Stuart Northfield / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_F334C8/pinmap.c@381:5460fc57b6e4, 2014-11-03 (annotated)

Committer:
mbed_official
Date:
Mon Nov 03 10:30:07 2014 +0000
Revision:
381:5460fc57b6e4
Synchronized with git revision 02478cd1f27fc7b9643486472635eb515b2bca81



Full URL: https://github.com/mbedmicro/mbed/commit/02478cd1f27fc7b9643486472635eb515b2bca81/



Target: LPC1549 - Fix serial interrupt issues (issue report #616)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 381:5460fc57b6e4 1 /* mbed Microcontroller Library
mbed_official 381:5460fc57b6e4 2 *******************************************************************************
mbed_official 381:5460fc57b6e4 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 381:5460fc57b6e4 4 * All rights reserved.
mbed_official 381:5460fc57b6e4 5 *
mbed_official 381:5460fc57b6e4 6 * Redistribution and use in source and binary forms, with or without
mbed_official 381:5460fc57b6e4 7 * modification, are permitted provided that the following conditions are met:
mbed_official 381:5460fc57b6e4 8 *
mbed_official 381:5460fc57b6e4 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 381:5460fc57b6e4 10 * this list of conditions and the following disclaimer.
mbed_official 381:5460fc57b6e4 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 381:5460fc57b6e4 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 381:5460fc57b6e4 13 * and/or other materials provided with the distribution.
mbed_official 381:5460fc57b6e4 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 381:5460fc57b6e4 15 * may be used to endorse or promote products derived from this software
mbed_official 381:5460fc57b6e4 16 * without specific prior written permission.
mbed_official 381:5460fc57b6e4 17 *
mbed_official 381:5460fc57b6e4 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 381:5460fc57b6e4 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 381:5460fc57b6e4 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 381:5460fc57b6e4 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 381:5460fc57b6e4 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 381:5460fc57b6e4 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 381:5460fc57b6e4 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 381:5460fc57b6e4 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 381:5460fc57b6e4 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 381:5460fc57b6e4 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 381:5460fc57b6e4 28 *******************************************************************************
mbed_official 381:5460fc57b6e4 29 */
mbed_official 381:5460fc57b6e4 30 #include "mbed_assert.h"
mbed_official 381:5460fc57b6e4 31 #include "pinmap.h"
mbed_official 381:5460fc57b6e4 32 #include "PortNames.h"
mbed_official 381:5460fc57b6e4 33 #include "mbed_error.h"
mbed_official 381:5460fc57b6e4 34
mbed_official 381:5460fc57b6e4 35 // GPIO mode look-up table
mbed_official 381:5460fc57b6e4 36 static const uint32_t gpio_mode[13] = {
mbed_official 381:5460fc57b6e4 37 0x00000000, // 0 = GPIO_MODE_INPUT
mbed_official 381:5460fc57b6e4 38 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
mbed_official 381:5460fc57b6e4 39 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
mbed_official 381:5460fc57b6e4 40 0x00000002, // 3 = GPIO_MODE_AF_PP
mbed_official 381:5460fc57b6e4 41 0x00000012, // 4 = GPIO_MODE_AF_OD
mbed_official 381:5460fc57b6e4 42 0x00000003, // 5 = GPIO_MODE_ANALOG
mbed_official 381:5460fc57b6e4 43 0x10110000, // 6 = GPIO_MODE_IT_RISING
mbed_official 381:5460fc57b6e4 44 0x10210000, // 7 = GPIO_MODE_IT_FALLING
mbed_official 381:5460fc57b6e4 45 0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING
mbed_official 381:5460fc57b6e4 46 0x10120000, // 9 = GPIO_MODE_EVT_RISING
mbed_official 381:5460fc57b6e4 47 0x10220000, // 10 = GPIO_MODE_EVT_FALLING
mbed_official 381:5460fc57b6e4 48 0x10320000, // 11 = GPIO_MODE_EVT_RISING_FALLING
mbed_official 381:5460fc57b6e4 49 0x10000000 // 12 = Reset IT and EVT (not in STM32Cube HAL)
mbed_official 381:5460fc57b6e4 50 };
mbed_official 381:5460fc57b6e4 51
mbed_official 381:5460fc57b6e4 52 // Enable GPIO clock and return GPIO base address
mbed_official 381:5460fc57b6e4 53 uint32_t Set_GPIO_Clock(uint32_t port_idx)
mbed_official 381:5460fc57b6e4 54 {
mbed_official 381:5460fc57b6e4 55 uint32_t gpio_add = 0;
mbed_official 381:5460fc57b6e4 56 switch (port_idx) {
mbed_official 381:5460fc57b6e4 57 case PortA:
mbed_official 381:5460fc57b6e4 58 gpio_add = GPIOA_BASE;
mbed_official 381:5460fc57b6e4 59 __GPIOA_CLK_ENABLE();
