Joris Aerts / mbed-src

mbed library sources

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targets/hal/TARGET_STM/TARGET_STM32L4/pinmap.c@610:813dcc80987e, 2015-08-14 (annotated)

Committer:
mbed_official
Date:
Fri Aug 14 13:15:17 2015 +0100
Revision:
610:813dcc80987e
Synchronized with git revision 6d84db41c6833e0b9b024741eb0616a5f62d5599



Full URL: https://github.com/mbedmicro/mbed/commit/6d84db41c6833e0b9b024741eb0616a5f62d5599/



DISCO_F746NG - Improvements

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 610:813dcc80987e 1 /* mbed Microcontroller Library
mbed_official 610:813dcc80987e 2 *******************************************************************************
mbed_official 610:813dcc80987e 3 * Copyright (c) 2015, STMicroelectronics
mbed_official 610:813dcc80987e 4 * All rights reserved.
mbed_official 610:813dcc80987e 5 *
mbed_official 610:813dcc80987e 6 * Redistribution and use in source and binary forms, with or without
mbed_official 610:813dcc80987e 7 * modification, are permitted provided that the following conditions are met:
mbed_official 610:813dcc80987e 8 *
mbed_official 610:813dcc80987e 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 610:813dcc80987e 10 * this list of conditions and the following disclaimer.
mbed_official 610:813dcc80987e 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 610:813dcc80987e 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 610:813dcc80987e 13 * and/or other materials provided with the distribution.
mbed_official 610:813dcc80987e 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 610:813dcc80987e 15 * may be used to endorse or promote products derived from this software
mbed_official 610:813dcc80987e 16 * without specific prior written permission.
mbed_official 610:813dcc80987e 17 *
mbed_official 610:813dcc80987e 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 610:813dcc80987e 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 610:813dcc80987e 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 610:813dcc80987e 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 610:813dcc80987e 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 610:813dcc80987e 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 610:813dcc80987e 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 610:813dcc80987e 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 610:813dcc80987e 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 610:813dcc80987e 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 610:813dcc80987e 28 *******************************************************************************
mbed_official 610:813dcc80987e 29 */
mbed_official 610:813dcc80987e 30 #include "mbed_assert.h"
mbed_official 610:813dcc80987e 31 #include "pinmap.h"
mbed_official 610:813dcc80987e 32 #include "PortNames.h"
mbed_official 610:813dcc80987e 33 #include "mbed_error.h"
mbed_official 610:813dcc80987e 34
mbed_official 610:813dcc80987e 35 // GPIO mode look-up table
mbed_official 610:813dcc80987e 36 // Warning: order must be the same as the one defined in PinNames.h !!!
mbed_official 610:813dcc80987e 37 static const uint32_t gpio_mode[14] = {
mbed_official 610:813dcc80987e 38 0x00000000, // 0 = GPIO_MODE_INPUT
mbed_official 610:813dcc80987e 39 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
mbed_official 610:813dcc80987e 40 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
mbed_official 610:813dcc80987e 41 0x00000002, // 3 = GPIO_MODE_AF_PP
mbed_official 610:813dcc80987e 42 0x00000012, // 4 = GPIO_MODE_AF_OD
mbed_official 610:813dcc80987e 43 0x00000003, // 5 = GPIO_MODE_ANALOG
mbed_official 610:813dcc80987e 44 0x0000000B, // 6 = GPIO_MODE_ANALOG_ADC_CONTROL
mbed_official 610:813dcc80987e 45 0x10110000, // 7 = GPIO_MODE_IT_RISING
mbed_official 610:813dcc80987e 46 0x10210000, // 8 = GPIO_MODE_IT_FALLING
mbed_official 610:813dcc80987e 47 0x10310000, // 9 = GPIO_MODE_IT_RISING_FALLING
mbed_official 610:813dcc80987e 48 0x10120000, // 10 = GPIO_MODE_EVT_RISING
mbed_official 610:813dcc80987e 49 0x10220000, // 11 = GPIO_MODE_EVT_FALLING
mbed_official 610:813dcc80987e 50 0x10320000, // 12 = GPIO_MODE_EVT_RISING_FALLING
mbed_official 610:813dcc80987e 51 0x10000000 // 13 = Reset IT and EVT (not in STM32Cube HAL)
mbed_official 610:813dcc80987e 52 };
mbed_official 610:813dcc80987e 53
mbed_official 610:813dcc80987e 54 // Enable GPIO clock and return GPIO base address
mbed_official 610:813dcc80987e 55 uint32_t Set_GPIO_Clock(uint32_t port_idx)
mbed_official 610:813dcc80987e 56 {
mbed_official 610:813dcc80987e 57 uint32_t gpio_add = 0;
mbed_official 610:813dcc80987e 58 switch (port_idx) {
mbed_official 610:813dcc80987e 59 case PortA:
mbed_official 610:813dcc80987e 60 gpio_add = GPIOA_BASE;
mbed_official 610:813dcc80987e 61 __HAL_RCC_GPIOA_CLK_ENABLE();
mbed_official 610:813dcc80987e 62 break;
mbed_official 610:813dcc80987e 63 case PortB:
