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This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

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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@84:f54042cbc282, 2014-02-03 (annotated)

Committer:
mbed_official
Date:
Mon Feb 03 09:30:05 2014 +0000
Revision:
84:f54042cbc282
Parent:
80:66393a7b209d
Child:
145:cfacfb0a9e19
Synchronized with git revision bbbd8699601c42149ccf0c37bc42bb6856ccc4c6



Full URL: https://github.com/mbedmicro/mbed/commit/bbbd8699601c42149ccf0c37bc42bb6856ccc4c6/



[NUCLEO_L152RE/F030_R8] SPI, I2C, Ticker, PWM updates

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 // Enable GPIO clock and return GPIO base address
mbed_official 76:aeb1df146756 47 uint32_t Set_GPIO_Clock(uint32_t port_idx) {
mbed_official 76:aeb1df146756 48 uint32_t gpio_add = 0;
mbed_official 76:aeb1df146756 49 switch (port_idx) {
mbed_official 76:aeb1df146756 50 case PortA:
mbed_official 76:aeb1df146756 51 gpio_add = GPIOA_BASE;
mbed_official 76:aeb1df146756 52 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
mbed_official 76:aeb1df146756 53 break;
mbed_official 76:aeb1df146756 54 case PortB:
mbed_official 76:aeb1df146756 55 gpio_add = GPIOB_BASE;
mbed_official 76:aeb1df146756 56 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
mbed_official 76:aeb1df146756 57 break;
mbed_official 76:aeb1df146756 58 case PortC:
mbed_official 76:aeb1df146756 59 gpio_add = GPIOC_BASE;
mbed_official 76:aeb1df146756 60 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
mbed_official 76:aeb1df146756 61 break;
mbed_official 76:aeb1df146756 62 case PortD:
mbed_official 76:aeb1df146756 63 gpio_add = GPIOD_BASE;
mbed_official 76:aeb1df146756 64 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);
mbed_official 76:aeb1df146756 65 break;
mbed_official 76:aeb1df146756 66 default:
mbed_official 76:aeb1df146756 67 error("Port number is not correct.");
mbed_official 76:aeb1df146756 68 break;
mbed_official 76:aeb1df146756 69 }
mbed_official 76:aeb1df146756 70 return gpio_add;
mbed_official 76:aeb1df146756 71 }
mbed_official 76:aeb1df146756 72
mbed_official 52:a51c77007319 73 /**
mbed_official 76:aeb1df146756 74 * Configure pin (input, output, alternate function or analog) + output speed + AF
mbed_official 52:a51c77007319 75 */
mbed_official 52:a51c77007319 76 void pin_function(PinName pin, int data) {
mbed_official 52:a51c77007319 77 if (pin == NC) return;
mbed_official 52:a51c77007319 78
mbed_official 76:aeb1df146756 79 // Get the pin informations
mbed_official 52:a51c77007319 80 uint32_t mode = STM_PIN_MODE(data);
mbed_official 52:a51c77007319 81 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 52:a51c77007319 82
mbed_official 76:aeb1df146756 83 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 84 uint32_t pin_index = STM_PIN(pin);
mbed_official 52:a51c77007319 85
mbed_official 76:aeb1df146756 86 // Enable GPIO clock
mbed_official 76:aeb1df146756 87 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 84:f54042cbc282 88 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 80:66393a7b209d 89
mbed_official 76:aeb1df146756 90 // Enable AFIO clock
mbed_official 52:a51c77007319 91 RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
mbed_official 80:66393a7b209d 92
mbed_official 80:66393a7b209d 93 // Configure Alternate Function
mbed_official 80:66393a7b209d 94 // Warning: Must be done before the GPIO is initialized
mbed_official 80:66393a7b209d 95 if (afnum > 0) {
mbed_official 80:66393a7b209d 96 GPIO_PinRemapConfig(AF_mapping[afnum], ENABLE);
mbed_official 80:66393a7b209d 97 }
mbed_official 52:a51c77007319 98
mbed_official 52:a51c77007319 99 // Configure GPIO
