SDK Development / mbed-src

mbed SDK library sources

Fork of mbed-src by mbed official

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_NUCLEO_L152RE/port_api.c@76:aeb1df146756, 2014-01-27 (annotated)

Committer:
mbed_official
Date:
Mon Jan 27 14:30:07 2014 +0000
Revision:
76:aeb1df146756
Child:
84:f54042cbc282
Synchronized with git revision a31ec9c5f7bcb5c8a1b2eced103f6a1dfa921abd



Full URL: https://github.com/mbedmicro/mbed/commit/a31ec9c5f7bcb5c8a1b2eced103f6a1dfa921abd/



Add NUCLEO_L152RE

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /* mbed Microcontroller Library
mbed_official 76:aeb1df146756 2 *******************************************************************************
mbed_official 76:aeb1df146756 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 76:aeb1df146756 4 * All rights reserved.
mbed_official 76:aeb1df146756 5 *
mbed_official 76:aeb1df146756 6 * Redistribution and use in source and binary forms, with or without
mbed_official 76:aeb1df146756 7 * modification, are permitted provided that the following conditions are met:
mbed_official 76:aeb1df146756 8 *
mbed_official 76:aeb1df146756 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 76:aeb1df146756 10 * this list of conditions and the following disclaimer.
mbed_official 76:aeb1df146756 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 76:aeb1df146756 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 76:aeb1df146756 13 * and/or other materials provided with the distribution.
mbed_official 76:aeb1df146756 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 76:aeb1df146756 15 * may be used to endorse or promote products derived from this software
mbed_official 76:aeb1df146756 16 * without specific prior written permission.
mbed_official 76:aeb1df146756 17 *
mbed_official 76:aeb1df146756 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 76:aeb1df146756 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 76:aeb1df146756 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 76:aeb1df146756 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 76:aeb1df146756 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 76:aeb1df146756 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 76:aeb1df146756 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 76:aeb1df146756 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 76:aeb1df146756 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 76:aeb1df146756 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 76:aeb1df146756 28 *******************************************************************************
mbed_official 76:aeb1df146756 29 */
mbed_official 76:aeb1df146756 30 #include "port_api.h"
mbed_official 76:aeb1df146756 31 #include "pinmap.h"
mbed_official 76:aeb1df146756 32 #include "gpio_api.h"
mbed_official 76:aeb1df146756 33 #include "error.h"
mbed_official 76:aeb1df146756 34
mbed_official 76:aeb1df146756 35 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 76:aeb1df146756 36
mbed_official 76:aeb1df146756 37 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 76:aeb1df146756 38
mbed_official 76:aeb1df146756 39 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 76:aeb1df146756 40 // low nibble = pin number
mbed_official 76:aeb1df146756 41 PinName port_pin(PortName port, int pin_n) {
mbed_official 76:aeb1df146756 42 return (PinName)(pin_n + (port << 4));
mbed_official 76:aeb1df146756 43 }
mbed_official 76:aeb1df146756 44
mbed_official 76:aeb1df146756 45 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 76:aeb1df146756 46 GPIO_TypeDef *gpio;
mbed_official 76:aeb1df146756 47
mbed_official 76:aeb1df146756 48 uint32_t port_index = (uint32_t)port; // (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 76:aeb1df146756 49
mbed_official 76:aeb1df146756 50 // Enable GPIO clock
mbed_official 76:aeb1df146756 51 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 76:aeb1df146756 52 gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 76:aeb1df146756 53
mbed_official 76:aeb1df146756 54 // Fill PORT object structure for future use
mbed_official 76:aeb1df146756 55 obj->port = port;
mbed_official 76:aeb1df146756 56 obj->mask = mask;
mbed_official 76:aeb1df146756 57 obj->direction = dir;
mbed_official 76:aeb1df146756 58 obj->reg_in = &gpio->IDR;
mbed_official 76:aeb1df146756 59 obj->reg_out = &gpio->ODR;
mbed_official 76:aeb1df146756 60
mbed_official 76:aeb1df146756 61 port_dir(obj, dir);
mbed_official 76:aeb1df146756 62 }
mbed_official 76:aeb1df146756 63
mbed_official 76:aeb1df146756 64 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 76:aeb1df146756 65 uint32_t i;
mbed_official 76:aeb1df146756 66 obj->direction = dir;
mbed_official 76:aeb1df146756 67 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 76:aeb1df146756 68 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 76:aeb1df146756 69 if (dir == PIN_OUTPUT) {
mbed_official 76:aeb1df146756 70 pin_function(port_pin(obj->port, i), STM_PIN_DATA(GPIO_Mode_OUT, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 71 }
mbed_official 76:aeb1df146756 72 else { // PIN_INPUT
mbed_official 76:aeb1df146756 73 pin_function(port_pin(obj->port, i), STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 74 }
mbed_official 76:aeb1df146756 75 }
mbed_official 76:aeb1df146756 76 }
mbed_official 76:aeb1df146756 77 }
mbed_official 76:aeb1df146756 78
mbed_official 76:aeb1df146756 79 void port_mode(port_t *obj, PinMode mode) {
mbed_official 76:aeb1df146756 80 uint32_t i;
mbed_official 76:aeb1df146756 81 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 76:aeb1df146756 82 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 76:aeb1df146756 83 pin_mode(port_pin(obj->port, i), mode);
mbed_official 76:aeb1df146756 84 }
mbed_official 76:aeb1df146756 85 }
mbed_official 76:aeb1df146756 86 }
mbed_official 76:aeb1df146756 87
mbed_official 76:aeb1df146756 88 void port_write(port_t *obj, int value) {
mbed_official 76:aeb1df146756 89 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
mbed_official 76:aeb1df146756 90 }
mbed_official 76:aeb1df146756 91
mbed_official 76:aeb1df146756 92 int port_read(port_t *obj) {
mbed_official 76:aeb1df146756 93 if (obj->direction == PIN_OUTPUT) {
mbed_official 76:aeb1df146756 94 return (*obj->reg_out & obj->mask);
mbed_official 76:aeb1df146756 95 }
mbed_official 76:aeb1df146756 96 else { // PIN_INPUT
mbed_official 76:aeb1df146756 97 return (*obj->reg_in & obj->mask);
mbed_official 76:aeb1df146756 98 }
mbed_official 76:aeb1df146756 99 }
mbed_official 76:aeb1df146756 100
mbed_official 76:aeb1df146756 101 #endif