mbed_official 610:813dcc80987e 64 gpio_add = GPIOB_BASE;
mbed_official 610:813dcc80987e 65 __HAL_RCC_GPIOB_CLK_ENABLE();
mbed_official 610:813dcc80987e 66 break;
mbed_official 610:813dcc80987e 67 case PortC:
mbed_official 610:813dcc80987e 68 gpio_add = GPIOC_BASE;
mbed_official 610:813dcc80987e 69 __HAL_RCC_GPIOC_CLK_ENABLE();
mbed_official 610:813dcc80987e 70 break;
mbed_official 610:813dcc80987e 71 case PortD:
mbed_official 610:813dcc80987e 72 gpio_add = GPIOD_BASE;
mbed_official 610:813dcc80987e 73 __HAL_RCC_GPIOD_CLK_ENABLE();
mbed_official 610:813dcc80987e 74 break;
mbed_official 610:813dcc80987e 75 case PortE:
mbed_official 610:813dcc80987e 76 gpio_add = GPIOE_BASE;
mbed_official 610:813dcc80987e 77 __HAL_RCC_GPIOE_CLK_ENABLE();
mbed_official 610:813dcc80987e 78 break;
mbed_official 610:813dcc80987e 79 case PortH:
mbed_official 610:813dcc80987e 80 gpio_add = GPIOH_BASE;
mbed_official 610:813dcc80987e 81 __HAL_RCC_GPIOH_CLK_ENABLE();
mbed_official 610:813dcc80987e 82 break;
mbed_official 610:813dcc80987e 83 default:
mbed_official 610:813dcc80987e 84 error("Pinmap error: wrong port number\n");
mbed_official 610:813dcc80987e 85 break;
mbed_official 610:813dcc80987e 86 }
mbed_official 610:813dcc80987e 87 return gpio_add;
mbed_official 610:813dcc80987e 88 }
mbed_official 610:813dcc80987e 89
mbed_official 610:813dcc80987e 90 /**
mbed_official 610:813dcc80987e 91 * Configure pin (mode, speed, output type and pull-up/pull-down)
mbed_official 610:813dcc80987e 92 */
mbed_official 610:813dcc80987e 93 void pin_function(PinName pin, int data)
mbed_official 610:813dcc80987e 94 {
mbed_official 610:813dcc80987e 95 MBED_ASSERT(pin != (PinName)NC);
mbed_official 610:813dcc80987e 96 // Get the pin informations
mbed_official 610:813dcc80987e 97 uint32_t mode = STM_PIN_MODE(data);
mbed_official 610:813dcc80987e 98 uint32_t pupd = STM_PIN_PUPD(data);
mbed_official 610:813dcc80987e 99 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 610:813dcc80987e 100
mbed_official 610:813dcc80987e 101 uint32_t port_index = STM_PORT(pin);
mbed_official 610:813dcc80987e 102 uint32_t pin_index = STM_PIN(pin);
mbed_official 610:813dcc80987e 103
mbed_official 610:813dcc80987e 104 // Enable GPIO clock
mbed_official 610:813dcc80987e 105 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 610:813dcc80987e 106 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 610:813dcc80987e 107
mbed_official 610:813dcc80987e 108 // Configure GPIO
mbed_official 610:813dcc80987e 109 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 610:813dcc80987e 110 GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
mbed_official 610:813dcc80987e 111 GPIO_InitStructure.Mode = gpio_mode[mode];
mbed_official 610:813dcc80987e 112 GPIO_InitStructure.Pull = pupd;
mbed_official 610:813dcc80987e 113 GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
mbed_official 610:813dcc80987e 114 GPIO_InitStructure.Alternate = afnum;
mbed_official 610:813dcc80987e 115 HAL_GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 610:813dcc80987e 116
mbed_official 610:813dcc80987e 117 // [TODO] Disconnect JTAG-DP + SW-DP signals.
mbed_official 610:813dcc80987e 118 // Warning: Need to reconnect under reset
mbed_official 610:813dcc80987e 119 //if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 610:813dcc80987e 120 //
mbed_official 610:813dcc80987e 121 //}
mbed_official 610:813dcc80987e 122 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
mbed_official 610:813dcc80987e 123 //
mbed_official 610:813dcc80987e 124 //}
mbed_official 610:813dcc80987e 125 }
mbed_official 610:813dcc80987e 126
mbed_official 610:813dcc80987e 127 /**
mbed_official 610:813dcc80987e 128 * Configure pin pull-up/pull-down
mbed_official 610:813dcc80987e 129 */
mbed_official 610:813dcc80987e 130 void pin_mode(PinName pin, PinMode mode)
mbed_official 610:813dcc80987e 131 {
mbed_official 610:813dcc80987e 132 MBED_ASSERT(pin != (PinName)NC);
mbed_official 610:813dcc80987e 133 uint32_t port_index = STM_PORT(pin);
mbed_official 610:813dcc80987e 134 uint32_t pin_index = STM_PIN(pin);
mbed_official 610:813dcc80987e 135
mbed_official 610:813dcc80987e 136 // Enable GPIO clock
mbed_official 610:813dcc80987e 137 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 610:813dcc80987e 138 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 610:813dcc80987e 139
mbed_official 610:813dcc80987e 140 // Configure pull-up/pull-down resistors
mbed_official 610:813dcc80987e 141 uint32_t pupd = (uint32_t)mode;
mbed_official 610:813dcc80987e 142 if (pupd > 2) {
mbed_official 610:813dcc80987e 143 pupd = 0; // Open-drain = No pull-up/No pull-down
mbed_official 610:813dcc80987e 144 }
mbed_official 610:813dcc80987e 145 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
mbed_official 610:813dcc80987e 146 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
mbed_official 610:813dcc80987e 147 }