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Dependents:   mbed_blinky-bmd-200 bmd-200_accel_demo firstRig

Fork of mbed-src 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 }