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@332:e299ae530e63, 2014-09-27 (annotated)

Committer:
Geremia
Date:
Sat Sep 27 11:16:28 2014 +0000
Revision:
332:e299ae530e63
Parent:
285:31249416b6f9 
- fix F411 F334 systeminit when HSI used; - STMs PortInOut port.read() always read input data register (real external pin state) even if direction is output (same as other platforms)

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) {
Geremia 332:e299ae530e63 90 return (*obj->reg_in & obj->mask); // always read IDR, regardless of pin direction
mbed_official 181:a4cbdfbbd2f4 91 }
mbed_official 181:a4cbdfbbd2f4 92
mbed_official 181:a4cbdfbbd2f4 93 #endif