lzbp li / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32F4/pinmap.c@636:b0d178e9fa10, 2016-07-07 (annotated)

Committer:
lzbpli
Date:
Thu Jul 07 06:48:59 2016 +0000
Revision:
636:b0d178e9fa10
Parent:
559:a5bce224b5d8 
l053

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 442:d916d321e60f 1 /* mbed Microcontroller Library
mbed_official 442:d916d321e60f 2 *******************************************************************************
mbed_official 442:d916d321e60f 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 442:d916d321e60f 4 * All rights reserved.
mbed_official 442:d916d321e60f 5 *
mbed_official 442:d916d321e60f 6 * Redistribution and use in source and binary forms, with or without
mbed_official 442:d916d321e60f 7 * modification, are permitted provided that the following conditions are met:
mbed_official 442:d916d321e60f 8 *
mbed_official 442:d916d321e60f 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 442:d916d321e60f 10 * this list of conditions and the following disclaimer.
mbed_official 442:d916d321e60f 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 442:d916d321e60f 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 442:d916d321e60f 13 * and/or other materials provided with the distribution.
mbed_official 442:d916d321e60f 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 442:d916d321e60f 15 * may be used to endorse or promote products derived from this software
mbed_official 442:d916d321e60f 16 * without specific prior written permission.
mbed_official 442:d916d321e60f 17 *
mbed_official 442:d916d321e60f 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 442:d916d321e60f 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 442:d916d321e60f 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 442:d916d321e60f 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 442:d916d321e60f 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 442:d916d321e60f 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 442:d916d321e60f 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 442:d916d321e60f 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 442:d916d321e60f 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 442:d916d321e60f 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 442:d916d321e60f 28 *******************************************************************************
mbed_official 442:d916d321e60f 29 */
mbed_official 442:d916d321e60f 30 #include "mbed_assert.h"
mbed_official 442:d916d321e60f 31 #include "pinmap.h"
mbed_official 442:d916d321e60f 32 #include "PortNames.h"
mbed_official 442:d916d321e60f 33 #include "mbed_error.h"
mbed_official 442:d916d321e60f 34
mbed_official 442:d916d321e60f 35 // GPIO mode look-up table
mbed_official 442:d916d321e60f 36 static const uint32_t gpio_mode[13] = {
mbed_official 442:d916d321e60f 37 0x00000000, // 0 = GPIO_MODE_INPUT
mbed_official 442:d916d321e60f 38 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
mbed_official 442:d916d321e60f 39 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
mbed_official 442:d916d321e60f 40 0x00000002, // 3 = GPIO_MODE_AF_PP
mbed_official 442:d916d321e60f 41 0x00000012, // 4 = GPIO_MODE_AF_OD
mbed_official 442:d916d321e60f 42 0x00000003, // 5 = GPIO_MODE_ANALOG
mbed_official 442:d916d321e60f 43 0x10110000, // 6 = GPIO_MODE_IT_RISING
mbed_official 442:d916d321e60f 44 0x10210000, // 7 = GPIO_MODE_IT_FALLING
mbed_official 442:d916d321e60f 45 0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING
mbed_official 442:d916d321e60f 46 0x10120000, // 9 = GPIO_MODE_EVT_RISING
mbed_official 442:d916d321e60f 47 0x10220000, // 10 = GPIO_MODE_EVT_FALLING
mbed_official 442:d916d321e60f 48 0x10320000, // 11 = GPIO_MODE_EVT_RISING_FALLING
