USB Serial application
Fork of USBSerial_HelloWorld by
mbed-dev/targets/TARGET_STM/TARGET_STM32F0/pinmap.c
- Committer:
- Zaitsev
- Date:
- 2017-01-10
- Revision:
- 10:41552d038a69
File content as of revision 10:41552d038a69:
/* 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" // GPIO mode look-up table static const uint32_t gpio_mode[13] = { 0x00000000, // 0 = GPIO_MODE_INPUT 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD 0x00000002, // 3 = GPIO_MODE_AF_PP 0x00000012, // 4 = GPIO_MODE_AF_OD 0x00000003, // 5 = GPIO_MODE_ANALOG 0x10110000, // 6 = GPIO_MODE_IT_RISING 0x10210000, // 7 = GPIO_MODE_IT_FALLING 0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING 0x10120000, // 9 = GPIO_MODE_EVT_RISING 0x10220000, // 10 = GPIO_MODE_EVT_FALLING 0x10320000, // 11 = GPIO_MODE_EVT_RISING_FALLING 0x10000000 // 12 = Reset IT and EVT (not in STM32Cube HAL) }; // Enable GPIO clock and return GPIO base address uint32_t Set_GPIO_Clock(uint32_t port_idx) { uint32_t gpio_add = 0; switch (port_idx) { case PortA: gpio_add = GPIOA_BASE; __GPIOA_CLK_ENABLE(); break; case PortB: gpio_add = GPIOB_BASE; __GPIOB_CLK_ENABLE(); break; #if defined(GPIOC_BASE) case PortC: gpio_add = GPIOC_BASE; __GPIOC_CLK_ENABLE(); break; #endif #if defined(GPIOD_BASE) case PortD: gpio_add = GPIOD_BASE; __GPIOD_CLK_ENABLE(); break; #endif #if defined(GPIOF_BASE) case PortF: gpio_add = GPIOF_BASE; __GPIOF_CLK_ENABLE(); break; #endif default: error("Pinmap error: wrong port number."); 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 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 GPIO GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index); GPIO_InitStructure.Mode = gpio_mode[mode]; GPIO_InitStructure.Pull = pupd; GPIO_InitStructure.Speed = GPIO_SPEED_HIGH; GPIO_InitStructure.Alternate = afnum; HAL_GPIO_Init(gpio, &GPIO_InitStructure); // [TODO] Disconnect SWDIO and SWCLK signals ? // Warning: For debugging it is necessary to reconnect under reset if this is done. //if ((pin == PA_13) || (pin == PA_14)) { // //} } /** * 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)); } /* Internal function for setting the gpiomode/function * without changing Pull mode */ void pin_function_gpiomode(PinName pin, uint32_t gpiomode) { /* Read current pull state from HW to avoid over-write*/ uint32_t port_index = STM_PORT(pin); uint32_t pin_index = STM_PIN(pin); GPIO_TypeDef *gpio = (GPIO_TypeDef *) Set_GPIO_Clock(port_index); uint32_t temp = gpio->PUPDR; uint32_t pull = (temp >> (pin_index * 2U)) & GPIO_PUPDR_PUPDR0; /* Then re-use global function for updating the mode part*/ pin_function(pin, STM_PIN_DATA(gpiomode, pull, 0)); }