Aravind Vadali / mbed-src-AV

mbed.h library with any bug fixes AV finds.

Dependents:   micromouse4_encoder_testing PID_Test Lab1_Test WorkingPID ... more

targets/hal/TARGET_STM/TARGET_STM32L1/pinmap.c@0:ba7650f404af, 2015-11-02 (annotated)

Committer:
aravindsv
Date:
Mon Nov 02 02:26:59 2015 +0000
Revision:
0:ba7650f404af
Reduced HSE_STARTUP_TIMEOUT to 500 ms, fixed some compiler warnings

Who changed what in which revision?

UserRevisionLine numberNew contents of line
aravindsv 0:ba7650f404af 1 /* mbed Microcontroller Library
aravindsv 0:ba7650f404af 2 *******************************************************************************
aravindsv 0:ba7650f404af 3 * Copyright (c) 2014, STMicroelectronics
aravindsv 0:ba7650f404af 4 * All rights reserved.
aravindsv 0:ba7650f404af 5 *
aravindsv 0:ba7650f404af 6 * Redistribution and use in source and binary forms, with or without
aravindsv 0:ba7650f404af 7 * modification, are permitted provided that the following conditions are met:
aravindsv 0:ba7650f404af 8 *
aravindsv 0:ba7650f404af 9 * 1. Redistributions of source code must retain the above copyright notice,
aravindsv 0:ba7650f404af 10 * this list of conditions and the following disclaimer.
aravindsv 0:ba7650f404af 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
aravindsv 0:ba7650f404af 12 * this list of conditions and the following disclaimer in the documentation
aravindsv 0:ba7650f404af 13 * and/or other materials provided with the distribution.
aravindsv 0:ba7650f404af 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
aravindsv 0:ba7650f404af 15 * may be used to endorse or promote products derived from this software
aravindsv 0:ba7650f404af 16 * without specific prior written permission.
aravindsv 0:ba7650f404af 17 *
aravindsv 0:ba7650f404af 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
aravindsv 0:ba7650f404af 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
aravindsv 0:ba7650f404af 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
aravindsv 0:ba7650f404af 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
aravindsv 0:ba7650f404af 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
aravindsv 0:ba7650f404af 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
aravindsv 0:ba7650f404af 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
aravindsv 0:ba7650f404af 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
aravindsv 0:ba7650f404af 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
aravindsv 0:ba7650f404af 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
aravindsv 0:ba7650f404af 28 *******************************************************************************
aravindsv 0:ba7650f404af 29 */
aravindsv 0:ba7650f404af 30 #include "mbed_assert.h"
aravindsv 0:ba7650f404af 31 #include "pinmap.h"
aravindsv 0:ba7650f404af 32 #include "PortNames.h"
aravindsv 0:ba7650f404af 33 #include "mbed_error.h"
aravindsv 0:ba7650f404af 34
aravindsv 0:ba7650f404af 35 // GPIO mode look-up table
aravindsv 0:ba7650f404af 36 static const uint32_t gpio_mode[13] = {
aravindsv 0:ba7650f404af 37 0x00000000, // 0 = GPIO_MODE_INPUT
aravindsv 0:ba7650f404af 38 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
aravindsv 0:ba7650f404af 39 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
aravindsv 0:ba7650f404af 40 0x00000002, // 3 = GPIO_MODE_AF_PP
aravindsv 0:ba7650f404af 41 0x00000012, // 4 = GPIO_MODE_AF_OD
aravindsv 0:ba7650f404af 42 0x00000003, // 5 = GPIO_MODE_ANALOG
aravindsv 0:ba7650f404af 43 0x10110000, // 6 = GPIO_MODE_IT_RISING
aravindsv 0:ba7650f404af 44 0x10210000, // 7 = GPIO_MODE_IT_FALLING
aravindsv 0:ba7650f404af 45 0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING
aravindsv 0:ba7650f404af 46 0x10120000, // 9 = GPIO_MODE_EVT_RISING
aravindsv 0:ba7650f404af 47 0x10220000, // 10 = GPIO_MODE_EVT_FALLING
aravindsv 0:ba7650f404af 48 0x10320000, // 11 = GPIO_MODE_EVT_RISING_FALLING
aravindsv 0:ba7650f404af 49 0x10000000 // 12 = Reset IT and EVT (not in STM32Cube HAL)
aravindsv 0:ba7650f404af 50 };
aravindsv 0:ba7650f404af 51
aravindsv 0:ba7650f404af 52 // Enable GPIO clock and return GPIO base address
aravindsv 0:ba7650f404af 53 uint32_t Set_GPIO_Clock(uint32_t port_idx)
aravindsv 0:ba7650f404af 54 {
aravindsv 0:ba7650f404af 55 uint32_t gpio_add = 0;
aravindsv 0:ba7650f404af 56 switch (port_idx) {
aravindsv 0:ba7650f404af 57 case PortA:
