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common/SPISlave.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 "SPISlave.h"
bogdanm 0:9b334a45a8ff 17
bogdanm 0:9b334a45a8ff 18 #if DEVICE_SPISLAVE
bogdanm 0:9b334a45a8ff 19
bogdanm 0:9b334a45a8ff 20 namespace mbed {
bogdanm 0:9b334a45a8ff 21
bogdanm 0:9b334a45a8ff 22 SPISlave::SPISlave(PinName mosi, PinName miso, PinName sclk, PinName ssel) :
bogdanm 0:9b334a45a8ff 23 _spi(),
bogdanm 0:9b334a45a8ff 24 _bits(8),
bogdanm 0:9b334a45a8ff 25 _mode(0),
bogdanm 0:9b334a45a8ff 26 _hz(1000000)
bogdanm 0:9b334a45a8ff 27 {
bogdanm 0:9b334a45a8ff 28 spi_init(&_spi, mosi, miso, sclk, ssel);
bogdanm 0:9b334a45a8ff 29 spi_format(&_spi, _bits, _mode, 1);
bogdanm 0:9b334a45a8ff 30 spi_frequency(&_spi, _hz);
bogdanm 0:9b334a45a8ff 31 }
bogdanm 0:9b334a45a8ff 32
bogdanm 0:9b334a45a8ff 33 void SPISlave::format(int bits, int mode) {
bogdanm 0:9b334a45a8ff 34 _bits = bits;
bogdanm 0:9b334a45a8ff 35 _mode = mode;
bogdanm 0:9b334a45a8ff 36 spi_format(&_spi, _bits, _mode, 1);
bogdanm 0:9b334a45a8ff 37 }
bogdanm 0:9b334a45a8ff 38
bogdanm 0:9b334a45a8ff 39 void SPISlave::frequency(int hz) {
bogdanm 0:9b334a45a8ff 40 _hz = hz;
bogdanm 0:9b334a45a8ff 41 spi_frequency(&_spi, _hz);
bogdanm 0:9b334a45a8ff 42 }
bogdanm 0:9b334a45a8ff 43
bogdanm 0:9b334a45a8ff 44 int SPISlave::receive(void) {
bogdanm 0:9b334a45a8ff 45 return(spi_slave_receive(&_spi));
bogdanm 0:9b334a45a8ff 46 }
bogdanm 0:9b334a45a8ff 47
bogdanm 0:9b334a45a8ff 48 int SPISlave::read(void) {
bogdanm 0:9b334a45a8ff 49 return(spi_slave_read(&_spi));
bogdanm 0:9b334a45a8ff 50 }
bogdanm 0:9b334a45a8ff 51
bogdanm 0:9b334a45a8ff 52 void SPISlave::reply(int value) {
bogdanm 0:9b334a45a8ff 53 spi_slave_write(&_spi, value);
bogdanm 0:9b334a45a8ff 54 }
bogdanm 0:9b334a45a8ff 55
bogdanm 0:9b334a45a8ff 56 } // namespace mbed
bogdanm 0:9b334a45a8ff 57
bogdanm 0:9b334a45a8ff 58 #endif