Geremia G / mbed-src

- fix F411 F334 systeminit when HSI used - portinout always read IDR regardless of port direction

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_L053R8/port_api.c@285:31249416b6f9, 2014-08-15 (annotated)

Committer:
mbed_official
Date:
Fri Aug 15 16:30:08 2014 +0100
Revision:
285:31249416b6f9
Parent:
251:de9a1e4ffd79
Child:
332:e299ae530e63
Synchronized with git revision 601712595f49bbd2a2771c52cf3e84c9c7a591af



Full URL: https://github.com/mbedmicro/mbed/commit/601712595f49bbd2a2771c52cf3e84c9c7a591af/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 181:a4cbdfbbd2f4 1 /* mbed Microcontroller Library
mbed_official 181:a4cbdfbbd2f4 2 *******************************************************************************
mbed_official 181:a4cbdfbbd2f4 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 181:a4cbdfbbd2f4 4 * All rights reserved.
mbed_official 181:a4cbdfbbd2f4 5 *
mbed_official 181:a4cbdfbbd2f4 6 * Redistribution and use in source and binary forms, with or without
mbed_official 181:a4cbdfbbd2f4 7 * modification, are permitted provided that the following conditions are met:
mbed_official 181:a4cbdfbbd2f4 8 *
mbed_official 181:a4cbdfbbd2f4 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 181:a4cbdfbbd2f4 10 * this list of conditions and the following disclaimer.
mbed_official 181:a4cbdfbbd2f4 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 181:a4cbdfbbd2f4 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 181:a4cbdfbbd2f4 13 * and/or other materials provided with the distribution.
mbed_official 181:a4cbdfbbd2f4 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 181:a4cbdfbbd2f4 15 * may be used to endorse or promote products derived from this software
mbed_official 181:a4cbdfbbd2f4 16 * without specific prior written permission.
mbed_official 181:a4cbdfbbd2f4 17 *
mbed_official 181:a4cbdfbbd2f4 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 181:a4cbdfbbd2f4 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 181:a4cbdfbbd2f4 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 181:a4cbdfbbd2f4 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 181:a4cbdfbbd2f4 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 181:a4cbdfbbd2f4 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 181:a4cbdfbbd2f4 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 181:a4cbdfbbd2f4 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 181:a4cbdfbbd2f4 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 181:a4cbdfbbd2f4 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 181:a4cbdfbbd2f4 28 *******************************************************************************
mbed_official 181:a4cbdfbbd2f4 29 */
mbed_official 181:a4cbdfbbd2f4 30 #include "port_api.h"
mbed_official 181:a4cbdfbbd2f4 31 #include "pinmap.h"
mbed_official 181:a4cbdfbbd2f4 32 #include "gpio_api.h"
mbed_official 285:31249416b6f9 33 #include "mbed_error.h"
mbed_official 181:a4cbdfbbd2f4 34
mbed_official 181:a4cbdfbbd2f4 35 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 181:a4cbdfbbd2f4 36
mbed_official 181:a4cbdfbbd2f4 37 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 181:a4cbdfbbd2f4 38
mbed_official 181:a4cbdfbbd2f4 39 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 181:a4cbdfbbd2f4 40 // low nibble = pin number
mbed_official 181:a4cbdfbbd2f4 41 PinName port_pin(PortName port, int pin_n) {
mbed_official 181:a4cbdfbbd2f4 42 return (PinName)(pin_n + (port << 4));
mbed_official 181:a4cbdfbbd2f4 43 }
mbed_official 181:a4cbdfbbd2f4 44
mbed_official 181:a4cbdfbbd2f4 45 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 181:a4cbdfbbd2f4 46 uint32_t port_index = (uint32_t)port;
mbed_official 181:a4cbdfbbd2f4 47
mbed_official 181:a4cbdfbbd2f4 48 // Enable GPIO clock
mbed_official 181:a4cbdfbbd2f4 49 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 181:a4cbdfbbd2f4 50 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 181:a4cbdfbbd2f4 51
mbed_official 181:a4cbdfbbd2f4 52 // Fill PORT object structure for future use
mbed_official 181:a4cbdfbbd2f4 53 obj->port = port;
mbed_official 181:a4cbdfbbd2f4 54 obj->mask = mask;
mbed_official 181:a4cbdfbbd2f4 55 obj->direction = dir;
mbed_official 181:a4cbdfbbd2f4 56 obj->reg_in = &gpio->IDR;
mbed_official 181:a4cbdfbbd2f4 57 obj->reg_out = &gpio->ODR;
mbed_official 181:a4cbdfbbd2f4 58
mbed_official 181:a4cbdfbbd2f4 59 port_dir(obj, dir);
mbed_official 181:a4cbdfbbd2f4 60 }
mbed_official 181:a4cbdfbbd2f4 61
mbed_official 181:a4cbdfbbd2f4 62 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 181:a4cbdfbbd2f4 63 uint32_t i;
mbed_official 181:a4cbdfbbd2f4 64 obj->direction = dir;
mbed_official 181:a4cbdfbbd2f4 65 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 181:a4cbdfbbd2f4 66 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 181:a4cbdfbbd2f4 67 if (dir == PIN_OUTPUT) {
mbed_official 181:a4cbdfbbd2f4 68 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
mbed_official 181:a4cbdfbbd2f4 69 } else { // PIN_INPUT
mbed_official 181:a4cbdfbbd2f4 70 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 181:a4cbdfbbd2f4 71 }
mbed_official 181:a4cbdfbbd2f4 72 }
mbed_official 181:a4cbdfbbd2f4 73 }
mbed_official 181:a4cbdfbbd2f4 74 }
mbed_official 181:a4cbdfbbd2f4 75
mbed_official 181:a4cbdfbbd2f4 76 void port_mode(port_t *obj, PinMode mode) {
mbed_official 181:a4cbdfbbd2f4 77 uint32_t i;
mbed_official 181:a4cbdfbbd2f4 78 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 181:a4cbdfbbd2f4 79 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 181:a4cbdfbbd2f4 80 pin_mode(port_pin(obj->port, i), mode);
mbed_official 181:a4cbdfbbd2f4 81 }
mbed_official 181:a4cbdfbbd2f4 82 }
mbed_official 181:a4cbdfbbd2f4 83 }
mbed_official 181:a4cbdfbbd2f4 84
mbed_official 181:a4cbdfbbd2f4 85 void port_write(port_t *obj, int value) {
mbed_official 181:a4cbdfbbd2f4 86 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
mbed_official 181:a4cbdfbbd2f4 87 }
mbed_official 181:a4cbdfbbd2f4 88
mbed_official 181:a4cbdfbbd2f4 89 int port_read(port_t *obj) {
mbed_official 181:a4cbdfbbd2f4 90 if (obj->direction == PIN_OUTPUT) {
mbed_official 181:a4cbdfbbd2f4 91 return (*obj->reg_out & obj->mask);
mbed_official 181:a4cbdfbbd2f4 92 } else { // PIN_INPUT
mbed_official 181:a4cbdfbbd2f4 93 return (*obj->reg_in & obj->mask);
mbed_official 181:a4cbdfbbd2f4 94 }
mbed_official 181:a4cbdfbbd2f4 95 }
mbed_official 181:a4cbdfbbd2f4 96
mbed_official 181:a4cbdfbbd2f4 97 #endif