Fawwaz Nadzmy / mbed-STM

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

targets/TARGET_STM/TARGET_STM32F4/pinmap.c@153:9398a535854b, 2016-12-22 (annotated)

Committer:
fwndz
Date:
Thu Dec 22 05:12:40 2016 +0000
Revision:
153:9398a535854b
Parent:
149:156823d33999 
device target maximize

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 149:156823d33999 1 /* mbed Microcontroller Library
<> 149:156823d33999 2 *******************************************************************************
<> 149:156823d33999 3 * Copyright (c) 2015, STMicroelectronics
<> 149:156823d33999 4 * All rights reserved.
<> 149:156823d33999 5 *
<> 149:156823d33999 6 * Redistribution and use in source and binary forms, with or without
<> 149:156823d33999 7 * modification, are permitted provided that the following conditions are met:
<> 149:156823d33999 8 *
<> 149:156823d33999 9 * 1. Redistributions of source code must retain the above copyright notice,
<> 149:156823d33999 10 * this list of conditions and the following disclaimer.
<> 149:156823d33999 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 149:156823d33999 12 * this list of conditions and the following disclaimer in the documentation
<> 149:156823d33999 13 * and/or other materials provided with the distribution.
<> 149:156823d33999 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 149:156823d33999 15 * may be used to endorse or promote products derived from this software
<> 149:156823d33999 16 * without specific prior written permission.
<> 149:156823d33999 17 *
<> 149:156823d33999 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 149:156823d33999 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 149:156823d33999 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 149:156823d33999 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 149:156823d33999 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 149:156823d33999 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 149:156823d33999 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 149:156823d33999 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 149:156823d33999 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 149:156823d33999 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 149:156823d33999 28 *******************************************************************************
<> 149:156823d33999 29 */
<> 149:156823d33999 30 #include "mbed_assert.h"
<> 149:156823d33999 31 #include "pinmap.h"
<> 149:156823d33999 32 #include "PortNames.h"
<> 149:156823d33999 33 #include "mbed_error.h"
<> 149:156823d33999 34
<> 149:156823d33999 35 // GPIO mode look-up table
<> 149:156823d33999 36 static const uint32_t gpio_mode[13] = {
<> 149:156823d33999 37 0x00000000, // 0 = GPIO_MODE_INPUT
<> 149:156823d33999 38 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
<> 149:156823d33999 39 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
<> 149:156823d33999 40 0x00000002, // 3 = GPIO_MODE_AF_PP
<> 149:156823d33999 41 0x00000012, // 4 = GPIO_MODE_AF_OD
<> 149:156823d33999 42 0x00000003, // 5 = GPIO_MODE_ANALOG
<> 149:156823d33999 43 0x10110000, // 6 = GPIO_MODE_IT_RISING
<> 149:156823d33999 44 0x10210000, // 7 = GPIO_MODE_IT_FALLING
<> 149:156823d33999 45 0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING
<> 149:156823d33999 46 0x10120000, // 9 = GPIO_MODE_EVT_RISING
<> 149:156823d33999 47 0x10220000, // 10 = GPIO_MODE_EVT_FALLING
<> 149:156823d33999 48 0x10320000, // 11 = GPIO_MODE_EVT_RISING_FALLING
<> 149:156823d33999 49 0x10000000 // 12 = Reset GPIO_MODE_IT_EVT
<> 149:156823d33999 50 };
<> 149:156823d33999 51
<> 149:156823d33999 52 // Enable GPIO clock and return GPIO base address
<> 149:156823d33999 53 uint32_t Set_GPIO_Clock(uint32_t port_idx)
<> 149:156823d33999 54 {
<> 149:156823d33999 55 uint32_t gpio_add = 0;
<> 149:156823d33999 56 switch (port_idx) {
<> 149:156823d33999 57 case PortA:
<> 149:156823d33999 58 gpio_add = GPIOA_BASE;
<> 149:156823d33999 59 __GPIOA_CLK_ENABLE();
