mbed official / mbed-src

mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_STM32F3/port_api.c@621:9c82b0f79f3d, 2015-09-11 (annotated)

Committer:
mbed_official
Date:
Fri Sep 11 09:30:09 2015 +0100
Revision:
621:9c82b0f79f3d
Parent:
508:4f5903e025e6 
Synchronized with git revision 6c1d63e069ab9bd86de92e8296ca783681257538



Full URL: https://github.com/mbedmicro/mbed/commit/6c1d63e069ab9bd86de92e8296ca783681257538/



ignore target files not supported by the yotta module

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 423:560d1a9f3083 1 /* mbed Microcontroller Library
mbed_official 423:560d1a9f3083 2 *******************************************************************************
mbed_official 423:560d1a9f3083 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 423:560d1a9f3083 4 * All rights reserved.
mbed_official 423:560d1a9f3083 5 *
mbed_official 423:560d1a9f3083 6 * Redistribution and use in source and binary forms, with or without
mbed_official 423:560d1a9f3083 7 * modification, are permitted provided that the following conditions are met:
mbed_official 423:560d1a9f3083 8 *
mbed_official 423:560d1a9f3083 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 423:560d1a9f3083 10 * this list of conditions and the following disclaimer.
mbed_official 423:560d1a9f3083 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 423:560d1a9f3083 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 423:560d1a9f3083 13 * and/or other materials provided with the distribution.
mbed_official 423:560d1a9f3083 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 423:560d1a9f3083 15 * may be used to endorse or promote products derived from this software
mbed_official 423:560d1a9f3083 16 * without specific prior written permission.
mbed_official 423:560d1a9f3083 17 *
mbed_official 423:560d1a9f3083 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 423:560d1a9f3083 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 423:560d1a9f3083 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 423:560d1a9f3083 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 423:560d1a9f3083 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 423:560d1a9f3083 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 423:560d1a9f3083 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 423:560d1a9f3083 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 423:560d1a9f3083 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 423:560d1a9f3083 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 423:560d1a9f3083 28 *******************************************************************************
mbed_official 423:560d1a9f3083 29 */
mbed_official 423:560d1a9f3083 30 #include "port_api.h"
mbed_official 423:560d1a9f3083 31 #include "pinmap.h"
mbed_official 423:560d1a9f3083 32 #include "gpio_api.h"
mbed_official 423:560d1a9f3083 33 #include "mbed_error.h"
mbed_official 423:560d1a9f3083 34
mbed_official 423:560d1a9f3083 35 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 423:560d1a9f3083 36
mbed_official 423:560d1a9f3083 37 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 423:560d1a9f3083 38
mbed_official 423:560d1a9f3083 39 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 423:560d1a9f3083 40 // low nibble = pin number
mbed_official 423:560d1a9f3083 41 PinName port_pin(PortName port, int pin_n)
mbed_official 423:560d1a9f3083 42 {
mbed_official 423:560d1a9f3083 43 return (PinName)(pin_n + (port << 4));
mbed_official 423:560d1a9f3083 44 }
mbed_official 423:560d1a9f3083 45
mbed_official 423:560d1a9f3083 46 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
mbed_official 423:560d1a9f3083 47 {
mbed_official 423:560d1a9f3083 48 uint32_t port_index = (uint32_t)port;
mbed_official 423:560d1a9f3083 49
mbed_official 423:560d1a9f3083 50 // Enable GPIO clock
mbed_official 423:560d1a9f3083 51 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 423:560d1a9f3083 52 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 423:560d1a9f3083 53
mbed_official 423:560d1a9f3083 54 // Fill PORT object structure for future use
mbed_official 423:560d1a9f3083 55 obj->port = port;
mbed_official 423:560d1a9f3083 56 obj->mask = mask;
mbed_official 423:560d1a9f3083 57 obj->direction = dir;
mbed_official 423:560d1a9f3083 58 obj->reg_in = &gpio->IDR;
mbed_official 423:560d1a9f3083 59 obj->reg_out = &gpio->ODR;
mbed_official 423:560d1a9f3083 60
mbed_official 423:560d1a9f3083 61 port_dir(obj, dir);
mbed_official 423:560d1a9f3083 62 }
mbed_official 423:560d1a9f3083 63
mbed_official 423:560d1a9f3083 64 void port_dir(port_t *obj, PinDirection dir)
mbed_official 423:560d1a9f3083 65 {
mbed_official 423:560d1a9f3083 66 uint32_t i;
mbed_official 423:560d1a9f3083 67 obj->direction = dir;
mbed_official 423:560d1a9f3083 68 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 423:560d1a9f3083 69 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 423:560d1a9f3083 70 if (dir == PIN_OUTPUT) {
mbed_official 423:560d1a9f3083 71 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
mbed_official 423:560d1a9f3083 72 } else { // PIN_INPUT
mbed_official 423:560d1a9f3083 73 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 423:560d1a9f3083 74 }
mbed_official 423:560d1a9f3083 75 }
mbed_official 423:560d1a9f3083 76 }
mbed_official 423:560d1a9f3083 77 }
mbed_official 423:560d1a9f3083 78
mbed_official 423:560d1a9f3083 79 void port_mode(port_t *obj, PinMode mode)
mbed_official 423:560d1a9f3083 80 {
mbed_official 423:560d1a9f3083 81 uint32_t i;
mbed_official 423:560d1a9f3083 82 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 423:560d1a9f3083 83 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 423:560d1a9f3083 84 pin_mode(port_pin(obj->port, i), mode);
mbed_official 423:560d1a9f3083 85 }
mbed_official 423:560d1a9f3083 86 }
mbed_official 423:560d1a9f3083 87 }
mbed_official 423:560d1a9f3083 88
mbed_official 423:560d1a9f3083 89 void port_write(port_t *obj, int value)
mbed_official 423:560d1a9f3083 90 {
mbed_official 423:560d1a9f3083 91 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
mbed_official 423:560d1a9f3083 92 }
mbed_official 423:560d1a9f3083 93
mbed_official 423:560d1a9f3083 94 int port_read(port_t *obj)
mbed_official 423:560d1a9f3083 95 {
mbed_official 423:560d1a9f3083 96 if (obj->direction == PIN_OUTPUT) {
mbed_official 423:560d1a9f3083 97 return (*obj->reg_out & obj->mask);
mbed_official 423:560d1a9f3083 98 } else { // PIN_INPUT
mbed_official 423:560d1a9f3083 99 return (*obj->reg_in & obj->mask);
mbed_official 423:560d1a9f3083 100 }
mbed_official 423:560d1a9f3083 101 }
mbed_official 423:560d1a9f3083 102
mbed_official 423:560d1a9f3083 103 #endif