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mbed library sources

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targets/hal/TARGET_STM/TARGET_STM32F1/pinmap.c@603:f00c7e78e8b4, 2015-08-09 (annotated)

Committer:
HiAlgoBoost
Date:
Sun Aug 09 05:18:54 2015 +0000
Revision:
603:f00c7e78e8b4
Parent:
537:c61a9ac6f5c2 
Evening of August 8th version

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 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 52:a51c77007319 31 #include "pinmap.h"
mbed_official 145:cfacfb0a9e19 32 #include "PortNames.h"
mbed_official 285:31249416b6f9 33 #include "mbed_error.h"
mbed_official 52:a51c77007319 34
mbed_official 489:119543c9f674 35 // GPIO mode look-up table
mbed_official 489:119543c9f674 36 // Warning: the elements order must be the same as the one defined in PinNames.h
mbed_official 489:119543c9f674 37 static const uint32_t gpio_mode[13] = {
mbed_official 489:119543c9f674 38 GPIO_MODE_INPUT, // 0 = STM_MODE_INPUT
mbed_official 489:119543c9f674 39 GPIO_MODE_OUTPUT_PP, // 1 = STM_MODE_OUTPUT_PP
mbed_official 489:119543c9f674 40 GPIO_MODE_OUTPUT_OD, // 2 = STM_MODE_OUTPUT_OD
mbed_official 489:119543c9f674 41 GPIO_MODE_AF_PP, // 3 = STM_MODE_AF_PP
mbed_official 489:119543c9f674 42 GPIO_MODE_AF_OD, // 4 = STM_MODE_AF_OD
mbed_official 489:119543c9f674 43 GPIO_MODE_ANALOG, // 5 = STM_MODE_ANALOG
mbed_official 489:119543c9f674 44 GPIO_MODE_IT_RISING, // 6 = STM_MODE_IT_RISING
mbed_official 489:119543c9f674 45 GPIO_MODE_IT_FALLING, // 7 = STM_MODE_IT_FALLING
mbed_official 489:119543c9f674 46 GPIO_MODE_IT_RISING_FALLING, // 8 = STM_MODE_IT_RISING_FALLING
mbed_official 489:119543c9f674 47 GPIO_MODE_EVT_RISING, // 9 = STM_MODE_EVT_RISING
mbed_official 489:119543c9f674 48 GPIO_MODE_EVT_FALLING, // 10 = STM_MODE_EVT_FALLING
mbed_official 489:119543c9f674 49 GPIO_MODE_EVT_RISING_FALLING, // 11 = STM_MODE_EVT_RISING_FALLING
mbed_official 489:119543c9f674 50 0x10000000 // 12 = STM_MODE_IT_EVT_RESET (not in STM32Cube HAL)
mbed_official 52:a51c77007319 51 };
mbed_official 52:a51c77007319 52
mbed_official 76:aeb1df146756 53 // Enable GPIO clock and return GPIO base address
mbed_official 402:09075a3b15e3 54 uint32_t Set_GPIO_Clock(uint32_t port_idx)
mbed_official 402:09075a3b15e3 55 {
mbed_official 76:aeb1df146756 56 uint32_t gpio_add = 0;
mbed_official 76:aeb1df146756 57 switch (port_idx) {
mbed_official 76:aeb1df146756 58 case PortA:
mbed_official 76:aeb1df146756 59 gpio_add = GPIOA_BASE;
mbed_official 489:119543c9f674 60 __GPIOA_CLK_ENABLE();
mbed_official 76:aeb1df146756 61 break;
mbed_official 76:aeb1df146756 62 case PortB:
mbed_official 76:aeb1df146756 63 gpio_add = GPIOB_BASE;
mbed_official 489:119543c9f674 64 __GPIOB_CLK_ENABLE();
mbed_official 76:aeb1df146756 65 break;
mbed_official 76:aeb1df146756 66 case PortC:
mbed_official 76:aeb1df146756 67 gpio_add = GPIOC_BASE;
mbed_official 489:119543c9f674 68 __GPIOC_CLK_ENABLE();
mbed_official 76:aeb1df146756 69 break;
mbed_official 76:aeb1df146756 70 case PortD:
mbed_official 76:aeb1df146756 71 gpio_add = GPIOD_BASE;
mbed_official 489:119543c9f674 72 __GPIOD_CLK_ENABLE();
mbed_official 76:aeb1df146756 73 break;
mbed_official 76:aeb1df146756 74 default:
mbed_official 489:119543c9f674 75 error("Pinmap error: wrong port number.");
mbed_official 76:aeb1df146756 76 break;
mbed_official 76:aeb1df146756 77 }
mbed_official 76:aeb1df146756 78 return gpio_add;
mbed_official 76:aeb1df146756 79 }
mbed_official 76:aeb1df146756 80
mbed_official 52:a51c77007319 81 /**
mbed_official 76:aeb1df146756 82 * Configure pin (input, output, alternate function or analog) + output speed + AF
mbed_official 52:a51c77007319 83 */
