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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_STM32F0/pinmap.c@469:fc4922e0c183, 2015-02-09 (annotated)

Committer:
mbed_official
Date:
Mon Feb 09 09:30:07 2015 +0000
Revision:
469:fc4922e0c183
Parent:
targets/hal/TARGET_STM/TARGET_NUCLEO_F070RB/pinmap.c@441:d2c15dda23c1
Child:
630:825f75ca301e
Synchronized with git revision 06e2b3c8802cb4f78e9958ba9923755bd458e8b7



Full URL: https://github.com/mbedmicro/mbed/commit/06e2b3c8802cb4f78e9958ba9923755bd458e8b7/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 441:d2c15dda23c1 1 /* mbed Microcontroller Library
mbed_official 441:d2c15dda23c1 2 *******************************************************************************
mbed_official 441:d2c15dda23c1 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 441:d2c15dda23c1 4 * All rights reserved.
mbed_official 441:d2c15dda23c1 5 *
mbed_official 441:d2c15dda23c1 6 * Redistribution and use in source and binary forms, with or without
mbed_official 441:d2c15dda23c1 7 * modification, are permitted provided that the following conditions are met:
mbed_official 441:d2c15dda23c1 8 *
mbed_official 441:d2c15dda23c1 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 441:d2c15dda23c1 10 * this list of conditions and the following disclaimer.
mbed_official 441:d2c15dda23c1 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 441:d2c15dda23c1 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 441:d2c15dda23c1 13 * and/or other materials provided with the distribution.
mbed_official 441:d2c15dda23c1 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 441:d2c15dda23c1 15 * may be used to endorse or promote products derived from this software
mbed_official 441:d2c15dda23c1 16 * without specific prior written permission.
mbed_official 441:d2c15dda23c1 17 *
mbed_official 441:d2c15dda23c1 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 441:d2c15dda23c1 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 441:d2c15dda23c1 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 441:d2c15dda23c1 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 441:d2c15dda23c1 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 441:d2c15dda23c1 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 441:d2c15dda23c1 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 441:d2c15dda23c1 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 441:d2c15dda23c1 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 441:d2c15dda23c1 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 441:d2c15dda23c1 28 *******************************************************************************
mbed_official 441:d2c15dda23c1 29 */
mbed_official 441:d2c15dda23c1 30 #include "mbed_assert.h"
mbed_official 441:d2c15dda23c1 31 #include "pinmap.h"
mbed_official 441:d2c15dda23c1 32 #include "PortNames.h"
mbed_official 441:d2c15dda23c1 33 #include "mbed_error.h"
mbed_official 441:d2c15dda23c1 34
mbed_official 441:d2c15dda23c1 35 // GPIO mode look-up table
mbed_official 441:d2c15dda23c1 36 static const uint32_t gpio_mode[13] = {
mbed_official 441:d2c15dda23c1 37 0x00000000, // 0 = GPIO_MODE_INPUT
mbed_official 441:d2c15dda23c1 38 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
mbed_official 441:d2c15dda23c1 39 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
mbed_official 441:d2c15dda23c1 40 0x00000002, // 3 = GPIO_MODE_AF_PP
mbed_official 441:d2c15dda23c1 41 0x00000012, // 4 = GPIO_MODE_AF_OD
mbed_official 441:d2c15dda23c1 42 0x00000003, // 5 = GPIO_MODE_ANALOG
mbed_official 441:d2c15dda23c1 43 0x10110000, // 6 = GPIO_MODE_IT_RISING
mbed_official 441:d2c15dda23c1 44 0x10210000, // 7 = GPIO_MODE_IT_FALLING
mbed_official 441:d2c15dda23c1 45 0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING
mbed_official 441:d2c15dda23c1 46 0x10120000, // 9 = GPIO_MODE_EVT_RISING
mbed_official 441:d2c15dda23c1 47 0x10220000, // 10 = GPIO_MODE_EVT_FALLING
mbed_official 441:d2c15dda23c1 48 0x10320000, // 11 = GPIO_MODE_EVT_RISING_FALLING
mbed_official 441:d2c15dda23c1 49 0x10000000 // 12 = Reset IT and EVT (not in STM32Cube HAL)
mbed_official 441:d2c15dda23c1 50 };
mbed_official 441:d2c15dda23c1 51
mbed_official 441:d2c15dda23c1 52 // Enable GPIO clock and return GPIO base address
mbed_official 441:d2c15dda23c1 53 uint32_t Set_GPIO_Clock(uint32_t port_idx)
mbed_official 441:d2c15dda23c1 54 {
mbed_official 441:d2c15dda23c1 55 uint32_t gpio_add = 0;
mbed_official 441:d2c15dda23c1 56 switch (port_idx) {
mbed_official 441:d2c15dda23c1 57 case PortA:
mbed_official 441:d2c15dda23c1 58 gpio_add = GPIOA_BASE;
mbed_official 441:d2c15dda23c1 59 __GPIOA_CLK_ENABLE();
