c77007319 84 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);
mbed_official 52:a51c77007319 85 }
mbed_official 52:a51c77007319 86 }
mbed_official 52:a51c77007319 87
mbed_official 52:a51c77007319 88 /**
mbed_official 52:a51c77007319 89 * Set the pin mode (open-drain/push-pull + pull-up/pull-down)
mbed_official 52:a51c77007319 90 */
mbed_official 52:a51c77007319 91 void pin_mode(PinName pin, PinMode mode) {
mbed_official 52:a51c77007319 92 if (pin == NC) return;
mbed_official 52:a51c77007319 93
mbed_official 52:a51c77007319 94 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 52:a51c77007319 95
mbed_official 52:a51c77007319 96 // Get GPIO structure base address
mbed_official 52:a51c77007319 97 uint32_t pin_number = (uint32_t)pin;
mbed_official 52:a51c77007319 98 uint32_t pin_index = (pin_number & 0xF);
mbed_official 52:a51c77007319 99 uint32_t port_index = (pin_number >> 4);
mbed_official 52:a51c77007319 100 GPIO_TypeDef *gpio = ((GPIO_TypeDef *)(GPIOA_BASE + (port_index << 10)));
mbed_official 52:a51c77007319 101
mbed_official 52:a51c77007319 102 // Enable GPIO clock
mbed_official 52:a51c77007319 103 RCC_APB2PeriphClockCmd((uint32_t)(RCC_APB2Periph_GPIOA << port_index), ENABLE);
mbed_official 52:a51c77007319 104
mbed_official 52:a51c77007319 105 // Configure open-drain and pull-up/down
mbed_official 52:a51c77007319 106 switch (mode) {
mbed_official 52:a51c77007319 107 case PullNone:
mbed_official 52:a51c77007319 108 return;
mbed_official 52:a51c77007319 109 case PullUp:
mbed_official 52:a51c77007319 110 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
mbed_official 52:a51c77007319 111 break;
mbed_official 52:a51c77007319 112 case PullDown:
mbed_official 52:a51c77007319 113 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
mbed_official 52:a51c77007319 114 break;
mbed_official 52:a51c77007319 115 case OpenDrain:
mbed_official 52:a51c77007319 116 if (pin_index < 8) {
mbed_official 52:a51c77007319 117 if ((gpio->CRL & (0x03 << (pin_index * 4))) > 0) { // MODE bits = Output mode
mbed_official 52:a51c77007319 118 gpio->CRL |= (0x04 << (pin_index * 4)); // Set open-drain
mbed_official 52:a51c77007319 119 }
mbed_official 52:a51c77007319 120 }
mbed_official 52:a51c77007319 121 else {
mbed_official 52:a51c77007319 122 if ((gpio->CRH & (0x03 << ((pin_index % 8) * 4))) > 0) { // MODE bits = Output mode
mbed_official 52:a51c77007319 123 gpio->CRH |= (0x04 << ((pin_index % 8) * 4)); // Set open-drain
mbed_official 52:a51c77007319 124 }
mbed_official 52:a51c77007319 125 }
mbed_official 52:a51c77007319 126 return;
mbed_official 52:a51c77007319 127 default:
mbed_official 52:a51c77007319 128 break;
mbed_official 52:a51c77007319 129 }
mbed_official 52:a51c77007319 130
mbed_official 52:a51c77007319 131 // Configure GPIO
mbed_official 52:a51c77007319 132 GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index);
mbed_official 52:a51c77007319 133 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
mbed_official 52:a51c77007319 134 GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 52:a51c77007319 135 }