PHung Tung / SRC_STM32F7

SPKT

Dependents:   WAV

targets/hal/TARGET_STM/TARGET_STM32F7/gpio_api.c@0:e87aa4c49e95, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 21:51:46 2019 +0000
Revision:
0:e87aa4c49e95
libray

Who changed what in which revision?

UserRevisionLine numberNew contents of line
phungductung 0:e87aa4c49e95 1 /* mbed Microcontroller Library
phungductung 0:e87aa4c49e95 2 *******************************************************************************
phungductung 0:e87aa4c49e95 3 * Copyright (c) 2015, STMicroelectronics
phungductung 0:e87aa4c49e95 4 * All rights reserved.
phungductung 0:e87aa4c49e95 5 *
phungductung 0:e87aa4c49e95 6 * Redistribution and use in source and binary forms, with or without
phungductung 0:e87aa4c49e95 7 * modification, are permitted provided that the following conditions are met:
phungductung 0:e87aa4c49e95 8 *
phungductung 0:e87aa4c49e95 9 * 1. Redistributions of source code must retain the above copyright notice,
phungductung 0:e87aa4c49e95 10 * this list of conditions and the following disclaimer.
phungductung 0:e87aa4c49e95 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
phungductung 0:e87aa4c49e95 12 * this list of conditions and the following disclaimer in the documentation
phungductung 0:e87aa4c49e95 13 * and/or other materials provided with the distribution.
phungductung 0:e87aa4c49e95 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
phungductung 0:e87aa4c49e95 15 * may be used to endorse or promote products derived from this software
phungductung 0:e87aa4c49e95 16 * without specific prior written permission.
phungductung 0:e87aa4c49e95 17 *
phungductung 0:e87aa4c49e95 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
phungductung 0:e87aa4c49e95 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
phungductung 0:e87aa4c49e95 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
phungductung 0:e87aa4c49e95 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
phungductung 0:e87aa4c49e95 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
phungductung 0:e87aa4c49e95 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
phungductung 0:e87aa4c49e95 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
phungductung 0:e87aa4c49e95 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
phungductung 0:e87aa4c49e95 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
phungductung 0:e87aa4c49e95 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
phungductung 0:e87aa4c49e95 28 *******************************************************************************
phungductung 0:e87aa4c49e95 29 */
phungductung 0:e87aa4c49e95 30 #include "mbed_assert.h"
phungductung 0:e87aa4c49e95 31 #include "gpio_api.h"
phungductung 0:e87aa4c49e95 32 #include "pinmap.h"
phungductung 0:e87aa4c49e95 33 #include "mbed_error.h"
phungductung 0:e87aa4c49e95 34
phungductung 0:e87aa4c49e95 35 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
phungductung 0:e87aa4c49e95 36
phungductung 0:e87aa4c49e95 37 uint32_t gpio_set(PinName pin)
phungductung 0:e87aa4c49e95 38 {
phungductung 0:e87aa4c49e95 39 MBED_ASSERT(pin != (PinName)NC);
phungductung 0:e87aa4c49e95 40
phungductung 0:e87aa4c49e95 41 pin_function(pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
phungductung 0:e87aa4c49e95 42 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
phungductung 0:e87aa4c49e95 43 }
phungductung 0:e87aa4c49e95 44
phungductung 0:e87aa4c49e95 45 void gpio_init(gpio_t *obj, PinName pin)
phungductung 0:e87aa4c49e95 46 {
phungductung 0:e87aa4c49e95 47 obj->pin = pin;
phungductung 0:e87aa4c49e95 48 if (pin == (PinName)NC)
phungductung 0:e87aa4c49e95 49 return;
phungductung 0:e87aa4c49e95 50
phungductung 0:e87aa4c49e95 51 uint32_t port_index = STM_PORT(pin);
phungductung 0:e87aa4c49e95 52
phungductung 0:e87aa4c49e95 53 // Enable GPIO clock
phungductung 0:e87aa4c49e95 54 uint32_t gpio_add = Set_GPIO_Clock(port_index);
phungductung 0:e87aa4c49e95 55 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
phungductung 0:e87aa4c49e95 56
phungductung 0:e87aa4c49e95 57 // Fill GPIO object structure for future use
phungductung 0:e87aa4c49e95 58 obj->mask = gpio_set(pin);
phungductung 0:e87aa4c49e95 59 obj->reg_in = &gpio->IDR;
phungductung 0:e87aa4c49e95 60 obj->reg_set_clr = &gpio->BSRR;
phungductung 0:e87aa4c49e95 61 }
phungductung 0:e87aa4c49e95 62
phungductung 0:e87aa4c49e95 63 void gpio_mode(gpio_t *obj, PinMode mode)
phungductung 0:e87aa4c49e95 64 {
phungductung 0:e87aa4c49e95 65 pin_mode(obj->pin, mode);
phungductung 0:e87aa4c49e95 66 }
phungductung 0:e87aa4c49e95 67
phungductung 0:e87aa4c49e95 68 void gpio_dir(gpio_t *obj, PinDirection direction)
phungductung 0:e87aa4c49e95 69 {
phungductung 0:e87aa4c49e95 70 MBED_ASSERT(obj->pin != (PinName)NC);
phungductung 0:e87aa4c49e95 71 if (direction == PIN_OUTPUT) {
phungductung 0:e87aa4c49e95 72 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
phungductung 0:e87aa4c49e95 73 } else { // PIN_INPUT
phungductung 0:e87aa4c49e95 74 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
phungductung 0:e87aa4c49e95 75 }
phungductung 0:e87aa4c49e95 76 }