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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

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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_NUCLEO_F302R8/port_api.c@125:23cc3068a9e4, 2014-03-19 (annotated)

Committer:
mbed_official
Date:
Wed Mar 19 10:15:22 2014 +0000
Revision:
125:23cc3068a9e4
Child:
135:067cc8ba23da
Synchronized with git revision ace35dfba3748c7cdc102eb38ec6b9e1067c3252



Full URL: https://github.com/mbedmicro/mbed/commit/ace35dfba3748c7cdc102eb38ec6b9e1067c3252/



[NUCLEO_F302R8] Add cmsis and hal files + change F401RE clock to 84MHz

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 125:23cc3068a9e4 1 /* mbed Microcontroller Library
mbed_official 125:23cc3068a9e4 2 *******************************************************************************
mbed_official 125:23cc3068a9e4 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 125:23cc3068a9e4 4 * All rights reserved.
mbed_official 125:23cc3068a9e4 5 *
mbed_official 125:23cc3068a9e4 6 * Redistribution and use in source and binary forms, with or without
mbed_official 125:23cc3068a9e4 7 * modification, are permitted provided that the following conditions are met:
mbed_official 125:23cc3068a9e4 8 *
mbed_official 125:23cc3068a9e4 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 125:23cc3068a9e4 10 * this list of conditions and the following disclaimer.
mbed_official 125:23cc3068a9e4 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 125:23cc3068a9e4 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 125:23cc3068a9e4 13 * and/or other materials provided with the distribution.
mbed_official 125:23cc3068a9e4 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 125:23cc3068a9e4 15 * may be used to endorse or promote products derived from this software
mbed_official 125:23cc3068a9e4 16 * without specific prior written permission.
mbed_official 125:23cc3068a9e4 17 *
mbed_official 125:23cc3068a9e4 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 125:23cc3068a9e4 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 125:23cc3068a9e4 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 125:23cc3068a9e4 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 125:23cc3068a9e4 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 125:23cc3068a9e4 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 125:23cc3068a9e4 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 125:23cc3068a9e4 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 125:23cc3068a9e4 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 125:23cc3068a9e4 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 125:23cc3068a9e4 28 *******************************************************************************
mbed_official 125:23cc3068a9e4 29 */
mbed_official 125:23cc3068a9e4 30 #include "port_api.h"
mbed_official 125:23cc3068a9e4 31 #include "pinmap.h"
mbed_official 125:23cc3068a9e4 32 #include "gpio_api.h"
mbed_official 125:23cc3068a9e4 33 #include "error.h"
mbed_official 125:23cc3068a9e4 34
mbed_official 125:23cc3068a9e4 35 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 125:23cc3068a9e4 36
mbed_official 125:23cc3068a9e4 37 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 125:23cc3068a9e4 38
mbed_official 125:23cc3068a9e4 39 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 125:23cc3068a9e4 40 // low nibble = pin number
mbed_official 125:23cc3068a9e4 41 PinName port_pin(PortName port, int pin_n) {
mbed_official 125:23cc3068a9e4 42 return (PinName)(pin_n + (port << 4));
mbed_official 125:23cc3068a9e4 43 }
mbed_official 125:23cc3068a9e4 44
mbed_official 125:23cc3068a9e4 45 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 125:23cc3068a9e4 46 uint32_t port_index = (uint32_t)port;
mbed_official 125:23cc3068a9e4 47
mbed_official 125:23cc3068a9e4 48 // Enable GPIO clock
mbed_official 125:23cc3068a9e4 49 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 125:23cc3068a9e4 50 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 125:23cc3068a9e4 51
mbed_official 125:23cc3068a9e4 52 // Fill PORT object structure for future use
mbed_official 125:23cc3068a9e4 53 obj->port = port;
mbed_official 125:23cc3068a9e4 54 obj->mask = mask;
mbed_official 125:23cc3068a9e4 55 obj->direction = dir;
mbed_official 125:23cc3068a9e4 56 obj->reg_in = &gpio->IDR;
mbed_official 125:23cc3068a9e4 57 obj->reg_out = &gpio->ODR;
mbed_official 125:23cc3068a9e4 58
mbed_official 125:23cc3068a9e4 59 port_dir(obj, dir);
mbed_official 125:23cc3068a9e4 60 }
mbed_official 125:23cc3068a9e4 61
mbed_official 125:23cc3068a9e4 62 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 125:23cc3068a9e4 63 uint32_t i;
mbed_official 125:23cc3068a9e4 64 obj->direction = dir;
mbed_official 125:23cc3068a9e4 65 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 125:23cc3068a9e4 66 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 125:23cc3068a9e4 67 if (dir == PIN_OUTPUT) {
mbed_official 125:23cc3068a9e4 68 pin_function(port_pin(obj->port, i), STM_PIN_DATA(GPIO_Mode_OUT, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 125:23cc3068a9e4 69 }
mbed_official 125:23cc3068a9e4 70 else { // PIN_INPUT
mbed_official 125:23cc3068a9e4 71 pin_function(port_pin(obj->port, i), STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 125:23cc3068a9e4 72 }
mbed_official 125:23cc3068a9e4 73 }
mbed_official 125:23cc3068a9e4 74 }
mbed_official 125:23cc3068a9e4 75 }
mbed_official 125:23cc3068a9e4 76
mbed_official 125:23cc3068a9e4 77 void port_mode(port_t *obj, PinMode mode) {
mbed_official 125:23cc3068a9e4 78 uint32_t i;
mbed_official 125:23cc3068a9e4 79 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 125:23cc3068a9e4 80 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 125:23cc3068a9e4 81 pin_mode(port_pin(obj->port, i), mode);
mbed_official 125:23cc3068a9e4 82 }
mbed_official 125:23cc3068a9e4 83 }
mbed_official 125:23cc3068a9e4 84 }
mbed_official 125:23cc3068a9e4 85
mbed_official 125:23cc3068a9e4 86 void port_write(port_t *obj, int value) {
mbed_official 125:23cc3068a9e4 87 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
mbed_official 125:23cc3068a9e4 88 }
mbed_official 125:23cc3068a9e4 89
mbed_official 125:23cc3068a9e4 90 int port_read(port_t *obj) {
mbed_official 125:23cc3068a9e4 91 if (obj->direction == PIN_OUTPUT) {
mbed_official 125:23cc3068a9e4 92 return (*obj->reg_out & obj->mask);
mbed_official 125:23cc3068a9e4 93 }
mbed_official 125:23cc3068a9e4 94 else { // PIN_INPUT
mbed_official 125:23cc3068a9e4 95 return (*obj->reg_in & obj->mask);
mbed_official 125:23cc3068a9e4 96 }
mbed_official 125:23cc3068a9e4 97 }
mbed_official 125:23cc3068a9e4 98
mbed_official 125:23cc3068a9e4 99 #endif