mbed_official 441:d2c15dda23c1 60 break;
mbed_official 441:d2c15dda23c1 61 case PortB:
mbed_official 441:d2c15dda23c1 62 gpio_add = GPIOB_BASE;
mbed_official 441:d2c15dda23c1 63 __GPIOB_CLK_ENABLE();
mbed_official 441:d2c15dda23c1 64 break;
mbed_official 441:d2c15dda23c1 65 case PortC:
mbed_official 441:d2c15dda23c1 66 gpio_add = GPIOC_BASE;
mbed_official 441:d2c15dda23c1 67 __GPIOC_CLK_ENABLE();
mbed_official 441:d2c15dda23c1 68 break;
mbed_official 441:d2c15dda23c1 69 case PortD:
mbed_official 441:d2c15dda23c1 70 gpio_add = GPIOD_BASE;
mbed_official 441:d2c15dda23c1 71 __GPIOD_CLK_ENABLE();
mbed_official 441:d2c15dda23c1 72 break;
mbed_official 441:d2c15dda23c1 73 case PortF:
mbed_official 441:d2c15dda23c1 74 gpio_add = GPIOF_BASE;
mbed_official 441:d2c15dda23c1 75 __GPIOF_CLK_ENABLE();
mbed_official 441:d2c15dda23c1 76 break;
mbed_official 441:d2c15dda23c1 77 default:
mbed_official 441:d2c15dda23c1 78 error("Pinmap error: wrong port number.");
mbed_official 441:d2c15dda23c1 79 break;
mbed_official 441:d2c15dda23c1 80 }
mbed_official 441:d2c15dda23c1 81 return gpio_add;
mbed_official 441:d2c15dda23c1 82 }
mbed_official 441:d2c15dda23c1 83
mbed_official 441:d2c15dda23c1 84 /**
mbed_official 441:d2c15dda23c1 85 * Configure pin (mode, speed, output type and pull-up/pull-down)
mbed_official 441:d2c15dda23c1 86 */
mbed_official 441:d2c15dda23c1 87 void pin_function(PinName pin, int data)
mbed_official 441:d2c15dda23c1 88 {
mbed_official 441:d2c15dda23c1 89 MBED_ASSERT(pin != (PinName)NC);
mbed_official 441:d2c15dda23c1 90
mbed_official 441:d2c15dda23c1 91 // Get the pin informations
mbed_official 441:d2c15dda23c1 92 uint32_t mode = STM_PIN_MODE(data);
mbed_official 441:d2c15dda23c1 93 uint32_t pupd = STM_PIN_PUPD(data);
mbed_official 441:d2c15dda23c1 94 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 441:d2c15dda23c1 95
mbed_official 441:d2c15dda23c1 96 uint32_t port_index = STM_PORT(pin);
mbed_official 441:d2c15dda23c1 97 uint32_t pin_index = STM_PIN(pin);
mbed_official 441:d2c15dda23c1 98
mbed_official 441:d2c15dda23c1 99 // Enable GPIO clock
mbed_official 441:d2c15dda23c1 100 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 441:d2c15dda23c1 101 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 441:d2c15dda23c1 102
mbed_official 441:d2c15dda23c1 103 // Configure GPIO
mbed_official 441:d2c15dda23c1 104 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 441:d2c15dda23c1 105 GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
mbed_official 441:d2c15dda23c1 106 GPIO_InitStructure.Mode = gpio_mode[mode];
mbed_official 441:d2c15dda23c1 107 GPIO_InitStructure.Pull = pupd;
mbed_official 441:d2c15dda23c1 108 GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
mbed_official 441:d2c15dda23c1 109 GPIO_InitStructure.Alternate = afnum;
mbed_official 441:d2c15dda23c1 110 HAL_GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 441:d2c15dda23c1 111
mbed_official 441:d2c15dda23c1 112 // [TODO] Disconnect SWDIO and SWCLK signals ?
mbed_official 441:d2c15dda23c1 113 // Warning: For debugging it is necessary to reconnect under reset if this is done.
mbed_official 441:d2c15dda23c1 114 //if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 441:d2c15dda23c1 115 //
mbed_official 441:d2c15dda23c1 116 //}
mbed_official 441:d2c15dda23c1 117 }
mbed_official 441:d2c15dda23c1 118
mbed_official 441:d2c15dda23c1 119 /**
mbed_official 441:d2c15dda23c1 120 * Configure pin pull-up/pull-down
mbed_official 441:d2c15dda23c1 121 */
mbed_official 441:d2c15dda23c1 122 void pin_mode(PinName pin, PinMode mode)
mbed_official 441:d2c15dda23c1 123 {
mbed_official 441:d2c15dda23c1 124 MBED_ASSERT(pin != (PinName)NC);
mbed_official 441:d2c15dda23c1 125
mbed_official 441:d2c15dda23c1 126 uint32_t port_index = STM_PORT(pin);
mbed_official 441:d2c15dda23c1 127 uint32_t pin_index = STM_PIN(pin);
mbed_official 441:d2c15dda23c1 128
mbed_official 441:d2c15dda23c1 129 // Enable GPIO clock
mbed_official 441:d2c15dda23c1 130 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 441:d2c15dda23c1 131 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 441:d2c15dda23c1 132
mbed_official 441:d2c15dda23c1 133 // Configure pull-up/pull-down resistors
mbed_official 441:d2c15dda23c1 134 uint32_t pupd = (uint32_t)mode;
mbed_official 441:d2c15dda23c1 135 if (pupd > 2) pupd = 0; // Open-drain = No pull-up/No pull-down
mbed_official 441:d2c15dda23c1 136 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
mbed_official 441:d2c15dda23c1 137 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
mbed_official 441:d2c15dda23c1 138
mbed_official 441:d2c15dda23c1 139 }