Toyomasa Watarai / mbed-src

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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 }