mbed library sources
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Diff: targets/hal/TARGET_STM/TARGET_NUCLEO_F411RE/port_api.c
- Revision:
- 429:cc5da43e7bf6
- Parent:
- 428:4ddf7f7eabbb
- Child:
- 430:d406b7919023
--- a/targets/hal/TARGET_STM/TARGET_NUCLEO_F411RE/port_api.c Mon Dec 08 07:30:07 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,103 +0,0 @@ -/* 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 "port_api.h" -#include "pinmap.h" -#include "gpio_api.h" -#include "mbed_error.h" - -#if DEVICE_PORTIN || DEVICE_PORTOUT - -extern uint32_t Set_GPIO_Clock(uint32_t port_idx); - -// high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...) -// low nibble = pin number -PinName port_pin(PortName port, int pin_n) -{ - return (PinName)(pin_n + (port << 4)); -} - -void port_init(port_t *obj, PortName port, int mask, PinDirection dir) -{ - uint32_t port_index = (uint32_t)port; - - // Enable GPIO clock - uint32_t gpio_add = Set_GPIO_Clock(port_index); - GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; - - // Fill PORT object structure for future use - obj->port = port; - obj->mask = mask; - obj->direction = dir; - obj->reg_in = &gpio->IDR; - obj->reg_out = &gpio->ODR; - - port_dir(obj, dir); -} - -void port_dir(port_t *obj, PinDirection dir) -{ - uint32_t i; - obj->direction = dir; - for (i = 0; i < 16; i++) { // Process all pins - if (obj->mask & (1 << i)) { // If the pin is used - if (dir == PIN_OUTPUT) { - pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0)); - } else { // PIN_INPUT - pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); - } - } - } -} - -void port_mode(port_t *obj, PinMode mode) -{ - uint32_t i; - for (i = 0; i < 16; i++) { // Process all pins - if (obj->mask & (1 << i)) { // If the pin is used - pin_mode(port_pin(obj->port, i), mode); - } - } -} - -void port_write(port_t *obj, int value) -{ - *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask); -} - -int port_read(port_t *obj) -{ - if (obj->direction == PIN_OUTPUT) { - return (*obj->reg_out & obj->mask); - } else { // PIN_INPUT - return (*obj->reg_in & obj->mask); - } -} - -#endif