shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src 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 }