tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32F3/pinmap.c

   1 /* mbed Microcontroller Library
   2  *******************************************************************************
   3  * Copyright (c) 2014, STMicroelectronics
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright notice,
  10  *    this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright notice,
  12  *    this list of conditions and the following disclaimer in the documentation
  13  *    and/or other materials provided with the distribution.
  14  * 3. Neither the name of STMicroelectronics nor the names of its contributors
  15  *    may be used to endorse or promote products derived from this software
  16  *    without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  21  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  25  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  27  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  *******************************************************************************
  29  */
  30 #include "mbed_assert.h"
  31 #include "pinmap.h"
  32 #include "PortNames.h"
  33 #include "mbed_error.h"
  34
  35 // GPIO mode look-up table
  36 // Warning: the elements order must be the same as the one defined in PinNames.h
  37 static const uint32_t gpio_mode[13] = {
  38     GPIO_MODE_INPUT,              //  0 = STM_MODE_INPUT
  39     GPIO_MODE_OUTPUT_PP,          //  1 = STM_MODE_OUTPUT_PP
  40     GPIO_MODE_OUTPUT_OD,          //  2 = STM_MODE_OUTPUT_OD
  41     GPIO_MODE_AF_PP,              //  3 = STM_MODE_AF_PP
  42     GPIO_MODE_AF_OD,              //  4 = STM_MODE_AF_OD
  43     GPIO_MODE_ANALOG,             //  5 = STM_MODE_ANALOG
  44     GPIO_MODE_IT_RISING,          //  6 = STM_MODE_IT_RISING
  45     GPIO_MODE_IT_FALLING,         //  7 = STM_MODE_IT_FALLING
  46     GPIO_MODE_IT_RISING_FALLING,  //  8 = STM_MODE_IT_RISING_FALLING
  47     GPIO_MODE_EVT_RISING,         //  9 = STM_MODE_EVT_RISING
  48     GPIO_MODE_EVT_FALLING,        // 10 = STM_MODE_EVT_FALLING
  49     GPIO_MODE_EVT_RISING_FALLING, // 11 = STM_MODE_EVT_RISING_FALLING
  50     0x10000000                    // 12 = STM_MODE_IT_EVT_RESET (not in STM32Cube HAL)
  51 };
  52
  53 // Enable GPIO clock and return GPIO base address
  54 uint32_t Set_GPIO_Clock(uint32_t port_idx)
  55 {
  56     uint32_t gpio_add = 0;
  57     switch (port_idx) {
  58         case PortA:
  59             gpio_add = GPIOA_BASE;
  60             __GPIOA_CLK_ENABLE();
  61             break;
  62         case PortB:
  63             gpio_add = GPIOB_BASE;
  64             __GPIOB_CLK_ENABLE();
  65             break;
  66         case PortC:
  67             gpio_add = GPIOC_BASE;
  68             __GPIOC_CLK_ENABLE();
  69             break;
  70         case PortD:
  71             gpio_add = GPIOD_BASE;
  72             __GPIOD_CLK_ENABLE();
  73             break;
  74 #if defined(GPIOE_BASE)
  75         case PortE:
  76             gpio_add = GPIOE_BASE;
  77             __GPIOE_CLK_ENABLE();
  78             break;
  79 #endif
  80         case PortF:
  81             gpio_add = GPIOF_BASE;
  82             __GPIOF_CLK_ENABLE();
  83             break;
  84         default:
  85             error("Pinmap error: wrong port number.");
  86             break;
  87     }
  88     return gpio_add;
  89 }
  90
  91 /**
  92  * Configure pin (mode, speed, output type and pull-up/pull-down)
  93  */
  94 void pin_function(PinName pin, int data)
  95 {
  96     MBED_ASSERT(pin != (PinName)NC);
  97     // Get the pin informations
  98     uint32_t mode  = STM_PIN_MODE(data);
  99     uint32_t pupd  = STM_PIN_PUPD(data);
 100     uint32_t afnum = STM_PIN_AFNUM(data);
 101
 102     uint32_t port_index = STM_PORT(pin);
 103     uint32_t pin_index  = STM_PIN(pin);
 104
 105     // Enable GPIO clock
 106     uint32_t gpio_add = Set_GPIO_Clock(port_index);
 107     GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
 108
 109     // Configure GPIO
 110     GPIO_InitTypeDef GPIO_InitStructure;
 111     GPIO_InitStructure.Pin       = (uint32_t)(1 << pin_index);
 112     GPIO_InitStructure.Mode      = gpio_mode[mode];
 113     GPIO_InitStructure.Pull      = pupd;
 114     GPIO_InitStructure.Speed     = GPIO_SPEED_HIGH;
 115     GPIO_InitStructure.Alternate = afnum;
 116     HAL_GPIO_Init(gpio, &GPIO_InitStructure);
 117
 118     // [TODO] Disconnect JTAG-DP + SW-DP signals.
 119     // Warning: Need to reconnect under reset
 120     //if ((pin == PA_13) || (pin == PA_14)) {
 121     //
 122     //}
 123 }
 124
 125 /**
 126  * Configure pin pull-up/pull-down
 127  */
 128 void pin_mode(PinName pin, PinMode mode)
 129 {
 130     MBED_ASSERT(pin != (PinName)NC);
 131     uint32_t port_index = STM_PORT(pin);
 132     uint32_t pin_index  = STM_PIN(pin);
 133
 134     // Enable GPIO clock
 135     uint32_t gpio_add = Set_GPIO_Clock(port_index);
 136     GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
 137
 138     // Configure pull-up/pull-down resistors
 139     uint32_t pupd = (uint32_t)mode;
 140     if (pupd > 2) {
 141         pupd = 0; // Open-drain = No pull-up/No pull-down
 142     }
 143     gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
 144     gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
 145 }