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_STM32F3XX/pinmap.c@1:ebce2ad32f95, 2015-11-02 (annotated)

Committer:
aravindsv
Date:
Mon Nov 02 03:07:12 2015 +0000
Revision:
1:ebce2ad32f95
Parent:
0:ba7650f404af 
Changed the RCC timeout value to 500 ms, so total code startup time before program starts running is ~1s. Hopefully no side-effects from lower startup timeouts

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 // Enable GPIO clock and return GPIO base address
aravindsv 0:ba7650f404af 36 uint32_t Set_GPIO_Clock(uint32_t port_idx) {
aravindsv 0:ba7650f404af 37 uint32_t gpio_add;
aravindsv 0:ba7650f404af 38 switch (port_idx) {
aravindsv 0:ba7650f404af 39 case PortA:
aravindsv 0:ba7650f404af 40 gpio_add = GPIOA_BASE;
aravindsv 0:ba7650f404af 41 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
aravindsv 0:ba7650f404af 42 break;
aravindsv 0:ba7650f404af 43 case PortB:
aravindsv 0:ba7650f404af 44 gpio_add = GPIOB_BASE;
aravindsv 0:ba7650f404af 45 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
aravindsv 0:ba7650f404af 46 break;
aravindsv 0:ba7650f404af 47 case PortC:
aravindsv 0:ba7650f404af 48 gpio_add = GPIOC_BASE;
aravindsv 0:ba7650f404af 49 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
aravindsv 0:ba7650f404af 50 break;
aravindsv 0:ba7650f404af 51 case PortD:
aravindsv 0:ba7650f404af 52 gpio_add = GPIOD_BASE;
aravindsv 0:ba7650f404af 53 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, ENABLE);
aravindsv 0:ba7650f404af 54 break;
aravindsv 0:ba7650f404af 55 case PortE:
aravindsv 0:ba7650f404af 56 gpio_add = GPIOE_BASE;
aravindsv 0:ba7650f404af 57 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOE, ENABLE);
aravindsv 0:ba7650f404af 58 break;
aravindsv 0:ba7650f404af 59 case PortF:
aravindsv 0:ba7650f404af 60 gpio_add = GPIOF_BASE;
aravindsv 0:ba7650f404af 61 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE);
aravindsv 0:ba7650f404af 62 break;
aravindsv 0:ba7650f404af 63 default:
aravindsv 0:ba7650f404af 64 gpio_add = 0;
aravindsv 0:ba7650f404af 65 error("Port number is not correct.");
aravindsv 0:ba7650f404af 66 break;
aravindsv 0:ba7650f404af 67 }
aravindsv 0:ba7650f404af 68 return gpio_add;
aravindsv 0:ba7650f404af 69 }
aravindsv 0:ba7650f404af 70
aravindsv 0:ba7650f404af 71 /**
aravindsv 0:ba7650f404af 72 * Configure pin (mode, speed, output type and pull-up/pull-down)
aravindsv 0:ba7650f404af 73 */
aravindsv 0:ba7650f404af 74 void pin_function(PinName pin, int data) {
aravindsv 0:ba7650f404af 75 MBED_ASSERT(pin != (PinName)NC);
aravindsv 0:ba7650f404af 76
aravindsv 0:ba7650f404af 77 // Get the pin informations
aravindsv 0:ba7650f404af 78 uint32_t mode = STM_PIN_MODE(data);
aravindsv 0:ba7650f404af 79 uint32_t otype = STM_PIN_OTYPE(data);
aravindsv 0:ba7650f404af 80 uint32_t pupd = STM_PIN_PUPD(data);
aravindsv 0:ba7650f404af 81 uint32_t afnum = STM_PIN_AFNUM(data);
aravindsv 0:ba7650f404af 82
aravindsv 0:ba7650f404af 83 uint32_t port_index = STM_PORT(pin);
