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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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_STM32L4/port_api.c@610:813dcc80987e, 2015-08-14 (annotated)

Committer:
mbed_official
Date:
Fri Aug 14 13:15:17 2015 +0100
Revision:
610:813dcc80987e
Synchronized with git revision 6d84db41c6833e0b9b024741eb0616a5f62d5599



Full URL: https://github.com/mbedmicro/mbed/commit/6d84db41c6833e0b9b024741eb0616a5f62d5599/



DISCO_F746NG - Improvements

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 610:813dcc80987e 1 /* mbed Microcontroller Library
mbed_official 610:813dcc80987e 2 *******************************************************************************
mbed_official 610:813dcc80987e 3 * Copyright (c) 2015, STMicroelectronics
mbed_official 610:813dcc80987e 4 * All rights reserved.
mbed_official 610:813dcc80987e 5 *
mbed_official 610:813dcc80987e 6 * Redistribution and use in source and binary forms, with or without
mbed_official 610:813dcc80987e 7 * modification, are permitted provided that the following conditions are met:
mbed_official 610:813dcc80987e 8 *
mbed_official 610:813dcc80987e 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 610:813dcc80987e 10 * this list of conditions and the following disclaimer.
mbed_official 610:813dcc80987e 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 610:813dcc80987e 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 610:813dcc80987e 13 * and/or other materials provided with the distribution.
mbed_official 610:813dcc80987e 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 610:813dcc80987e 15 * may be used to endorse or promote products derived from this software
mbed_official 610:813dcc80987e 16 * without specific prior written permission.
mbed_official 610:813dcc80987e 17 *
mbed_official 610:813dcc80987e 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 610:813dcc80987e 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 610:813dcc80987e 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 610:813dcc80987e 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 610:813dcc80987e 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 610:813dcc80987e 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 610:813dcc80987e 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 610:813dcc80987e 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 610:813dcc80987e 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 610:813dcc80987e 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 610:813dcc80987e 28 *******************************************************************************
mbed_official 610:813dcc80987e 29 */
mbed_official 610:813dcc80987e 30 #include "port_api.h"
mbed_official 610:813dcc80987e 31 #include "pinmap.h"
mbed_official 610:813dcc80987e 32 #include "gpio_api.h"
mbed_official 610:813dcc80987e 33 #include "mbed_error.h"
mbed_official 610:813dcc80987e 34
mbed_official 610:813dcc80987e 35 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 610:813dcc80987e 36
mbed_official 610:813dcc80987e 37 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 610:813dcc80987e 38
mbed_official 610:813dcc80987e 39 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 610:813dcc80987e 40 // low nibble = pin number
mbed_official 610:813dcc80987e 41 PinName port_pin(PortName port, int pin_n)
mbed_official 610:813dcc80987e 42 {
mbed_official 610:813dcc80987e 43 return (PinName)(pin_n + (port << 4));
mbed_official 610:813dcc80987e 44 }
mbed_official 610:813dcc80987e 45
mbed_official 610:813dcc80987e 46 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
mbed_official 610:813dcc80987e 47 {
mbed_official 610:813dcc80987e 48 uint32_t port_index = (uint32_t)port;
mbed_official 610:813dcc80987e 49
mbed_official 610:813dcc80987e 50 // Enable GPIO clock
mbed_official 610:813dcc80987e 51 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 610:813dcc80987e 52 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 610:813dcc80987e 53
mbed_official 610:813dcc80987e 54 // Fill PORT object structure for future use
mbed_official 610:813dcc80987e 55 obj->port = port;
mbed_official 610:813dcc80987e 56 obj->mask = mask;
mbed_official 610:813dcc80987e 57 obj->direction = dir;
mbed_official 610:813dcc80987e 58 obj->reg_in = &gpio->IDR;
mbed_official 610:813dcc80987e 59 obj->reg_out = &gpio->ODR;
mbed_official 610:813dcc80987e 60
mbed_official 610:813dcc80987e 61 port_dir(obj, dir);
mbed_official 610:813dcc80987e 62 }
mbed_official 610:813dcc80987e 63
mbed_official 610:813dcc80987e 64 void port_dir(port_t *obj, PinDirection dir)
mbed_official 610:813dcc80987e 65 {
mbed_official 610:813dcc80987e 66 uint32_t i;
mbed_official 610:813dcc80987e 67 obj->direction = dir;
mbed_official 610:813dcc80987e 68 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 610:813dcc80987e 69 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 610:813dcc80987e 70 if (dir == PIN_OUTPUT) {
mbed_official 610:813dcc80987e 71 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
mbed_official 610:813dcc80987e 72 } else { // PIN_INPUT
mbed_official 610:813dcc80987e 73 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 610:813dcc80987e 74 }
mbed_official 610:813dcc80987e 75 }
mbed_official 610:813dcc80987e 76 }
mbed_official 610:813dcc80987e 77 }
mbed_official 610:813dcc80987e 78
mbed_official 610:813dcc80987e 79 void port_mode(port_t *obj, PinMode mode)
mbed_official 610:813dcc80987e 80 {
mbed_official 610:813dcc80987e 81 uint32_t i;
mbed_official 610:813dcc80987e 82 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 610:813dcc80987e 83 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 610:813dcc80987e 84 pin_mode(port_pin(obj->port, i), mode);
mbed_official 610:813dcc80987e 85 }
mbed_official 610:813dcc80987e 86 }
mbed_official 610:813dcc80987e 87 }
mbed_official 610:813dcc80987e 88
mbed_official 610:813dcc80987e 89 void port_write(port_t *obj, int value)
mbed_official 610:813dcc80987e 90 {
mbed_official 610:813dcc80987e 91 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
mbed_official 610:813dcc80987e 92 }
mbed_official 610:813dcc80987e 93
mbed_official 610:813dcc80987e 94 int port_read(port_t *obj)
mbed_official 610:813dcc80987e 95 {
mbed_official 610:813dcc80987e 96 if (obj->direction == PIN_OUTPUT) {
mbed_official 610:813dcc80987e 97 return (*obj->reg_out & obj->mask);
mbed_official 610:813dcc80987e 98 } else { // PIN_INPUT
mbed_official 610:813dcc80987e 99 return (*obj->reg_in & obj->mask);
mbed_official 610:813dcc80987e 100 }
mbed_official 610:813dcc80987e 101 }
mbed_official 610:813dcc80987e 102
mbed_official 610:813dcc80987e 103 #endif