mbed_official 402:09075a3b15e3 84 void pin_function(PinName pin, int data)
mbed_official 402:09075a3b15e3 85 {
mbed_official 227:7bd0639b8911 86 MBED_ASSERT(pin != (PinName)NC);
mbed_official 76:aeb1df146756 87 // Get the pin informations
mbed_official 52:a51c77007319 88 uint32_t mode = STM_PIN_MODE(data);
mbed_official 489:119543c9f674 89 uint32_t pupd = STM_PIN_PUPD(data);
mbed_official 52:a51c77007319 90 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 52:a51c77007319 91
mbed_official 76:aeb1df146756 92 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 93 uint32_t pin_index = STM_PIN(pin);
mbed_official 52:a51c77007319 94
mbed_official 76:aeb1df146756 95 // Enable GPIO clock
mbed_official 76:aeb1df146756 96 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 84:f54042cbc282 97 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 80:66393a7b209d 98
mbed_official 76:aeb1df146756 99 // Enable AFIO clock
mbed_official 489:119543c9f674 100 __HAL_RCC_AFIO_CLK_ENABLE();
mbed_official 80:66393a7b209d 101
mbed_official 80:66393a7b209d 102 // Configure Alternate Function
mbed_official 80:66393a7b209d 103 // Warning: Must be done before the GPIO is initialized
mbed_official 489:119543c9f674 104 if (afnum > 0) {
mbed_official 489:119543c9f674 105 switch (afnum) {
mbed_official 489:119543c9f674 106 case 1: // Remap SPI1
mbed_official 489:119543c9f674 107 __HAL_AFIO_REMAP_SPI1_ENABLE();
mbed_official 489:119543c9f674 108 break;
mbed_official 489:119543c9f674 109 case 2: // Remap I2C1
mbed_official 489:119543c9f674 110 __HAL_AFIO_REMAP_I2C1_ENABLE();
mbed_official 489:119543c9f674 111 break;
mbed_official 489:119543c9f674 112 case 3: // Remap USART1
mbed_official 489:119543c9f674 113 __HAL_AFIO_REMAP_USART1_ENABLE();
mbed_official 489:119543c9f674 114 break;
mbed_official 489:119543c9f674 115 case 4: // Remap USART2
mbed_official 489:119543c9f674 116 __HAL_AFIO_REMAP_USART2_ENABLE();
mbed_official 489:119543c9f674 117 break;
mbed_official 489:119543c9f674 118 case 5: // Partial Remap USART3
mbed_official 489:119543c9f674 119 __HAL_AFIO_REMAP_USART3_PARTIAL();
mbed_official 489:119543c9f674 120 break;
mbed_official 489:119543c9f674 121 case 6: // Partial Remap TIM1
mbed_official 489:119543c9f674 122 __HAL_AFIO_REMAP_TIM1_PARTIAL();
mbed_official 489:119543c9f674 123 break;
mbed_official 489:119543c9f674 124 case 7: // Partial Remap TIM3
mbed_official 489:119543c9f674 125 __HAL_AFIO_REMAP_TIM3_PARTIAL();
mbed_official 489:119543c9f674 126 break;
mbed_official 489:119543c9f674 127 case 8: // Full Remap TIM2
mbed_official 489:119543c9f674 128 __HAL_AFIO_REMAP_TIM2_ENABLE();
mbed_official 489:119543c9f674 129 break;
mbed_official 489:119543c9f674 130 case 9: // Full Remap TIM3
mbed_official 489:119543c9f674 131 __HAL_AFIO_REMAP_TIM3_ENABLE();
mbed_official 489:119543c9f674 132 break;
mbed_official 489:119543c9f674 133 default:
mbed_official 489:119543c9f674 134 break;
mbed_official 489:119543c9f674 135 }
mbed_official 80:66393a7b209d 136 }
mbed_official 174:8bb9f3a33240 137
mbed_official 52:a51c77007319 138 // Configure GPIO
mbed_official 84:f54042cbc282 139 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 489:119543c9f674 140 GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
mbed_official 489:119543c9f674 141 GPIO_InitStructure.Mode = gpio_mode[mode];
mbed_official 489:119543c9f674 142 GPIO_InitStructure.Pull = pupd;
mbed_official 489:119543c9f674 143 GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
mbed_official 489:119543c9f674 144 HAL_GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 174:8bb9f3a33240 145
mbed_official 52:a51c77007319 146 // Disconnect JTAG-DP + SW-DP signals.
