不韋 呂 / F746_SD_BitmapViewer

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Dependencies:   SDFileSystem_Warning_Fixed F746_GUI

mbed_src_STM32F7/targets/hal/TARGET_STM/TARGET_STM32F7/port_api.c@1:bb146d5fe9aa, 2018-10-23 (annotated)

Committer:
MikamiUitOpen
Date:
Tue Oct 23 11:51:47 2018 +0000
Revision:
1:bb146d5fe9aa
Parent:
0:f62ffd3644bf 
2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:f62ffd3644bf 1 /* mbed Microcontroller Library
MikamiUitOpen 0:f62ffd3644bf 2 *******************************************************************************
MikamiUitOpen 0:f62ffd3644bf 3 * Copyright (c) 2015, STMicroelectronics
MikamiUitOpen 0:f62ffd3644bf 4 * All rights reserved.
MikamiUitOpen 0:f62ffd3644bf 5 *
MikamiUitOpen 0:f62ffd3644bf 6 * Redistribution and use in source and binary forms, with or without
MikamiUitOpen 0:f62ffd3644bf 7 * modification, are permitted provided that the following conditions are met:
MikamiUitOpen 0:f62ffd3644bf 8 *
MikamiUitOpen 0:f62ffd3644bf 9 * 1. Redistributions of source code must retain the above copyright notice,
MikamiUitOpen 0:f62ffd3644bf 10 * this list of conditions and the following disclaimer.
MikamiUitOpen 0:f62ffd3644bf 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
MikamiUitOpen 0:f62ffd3644bf 12 * this list of conditions and the following disclaimer in the documentation
MikamiUitOpen 0:f62ffd3644bf 13 * and/or other materials provided with the distribution.
MikamiUitOpen 0:f62ffd3644bf 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
MikamiUitOpen 0:f62ffd3644bf 15 * may be used to endorse or promote products derived from this software
MikamiUitOpen 0:f62ffd3644bf 16 * without specific prior written permission.
MikamiUitOpen 0:f62ffd3644bf 17 *
MikamiUitOpen 0:f62ffd3644bf 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
MikamiUitOpen 0:f62ffd3644bf 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
MikamiUitOpen 0:f62ffd3644bf 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
MikamiUitOpen 0:f62ffd3644bf 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
MikamiUitOpen 0:f62ffd3644bf 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
MikamiUitOpen 0:f62ffd3644bf 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
MikamiUitOpen 0:f62ffd3644bf 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
MikamiUitOpen 0:f62ffd3644bf 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
MikamiUitOpen 0:f62ffd3644bf 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
MikamiUitOpen 0:f62ffd3644bf 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
MikamiUitOpen 0:f62ffd3644bf 28 *******************************************************************************
MikamiUitOpen 0:f62ffd3644bf 29 */
MikamiUitOpen 0:f62ffd3644bf 30 #include "port_api.h"
MikamiUitOpen 0:f62ffd3644bf 31 #include "pinmap.h"
MikamiUitOpen 0:f62ffd3644bf 32 #include "gpio_api.h"
MikamiUitOpen 0:f62ffd3644bf 33 #include "mbed_error.h"
MikamiUitOpen 0:f62ffd3644bf 34
MikamiUitOpen 0:f62ffd3644bf 35 #if DEVICE_PORTIN || DEVICE_PORTOUT
MikamiUitOpen 0:f62ffd3644bf 36
MikamiUitOpen 0:f62ffd3644bf 37 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
MikamiUitOpen 0:f62ffd3644bf 38
MikamiUitOpen 0:f62ffd3644bf 39 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
MikamiUitOpen 0:f62ffd3644bf 40 // low nibble = pin number
