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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@80:66393a7b209d, 2014-01-30 (annotated)

Committer:
mbed_official
Date:
Thu Jan 30 12:15:05 2014 +0000
Revision:
80:66393a7b209d
Parent:
76:aeb1df146756
Child:
84:f54042cbc282
Synchronized with git revision dba523f83fe09b7fce11fc1299dd1216e9776359



Full URL: https://github.com/mbedmicro/mbed/commit/dba523f83fe09b7fce11fc1299dd1216e9776359/



Update of I2C, SPI, SLEEP for NUCLEO_F103RB and L152RE

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 76:aeb1df146756 46 // Not an API function
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 76:aeb1df146756 78 GPIO_TypeDef *gpio;
mbed_official 76:aeb1df146756 79 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 76:aeb1df146756 80
mbed_official 52:a51c77007319 81 if (pin == NC) return;
mbed_official 52:a51c77007319 82
mbed_official 76:aeb1df146756 83 // Get the pin informations
mbed_official 52:a51c77007319 84 uint32_t mode = STM_PIN_MODE(data);
mbed_official 52:a51c77007319 85 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 52:a51c77007319 86
mbed_official 76:aeb1df146756 87 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 88 uint32_t pin_index = STM_PIN(pin);
mbed_official 52:a51c77007319 89
mbed_official 76:aeb1df146756 90 // Enable GPIO clock
mbed_official 76:aeb1df146756 91 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 76:aeb1df146756 92 gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 80:66393a7b209d 93
mbed_official 76:aeb1df146756 94 // Enable AFIO clock
mbed_official 52:a51c77007319 95 RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
mbed_official 80:66393a7b209d 96
mbed_official 80:66393a7b209d 97 // Configure Alternate Function
mbed_official 80:66393a7b209d 98 // Warning: Must be done before the GPIO is initialized
mbed_official 80:66393a7b209d 99 if (afnum > 0) {
mbed_official 80:66393a7b209d 100 GPIO_PinRemapConfig(AF_mapping[afnum], ENABLE);
mbed_official 80:66393a7b209d 101 }
mbed_official 52:a51c77007319 102
mbed_official 52:a51c77007319 103 // Configure GPIO
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 52:a51c77007319 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 52:a51c77007319 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 76:aeb1df146756 123 GPIO_TypeDef *gpio;
mbed_official 76:aeb1df146756 124 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 76:aeb1df146756 125
mbed_official 52:a51c77007319 126 if (pin == NC) return;
mbed_official 52:a51c77007319 127
mbed_official 76:aeb1df146756 128 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 129 uint32_t pin_index = STM_PIN(pin);
mbed_official 52:a51c77007319 130
mbed_official 52:a51c77007319 131 // Enable GPIO clock
mbed_official 76:aeb1df146756 132 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 76:aeb1df146756 133 gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 52:a51c77007319 134
mbed_official 52:a51c77007319 135 // Configure open-drain and pull-up/down
mbed_official 52:a51c77007319 136 switch (mode) {
mbed_official 52:a51c77007319 137 case PullNone:
mbed_official 52:a51c77007319 138 return;
mbed_official 52:a51c77007319 139 case PullUp:
mbed_official 52:a51c77007319 140 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
mbed_official 52:a51c77007319 141 break;
mbed_official 52:a51c77007319 142 case PullDown:
mbed_official 52:a51c77007319 143 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
mbed_official 52:a51c77007319 144 break;
mbed_official 52:a51c77007319 145 case OpenDrain:
mbed_official 52:a51c77007319 146 if (pin_index < 8) {
mbed_official 52:a51c77007319 147 if ((gpio->CRL & (0x03 << (pin_index * 4))) > 0) { // MODE bits = Output mode
mbed_official 52:a51c77007319 148 gpio->CRL |= (0x04 << (pin_index * 4)); // Set open-drain
mbed_official 52:a51c77007319 149 }
mbed_official 52:a51c77007319 150 }
mbed_official 52:a51c77007319 151 else {
mbed_official 52:a51c77007319 152 if ((gpio->CRH & (0x03 << ((pin_index % 8) * 4))) > 0) { // MODE bits = Output mode
mbed_official 52:a51c77007319 153 gpio->CRH |= (0x04 << ((pin_index % 8) * 4)); // Set open-drain
mbed_official 52:a51c77007319 154 }
mbed_official 52:a51c77007319 155 }
mbed_official 52:a51c77007319 156 return;
mbed_official 52:a51c77007319 157 default:
mbed_official 52:a51c77007319 158 break;
mbed_official 52:a51c77007319 159 }
mbed_official 52:a51c77007319 160
mbed_official 52:a51c77007319 161 // Configure GPIO
mbed_official 52:a51c77007319 162 GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index);
mbed_official 52:a51c77007319 163 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
mbed_official 52:a51c77007319 164 GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 52:a51c77007319 165 }