mbed_official 381:5460fc57b6e4 60 break;
mbed_official 381:5460fc57b6e4 61 case PortB:
mbed_official 381:5460fc57b6e4 62 gpio_add = GPIOB_BASE;
mbed_official 381:5460fc57b6e4 63 __GPIOB_CLK_ENABLE();
mbed_official 381:5460fc57b6e4 64 break;
mbed_official 381:5460fc57b6e4 65 case PortC:
mbed_official 381:5460fc57b6e4 66 gpio_add = GPIOC_BASE;
mbed_official 381:5460fc57b6e4 67 __GPIOC_CLK_ENABLE();
mbed_official 381:5460fc57b6e4 68 break;
mbed_official 381:5460fc57b6e4 69 case PortD:
mbed_official 381:5460fc57b6e4 70 gpio_add = GPIOD_BASE;
mbed_official 381:5460fc57b6e4 71 __GPIOD_CLK_ENABLE();
mbed_official 381:5460fc57b6e4 72 break;
mbed_official 381:5460fc57b6e4 73 case PortF:
mbed_official 381:5460fc57b6e4 74 gpio_add = GPIOF_BASE;
mbed_official 381:5460fc57b6e4 75 __GPIOF_CLK_ENABLE();
mbed_official 381:5460fc57b6e4 76 break;
mbed_official 381:5460fc57b6e4 77 default:
mbed_official 381:5460fc57b6e4 78 error("Pinmap error: wrong port number.");
mbed_official 381:5460fc57b6e4 79 break;
mbed_official 381:5460fc57b6e4 80 }
mbed_official 381:5460fc57b6e4 81 return gpio_add;
mbed_official 381:5460fc57b6e4 82 }
mbed_official 381:5460fc57b6e4 83
mbed_official 381:5460fc57b6e4 84 /**
mbed_official 381:5460fc57b6e4 85 * Configure pin (mode, speed, output type and pull-up/pull-down)
mbed_official 381:5460fc57b6e4 86 */
mbed_official 381:5460fc57b6e4 87 void pin_function(PinName pin, int data)
mbed_official 381:5460fc57b6e4 88 {
mbed_official 381:5460fc57b6e4 89 MBED_ASSERT(pin != (PinName)NC);
mbed_official 381:5460fc57b6e4 90 // Get the pin informations
mbed_official 381:5460fc57b6e4 91 uint32_t mode = STM_PIN_MODE(data);
mbed_official 381:5460fc57b6e4 92 uint32_t pupd = STM_PIN_PUPD(data);
mbed_official 381:5460fc57b6e4 93 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 381:5460fc57b6e4 94
mbed_official 381:5460fc57b6e4 95 uint32_t port_index = STM_PORT(pin);
mbed_official 381:5460fc57b6e4 96 uint32_t pin_index = STM_PIN(pin);
mbed_official 381:5460fc57b6e4 97
mbed_official 381:5460fc57b6e4 98 // Enable GPIO clock
mbed_official 381:5460fc57b6e4 99 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 381:5460fc57b6e4 100 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 381:5460fc57b6e4 101
mbed_official 381:5460fc57b6e4 102 // Configure GPIO
mbed_official 381:5460fc57b6e4 103 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 381:5460fc57b6e4 104 GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
mbed_official 381:5460fc57b6e4 105 GPIO_InitStructure.Mode = gpio_mode[mode];
mbed_official 381:5460fc57b6e4 106 GPIO_InitStructure.Pull = pupd;
mbed_official 381:5460fc57b6e4 107 GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
mbed_official 381:5460fc57b6e4 108 GPIO_InitStructure.Alternate = afnum;
mbed_official 381:5460fc57b6e4 109 HAL_GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 381:5460fc57b6e4 110
mbed_official 381:5460fc57b6e4 111 // [TODO] Disconnect JTAG-DP + SW-DP signals.
mbed_official 381:5460fc57b6e4 112 // Warning: Need to reconnect under reset
mbed_official 381:5460fc57b6e4 113 //if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 381:5460fc57b6e4 114 //
mbed_official 381:5460fc57b6e4 115 //}
mbed_official 381:5460fc57b6e4 116 }
mbed_official 381:5460fc57b6e4 117
mbed_official 381:5460fc57b6e4 118 /**
mbed_official 381:5460fc57b6e4 119 * Configure pin pull-up/pull-down
mbed_official 381:5460fc57b6e4 120 */
mbed_official 381:5460fc57b6e4 121 void pin_mode(PinName pin, PinMode mode)
mbed_official 381:5460fc57b6e4 122 {
mbed_official 381:5460fc57b6e4 123 MBED_ASSERT(pin != (PinName)NC);
mbed_official 381:5460fc57b6e4 124 uint32_t port_index = STM_PORT(pin);
mbed_official 381:5460fc57b6e4 125 uint32_t pin_index = STM_PIN(pin);
mbed_official 381:5460fc57b6e4 126
mbed_official 381:5460fc57b6e4 127 // Enable GPIO clock
mbed_official 381:5460fc57b6e4 128 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 381:5460fc57b6e4 129 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 381:5460fc57b6e4 130
mbed_official 381:5460fc57b6e4 131 // Configure pull-up/pull-down resistors
mbed_official 381:5460fc57b6e4 132 uint32_t pupd = (uint32_t)mode;
mbed_official 381:5460fc57b6e4 133 if (pupd > 2) {
mbed_official 381:5460fc57b6e4 134 pupd = 0; // Open-drain = No pull-up/No pull-down
mbed_official 381:5460fc57b6e4 135 }
mbed_official 381:5460fc57b6e4 136 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
mbed_official 381:5460fc57b6e4 137 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
mbed_official 381:5460fc57b6e4 138
mbed_official 381:5460fc57b6e4 139 }