MikamiUitOpen 0:f62ffd3644bf 41 PinName port_pin(PortName port, int pin_n)
MikamiUitOpen 0:f62ffd3644bf 42 {
MikamiUitOpen 0:f62ffd3644bf 43 return (PinName)(pin_n + (port << 4));
MikamiUitOpen 0:f62ffd3644bf 44 }
MikamiUitOpen 0:f62ffd3644bf 45
MikamiUitOpen 0:f62ffd3644bf 46 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
MikamiUitOpen 0:f62ffd3644bf 47 {
MikamiUitOpen 0:f62ffd3644bf 48 uint32_t port_index = (uint32_t)port;
MikamiUitOpen 0:f62ffd3644bf 49
MikamiUitOpen 0:f62ffd3644bf 50 // Enable GPIO clock
MikamiUitOpen 0:f62ffd3644bf 51 uint32_t gpio_add = Set_GPIO_Clock(port_index);
MikamiUitOpen 0:f62ffd3644bf 52 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
MikamiUitOpen 0:f62ffd3644bf 53
MikamiUitOpen 0:f62ffd3644bf 54 // Fill PORT object structure for future use
MikamiUitOpen 0:f62ffd3644bf 55 obj->port = port;
MikamiUitOpen 0:f62ffd3644bf 56 obj->mask = mask;
MikamiUitOpen 0:f62ffd3644bf 57 obj->direction = dir;
MikamiUitOpen 0:f62ffd3644bf 58 obj->reg_in = &gpio->IDR;
MikamiUitOpen 0:f62ffd3644bf 59 obj->reg_out = &gpio->ODR;
MikamiUitOpen 0:f62ffd3644bf 60
MikamiUitOpen 0:f62ffd3644bf 61 port_dir(obj, dir);
MikamiUitOpen 0:f62ffd3644bf 62 }
MikamiUitOpen 0:f62ffd3644bf 63
MikamiUitOpen 0:f62ffd3644bf 64 void port_dir(port_t *obj, PinDirection dir)
MikamiUitOpen 0:f62ffd3644bf 65 {
MikamiUitOpen 0:f62ffd3644bf 66 uint32_t i;
MikamiUitOpen 0:f62ffd3644bf 67 obj->direction = dir;
MikamiUitOpen 0:f62ffd3644bf 68 for (i = 0; i < 16; i++) { // Process all pins
MikamiUitOpen 0:f62ffd3644bf 69 if (obj->mask & (1 << i)) { // If the pin is used
MikamiUitOpen 0:f62ffd3644bf 70 if (dir == PIN_OUTPUT) {
MikamiUitOpen 0:f62ffd3644bf 71 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
MikamiUitOpen 0:f62ffd3644bf 72 } else { // PIN_INPUT
MikamiUitOpen 0:f62ffd3644bf 73 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
MikamiUitOpen 0:f62ffd3644bf 74 }
MikamiUitOpen 0:f62ffd3644bf 75 }
MikamiUitOpen 0:f62ffd3644bf 76 }
MikamiUitOpen 0:f62ffd3644bf 77 }
MikamiUitOpen 0:f62ffd3644bf 78
MikamiUitOpen 0:f62ffd3644bf 79 void port_mode(port_t *obj, PinMode mode)
MikamiUitOpen 0:f62ffd3644bf 80 {
MikamiUitOpen 0:f62ffd3644bf 81 uint32_t i;
MikamiUitOpen 0:f62ffd3644bf 82 for (i = 0; i < 16; i++) { // Process all pins
MikamiUitOpen 0:f62ffd3644bf 83 if (obj->mask & (1 << i)) { // If the pin is used
MikamiUitOpen 0:f62ffd3644bf 84 pin_mode(port_pin(obj->port, i), mode);
MikamiUitOpen 0:f62ffd3644bf 85 }
MikamiUitOpen 0:f62ffd3644bf 86 }
MikamiUitOpen 0:f62ffd3644bf 87 }
MikamiUitOpen 0:f62ffd3644bf 88
MikamiUitOpen 0:f62ffd3644bf 89 void port_write(port_t *obj, int value)
MikamiUitOpen 0:f62ffd3644bf 90 {
MikamiUitOpen 0:f62ffd3644bf 91 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
MikamiUitOpen 0:f62ffd3644bf 92 }
MikamiUitOpen 0:f62ffd3644bf 93
MikamiUitOpen 0:f62ffd3644bf 94 int port_read(port_t *obj)
MikamiUitOpen 0:f62ffd3644bf 95 {
MikamiUitOpen 0:f62ffd3644bf 96 if (obj->direction == PIN_OUTPUT) {
MikamiUitOpen 0:f62ffd3644bf 97 return (*obj->reg_out & obj->mask);
MikamiUitOpen 0:f62ffd3644bf 98 } else { // PIN_INPUT
MikamiUitOpen 0:f62ffd3644bf 99 return (*obj->reg_in & obj->mask);
MikamiUitOpen 0:f62ffd3644bf 100 }
MikamiUitOpen 0:f62ffd3644bf 101 }
MikamiUitOpen 0:f62ffd3644bf 102
MikamiUitOpen 0:f62ffd3644bf 103 #endif