Intelligent Systems / mbed-src

This fork of the MBED Library allows you to use counters on the external counter pins (15/16 for Timer 3, 29/30 for Timer 2) by switching internal timing functions in MBED to utilize Timer 0

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32F407VG/pinmap.c@349:591ef4b19797, 2014-10-23 (annotated)

Committer:
bparrott
Date:
Thu Oct 23 10:10:42 2014 +0000
Revision:
349:591ef4b19797
Parent:
327:a7562ccfb9d5 
This changes the timer used at the core of MBED from Timer 3 to Timer 0. This allows for the use of external pins with both Timer 2 and 3.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 133:d4dda5c437f0 1 /* mbed Microcontroller Library
mbed_official 133:d4dda5c437f0 2 *******************************************************************************
mbed_official 133:d4dda5c437f0 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 133:d4dda5c437f0 4 * All rights reserved.
mbed_official 133:d4dda5c437f0 5 *
mbed_official 133:d4dda5c437f0 6 * Redistribution and use in source and binary forms, with or without
mbed_official 133:d4dda5c437f0 7 * modification, are permitted provided that the following conditions are met:
mbed_official 133:d4dda5c437f0 8 *
mbed_official 133:d4dda5c437f0 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 133:d4dda5c437f0 10 * this list of conditions and the following disclaimer.
mbed_official 133:d4dda5c437f0 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 133:d4dda5c437f0 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 133:d4dda5c437f0 13 * and/or other materials provided with the distribution.
mbed_official 133:d4dda5c437f0 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 133:d4dda5c437f0 15 * may be used to endorse or promote products derived from this software
mbed_official 133:d4dda5c437f0 16 * without specific prior written permission.
mbed_official 133:d4dda5c437f0 17 *
mbed_official 133:d4dda5c437f0 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 133:d4dda5c437f0 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 133:d4dda5c437f0 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 133:d4dda5c437f0 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 133:d4dda5c437f0 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 133:d4dda5c437f0 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 133:d4dda5c437f0 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 133:d4dda5c437f0 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 133:d4dda5c437f0 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 133:d4dda5c437f0 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 133:d4dda5c437f0 28 *******************************************************************************
mbed_official 133:d4dda5c437f0 29 */
mbed_official 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 133:d4dda5c437f0 31 #include "pinmap.h"
mbed_official 242:7074e42da0b2 32 #include "PortNames.h"
mbed_official 285:31249416b6f9 33 #include "mbed_error.h"
mbed_official 133:d4dda5c437f0 34
mbed_official 133:d4dda5c437f0 35 // GPIO mode look-up table
mbed_official 327:a7562ccfb9d5 36 static const uint32_t gpio_mode[13] = {
mbed_official 133:d4dda5c437f0 37 0x00000000, // 0 = GPIO_MODE_INPUT
mbed_official 133:d4dda5c437f0 38 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
mbed_official 133:d4dda5c437f0 39 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
