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_STM32L4/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) 2015, 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 // Warning: order must be the same as the one defined in PinNames.h !!!
aravindsv 0:ba7650f404af 37 static const uint32_t gpio_mode[14] = {
aravindsv 0:ba7650f404af 38 0x00000000, // 0 = GPIO_MODE_INPUT
aravindsv 0:ba7650f404af 39 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
aravindsv 0:ba7650f404af 40 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
aravindsv 0:ba7650f404af 41 0x00000002, // 3 = GPIO_MODE_AF_PP
aravindsv 0:ba7650f404af 42 0x00000012, // 4 = GPIO_MODE_AF_OD
aravindsv 0:ba7650f404af 43 0x00000003, // 5 = GPIO_MODE_ANALOG
aravindsv 0:ba7650f404af 44 0x0000000B, // 6 = GPIO_MODE_ANALOG_ADC_CONTROL
aravindsv 0:ba7650f404af 45 0x10110000, // 7 = GPIO_MODE_IT_RISING
aravindsv 0:ba7650f404af 46 0x10210000, // 8 = GPIO_MODE_IT_FALLING
aravindsv 0:ba7650f404af 47 0x10310000, // 9 = GPIO_MODE_IT_RISING_FALLING
aravindsv 0:ba7650f404af 48 0x10120000, // 10 = GPIO_MODE_EVT_RISING
aravindsv 0:ba7650f404af 49 0x10220000, // 11 = GPIO_MODE_EVT_FALLING
aravindsv 0:ba7650f404af 50 0x10320000, // 12 = GPIO_MODE_EVT_RISING_FALLING
aravindsv 0:ba7650f404af 51 0x10000000 // 13 = Reset IT and EVT (not in STM32Cube HAL)
aravindsv 0:ba7650f404af 52 };
aravindsv 0:ba7650f404af 53
aravindsv 0:ba7650f404af 54 // Enable GPIO clock and return GPIO base address
aravindsv 0:ba7650f404af 55 uint32_t Set_GPIO_Clock(uint32_t port_idx)
aravindsv 0:ba7650f404af 56 {
aravindsv 0:ba7650f404af 57 uint32_t gpio_add = 0;
aravindsv 0:ba7650f404af 58 switch (port_idx) {
aravindsv 0:ba7650f404af 59 case PortA:
aravindsv 0:ba7650f404af 60 gpio_add = GPIOA_BASE;
aravindsv 0:ba7650f404af 61 __HAL_RCC_GPIOA_CLK_ENABLE();
aravindsv 0:ba7650f404af 62 break;
aravindsv 0:ba7650f404af 63 case PortB:
aravindsv 0:ba7650f404af 64 gpio_add = GPIOB_BASE;
aravindsv 0:ba7650f404af 65 __HAL_RCC_GPIOB_CLK_ENABLE();
aravindsv 0:ba7650f404af 66 break;
aravindsv 0:ba7650f404af 67 case PortC:
aravindsv 0:ba7650f404af 68 gpio_add = GPIOC_BASE;
aravindsv 0:ba7650f404af 69 __HAL_RCC_GPIOC_CLK_ENABLE();
aravindsv 0:ba7650f404af 70 break;
aravindsv 0:ba7650f404af 71 case PortD:
aravindsv 0:ba7650f404af 72 gpio_add = GPIOD_BASE;
aravindsv 0:ba7650f404af 73 __HAL_RCC_GPIOD_CLK_ENABLE();
aravindsv 0:ba7650f404af 74 break;
aravindsv 0:ba7650f404af 75 case PortE:
aravindsv 0:ba7650f404af 76 gpio_add = GPIOE_BASE;
aravindsv 0:ba7650f404af 77 __HAL_RCC_GPIOE_CLK_ENABLE();
aravindsv 0:ba7650f404af 78 break;
aravindsv 0:ba7650f404af 79 case PortH:
aravindsv 0:ba7650f404af 80 gpio_add = GPIOH_BASE;
aravindsv 0:ba7650f404af 81 __HAL_RCC_GPIOH_CLK_ENABLE();
aravindsv 0:ba7650f404af 82 break;
aravindsv 0:ba7650f404af 83 default:
aravindsv 0:ba7650f404af 84 error("Pinmap error: wrong port number\n");
aravindsv 0:ba7650f404af 85 break;
aravindsv 0:ba7650f404af 86 }
aravindsv 0:ba7650f404af 87 return gpio_add;
aravindsv 0:ba7650f404af 88 }
aravindsv 0:ba7650f404af 89
aravindsv 0:ba7650f404af 90 /**
aravindsv 0:ba7650f404af 91 * Configure pin (mode, speed, output type and pull-up/pull-down)
