Sigve Sebastian Farstad / mbed-src

mbed w/ spi bug fig

Dependents:   display-puck

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/port_api.c@219:993c9b0acbcc, 2014-06-02 (annotated)

Committer:
mbed_official
Date:
Mon Jun 02 09:45:07 2014 +0100
Revision:
219:993c9b0acbcc
Synchronized with git revision cd741909614c52b886d34bad5007da2057c1a185



Full URL: https://github.com/mbedmicro/mbed/commit/cd741909614c52b886d34bad5007da2057c1a185/



[NUCLEO_F072RB] Add HAL files

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 219:993c9b0acbcc 1 /* mbed Microcontroller Library
mbed_official 219:993c9b0acbcc 2 *******************************************************************************
mbed_official 219:993c9b0acbcc 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 219:993c9b0acbcc 4 * All rights reserved.
mbed_official 219:993c9b0acbcc 5 *
mbed_official 219:993c9b0acbcc 6 * Redistribution and use in source and binary forms, with or without
mbed_official 219:993c9b0acbcc 7 * modification, are permitted provided that the following conditions are met:
mbed_official 219:993c9b0acbcc 8 *
mbed_official 219:993c9b0acbcc 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 219:993c9b0acbcc 10 * this list of conditions and the following disclaimer.
mbed_official 219:993c9b0acbcc 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 219:993c9b0acbcc 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 219:993c9b0acbcc 13 * and/or other materials provided with the distribution.
mbed_official 219:993c9b0acbcc 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 219:993c9b0acbcc 15 * may be used to endorse or promote products derived from this software
mbed_official 219:993c9b0acbcc 16 * without specific prior written permission.
mbed_official 219:993c9b0acbcc 17 *
mbed_official 219:993c9b0acbcc 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 219:993c9b0acbcc 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 219:993c9b0acbcc 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 219:993c9b0acbcc 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 219:993c9b0acbcc 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 219:993c9b0acbcc 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 219:993c9b0acbcc 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 219:993c9b0acbcc 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 219:993c9b0acbcc 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 219:993c9b0acbcc 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 219:993c9b0acbcc 28 *******************************************************************************
mbed_official 219:993c9b0acbcc 29 */
mbed_official 219:993c9b0acbcc 30 #include "port_api.h"
mbed_official 219:993c9b0acbcc 31 #include "pinmap.h"
mbed_official 219:993c9b0acbcc 32 #include "gpio_api.h"
mbed_official 219:993c9b0acbcc 33 #include "error.h"
mbed_official 219:993c9b0acbcc 34
mbed_official 219:993c9b0acbcc 35 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 219:993c9b0acbcc 36
mbed_official 219:993c9b0acbcc 37 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 219:993c9b0acbcc 38
mbed_official 219:993c9b0acbcc 39 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 219:993c9b0acbcc 40 // low nibble = pin number
mbed_official 219:993c9b0acbcc 41 PinName port_pin(PortName port, int pin_n) {
mbed_official 219:993c9b0acbcc 42 return (PinName)(pin_n + (port << 4));
mbed_official 219:993c9b0acbcc 43 }
mbed_official 219:993c9b0acbcc 44
mbed_official 219:993c9b0acbcc 45 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 219:993c9b0acbcc 46 uint32_t port_index = (uint32_t)port;
mbed_official 219:993c9b0acbcc 47
mbed_official 219:993c9b0acbcc 48 // Enable GPIO clock
mbed_official 219:993c9b0acbcc 49 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 219:993c9b0acbcc 50 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 219:993c9b0acbcc 51
mbed_official 219:993c9b0acbcc 52 // Fill PORT object structure for future use
mbed_official 219:993c9b0acbcc 53 obj->port = port;
mbed_official 219:993c9b0acbcc 54 obj->mask = mask;
mbed_official 219:993c9b0acbcc 55 obj->direction = dir;
mbed_official 219:993c9b0acbcc 56 obj->reg_in = &gpio->IDR;
mbed_official 219:993c9b0acbcc 57 obj->reg_out = &gpio->ODR;
mbed_official 219:993c9b0acbcc 58
mbed_official 219:993c9b0acbcc 59 port_dir(obj, dir);
mbed_official 219:993c9b0acbcc 60 }
mbed_official 219:993c9b0acbcc 61
mbed_official 219:993c9b0acbcc 62 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 219:993c9b0acbcc 63 uint32_t i;
mbed_official 219:993c9b0acbcc 64 obj->direction = dir;
mbed_official 219:993c9b0acbcc 65 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 219:993c9b0acbcc 66 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 219:993c9b0acbcc 67 if (dir == PIN_OUTPUT) {
mbed_official 219:993c9b0acbcc 68 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
mbed_official 219:993c9b0acbcc 69 } else { // PIN_INPUT
mbed_official 219:993c9b0acbcc 70 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 219:993c9b0acbcc 71 }
mbed_official 219:993c9b0acbcc 72 }
mbed_official 219:993c9b0acbcc 73 }
mbed_official 219:993c9b0acbcc 74 }
mbed_official 219:993c9b0acbcc 75
mbed_official 219:993c9b0acbcc 76 void port_mode(port_t *obj, PinMode mode) {
mbed_official 219:993c9b0acbcc 77 uint32_t i;
mbed_official 219:993c9b0acbcc 78 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 219:993c9b0acbcc 79 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 219:993c9b0acbcc 80 pin_mode(port_pin(obj->port, i), mode);
mbed_official 219:993c9b0acbcc 81 }
mbed_official 219:993c9b0acbcc 82 }
mbed_official 219:993c9b0acbcc 83 }
mbed_official 219:993c9b0acbcc 84
mbed_official 219:993c9b0acbcc 85 void port_write(port_t *obj, int value) {
mbed_official 219:993c9b0acbcc 86 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
mbed_official 219:993c9b0acbcc 87 }
mbed_official 219:993c9b0acbcc 88
mbed_official 219:993c9b0acbcc 89 int port_read(port_t *obj) {
mbed_official 219:993c9b0acbcc 90 if (obj->direction == PIN_OUTPUT) {
mbed_official 219:993c9b0acbcc 91 return (*obj->reg_out & obj->mask);
mbed_official 219:993c9b0acbcc 92 } else { // PIN_INPUT
mbed_official 219:993c9b0acbcc 93 return (*obj->reg_in & obj->mask);
mbed_official 219:993c9b0acbcc 94 }
mbed_official 219:993c9b0acbcc 95 }
mbed_official 219:993c9b0acbcc 96
mbed_official 219:993c9b0acbcc 97 #endif