mbed_official 52:a51c77007319 147 // Warning: Need to reconnect under reset
mbed_official 52:a51c77007319 148 if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 489:119543c9f674 149 __HAL_AFIO_REMAP_SWJ_DISABLE(); // JTAG-DP Disabled and SW-DP Disabled
mbed_official 52:a51c77007319 150 }
mbed_official 52:a51c77007319 151 if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
mbed_official 489:119543c9f674 152 __HAL_AFIO_REMAP_SWJ_NOJTAG(); // JTAG-DP Disabled and SW-DP enabled
mbed_official 174:8bb9f3a33240 153 }
mbed_official 52:a51c77007319 154 }
mbed_official 52:a51c77007319 155
mbed_official 52:a51c77007319 156 /**
mbed_official 76:aeb1df146756 157 * Configure pin pull-up/pull-down
mbed_official 52:a51c77007319 158 */
mbed_official 402:09075a3b15e3 159 void pin_mode(PinName pin, PinMode mode)
mbed_official 402:09075a3b15e3 160 {
mbed_official 227:7bd0639b8911 161 MBED_ASSERT(pin != (PinName)NC);
mbed_official 174:8bb9f3a33240 162
mbed_official 76:aeb1df146756 163 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 164 uint32_t pin_index = STM_PIN(pin);
mbed_official 52:a51c77007319 165
mbed_official 52:a51c77007319 166 // Enable GPIO clock
mbed_official 76:aeb1df146756 167 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 84:f54042cbc282 168 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 174:8bb9f3a33240 169
mbed_official 52:a51c77007319 170 // Configure open-drain and pull-up/down
mbed_official 52:a51c77007319 171 switch (mode) {
mbed_official 174:8bb9f3a33240 172 case PullNone:
mbed_official 489:119543c9f674 173 break;
mbed_official 174:8bb9f3a33240 174 case PullUp:
mbed_official 174:8bb9f3a33240 175 case PullDown:
mbed_official 489:119543c9f674 176 // Set pull-up / pull-down for Input mode
mbed_official 489:119543c9f674 177 if (pin_index < 8) {
mbed_official 489:119543c9f674 178 if ((gpio->CRL & (0x03 << (pin_index * 4))) == 0) { // MODE bits = Input mode
mbed_official 489:119543c9f674 179 gpio->CRL |= (0x08 << (pin_index * 4)); // Set pull-up / pull-down
mbed_official 537:c61a9ac6f5c2 180 gpio->CRL &= ~(0x08 << ((pin_index * 4)-1)); // ENSURES GPIOx_CRL.CNFx.bit0 = 0
mbed_official 489:119543c9f674 181 }
mbed_official 489:119543c9f674 182 } else {
mbed_official 489:119543c9f674 183 if ((gpio->CRH & (0x03 << ((pin_index % 8) * 4))) == 0) { // MODE bits = Input mode
mbed_official 489:119543c9f674 184 gpio->CRH |= (0x08 << ((pin_index % 8) * 4)); // Set pull-up / pull-down
mbed_official 537:c61a9ac6f5c2 185 gpio->CRH &= ~(0x08 << (((pin_index % 8) * 4)-1)); // ENSURES GPIOx_CRH.CNFx.bit0 = 0
mbed_official 489:119543c9f674 186 }
mbed_official 489:119543c9f674 187 }
mbed_official 537:c61a9ac6f5c2 188 // Now it's time to setup properly if pullup or pulldown. This is done in ODR register:
mbed_official 537:c61a9ac6f5c2 189 // set pull-up => bit=1, set pull-down => bit = 0
mbed_official 537:c61a9ac6f5c2 190 if (mode == PullUp) {
mbed_official 537:c61a9ac6f5c2 191 gpio->ODR |= (0x01 << (pin_index)); // Set pull-up
mbed_official 537:c61a9ac6f5c2 192 } else{
mbed_official 537:c61a9ac6f5c2 193 gpio->ODR &= ~(0x01 << (pin_index)); // Set pull-down
mbed_official 537:c61a9ac6f5c2 194 }
mbed_official 174:8bb9f3a33240 195 break;
mbed_official 174:8bb9f3a33240 196 case OpenDrain:
mbed_official 489:119543c9f674 197 // Set open-drain for Output mode (General Purpose or Alternate Function)
mbed_official 174:8bb9f3a33240 198 if (pin_index < 8) {
mbed_official 174:8bb9f3a33240 199 if ((gpio->CRL & (0x03 << (pin_index * 4))) > 0) { // MODE bits = Output mode
mbed_official 174:8bb9f3a33240 200 gpio->CRL |= (0x04 << (pin_index * 4)); // Set open-drain
mbed_official 174:8bb9f3a33240 201 }
mbed_official 174:8bb9f3a33240 202 } else {
mbed_official 174:8bb9f3a33240 203 if ((gpio->CRH & (0x03 << ((pin_index % 8) * 4))) > 0) { // MODE bits = Output mode
mbed_official 174:8bb9f3a33240 204 gpio->CRH |= (0x04 << ((pin_index % 8) * 4)); // Set open-drain
mbed_official 174:8bb9f3a33240 205 }
mbed_official 52:a51c77007319 206 }
mbed_official 489:119543c9f674 207 break;
mbed_official 174:8bb9f3a33240 208 default:
mbed_official 174:8bb9f3a33240 209 break;
mbed_official 52:a51c77007319 210 }
mbed_official 52:a51c77007319 211 }