mbed_official 442:d916d321e60f 49 0x10000000 // 12 = Reset GPIO_MODE_IT_EVT
mbed_official 442:d916d321e60f 50 };
mbed_official 442:d916d321e60f 51
mbed_official 442:d916d321e60f 52 // Enable GPIO clock and return GPIO base address
mbed_official 442:d916d321e60f 53 uint32_t Set_GPIO_Clock(uint32_t port_idx)
mbed_official 442:d916d321e60f 54 {
mbed_official 442:d916d321e60f 55 uint32_t gpio_add = 0;
mbed_official 442:d916d321e60f 56 switch (port_idx) {
mbed_official 442:d916d321e60f 57 case PortA:
mbed_official 442:d916d321e60f 58 gpio_add = GPIOA_BASE;
mbed_official 442:d916d321e60f 59 __GPIOA_CLK_ENABLE();
mbed_official 442:d916d321e60f 60 break;
mbed_official 442:d916d321e60f 61 case PortB:
mbed_official 442:d916d321e60f 62 gpio_add = GPIOB_BASE;
mbed_official 442:d916d321e60f 63 __GPIOB_CLK_ENABLE();
mbed_official 442:d916d321e60f 64 break;
mbed_official 442:d916d321e60f 65 case PortC:
mbed_official 442:d916d321e60f 66 gpio_add = GPIOC_BASE;
mbed_official 442:d916d321e60f 67 __GPIOC_CLK_ENABLE();
mbed_official 442:d916d321e60f 68 break;
mbed_official 559:a5bce224b5d8 69 #if defined GPIOD_BASE
mbed_official 442:d916d321e60f 70 case PortD:
mbed_official 442:d916d321e60f 71 gpio_add = GPIOD_BASE;
mbed_official 442:d916d321e60f 72 __GPIOD_CLK_ENABLE();
mbed_official 442:d916d321e60f 73 break;
mbed_official 559:a5bce224b5d8 74 #endif
mbed_official 559:a5bce224b5d8 75 #if defined GPIOE_BASE
mbed_official 442:d916d321e60f 76 case PortE:
mbed_official 442:d916d321e60f 77 gpio_add = GPIOE_BASE;
mbed_official 442:d916d321e60f 78 __GPIOE_CLK_ENABLE();
mbed_official 442:d916d321e60f 79 break;
mbed_official 559:a5bce224b5d8 80 #endif
mbed_official 442:d916d321e60f 81 #if defined GPIOF_BASE
mbed_official 442:d916d321e60f 82 case PortF:
mbed_official 442:d916d321e60f 83 gpio_add = GPIOF_BASE;
mbed_official 442:d916d321e60f 84 __GPIOF_CLK_ENABLE();
mbed_official 442:d916d321e60f 85 break;
mbed_official 442:d916d321e60f 86 #endif
mbed_official 442:d916d321e60f 87 #if defined GPIOG_BASE
mbed_official 442:d916d321e60f 88 case PortG:
mbed_official 442:d916d321e60f 89 gpio_add = GPIOG_BASE;
mbed_official 442:d916d321e60f 90 __GPIOG_CLK_ENABLE();
mbed_official 442:d916d321e60f 91 break;
mbed_official 442:d916d321e60f 92 #endif
mbed_official 442:d916d321e60f 93 #if defined GPIOH_BASE
mbed_official 442:d916d321e60f 94 case PortH:
mbed_official 442:d916d321e60f 95 gpio_add = GPIOH_BASE;
mbed_official 442:d916d321e60f 96 __GPIOH_CLK_ENABLE();
mbed_official 442:d916d321e60f 97 break;
mbed_official 442:d916d321e60f 98 #endif
mbed_official 442:d916d321e60f 99 #if defined GPIOI_BASE
mbed_official 442:d916d321e60f 100 case PortI:
mbed_official 442:d916d321e60f 101 gpio_add = GPIOI_BASE;
mbed_official 442:d916d321e60f 102 __GPIOI_CLK_ENABLE();
mbed_official 442:d916d321e60f 103 break;
mbed_official 442:d916d321e60f 104 #endif
mbed_official 442:d916d321e60f 105 #if defined GPIOJ_BASE
mbed_official 442:d916d321e60f 106 case PortJ:
mbed_official 442:d916d321e60f 107 gpio_add = GPIOJ_BASE;
mbed_official 442:d916d321e60f 108 __GPIOJ_CLK_ENABLE();
mbed_official 442:d916d321e60f 109 break;
mbed_official 442:d916d321e60f 110 #endif
mbed_official 442:d916d321e60f 111 #if defined GPIOK_BASE
mbed_official 442:d916d321e60f 112 case PortK:
mbed_official 442:d916d321e60f 113 gpio_add = GPIOK_BASE;
mbed_official 442:d916d321e60f 114 __GPIOK_CLK_ENABLE();
mbed_official 442:d916d321e60f 115 break;
mbed_official 442:d916d321e60f 116 #endif
mbed_official 442:d916d321e60f 117 default:
mbed_official 442:d916d321e60f 118 error("Pinmap error: wrong port number.");
mbed_official 442:d916d321e60f 119 break;
mbed_official 442:d916d321e60f 120 }