aravindsv 0:ba7650f404af 92 */
aravindsv 0:ba7650f404af 93 void pin_function(PinName pin, int data)
aravindsv 0:ba7650f404af 94 {
aravindsv 0:ba7650f404af 95 MBED_ASSERT(pin != (PinName)NC);
aravindsv 0:ba7650f404af 96 // Get the pin informations
aravindsv 0:ba7650f404af 97 uint32_t mode = STM_PIN_MODE(data);
aravindsv 0:ba7650f404af 98 uint32_t pupd = STM_PIN_PUPD(data);
aravindsv 0:ba7650f404af 99 uint32_t afnum = STM_PIN_AFNUM(data);
aravindsv 0:ba7650f404af 100
aravindsv 0:ba7650f404af 101 uint32_t port_index = STM_PORT(pin);
aravindsv 0:ba7650f404af 102 uint32_t pin_index = STM_PIN(pin);
aravindsv 0:ba7650f404af 103
aravindsv 0:ba7650f404af 104 // Enable GPIO clock
aravindsv 0:ba7650f404af 105 uint32_t gpio_add = Set_GPIO_Clock(port_index);
aravindsv 0:ba7650f404af 106 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
aravindsv 0:ba7650f404af 107
aravindsv 0:ba7650f404af 108 // Configure GPIO
aravindsv 0:ba7650f404af 109 GPIO_InitTypeDef GPIO_InitStructure;
aravindsv 0:ba7650f404af 110 GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
aravindsv 0:ba7650f404af 111 GPIO_InitStructure.Mode = gpio_mode[mode];
aravindsv 0:ba7650f404af 112 GPIO_InitStructure.Pull = pupd;
aravindsv 0:ba7650f404af 113 GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
aravindsv 0:ba7650f404af 114 GPIO_InitStructure.Alternate = afnum;
aravindsv 0:ba7650f404af 115 HAL_GPIO_Init(gpio, &GPIO_InitStructure);
aravindsv 0:ba7650f404af 116
aravindsv 0:ba7650f404af 117 // [TODO] Disconnect JTAG-DP + SW-DP signals.
aravindsv 0:ba7650f404af 118 // Warning: Need to reconnect under reset
aravindsv 0:ba7650f404af 119 //if ((pin == PA_13) || (pin == PA_14)) {
aravindsv 0:ba7650f404af 120 //
aravindsv 0:ba7650f404af 121 //}
aravindsv 0:ba7650f404af 122 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
aravindsv 0:ba7650f404af 123 //
aravindsv 0:ba7650f404af 124 //}
aravindsv 0:ba7650f404af 125 }
aravindsv 0:ba7650f404af 126
aravindsv 0:ba7650f404af 127 /**
aravindsv 0:ba7650f404af 128 * Configure pin pull-up/pull-down
aravindsv 0:ba7650f404af 129 */
aravindsv 0:ba7650f404af 130 void pin_mode(PinName pin, PinMode mode)
aravindsv 0:ba7650f404af 131 {
aravindsv 0:ba7650f404af 132 MBED_ASSERT(pin != (PinName)NC);
aravindsv 0:ba7650f404af 133 uint32_t port_index = STM_PORT(pin);
aravindsv 0:ba7650f404af 134 uint32_t pin_index = STM_PIN(pin);
aravindsv 0:ba7650f404af 135
aravindsv 0:ba7650f404af 136 // Enable GPIO clock
aravindsv 0:ba7650f404af 137 uint32_t gpio_add = Set_GPIO_Clock(port_index);
aravindsv 0:ba7650f404af 138 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
aravindsv 0:ba7650f404af 139
aravindsv 0:ba7650f404af 140 // Configure pull-up/pull-down resistors
aravindsv 0:ba7650f404af 141 uint32_t pupd = (uint32_t)mode;
aravindsv 0:ba7650f404af 142 if (pupd > 2) {
aravindsv 0:ba7650f404af 143 pupd = 0; // Open-drain = No pull-up/No pull-down
aravindsv 0:ba7650f404af 144 }
aravindsv 0:ba7650f404af 145 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
aravindsv 0:ba7650f404af 146 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
aravindsv 0:ba7650f404af 147 }