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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_DISCO_F334C8/port_api.c@440:8a0b45cd594f, 2014-12-16 (annotated)

Committer:
mbed_official
Date:
Tue Dec 16 08:15:08 2014 +0000
Revision:
440:8a0b45cd594f
Parent:
381:5460fc57b6e4 
Synchronized with git revision 67fbbf0b635d0c0d93fbe433306c537c2ad206aa



Full URL: https://github.com/mbedmicro/mbed/commit/67fbbf0b635d0c0d93fbe433306c537c2ad206aa/



Targets: nrf51 - updating app_timer.c from Norid'c SDKv7.1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 381:5460fc57b6e4 1 /* mbed Microcontroller Library
mbed_official 381:5460fc57b6e4 2 *******************************************************************************
mbed_official 381:5460fc57b6e4 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 381:5460fc57b6e4 4 * All rights reserved.
mbed_official 381:5460fc57b6e4 5 *
mbed_official 381:5460fc57b6e4 6 * Redistribution and use in source and binary forms, with or without
mbed_official 381:5460fc57b6e4 7 * modification, are permitted provided that the following conditions are met:
mbed_official 381:5460fc57b6e4 8 *
mbed_official 381:5460fc57b6e4 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 381:5460fc57b6e4 10 * this list of conditions and the following disclaimer.
mbed_official 381:5460fc57b6e4 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 381:5460fc57b6e4 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 381:5460fc57b6e4 13 * and/or other materials provided with the distribution.
mbed_official 381:5460fc57b6e4 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 381:5460fc57b6e4 15 * may be used to endorse or promote products derived from this software
mbed_official 381:5460fc57b6e4 16 * without specific prior written permission.
mbed_official 381:5460fc57b6e4 17 *
mbed_official 381:5460fc57b6e4 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 381:5460fc57b6e4 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 381:5460fc57b6e4 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 381:5460fc57b6e4 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 381:5460fc57b6e4 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 381:5460fc57b6e4 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 381:5460fc57b6e4 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 381:5460fc57b6e4 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 381:5460fc57b6e4 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 381:5460fc57b6e4 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 381:5460fc57b6e4 28 *******************************************************************************
mbed_official 381:5460fc57b6e4 29 */
mbed_official 381:5460fc57b6e4 30 #include "port_api.h"
mbed_official 381:5460fc57b6e4 31 #include "pinmap.h"
mbed_official 381:5460fc57b6e4 32 #include "gpio_api.h"
mbed_official 381:5460fc57b6e4 33 #include "mbed_error.h"
mbed_official 381:5460fc57b6e4 34
mbed_official 381:5460fc57b6e4 35 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 381:5460fc57b6e4 36
mbed_official 381:5460fc57b6e4 37 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 381:5460fc57b6e4 38
mbed_official 381:5460fc57b6e4 39 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 381:5460fc57b6e4 40 // low nibble = pin number
mbed_official 381:5460fc57b6e4 41 PinName port_pin(PortName port, int pin_n)
mbed_official 381:5460fc57b6e4 42 {
mbed_official 381:5460fc57b6e4 43 return (PinName)(pin_n + (port << 4));
mbed_official 381:5460fc57b6e4 44 }
mbed_official 381:5460fc57b6e4 45
mbed_official 381:5460fc57b6e4 46 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
mbed_official 381:5460fc57b6e4 47 {
mbed_official 381:5460fc57b6e4 48 uint32_t port_index = (uint32_t)port;
mbed_official 381:5460fc57b6e4 49
mbed_official 381:5460fc57b6e4 50 // Enable GPIO clock
mbed_official 381:5460fc57b6e4 51 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 381:5460fc57b6e4 52 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 381:5460fc57b6e4 53
mbed_official 381:5460fc57b6e4 54 // Fill PORT object structure for future use
mbed_official 381:5460fc57b6e4 55 obj->port = port;
mbed_official 381:5460fc57b6e4 56 obj->mask = mask;
mbed_official 381:5460fc57b6e4 57 obj->direction = dir;
mbed_official 381:5460fc57b6e4 58 obj->reg_in = &gpio->IDR;
mbed_official 381:5460fc57b6e4 59 obj->reg_out = &gpio->ODR;
mbed_official 381:5460fc57b6e4 60
mbed_official 381:5460fc57b6e4 61 port_dir(obj, dir);
mbed_official 381:5460fc57b6e4 62 }
mbed_official 381:5460fc57b6e4 63
mbed_official 381:5460fc57b6e4 64 void port_dir(port_t *obj, PinDirection dir)
mbed_official 381:5460fc57b6e4 65 {
mbed_official 381:5460fc57b6e4 66 uint32_t i;
mbed_official 381:5460fc57b6e4 67 obj->direction = dir;
mbed_official 381:5460fc57b6e4 68 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 381:5460fc57b6e4 69 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 381:5460fc57b6e4 70 if (dir == PIN_OUTPUT) {
mbed_official 381:5460fc57b6e4 71 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
mbed_official 381:5460fc57b6e4 72 } else { // PIN_INPUT
mbed_official 381:5460fc57b6e4 73 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 381:5460fc57b6e4 74 }
mbed_official 381:5460fc57b6e4 75 }
mbed_official 381:5460fc57b6e4 76 }
mbed_official 381:5460fc57b6e4 77 }
mbed_official 381:5460fc57b6e4 78
mbed_official 381:5460fc57b6e4 79 void port_mode(port_t *obj, PinMode mode)
mbed_official 381:5460fc57b6e4 80 {
mbed_official 381:5460fc57b6e4 81 uint32_t i;
mbed_official 381:5460fc57b6e4 82 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 381:5460fc57b6e4 83 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 381:5460fc57b6e4 84 pin_mode(port_pin(obj->port, i), mode);
mbed_official 381:5460fc57b6e4 85 }
mbed_official 381:5460fc57b6e4 86 }
mbed_official 381:5460fc57b6e4 87 }
mbed_official 381:5460fc57b6e4 88
mbed_official 381:5460fc57b6e4 89 void port_write(port_t *obj, int value)
mbed_official 381:5460fc57b6e4 90 {
mbed_official 381:5460fc57b6e4 91 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
mbed_official 381:5460fc57b6e4 92 }
mbed_official 381:5460fc57b6e4 93
mbed_official 381:5460fc57b6e4 94 int port_read(port_t *obj)
mbed_official 381:5460fc57b6e4 95 {
mbed_official 381:5460fc57b6e4 96 if (obj->direction == PIN_OUTPUT) {
mbed_official 381:5460fc57b6e4 97 return (*obj->reg_out & obj->mask);
mbed_official 381:5460fc57b6e4 98 } else { // PIN_INPUT
mbed_official 381:5460fc57b6e4 99 return (*obj->reg_in & obj->mask);
mbed_official 381:5460fc57b6e4 100 }
mbed_official 381:5460fc57b6e4 101 }
mbed_official 381:5460fc57b6e4 102
mbed_official 381:5460fc57b6e4 103 #endif