aravindsv 0:ba7650f404af 58 gpio_add = GPIOA_BASE;
aravindsv 0:ba7650f404af 59 __GPIOA_CLK_ENABLE();
aravindsv 0:ba7650f404af 60 break;
aravindsv 0:ba7650f404af 61 case PortB:
aravindsv 0:ba7650f404af 62 gpio_add = GPIOB_BASE;
aravindsv 0:ba7650f404af 63 __GPIOB_CLK_ENABLE();
aravindsv 0:ba7650f404af 64 break;
aravindsv 0:ba7650f404af 65 case PortC:
aravindsv 0:ba7650f404af 66 gpio_add = GPIOC_BASE;
aravindsv 0:ba7650f404af 67 __GPIOC_CLK_ENABLE();
aravindsv 0:ba7650f404af 68 break;
aravindsv 0:ba7650f404af 69 case PortD:
aravindsv 0:ba7650f404af 70 gpio_add = GPIOD_BASE;
aravindsv 0:ba7650f404af 71 __GPIOD_CLK_ENABLE();
aravindsv 0:ba7650f404af 72 break;
aravindsv 0:ba7650f404af 73 case PortH:
aravindsv 0:ba7650f404af 74 gpio_add = GPIOH_BASE;
aravindsv 0:ba7650f404af 75 __GPIOH_CLK_ENABLE();
aravindsv 0:ba7650f404af 76 break;
aravindsv 0:ba7650f404af 77 default:
aravindsv 0:ba7650f404af 78 error("Pinmap error: wrong port number.");
aravindsv 0:ba7650f404af 79 break;
aravindsv 0:ba7650f404af 80 }
aravindsv 0:ba7650f404af 81 return gpio_add;
aravindsv 0:ba7650f404af 82 }
aravindsv 0:ba7650f404af 83
aravindsv 0:ba7650f404af 84 /**
aravindsv 0:ba7650f404af 85 * Configure pin (mode, speed, output type and pull-up/pull-down)
aravindsv 0:ba7650f404af 86 */
aravindsv 0:ba7650f404af 87 void pin_function(PinName pin, int data)
aravindsv 0:ba7650f404af 88 {
aravindsv 0:ba7650f404af 89 MBED_ASSERT(pin != (PinName)NC);
aravindsv 0:ba7650f404af 90 // Get the pin informations
aravindsv 0:ba7650f404af 91 uint32_t mode = STM_PIN_MODE(data);
aravindsv 0:ba7650f404af 92 uint32_t pupd = STM_PIN_PUPD(data);
aravindsv 0:ba7650f404af 93 uint32_t afnum = STM_PIN_AFNUM(data);
aravindsv 0:ba7650f404af 94
aravindsv 0:ba7650f404af 95 uint32_t port_index = STM_PORT(pin);
aravindsv 0:ba7650f404af 96 uint32_t pin_index = STM_PIN(pin);
aravindsv 0:ba7650f404af 97
aravindsv 0:ba7650f404af 98 // Enable GPIO clock
aravindsv 0:ba7650f404af 99 uint32_t gpio_add = Set_GPIO_Clock(port_index);
aravindsv 0:ba7650f404af 100 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
aravindsv 0:ba7650f404af 101
aravindsv 0:ba7650f404af 102 // Configure GPIO
aravindsv 0:ba7650f404af 103 GPIO_InitTypeDef GPIO_InitStructure;
aravindsv 0:ba7650f404af 104 GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
aravindsv 0:ba7650f404af 105 GPIO_InitStructure.Mode = gpio_mode[mode];
aravindsv 0:ba7650f404af 106 GPIO_InitStructure.Pull = pupd;
aravindsv 0:ba7650f404af 107 GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
aravindsv 0:ba7650f404af 108 GPIO_InitStructure.Alternate = afnum;
aravindsv 0:ba7650f404af 109 HAL_GPIO_Init(gpio, &GPIO_InitStructure);
aravindsv 0:ba7650f404af 110
aravindsv 0:ba7650f404af 111 // [TODO] Disconnect JTAG-DP + SW-DP signals.
aravindsv 0:ba7650f404af 112 // Warning: Need to reconnect under reset
aravindsv 0:ba7650f404af 113 //if ((pin == PA_13) || (pin == PA_14)) {
aravindsv 0:ba7650f404af 114 //
aravindsv 0:ba7650f404af 115 //}
aravindsv 0:ba7650f404af 116 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
aravindsv 0:ba7650f404af 117 //
aravindsv 0:ba7650f404af 118 //}
aravindsv 0:ba7650f404af 119 }
aravindsv 0:ba7650f404af 120
aravindsv 0:ba7650f404af 121 /**
aravindsv 0:ba7650f404af 122 * Configure pin pull-up/pull-down
aravindsv 0:ba7650f404af 123 */
aravindsv 0:ba7650f404af 124 void pin_mode(PinName pin, PinMode mode)
aravindsv 0:ba7650f404af 125 {
aravindsv 0:ba7650f404af 126 MBED_ASSERT(pin != (PinName)NC);
aravindsv 0:ba7650f404af 127 uint32_t port_index = STM_PORT(pin);
aravindsv 0:ba7650f404af 128 uint32_t pin_index = STM_PIN(pin);
aravindsv 0:ba7650f404af 129
aravindsv 0:ba7650f404af 130 // Enable GPIO clock
aravindsv 0:ba7650f404af 131 uint32_t gpio_add = Set_GPIO_Clock(port_index);
aravindsv 0:ba7650f404af 132 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
aravindsv 0:ba7650f404af 133
aravindsv 0:ba7650f404af 134 // Configure pull-up/pull-down resistors
aravindsv 0:ba7650f404af 135 uint32_t pupd = (uint32_t)mode;
aravindsv 0:ba7650f404af 136 if (pupd > 2)
aravindsv 0:ba7650f404af 137 {
aravindsv 0:ba7650f404af 138 pupd = 0; // Open-drain = No pull-up/No pull-down
aravindsv 0:ba7650f404af 139 }
aravindsv 0:ba7650f404af 140 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
aravindsv 0:ba7650f404af 141 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
aravindsv 0:ba7650f404af 142
aravindsv 0:ba7650f404af 143 }