<> 149:156823d33999 60 break;
<> 149:156823d33999 61 case PortB:
<> 149:156823d33999 62 gpio_add = GPIOB_BASE;
<> 149:156823d33999 63 __GPIOB_CLK_ENABLE();
<> 149:156823d33999 64 break;
<> 149:156823d33999 65 case PortC:
<> 149:156823d33999 66 gpio_add = GPIOC_BASE;
<> 149:156823d33999 67 __GPIOC_CLK_ENABLE();
<> 149:156823d33999 68 break;
<> 149:156823d33999 69 #if defined GPIOD_BASE
<> 149:156823d33999 70 case PortD:
<> 149:156823d33999 71 gpio_add = GPIOD_BASE;
<> 149:156823d33999 72 __GPIOD_CLK_ENABLE();
<> 149:156823d33999 73 break;
<> 149:156823d33999 74 #endif
<> 149:156823d33999 75 #if defined GPIOE_BASE
<> 149:156823d33999 76 case PortE:
<> 149:156823d33999 77 gpio_add = GPIOE_BASE;
<> 149:156823d33999 78 __GPIOE_CLK_ENABLE();
<> 149:156823d33999 79 break;
<> 149:156823d33999 80 #endif
<> 149:156823d33999 81 #if defined GPIOF_BASE
<> 149:156823d33999 82 case PortF:
<> 149:156823d33999 83 gpio_add = GPIOF_BASE;
<> 149:156823d33999 84 __GPIOF_CLK_ENABLE();
<> 149:156823d33999 85 break;
<> 149:156823d33999 86 #endif
<> 149:156823d33999 87 #if defined GPIOG_BASE
<> 149:156823d33999 88 case PortG:
<> 149:156823d33999 89 gpio_add = GPIOG_BASE;
<> 149:156823d33999 90 __GPIOG_CLK_ENABLE();
<> 149:156823d33999 91 break;
<> 149:156823d33999 92 #endif
<> 149:156823d33999 93 #if defined GPIOH_BASE
<> 149:156823d33999 94 case PortH:
<> 149:156823d33999 95 gpio_add = GPIOH_BASE;
<> 149:156823d33999 96 __GPIOH_CLK_ENABLE();
<> 149:156823d33999 97 break;
<> 149:156823d33999 98 #endif
<> 149:156823d33999 99 #if defined GPIOI_BASE
<> 149:156823d33999 100 case PortI:
<> 149:156823d33999 101 gpio_add = GPIOI_BASE;
<> 149:156823d33999 102 __GPIOI_CLK_ENABLE();
<> 149:156823d33999 103 break;
<> 149:156823d33999 104 #endif
<> 149:156823d33999 105 #if defined GPIOJ_BASE
<> 149:156823d33999 106 case PortJ:
<> 149:156823d33999 107 gpio_add = GPIOJ_BASE;
<> 149:156823d33999 108 __GPIOJ_CLK_ENABLE();
<> 149:156823d33999 109 break;
<> 149:156823d33999 110 #endif
<> 149:156823d33999 111 #if defined GPIOK_BASE
<> 149:156823d33999 112 case PortK:
<> 149:156823d33999 113 gpio_add = GPIOK_BASE;
<> 149:156823d33999 114 __GPIOK_CLK_ENABLE();
<> 149:156823d33999 115 break;
<> 149:156823d33999 116 #endif
<> 149:156823d33999 117 default:
<> 149:156823d33999 118 error("Pinmap error: wrong port number.");
<> 149:156823d33999 119 break;
<> 149:156823d33999 120 }
<> 149:156823d33999 121 return gpio_add;
<> 149:156823d33999 122 }
<> 149:156823d33999 123
<> 149:156823d33999 124 /**
<> 149:156823d33999 125 * Configure pin (mode, speed, output type and pull-up/pull-down)
<> 149:156823d33999 126 */
<> 149:156823d33999 127 void pin_function(PinName pin, int data)
<> 149:156823d33999 128 {
<> 149:156823d33999 129 MBED_ASSERT(pin != (PinName)NC);
<> 149:156823d33999 130 // Get the pin informations
<> 149:156823d33999 131 uint32_t mode = STM_PIN_MODE(data);
<> 149:156823d33999 132 uint32_t pupd = STM_PIN_PUPD(data);
<> 149:156823d33999 133 uint32_t afnum = STM_PIN_AFNUM(data);
<> 149:156823d33999 134
<> 149:156823d33999 135 uint32_t port_index = STM_PORT(pin);
<> 149:156823d33999 136 uint32_t pin_index = STM_PIN(pin);
<> 149:156823d33999 137
<> 149:156823d33999 138 // Enable GPIO clock
<> 149:156823d33999 139 uint32_t gpio_add = Set_GPIO_Clock(port_index);
<> 149:156823d33999 140 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
<> 149:156823d33999 141
<> 149:156823d33999 142 // Configure GPIO
<> 149:156823d33999 143 GPIO_InitTypeDef GPIO_InitStructure;
<> 149:156823d33999 144 GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
<> 149:156823d33999 145 GPIO_InitStructure.Mode = gpio_mode[mode];
<> 149:156823d33999 146 GPIO_InitStructure.Pull = pupd;
<> 149:156823d33999 147 GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
<> 149:156823d33999 148 GPIO_InitStructure.Alternate = afnum;
<> 149:156823d33999 149 HAL_GPIO_Init(gpio, &GPIO_InitStructure);
<> 149:156823d33999 150
<> 149:156823d33999 151 // [TODO] Disconnect JTAG-DP + SW-DP signals.