aravindsv 0:ba7650f404af 84 uint32_t pin_index = STM_PIN(pin);
aravindsv 0:ba7650f404af 85
aravindsv 0:ba7650f404af 86 // Enable GPIO clock
aravindsv 0:ba7650f404af 87 uint32_t gpio_add = Set_GPIO_Clock(port_index);
aravindsv 0:ba7650f404af 88 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
aravindsv 0:ba7650f404af 89
aravindsv 0:ba7650f404af 90 // Configure Alternate Function
aravindsv 0:ba7650f404af 91 // Warning: Must be done before the GPIO is initialized
aravindsv 0:ba7650f404af 92 if (afnum != 0xFF) {
aravindsv 0:ba7650f404af 93 GPIO_PinAFConfig(gpio, (uint16_t)pin_index, afnum);
aravindsv 0:ba7650f404af 94 }
aravindsv 0:ba7650f404af 95
aravindsv 0:ba7650f404af 96 // Configure GPIO
aravindsv 0:ba7650f404af 97 GPIO_InitTypeDef GPIO_InitStructure;
aravindsv 0:ba7650f404af 98 GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index);
aravindsv 0:ba7650f404af 99 GPIO_InitStructure.GPIO_Mode = (GPIOMode_TypeDef)mode;
aravindsv 0:ba7650f404af 100 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;
aravindsv 0:ba7650f404af 101 GPIO_InitStructure.GPIO_OType = (GPIOOType_TypeDef)otype;
aravindsv 0:ba7650f404af 102 GPIO_InitStructure.GPIO_PuPd = (GPIOPuPd_TypeDef)pupd;
aravindsv 0:ba7650f404af 103 GPIO_Init(gpio, &GPIO_InitStructure);
aravindsv 0:ba7650f404af 104
aravindsv 0:ba7650f404af 105 // [TODO] Disconnect JTAG-DP + SW-DP signals.
aravindsv 0:ba7650f404af 106 // Warning: Need to reconnect under reset
aravindsv 0:ba7650f404af 107 //if ((pin == PA_13) || (pin == PA_14)) {
aravindsv 0:ba7650f404af 108 //
aravindsv 0:ba7650f404af 109 //}
aravindsv 0:ba7650f404af 110 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
aravindsv 0:ba7650f404af 111 //
aravindsv 0:ba7650f404af 112 //}
aravindsv 0:ba7650f404af 113 }
aravindsv 0:ba7650f404af 114
aravindsv 0:ba7650f404af 115 /**
aravindsv 0:ba7650f404af 116 * Configure pin pull-up/pull-down
aravindsv 0:ba7650f404af 117 */
aravindsv 0:ba7650f404af 118 void pin_mode(PinName pin, PinMode mode) {
aravindsv 0:ba7650f404af 119 MBED_ASSERT(pin != (PinName)NC);
aravindsv 0:ba7650f404af 120
aravindsv 0:ba7650f404af 121 uint32_t port_index = STM_PORT(pin);
aravindsv 0:ba7650f404af 122 uint32_t pin_index = STM_PIN(pin);
aravindsv 0:ba7650f404af 123
aravindsv 0:ba7650f404af 124 // Enable GPIO clock
aravindsv 0:ba7650f404af 125 uint32_t gpio_add = Set_GPIO_Clock(port_index);
aravindsv 0:ba7650f404af 126 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
aravindsv 0:ba7650f404af 127
aravindsv 0:ba7650f404af 128 // Configure pull-up/pull-down resistors
aravindsv 0:ba7650f404af 129 uint32_t pupd = (uint32_t)mode;
aravindsv 0:ba7650f404af 130 if (pupd > 2)
aravindsv 0:ba7650f404af 131 pupd = 0; // Open-drain = No pull-up/No pull-down
aravindsv 0:ba7650f404af 132 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
aravindsv 0:ba7650f404af 133 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
aravindsv 0:ba7650f404af 134
aravindsv 0:ba7650f404af 135 }