mbed_official 442:d916d321e60f 121 return gpio_add;
mbed_official 442:d916d321e60f 122 }
mbed_official 442:d916d321e60f 123
mbed_official 442:d916d321e60f 124 /**
mbed_official 442:d916d321e60f 125 * Configure pin (mode, speed, output type and pull-up/pull-down)
mbed_official 442:d916d321e60f 126 */
mbed_official 442:d916d321e60f 127 void pin_function(PinName pin, int data)
mbed_official 442:d916d321e60f 128 {
mbed_official 442:d916d321e60f 129 MBED_ASSERT(pin != (PinName)NC);
mbed_official 442:d916d321e60f 130 // Get the pin informations
mbed_official 442:d916d321e60f 131 uint32_t mode = STM_PIN_MODE(data);
mbed_official 442:d916d321e60f 132 uint32_t pupd = STM_PIN_PUPD(data);
mbed_official 442:d916d321e60f 133 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 442:d916d321e60f 134
mbed_official 442:d916d321e60f 135 uint32_t port_index = STM_PORT(pin);
mbed_official 442:d916d321e60f 136 uint32_t pin_index = STM_PIN(pin);
mbed_official 442:d916d321e60f 137
mbed_official 442:d916d321e60f 138 // Enable GPIO clock
mbed_official 442:d916d321e60f 139 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 442:d916d321e60f 140 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 442:d916d321e60f 141
mbed_official 442:d916d321e60f 142 // Configure GPIO
mbed_official 442:d916d321e60f 143 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 442:d916d321e60f 144 GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
mbed_official 442:d916d321e60f 145 GPIO_InitStructure.Mode = gpio_mode[mode];
mbed_official 442:d916d321e60f 146 GPIO_InitStructure.Pull = pupd;
mbed_official 442:d916d321e60f 147 GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
mbed_official 442:d916d321e60f 148 GPIO_InitStructure.Alternate = afnum;
mbed_official 442:d916d321e60f 149 HAL_GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 442:d916d321e60f 150
mbed_official 442:d916d321e60f 151 // [TODO] Disconnect JTAG-DP + SW-DP signals.
mbed_official 442:d916d321e60f 152 // Warning: Need to reconnect under reset
mbed_official 442:d916d321e60f 153 //if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 442:d916d321e60f 154 //
mbed_official 442:d916d321e60f 155 //}
mbed_official 442:d916d321e60f 156 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
mbed_official 442:d916d321e60f 157 //
mbed_official 442:d916d321e60f 158 //}
mbed_official 442:d916d321e60f 159 }
mbed_official 442:d916d321e60f 160
mbed_official 442:d916d321e60f 161 /**
mbed_official 442:d916d321e60f 162 * Configure pin pull-up/pull-down
mbed_official 442:d916d321e60f 163 */
mbed_official 442:d916d321e60f 164 void pin_mode(PinName pin, PinMode mode)
mbed_official 442:d916d321e60f 165 {
mbed_official 442:d916d321e60f 166 MBED_ASSERT(pin != (PinName)NC);
mbed_official 442:d916d321e60f 167 uint32_t port_index = STM_PORT(pin);
mbed_official 442:d916d321e60f 168 uint32_t pin_index = STM_PIN(pin);
mbed_official 442:d916d321e60f 169
mbed_official 442:d916d321e60f 170 // Enable GPIO clock
mbed_official 442:d916d321e60f 171 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 442:d916d321e60f 172 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 442:d916d321e60f 173
mbed_official 442:d916d321e60f 174 // Configure pull-up/pull-down resistors
mbed_official 442:d916d321e60f 175 uint32_t pupd = (uint32_t)mode;
mbed_official 442:d916d321e60f 176 if (pupd > 2)
mbed_official 442:d916d321e60f 177 pupd = 0; // Open-drain = No pull-up/No pull-down
mbed_official 442:d916d321e60f 178 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
mbed_official 442:d916d321e60f 179 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
mbed_official 442:d916d321e60f 180
mbed_official 442:d916d321e60f 181 }