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This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

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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@145:cfacfb0a9e19, 2014-04-02 (annotated)

Committer:
mbed_official
Date:
Wed Apr 02 18:15:07 2014 +0100
Revision:
145:cfacfb0a9e19
Parent:
84:f54042cbc282
Child:
167:d5744491c362
Synchronized with git revision be141acdd0e267a59bebff374b43f8011a2c5880



Full URL: https://github.com/mbedmicro/mbed/commit/be141acdd0e267a59bebff374b43f8011a2c5880/



[NUCLEO_xxx] Various bugs correction

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 145:cfacfb0a9e19 31 #include "PortNames.h"
mbed_official 52:a51c77007319 32 #include "error.h"
mbed_official 52:a51c77007319 33
mbed_official 52:a51c77007319 34 // Alternate-function mapping
mbed_official 52:a51c77007319 35 static const uint32_t AF_mapping[] = {
mbed_official 58:3b55b7a41411 36 0, // 0 = No AF
mbed_official 58:3b55b7a41411 37 GPIO_Remap_SPI1, // 1
mbed_official 58:3b55b7a41411 38 GPIO_Remap_I2C1, // 2
mbed_official 58:3b55b7a41411 39 GPIO_Remap_USART1, // 3
mbed_official 58:3b55b7a41411 40 GPIO_Remap_USART2, // 4
mbed_official 58:3b55b7a41411 41 GPIO_FullRemap_TIM2, // 5
mbed_official 58:3b55b7a41411 42 GPIO_FullRemap_TIM3, // 6
mbed_official 58:3b55b7a41411 43 GPIO_PartialRemap_TIM3, // 7
mbed_official 58:3b55b7a41411 44 GPIO_Remap_I2C1 // 8
mbed_official 52:a51c77007319 45 };
mbed_official 52:a51c77007319 46
mbed_official 76:aeb1df146756 47 // Enable GPIO clock and return GPIO base address
mbed_official 76:aeb1df146756 48 uint32_t Set_GPIO_Clock(uint32_t port_idx) {
mbed_official 76:aeb1df146756 49 uint32_t gpio_add = 0;
mbed_official 76:aeb1df146756 50 switch (port_idx) {
mbed_official 76:aeb1df146756 51 case PortA:
mbed_official 76:aeb1df146756 52 gpio_add = GPIOA_BASE;
mbed_official 76:aeb1df146756 53 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
mbed_official 76:aeb1df146756 54 break;
mbed_official 76:aeb1df146756 55 case PortB:
mbed_official 76:aeb1df146756 56 gpio_add = GPIOB_BASE;
mbed_official 76:aeb1df146756 57 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
mbed_official 76:aeb1df146756 58 break;
mbed_official 76:aeb1df146756 59 case PortC:
mbed_official 76:aeb1df146756 60 gpio_add = GPIOC_BASE;
mbed_official 76:aeb1df146756 61 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
mbed_official 76:aeb1df146756 62 break;
mbed_official 76:aeb1df146756 63 case PortD:
mbed_official 76:aeb1df146756 64 gpio_add = GPIOD_BASE;
mbed_official 76:aeb1df146756 65 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);
mbed_official 76:aeb1df146756 66 break;
mbed_official 76:aeb1df146756 67 default:
mbed_official 76:aeb1df146756 68 error("Port number is not correct.");
mbed_official 76:aeb1df146756 69 break;
mbed_official 76:aeb1df146756 70 }
mbed_official 76:aeb1df146756 71 return gpio_add;
mbed_official 76:aeb1df146756 72 }
mbed_official 76:aeb1df146756 73
mbed_official 52:a51c77007319 74 /**
mbed_official 76:aeb1df146756 75 * Configure pin (input, output, alternate function or analog) + output speed + AF
mbed_official 52:a51c77007319 76 */
mbed_official 52:a51c77007319 77 void pin_function(PinName pin, int data) {
mbed_official 52:a51c77007319 78 if (pin == NC) return;
mbed_official 52:a51c77007319 79
mbed_official 76:aeb1df146756 80 // Get the pin informations
mbed_official 52:a51c77007319 81 uint32_t mode = STM_PIN_MODE(data);
mbed_official 52:a51c77007319 82 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 52:a51c77007319 83
mbed_official 76:aeb1df146756 84 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 85 uint32_t pin_index = STM_PIN(pin);
mbed_official 52:a51c77007319 86
mbed_official 76:aeb1df146756 87 // Enable GPIO clock
mbed_official 76:aeb1df146756 88 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 84:f54042cbc282 89 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 80:66393a7b209d 90
mbed_official 76:aeb1df146756 91 // Enable AFIO clock
