gabriel della-monica / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32F411RE/pinmap.c@429:cc5da43e7bf6, 2014-12-09 (annotated)

Committer:
mbed_official
Date:
Tue Dec 09 14:15:07 2014 +0000
Revision:
429:cc5da43e7bf6
Parent:
targets/hal/TARGET_STM/TARGET_NUCLEO_F411RE/pinmap.c@327:a7562ccfb9d5 
Synchronized with git revision 75673df767b901eda5c6ea6c737b58deb390c955



Full URL: https://github.com/mbedmicro/mbed/commit/75673df767b901eda5c6ea6c737b58deb390c955/



Add support for mDot with STM32F411RE processor

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 235:685d5f11838f 1 /* mbed Microcontroller Library
mbed_official 235:685d5f11838f 2 *******************************************************************************
mbed_official 235:685d5f11838f 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 235:685d5f11838f 4 * All rights reserved.
mbed_official 235:685d5f11838f 5 *
mbed_official 235:685d5f11838f 6 * Redistribution and use in source and binary forms, with or without
mbed_official 235:685d5f11838f 7 * modification, are permitted provided that the following conditions are met:
mbed_official 235:685d5f11838f 8 *
mbed_official 235:685d5f11838f 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 235:685d5f11838f 10 * this list of conditions and the following disclaimer.
mbed_official 235:685d5f11838f 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 235:685d5f11838f 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 235:685d5f11838f 13 * and/or other materials provided with the distribution.
mbed_official 235:685d5f11838f 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 235:685d5f11838f 15 * may be used to endorse or promote products derived from this software
mbed_official 235:685d5f11838f 16 * without specific prior written permission.
mbed_official 235:685d5f11838f 17 *
mbed_official 235:685d5f11838f 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 235:685d5f11838f 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 235:685d5f11838f 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 235:685d5f11838f 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 235:685d5f11838f 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 235:685d5f11838f 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 235:685d5f11838f 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 235:685d5f11838f 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 235:685d5f11838f 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 235:685d5f11838f 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 235:685d5f11838f 28 *******************************************************************************
mbed_official 235:685d5f11838f 29 */
mbed_official 235:685d5f11838f 30 #include "mbed_assert.h"
mbed_official 235:685d5f11838f 31 #include "pinmap.h"
mbed_official 235:685d5f11838f 32 #include "PortNames.h"
mbed_official 285:31249416b6f9 33 #include "mbed_error.h"
mbed_official 235:685d5f11838f 34
mbed_official 235:685d5f11838f 35 // GPIO mode look-up table
mbed_official 327:a7562ccfb9d5 36 static const uint32_t gpio_mode[13] = {
mbed_official 235:685d5f11838f 37 0x00000000, // 0 = GPIO_MODE_INPUT
mbed_official 235:685d5f11838f 38 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
mbed_official 235:685d5f11838f 39 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
mbed_official 235:685d5f11838f 40 0x00000002, // 3 = GPIO_MODE_AF_PP
mbed_official 235:685d5f11838f 41 0x00000012, // 4 = GPIO_MODE_AF_OD
mbed_official 235:685d5f11838f 42 0x00000003, // 5 = GPIO_MODE_ANALOG
mbed_official 235:685d5f11838f 43 0x10110000, // 6 = GPIO_MODE_IT_RISING
mbed_official 235:685d5f11838f 44 0x10210000, // 7 = GPIO_MODE_IT_FALLING
mbed_official 235:685d5f11838f 45 0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING
mbed_official 235:685d5f11838f 46 0x10120000, // 9 = GPIO_MODE_EVT_RISING
mbed_official 235:685d5f11838f 47 0x10220000, // 10 = GPIO_MODE_EVT_FALLING
mbed_official 327:a7562ccfb9d5 48 0x10320000, // 11 = GPIO_MODE_EVT_RISING_FALLING
mbed_official 327:a7562ccfb9d5 49 0x10000000 // 12 = Reset GPIO_MODE_IT_EVT
mbed_official 235:685d5f11838f 50 };
mbed_official 235:685d5f11838f 51
mbed_official 235:685d5f11838f 52 // Enable GPIO clock and return GPIO base address
mbed_official 235:685d5f11838f 53 uint32_t Set_GPIO_Clock(uint32_t port_idx)
mbed_official 235:685d5f11838f 54 {
mbed_official 235:685d5f11838f 55 uint32_t gpio_add = 0;
mbed_official 235:685d5f11838f 56 switch (port_idx) {
mbed_official 235:685d5f11838f 57 case PortA:
mbed_official 235:685d5f11838f 58 gpio_add = GPIOA_BASE;
mbed_official 235:685d5f11838f 59 __GPIOA_CLK_ENABLE();
mbed_official 235:685d5f11838f 60 break;