mbed_official 133:d4dda5c437f0 40 0x00000002, // 3 = GPIO_MODE_AF_PP
mbed_official 133:d4dda5c437f0 41 0x00000012, // 4 = GPIO_MODE_AF_OD
mbed_official 133:d4dda5c437f0 42 0x00000003, // 5 = GPIO_MODE_ANALOG
mbed_official 133:d4dda5c437f0 43 0x10110000, // 6 = GPIO_MODE_IT_RISING
mbed_official 133:d4dda5c437f0 44 0x10210000, // 7 = GPIO_MODE_IT_FALLING
mbed_official 133:d4dda5c437f0 45 0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING
mbed_official 133:d4dda5c437f0 46 0x10120000, // 9 = GPIO_MODE_EVT_RISING
mbed_official 133:d4dda5c437f0 47 0x10220000, // 10 = GPIO_MODE_EVT_FALLING
mbed_official 327:a7562ccfb9d5 48 0x10320000, // 11 = GPIO_MODE_EVT_RISING_FALLING
mbed_official 327:a7562ccfb9d5 49 0x10000000 // 12 = Reset GPIO_MODE_IT_EVT
mbed_official 133:d4dda5c437f0 50 };
mbed_official 133:d4dda5c437f0 51
mbed_official 133:d4dda5c437f0 52 // Enable GPIO clock and return GPIO base address
mbed_official 133:d4dda5c437f0 53 uint32_t Set_GPIO_Clock(uint32_t port_idx) {
mbed_official 133:d4dda5c437f0 54 uint32_t gpio_add = 0;
mbed_official 133:d4dda5c437f0 55 switch (port_idx) {
mbed_official 133:d4dda5c437f0 56 case PortA:
mbed_official 133:d4dda5c437f0 57 gpio_add = GPIOA_BASE;
mbed_official 133:d4dda5c437f0 58 __GPIOA_CLK_ENABLE();
mbed_official 133:d4dda5c437f0 59 break;
mbed_official 133:d4dda5c437f0 60 case PortB:
mbed_official 133:d4dda5c437f0 61 gpio_add = GPIOB_BASE;
mbed_official 133:d4dda5c437f0 62 __GPIOB_CLK_ENABLE();
mbed_official 133:d4dda5c437f0 63 break;
mbed_official 133:d4dda5c437f0 64 case PortC:
mbed_official 133:d4dda5c437f0 65 gpio_add = GPIOC_BASE;
mbed_official 133:d4dda5c437f0 66 __GPIOC_CLK_ENABLE();
mbed_official 133:d4dda5c437f0 67 break;
mbed_official 133:d4dda5c437f0 68 case PortD:
mbed_official 133:d4dda5c437f0 69 gpio_add = GPIOD_BASE;
mbed_official 133:d4dda5c437f0 70 __GPIOD_CLK_ENABLE();
mbed_official 133:d4dda5c437f0 71 break;
mbed_official 286:46a3fe348d1d 72 case PortE:
mbed_official 286:46a3fe348d1d 73 gpio_add = GPIOE_BASE;
mbed_official 286:46a3fe348d1d 74 __GPIOE_CLK_ENABLE();
mbed_official 286:46a3fe348d1d 75 break;
mbed_official 286:46a3fe348d1d 76 case PortF:
mbed_official 286:46a3fe348d1d 77 gpio_add = GPIOF_BASE;
mbed_official 286:46a3fe348d1d 78 __GPIOF_CLK_ENABLE();
mbed_official 286:46a3fe348d1d 79 break;
mbed_official 286:46a3fe348d1d 80 case PortG:
mbed_official 286:46a3fe348d1d 81 gpio_add = GPIOG_BASE;
mbed_official 286:46a3fe348d1d 82 __GPIOG_CLK_ENABLE();
mbed_official 286:46a3fe348d1d 83 break;
mbed_official 133:d4dda5c437f0 84 case PortH:
mbed_official 133:d4dda5c437f0 85 gpio_add = GPIOH_BASE;
mbed_official 133:d4dda5c437f0 86 __GPIOH_CLK_ENABLE();
mbed_official 133:d4dda5c437f0 87 break;
mbed_official 286:46a3fe348d1d 88 case PortI:
mbed_official 286:46a3fe348d1d 89 gpio_add = GPIOI_BASE;
mbed_official 286:46a3fe348d1d 90 __GPIOI_CLK_ENABLE();
mbed_official 286:46a3fe348d1d 91 break;
mbed_official 133:d4dda5c437f0 92 default:
mbed_official 133:d4dda5c437f0 93 error("Pinmap error: wrong port number.");
mbed_official 227:7bd0639b8911 94 break;
mbed_official 133:d4dda5c437f0 95 }
mbed_official 133:d4dda5c437f0 96 return gpio_add;
mbed_official 133:d4dda5c437f0 97 }
mbed_official 133:d4dda5c437f0 98
mbed_official 133:d4dda5c437f0 99 /**
mbed_official 133:d4dda5c437f0 100 * Configure pin (mode, speed, output type and pull-up/pull-down)
