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targets/TARGET_STM/gpio_api.c
- Committer:
- <>
- Date:
- 2017-03-14
- Revision:
- 160:d5399cc887bb
- Parent:
- 157:ff67d9f36b67
- Child:
- 165:e614a9f1c9e2
File content as of revision 160:d5399cc887bb:
/* mbed Microcontroller Library ******************************************************************************* * Copyright (c) 2015, 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 "gpio_api.h" #include "pinmap.h" #include "mbed_error.h" #include "pin_device.h" extern const uint32_t ll_pin_defines[16]; // Enable GPIO clock and return GPIO base address GPIO_TypeDef *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 GPIOE_BASE case PortE: gpio_add = GPIOE_BASE; __GPIOE_CLK_ENABLE(); break; #endif #if defined GPIOF_BASE case PortF: gpio_add = GPIOF_BASE; __GPIOF_CLK_ENABLE(); break; #endif #if defined GPIOG_BASE case PortG: #if defined TARGET_STM32L4 __HAL_RCC_PWR_CLK_ENABLE(); HAL_PWREx_EnableVddIO2(); #endif gpio_add = GPIOG_BASE; __GPIOG_CLK_ENABLE(); break; #endif #if defined GPIOH_BASE case PortH: gpio_add = GPIOH_BASE; __GPIOH_CLK_ENABLE(); break; #endif #if defined GPIOI_BASE case PortI: gpio_add = GPIOI_BASE; __GPIOI_CLK_ENABLE(); break; #endif #if defined GPIOJ_BASE case PortJ: gpio_add = GPIOJ_BASE; __GPIOJ_CLK_ENABLE(); break; #endif #if defined GPIOK_BASE case PortK: gpio_add = GPIOK_BASE; __GPIOK_CLK_ENABLE(); break; #endif default: error("Pinmap error: wrong port number."); break; } return (GPIO_TypeDef *) gpio_add; } uint32_t gpio_set(PinName pin) { MBED_ASSERT(pin != (PinName)NC); pin_function(pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask } void gpio_init(gpio_t *obj, PinName pin) { obj->pin = pin; if (pin == (PinName)NC) { return; } uint32_t port_index = STM_PORT(pin); // Enable GPIO clock GPIO_TypeDef *gpio = Set_GPIO_Clock(port_index); // Fill GPIO object structure for future use obj->mask = gpio_set(pin); obj->gpio = gpio; obj->ll_pin = ll_pin_defines[STM_PIN(obj->pin)]; obj->reg_in = &gpio->IDR; obj->reg_set = &gpio->BSRR; #ifdef GPIO_IP_WITHOUT_BRR obj->reg_clr = &gpio->BSRR; #else obj->reg_clr = &gpio->BRR; #endif } void gpio_mode(gpio_t *obj, PinMode mode) { pin_mode(obj->pin, mode); } inline void gpio_dir(gpio_t *obj, PinDirection direction) { if (direction == PIN_INPUT) { LL_GPIO_SetPinMode(obj->gpio, obj->ll_pin, LL_GPIO_MODE_INPUT); } else { LL_GPIO_SetPinMode(obj->gpio, obj->ll_pin, LL_GPIO_MODE_OUTPUT); } }