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_F103RB/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 52:a51c77007319 1 /* mbed Microcontroller Library
mbed_official 70:c1fbde68b492 2 *******************************************************************************
mbed_official 70:c1fbde68b492 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 70:c1fbde68b492 4 * All rights reserved.
mbed_official 52:a51c77007319 5 *
mbed_official 70:c1fbde68b492 6 * Redistribution and use in source and binary forms, with or without
mbed_official 70:c1fbde68b492 7 * modification, are permitted provided that the following conditions are met:
mbed_official 52:a51c77007319 8 *
mbed_official 70:c1fbde68b492 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 70:c1fbde68b492 10 * this list of conditions and the following disclaimer.
mbed_official 70:c1fbde68b492 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 70:c1fbde68b492 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 70:c1fbde68b492 13 * and/or other materials provided with the distribution.
mbed_official 70:c1fbde68b492 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 70:c1fbde68b492 15 * may be used to endorse or promote products derived from this software
mbed_official 70:c1fbde68b492 16 * without specific prior written permission.
mbed_official 52:a51c77007319 17 *
mbed_official 70:c1fbde68b492 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 70:c1fbde68b492 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 70:c1fbde68b492 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 70:c1fbde68b492 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 70:c1fbde68b492 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 70:c1fbde68b492 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 70:c1fbde68b492 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 70:c1fbde68b492 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 70:c1fbde68b492 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 70:c1fbde68b492 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 70:c1fbde68b492 28 *******************************************************************************
mbed_official 52:a51c77007319 29 */
mbed_official 52:a51c77007319 30 #include "port_api.h"
mbed_official 174:8bb9f3a33240 31
mbed_official 174:8bb9f3a33240 32 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 174:8bb9f3a33240 33
mbed_official 52:a51c77007319 34 #include "pinmap.h"
mbed_official 52:a51c77007319 35 #include "gpio_api.h"
mbed_official 285:31249416b6f9 36 #include "mbed_error.h"
mbed_official 52:a51c77007319 37
mbed_official 76:aeb1df146756 38 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 76:aeb1df146756 39
mbed_official 52:a51c77007319 40 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 52:a51c77007319 41 // low nibble = pin number
mbed_official 52:a51c77007319 42 PinName port_pin(PortName port, int pin_n) {
mbed_official 174:8bb9f3a33240 43 return (PinName)(pin_n + (port << 4));
mbed_official 52:a51c77007319 44 }
mbed_official 52:a51c77007319 45
mbed_official 52:a51c77007319 46 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 84:f54042cbc282 47 uint32_t port_index = (uint32_t)port;
mbed_official 52:a51c77007319 48
mbed_official 52:a51c77007319 49 // Enable GPIO clock
mbed_official 76:aeb1df146756 50 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 84:f54042cbc282 51 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 52:a51c77007319 52
mbed_official 52:a51c77007319 53 // Fill PORT object structure for future use
mbed_official 52:a51c77007319 54 obj->port = port;
mbed_official 52:a51c77007319 55 obj->mask = mask;
mbed_official 174:8bb9f3a33240 56 obj->direction = dir;
mbed_official 52:a51c77007319 57 obj->reg_in = &gpio->IDR;
mbed_official 174:8bb9f3a33240 58 obj->reg_out = &gpio->ODR;
mbed_official 52:a51c77007319 59
mbed_official 52:a51c77007319 60 port_dir(obj, dir);
mbed_official 52:a51c77007319 61 }
mbed_official 52:a51c77007319 62
mbed_official 52:a51c77007319 63 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 52:a51c77007319 64 uint32_t i;
mbed_official 52:a51c77007319 65 obj->direction = dir;
mbed_official 52:a51c77007319 66 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 52:a51c77007319 67 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 52:a51c77007319 68 if (dir == PIN_OUTPUT) {
mbed_official 52:a51c77007319 69 pin_function(port_pin(obj->port, i), STM_PIN_DATA(GPIO_Mode_Out_PP, 0));
mbed_official 174:8bb9f3a33240 70 } else { // PIN_INPUT
mbed_official 52:a51c77007319 71 pin_function(port_pin(obj->port, i), STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 52:a51c77007319 72 }
mbed_official 52:a51c77007319 73 }
mbed_official 174:8bb9f3a33240 74 }
mbed_official 52:a51c77007319 75 }
mbed_official 52:a51c77007319 76
mbed_official 52:a51c77007319 77 void port_mode(port_t *obj, PinMode mode) {
mbed_official 174:8bb9f3a33240 78 uint32_t i;
mbed_official 52:a51c77007319 79 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 52:a51c77007319 80 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 52:a51c77007319 81 pin_mode(port_pin(obj->port, i), mode);
mbed_official 52:a51c77007319 82 }
mbed_official 52:a51c77007319 83 }
mbed_official 52:a51c77007319 84 }
mbed_official 52:a51c77007319 85
mbed_official 52:a51c77007319 86 void port_write(port_t *obj, int value) {
mbed_official 52:a51c77007319 87 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
mbed_official 52:a51c77007319 88 }
mbed_official 52:a51c77007319 89
mbed_official 52:a51c77007319 90 int port_read(port_t *obj) {
Geremia 332:e299ae530e63 91 return (*obj->reg_in & obj->mask); // always read IDR, regardless of pin direction
mbed_official 52:a51c77007319 92 }
mbed_official 52:a51c77007319 93
mbed_official 52:a51c77007319 94 #endif