mbed_official 52:a51c77007319 92 RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
mbed_official 80:66393a7b209d 93
mbed_official 80:66393a7b209d 94 // Configure Alternate Function
mbed_official 80:66393a7b209d 95 // Warning: Must be done before the GPIO is initialized
mbed_official 80:66393a7b209d 96 if (afnum > 0) {
mbed_official 80:66393a7b209d 97 GPIO_PinRemapConfig(AF_mapping[afnum], ENABLE);
mbed_official 80:66393a7b209d 98 }
mbed_official 52:a51c77007319 99
mbed_official 52:a51c77007319 100 // Configure GPIO
mbed_official 84:f54042cbc282 101 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 52:a51c77007319 102 GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index);
mbed_official 52:a51c77007319 103 GPIO_InitStructure.GPIO_Mode = (GPIOMode_TypeDef)mode;
mbed_official 52:a51c77007319 104 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
mbed_official 52:a51c77007319 105 GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 52:a51c77007319 106
mbed_official 52:a51c77007319 107 // Disconnect JTAG-DP + SW-DP signals.
mbed_official 52:a51c77007319 108 // Warning: Need to reconnect under reset
mbed_official 52:a51c77007319 109 if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 52:a51c77007319 110 GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable, ENABLE);
mbed_official 52:a51c77007319 111 }
mbed_official 52:a51c77007319 112 if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
mbed_official 52:a51c77007319 113 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);
mbed_official 52:a51c77007319 114 }
mbed_official 52:a51c77007319 115 }
mbed_official 52:a51c77007319 116
mbed_official 52:a51c77007319 117 /**
mbed_official 76:aeb1df146756 118 * Configure pin pull-up/pull-down
mbed_official 52:a51c77007319 119 */
mbed_official 52:a51c77007319 120 void pin_mode(PinName pin, PinMode mode) {
mbed_official 76:aeb1df146756 121 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 84:f54042cbc282 122
mbed_official 52:a51c77007319 123 if (pin == NC) return;
mbed_official 52:a51c77007319 124
mbed_official 76:aeb1df146756 125 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 126 uint32_t pin_index = STM_PIN(pin);
mbed_official 52:a51c77007319 127
mbed_official 52:a51c77007319 128 // Enable GPIO clock
mbed_official 76:aeb1df146756 129 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 84:f54042cbc282 130 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 52:a51c77007319 131
mbed_official 52:a51c77007319 132 // Configure open-drain and pull-up/down
mbed_official 52:a51c77007319 133 switch (mode) {
mbed_official 52:a51c77007319 134 case PullNone:
mbed_official 52:a51c77007319 135 return;
mbed_official 52:a51c77007319 136 case PullUp:
mbed_official 52:a51c77007319 137 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
mbed_official 52:a51c77007319 138 break;
mbed_official 52:a51c77007319 139 case PullDown:
mbed_official 52:a51c77007319 140 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
mbed_official 52:a51c77007319 141 break;
mbed_official 52:a51c77007319 142 case OpenDrain:
mbed_official 52:a51c77007319 143 if (pin_index < 8) {
mbed_official 52:a51c77007319 144 if ((gpio->CRL & (0x03 << (pin_index * 4))) > 0) { // MODE bits = Output mode
mbed_official 52:a51c77007319 145 gpio->CRL |= (0x04 << (pin_index * 4)); // Set open-drain
mbed_official 52:a51c77007319 146 }
mbed_official 52:a51c77007319 147 }
mbed_official 52:a51c77007319 148 else {
mbed_official 52:a51c77007319 149 if ((gpio->CRH & (0x03 << ((pin_index % 8) * 4))) > 0) { // MODE bits = Output mode
mbed_official 52:a51c77007319 150 gpio->CRH |= (0x04 << ((pin_index % 8) * 4)); // Set open-drain
mbed_official 52:a51c77007319 151 }
mbed_official 52:a51c77007319 152 }
mbed_official 52:a51c77007319 153 return;
mbed_official 52:a51c77007319 154 default:
mbed_official 52:a51c77007319 155 break;
mbed_official 52:a51c77007319 156 }
mbed_official 52:a51c77007319 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 52:a51c77007319 161 GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 52:a51c77007319 162 }