mbed_official 235:685d5f11838f 61 case PortB:
mbed_official 235:685d5f11838f 62 gpio_add = GPIOB_BASE;
mbed_official 235:685d5f11838f 63 __GPIOB_CLK_ENABLE();
mbed_official 235:685d5f11838f 64 break;
mbed_official 235:685d5f11838f 65 case PortC:
mbed_official 235:685d5f11838f 66 gpio_add = GPIOC_BASE;
mbed_official 235:685d5f11838f 67 __GPIOC_CLK_ENABLE();
mbed_official 235:685d5f11838f 68 break;
mbed_official 235:685d5f11838f 69 case PortD:
mbed_official 235:685d5f11838f 70 gpio_add = GPIOD_BASE;
mbed_official 235:685d5f11838f 71 __GPIOD_CLK_ENABLE();
mbed_official 235:685d5f11838f 72 break;
mbed_official 235:685d5f11838f 73 case PortH:
mbed_official 235:685d5f11838f 74 gpio_add = GPIOH_BASE;
mbed_official 235:685d5f11838f 75 __GPIOH_CLK_ENABLE();
mbed_official 235:685d5f11838f 76 break;
mbed_official 235:685d5f11838f 77 default:
mbed_official 235:685d5f11838f 78 error("Pinmap error: wrong port number.");
mbed_official 235:685d5f11838f 79 break;
mbed_official 235:685d5f11838f 80 }
mbed_official 235:685d5f11838f 81 return gpio_add;
mbed_official 235:685d5f11838f 82 }
mbed_official 235:685d5f11838f 83
mbed_official 235:685d5f11838f 84 /**
mbed_official 235:685d5f11838f 85 * Configure pin (mode, speed, output type and pull-up/pull-down)
mbed_official 235:685d5f11838f 86 */
mbed_official 235:685d5f11838f 87 void pin_function(PinName pin, int data)
mbed_official 235:685d5f11838f 88 {
mbed_official 235:685d5f11838f 89 MBED_ASSERT(pin != (PinName)NC);
mbed_official 235:685d5f11838f 90 // Get the pin informations
mbed_official 235:685d5f11838f 91 uint32_t mode = STM_PIN_MODE(data);
mbed_official 235:685d5f11838f 92 uint32_t pupd = STM_PIN_PUPD(data);
mbed_official 235:685d5f11838f 93 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 235:685d5f11838f 94
mbed_official 235:685d5f11838f 95 uint32_t port_index = STM_PORT(pin);
mbed_official 235:685d5f11838f 96 uint32_t pin_index = STM_PIN(pin);
mbed_official 235:685d5f11838f 97
mbed_official 235:685d5f11838f 98 // Enable GPIO clock
mbed_official 235:685d5f11838f 99 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 235:685d5f11838f 100 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 235:685d5f11838f 101
mbed_official 235:685d5f11838f 102 // Configure GPIO
mbed_official 235:685d5f11838f 103 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 235:685d5f11838f 104 GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
mbed_official 235:685d5f11838f 105 GPIO_InitStructure.Mode = gpio_mode[mode];
mbed_official 235:685d5f11838f 106 GPIO_InitStructure.Pull = pupd;
mbed_official 235:685d5f11838f 107 GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
mbed_official 235:685d5f11838f 108 GPIO_InitStructure.Alternate = afnum;
mbed_official 235:685d5f11838f 109 HAL_GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 235:685d5f11838f 110
mbed_official 235:685d5f11838f 111 // [TODO] Disconnect JTAG-DP + SW-DP signals.
mbed_official 235:685d5f11838f 112 // Warning: Need to reconnect under reset
mbed_official 235:685d5f11838f 113 //if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 235:685d5f11838f 114 //
mbed_official 235:685d5f11838f 115 //}
mbed_official 235:685d5f11838f 116 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
mbed_official 235:685d5f11838f 117 //
mbed_official 235:685d5f11838f 118 //}
mbed_official 235:685d5f11838f 119 }
mbed_official 235:685d5f11838f 120
mbed_official 235:685d5f11838f 121 /**
mbed_official 235:685d5f11838f 122 * Configure pin pull-up/pull-down
mbed_official 235:685d5f11838f 123 */
mbed_official 235:685d5f11838f 124 void pin_mode(PinName pin, PinMode mode)
mbed_official 235:685d5f11838f 125 {
mbed_official 235:685d5f11838f 126 MBED_ASSERT(pin != (PinName)NC);
mbed_official 235:685d5f11838f 127 uint32_t port_index = STM_PORT(pin);
mbed_official 235:685d5f11838f 128 uint32_t pin_index = STM_PIN(pin);
mbed_official 235:685d5f11838f 129
mbed_official 235:685d5f11838f 130 // Enable GPIO clock
mbed_official 235:685d5f11838f 131 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 235:685d5f11838f 132 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 235:685d5f11838f 133
mbed_official 235:685d5f11838f 134 // Configure pull-up/pull-down resistors
mbed_official 235:685d5f11838f 135 uint32_t pupd = (uint32_t)mode;
mbed_official 235:685d5f11838f 136 if (pupd > 2)
mbed_official 235:685d5f11838f 137 pupd = 0; // Open-drain = No pull-up/No pull-down
mbed_official 235:685d5f11838f 138 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
mbed_official 235:685d5f11838f 139 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
mbed_official 235:685d5f11838f 140
mbed_official 235:685d5f11838f 141 }