mbed_official 133:d4dda5c437f0 101 */
mbed_official 133:d4dda5c437f0 102 void pin_function(PinName pin, int data) {
mbed_official 227:7bd0639b8911 103 MBED_ASSERT(pin != (PinName)NC);
mbed_official 133:d4dda5c437f0 104 // Get the pin informations
mbed_official 133:d4dda5c437f0 105 uint32_t mode = STM_PIN_MODE(data);
mbed_official 133:d4dda5c437f0 106 uint32_t pupd = STM_PIN_PUPD(data);
mbed_official 133:d4dda5c437f0 107 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 133:d4dda5c437f0 108
mbed_official 133:d4dda5c437f0 109 uint32_t port_index = STM_PORT(pin);
mbed_official 133:d4dda5c437f0 110 uint32_t pin_index = STM_PIN(pin);
mbed_official 133:d4dda5c437f0 111
mbed_official 133:d4dda5c437f0 112 // Enable GPIO clock
mbed_official 133:d4dda5c437f0 113 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 133:d4dda5c437f0 114 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 133:d4dda5c437f0 115
mbed_official 133:d4dda5c437f0 116 // Configure GPIO
mbed_official 133:d4dda5c437f0 117 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 133:d4dda5c437f0 118 GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
mbed_official 133:d4dda5c437f0 119 GPIO_InitStructure.Mode = gpio_mode[mode];
mbed_official 133:d4dda5c437f0 120 GPIO_InitStructure.Pull = pupd;
mbed_official 133:d4dda5c437f0 121 GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
mbed_official 133:d4dda5c437f0 122 GPIO_InitStructure.Alternate = afnum;
mbed_official 133:d4dda5c437f0 123 HAL_GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 133:d4dda5c437f0 124
mbed_official 133:d4dda5c437f0 125 // [TODO] Disconnect JTAG-DP + SW-DP signals.
mbed_official 133:d4dda5c437f0 126 // Warning: Need to reconnect under reset
mbed_official 133:d4dda5c437f0 127 //if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 133:d4dda5c437f0 128 //
mbed_official 133:d4dda5c437f0 129 //}
mbed_official 133:d4dda5c437f0 130 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
mbed_official 133:d4dda5c437f0 131 //
mbed_official 227:7bd0639b8911 132 //}
mbed_official 133:d4dda5c437f0 133 }
mbed_official 133:d4dda5c437f0 134
mbed_official 133:d4dda5c437f0 135 /**
mbed_official 133:d4dda5c437f0 136 * Configure pin pull-up/pull-down
mbed_official 133:d4dda5c437f0 137 */
mbed_official 133:d4dda5c437f0 138 void pin_mode(PinName pin, PinMode mode) {
mbed_official 227:7bd0639b8911 139 MBED_ASSERT(pin != (PinName)NC);
mbed_official 133:d4dda5c437f0 140 uint32_t port_index = STM_PORT(pin);
mbed_official 133:d4dda5c437f0 141 uint32_t pin_index = STM_PIN(pin);
mbed_official 133:d4dda5c437f0 142
mbed_official 133:d4dda5c437f0 143 // Enable GPIO clock
mbed_official 133:d4dda5c437f0 144 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 133:d4dda5c437f0 145 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 133:d4dda5c437f0 146
mbed_official 133:d4dda5c437f0 147 // Configure pull-up/pull-down resistors
mbed_official 133:d4dda5c437f0 148 uint32_t pupd = (uint32_t)mode;
mbed_official 227:7bd0639b8911 149 if (pupd > 2)
mbed_official 227:7bd0639b8911 150 pupd = 0; // Open-drain = No pull-up/No pull-down
mbed_official 133:d4dda5c437f0 151 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
mbed_official 133:d4dda5c437f0 152 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
mbed_official 133:d4dda5c437f0 153
mbed_official 133:d4dda5c437f0 154 }