mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_STM/TARGET_NUCLEO_F302R8/pinmap.c
- Committer:
- mbed_official
- Date:
- 2014-08-15
- Revision:
- 285:31249416b6f9
- Parent:
- 251:de9a1e4ffd79
File content as of revision 285:31249416b6f9:
/* mbed Microcontroller Library ******************************************************************************* * Copyright (c) 2014, STMicroelectronics * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ******************************************************************************* */ #include "mbed_assert.h" #include "pinmap.h" #include "PortNames.h" #include "mbed_error.h" // Enable GPIO clock and return GPIO base address uint32_t Set_GPIO_Clock(uint32_t port_idx) { uint32_t gpio_add; switch (port_idx) { case PortA: gpio_add = GPIOA_BASE; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); break; case PortB: gpio_add = GPIOB_BASE; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); break; case PortC: gpio_add = GPIOC_BASE; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE); break; case PortD: gpio_add = GPIOD_BASE; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, ENABLE); break; case PortF: gpio_add = GPIOF_BASE; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE); break; default: gpio_add = 0; error("Port number is not correct."); break; } return gpio_add; } /** * Configure pin (mode, speed, output type and pull-up/pull-down) */ void pin_function(PinName pin, int data) { MBED_ASSERT(pin != (PinName)NC); // Get the pin informations uint32_t mode = STM_PIN_MODE(data); uint32_t otype = STM_PIN_OTYPE(data); uint32_t pupd = STM_PIN_PUPD(data); uint32_t afnum = STM_PIN_AFNUM(data); uint32_t port_index = STM_PORT(pin); uint32_t pin_index = STM_PIN(pin); // Enable GPIO clock uint32_t gpio_add = Set_GPIO_Clock(port_index); GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; // Configure Alternate Function // Warning: Must be done before the GPIO is initialized if (afnum != 0xFF) { GPIO_PinAFConfig(gpio, (uint16_t)pin_index, afnum); } // Configure GPIO GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index); GPIO_InitStructure.GPIO_Mode = (GPIOMode_TypeDef)mode; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3; GPIO_InitStructure.GPIO_OType = (GPIOOType_TypeDef)otype; GPIO_InitStructure.GPIO_PuPd = (GPIOPuPd_TypeDef)pupd; GPIO_Init(gpio, &GPIO_InitStructure); // [TODO] Disconnect JTAG-DP + SW-DP signals. // Warning: Need to reconnect under reset //if ((pin == PA_13) || (pin == PA_14)) { // //} //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) { // //} } /** * Configure pin pull-up/pull-down */ void pin_mode(PinName pin, PinMode mode) { MBED_ASSERT(pin != (PinName)NC); uint32_t port_index = STM_PORT(pin); uint32_t pin_index = STM_PIN(pin); // Enable GPIO clock uint32_t gpio_add = Set_GPIO_Clock(port_index); GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; // Configure pull-up/pull-down resistors uint32_t pupd = (uint32_t)mode; if (pupd > 2) pupd = 0; // Open-drain = No pull-up/No pull-down gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2))); gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2)); }