Zeroday Hong / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

common/BusIn.cpp@129:8a86d1aafce0, 2016-05-16 (annotated)

Committer:
mbed_official
Date:
Mon May 16 12:00:12 2016 +0100
Revision:
129:8a86d1aafce0
Parent:
0:9b334a45a8ff
Child:
144:ef7eb2e8f9f7
Synchronized with git revision 1d1f7ab1330d44cc5697c682173f7090a7d6b1cb



Full URL: https://github.com/mbedmicro/mbed/commit/1d1f7ab1330d44cc5697c682173f7090a7d6b1cb/



* [STM32F4] Get PCLK1 clock and set initial CAN frequency



CAN bus opperates on APB1 peripheral clock due to that we need to get PCLK1 freq

in *can_frequency()* function to properly calculate CAN speed and reconfigure

BS1, BS2, SJW bits.



Also to fully communicate with other ST platform we set the initical CAN

frequency to 100kb/s to be able to work with the slowest platform which supports

CAN, which is NUCLEO_F303K8 (APB1 is 32MHz).



Change-Id: I10af3aa8d715dd61c9d1b216ef813193449fecbd



* [STM32F4] Fix for CAN2 interrupt index



CAN2 interrupt index was wrong leading to not properly registering interrupt.

Having this fix allow us to pass MBED_30 test.



Change-Id: I33f9ca7c81286f7746a8f8352619e213bdf9756a

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #include "BusIn.h"
bogdanm 0:9b334a45a8ff 17 #include "mbed_assert.h"
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 namespace mbed {
bogdanm 0:9b334a45a8ff 20
bogdanm 0:9b334a45a8ff 21 BusIn::BusIn(PinName p0, PinName p1, PinName p2, PinName p3, PinName p4, PinName p5, PinName p6, PinName p7, PinName p8, PinName p9, PinName p10, PinName p11, PinName p12, PinName p13, PinName p14, PinName p15) {
bogdanm 0:9b334a45a8ff 22 PinName pins[16] = {p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15};
bogdanm 0:9b334a45a8ff 23
bogdanm 0:9b334a45a8ff 24 _nc_mask = 0;
bogdanm 0:9b334a45a8ff 25 for (int i=0; i<16; i++) {
bogdanm 0:9b334a45a8ff 26 _pin[i] = (pins[i] != NC) ? new DigitalIn(pins[i]) : 0;
bogdanm 0:9b334a45a8ff 27 if (pins[i] != NC) {
bogdanm 0:9b334a45a8ff 28 _nc_mask |= (1 << i);
bogdanm 0:9b334a45a8ff 29 }
bogdanm 0:9b334a45a8ff 30 }
bogdanm 0:9b334a45a8ff 31 }
bogdanm 0:9b334a45a8ff 32
bogdanm 0:9b334a45a8ff 33 BusIn::BusIn(PinName pins[16]) {
bogdanm 0:9b334a45a8ff 34 _nc_mask = 0;
bogdanm 0:9b334a45a8ff 35 for (int i=0; i<16; i++) {
bogdanm 0:9b334a45a8ff 36 _pin[i] = (pins[i] != NC) ? new DigitalIn(pins[i]) : 0;
bogdanm 0:9b334a45a8ff 37 if (pins[i] != NC) {
bogdanm 0:9b334a45a8ff 38 _nc_mask |= (1 << i);
bogdanm 0:9b334a45a8ff 39 }
bogdanm 0:9b334a45a8ff 40 }
bogdanm 0:9b334a45a8ff 41 }
bogdanm 0:9b334a45a8ff 42
bogdanm 0:9b334a45a8ff 43 BusIn::~BusIn() {
bogdanm 0:9b334a45a8ff 44 for (int i=0; i<16; i++) {
bogdanm 0:9b334a45a8ff 45 if (_pin[i] != 0) {
bogdanm 0:9b334a45a8ff 46 delete _pin[i];
bogdanm 0:9b334a45a8ff 47 }
bogdanm 0:9b334a45a8ff 48 }
bogdanm 0:9b334a45a8ff 49 }
bogdanm 0:9b334a45a8ff 50
bogdanm 0:9b334a45a8ff 51 int BusIn::read() {
bogdanm 0:9b334a45a8ff 52 int v = 0;
bogdanm 0:9b334a45a8ff 53 for (int i=0; i<16; i++) {
bogdanm 0:9b334a45a8ff 54 if (_pin[i] != 0) {
bogdanm 0:9b334a45a8ff 55 v |= _pin[i]->read() << i;
bogdanm 0:9b334a45a8ff 56 }
bogdanm 0:9b334a45a8ff 57 }
bogdanm 0:9b334a45a8ff 58 return v;
bogdanm 0:9b334a45a8ff 59 }
bogdanm 0:9b334a45a8ff 60
bogdanm 0:9b334a45a8ff 61 void BusIn::mode(PinMode pull) {
bogdanm 0:9b334a45a8ff 62 for (int i=0; i<16; i++) {
bogdanm 0:9b334a45a8ff 63 if (_pin[i] != 0) {
bogdanm 0:9b334a45a8ff 64 _pin[i]->mode(pull);
bogdanm 0:9b334a45a8ff 65 }
bogdanm 0:9b334a45a8ff 66 }
bogdanm 0:9b334a45a8ff 67 }
bogdanm 0:9b334a45a8ff 68
bogdanm 0:9b334a45a8ff 69 #ifdef MBED_OPERATORS
bogdanm 0:9b334a45a8ff 70 BusIn::operator int() {
bogdanm 0:9b334a45a8ff 71 return read();
bogdanm 0:9b334a45a8ff 72 }
bogdanm 0:9b334a45a8ff 73
bogdanm 0:9b334a45a8ff 74 DigitalIn& BusIn::operator[] (int index) {
bogdanm 0:9b334a45a8ff 75 MBED_ASSERT(index >= 0 && index <= 16);
bogdanm 0:9b334a45a8ff 76 MBED_ASSERT(_pin[index]);
bogdanm 0:9b334a45a8ff 77 return *_pin[index];
bogdanm 0:9b334a45a8ff 78 }
bogdanm 0:9b334a45a8ff 79
bogdanm 0:9b334a45a8ff 80 #endif
bogdanm 0:9b334a45a8ff 81
bogdanm 0:9b334a45a8ff 82 } // namespace mbed