<> 149:156823d33999 152 // Warning: Need to reconnect under reset
<> 149:156823d33999 153 //if ((pin == PA_13) || (pin == PA_14)) {
<> 149:156823d33999 154 //
<> 149:156823d33999 155 //}
<> 149:156823d33999 156 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
<> 149:156823d33999 157 //
<> 149:156823d33999 158 //}
<> 149:156823d33999 159 }
<> 149:156823d33999 160
<> 149:156823d33999 161 /**
<> 149:156823d33999 162 * Configure pin pull-up/pull-down
<> 149:156823d33999 163 */
<> 149:156823d33999 164 void pin_mode(PinName pin, PinMode mode)
<> 149:156823d33999 165 {
<> 149:156823d33999 166 MBED_ASSERT(pin != (PinName)NC);
<> 149:156823d33999 167 uint32_t port_index = STM_PORT(pin);
<> 149:156823d33999 168 uint32_t pin_index = STM_PIN(pin);
<> 149:156823d33999 169
<> 149:156823d33999 170 // Enable GPIO clock
<> 149:156823d33999 171 uint32_t gpio_add = Set_GPIO_Clock(port_index);
<> 149:156823d33999 172 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
<> 149:156823d33999 173
<> 149:156823d33999 174 // Configure pull-up/pull-down resistors
<> 149:156823d33999 175 uint32_t pupd = (uint32_t)mode;
<> 149:156823d33999 176 if (pupd > 2) {
<> 149:156823d33999 177 pupd = 0; // Open-drain = No pull-up/No pull-down
<> 149:156823d33999 178 }
<> 149:156823d33999 179 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
<> 149:156823d33999 180 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
<> 149:156823d33999 181 }
<> 149:156823d33999 182
<> 149:156823d33999 183 /* Internal function for setting the gpiomode/function
<> 149:156823d33999 184 * without changing Pull mode
<> 149:156823d33999 185 */
<> 149:156823d33999 186 void pin_function_gpiomode(PinName pin, uint32_t gpiomode) {
<> 149:156823d33999 187
<> 149:156823d33999 188 /* Read current pull state from HW to avoid over-write*/
<> 149:156823d33999 189 uint32_t port_index = STM_PORT(pin);
<> 149:156823d33999 190 uint32_t pin_index = STM_PIN(pin);
<> 149:156823d33999 191 GPIO_TypeDef *gpio = (GPIO_TypeDef *) Set_GPIO_Clock(port_index);
<> 149:156823d33999 192 uint32_t temp = gpio->PUPDR;
<> 149:156823d33999 193 uint32_t pull = (temp >> (pin_index * 2U)) & GPIO_PUPDR_PUPDR0;
<> 149:156823d33999 194
<> 149:156823d33999 195 /* Then re-use global function for updating the mode part*/
<> 149:156823d33999 196 pin_function(pin, STM_PIN_DATA(gpiomode, pull, 0));
<> 149:156823d33999 197 }