mbed_official 84:f54042cbc282 100 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 52:a51c77007319 101 GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index);
mbed_official 52:a51c77007319 102 GPIO_InitStructure.GPIO_Mode = (GPIOMode_TypeDef)mode;
mbed_official 52:a51c77007319 103 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
mbed_official 52:a51c77007319 104 GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 52:a51c77007319 105
mbed_official 52:a51c77007319 106 // Disconnect JTAG-DP + SW-DP signals.
mbed_official 52:a51c77007319 107 // Warning: Need to reconnect under reset
mbed_official 52:a51c77007319 108 if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 52:a51c77007319 109 GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable, ENABLE);
mbed_official 52:a51c77007319 110 }
mbed_official 52:a51c77007319 111 if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
mbed_official 52:a51c77007319 112 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);
mbed_official 52:a51c77007319 113 }
mbed_official 52:a51c77007319 114 }
mbed_official 52:a51c77007319 115
mbed_official 52:a51c77007319 116 /**
mbed_official 76:aeb1df146756 117 * Configure pin pull-up/pull-down
mbed_official 52:a51c77007319 118 */
mbed_official 52:a51c77007319 119 void pin_mode(PinName pin, PinMode mode) {
mbed_official 76:aeb1df146756 120 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 84:f54042cbc282 121
mbed_official 52:a51c77007319 122 if (pin == NC) return;
mbed_official 52:a51c77007319 123
mbed_official 76:aeb1df146756 124 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 125 uint32_t pin_index = STM_PIN(pin);
mbed_official 52:a51c77007319 126
mbed_official 52:a51c77007319 127 // Enable GPIO clock
mbed_official 76:aeb1df146756 128 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 84:f54042cbc282 129 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 52:a51c77007319 130
mbed_official 52:a51c77007319 131 // Configure open-drain and pull-up/down
mbed_official 52:a51c77007319 132 switch (mode) {
mbed_official 52:a51c77007319 133 case PullNone:
mbed_official 52:a51c77007319 134 return;
mbed_official 52:a51c77007319 135 case PullUp:
mbed_official 52:a51c77007319 136 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
mbed_official 52:a51c77007319 137 break;
mbed_official 52:a51c77007319 138 case PullDown:
mbed_official 52:a51c77007319 139 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
mbed_official 52:a51c77007319 140 break;
mbed_official 52:a51c77007319 141 case OpenDrain:
mbed_official 52:a51c77007319 142 if (pin_index < 8) {
mbed_official 52:a51c77007319 143 if ((gpio->CRL & (0x03 << (pin_index * 4))) > 0) { // MODE bits = Output mode
mbed_official 52:a51c77007319 144 gpio->CRL |= (0x04 << (pin_index * 4)); // Set open-drain
mbed_official 52:a51c77007319 145 }
mbed_official 52:a51c77007319 146 }
mbed_official 52:a51c77007319 147 else {
mbed_official 52:a51c77007319 148 if ((gpio->CRH & (0x03 << ((pin_index % 8) * 4))) > 0) { // MODE bits = Output mode
mbed_official 52:a51c77007319 149 gpio->CRH |= (0x04 << ((pin_index % 8) * 4)); // Set open-drain
mbed_official 52:a51c77007319 150 }
mbed_official 52:a51c77007319 151 }
mbed_official 52:a51c77007319 152 return;
mbed_official 52:a51c77007319 153 default:
mbed_official 52:a51c77007319 154 break;
mbed_official 52:a51c77007319 155 }
mbed_official 52:a51c77007319 156
mbed_official 52:a51c77007319 157 // Configure GPIO
mbed_official 52:a51c77007319 158 GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index);
mbed_official 52:a51c77007319 159 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
mbed_official 52:a51c77007319 160 GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 52:a51c77007319 161 }