lzbp li / mbed-stm32l0/l1-src

mbed library sources 只保留l0和l1系列的库，修改l0的库的晶振为12m

Dependents:   SANFAN_read_analog_value nucleo-wdg Nucleo_sleep_copy

Fork of mbed-src by mbed official

common/SPISlave.cpp@637:43dc64e319ca, 2016-04-29 (annotated)

Committer:
lzbpli
Date:
Fri Apr 29 08:15:28 2016 +0000
Revision:
637:43dc64e319ca
Parent:
212:34d62c0b2af6 
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Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 13:0645d8841f51 1 /* mbed Microcontroller Library
bogdanm 13:0645d8841f51 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 13:0645d8841f51 3 *
bogdanm 13:0645d8841f51 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 13:0645d8841f51 5 * you may not use this file except in compliance with the License.
bogdanm 13:0645d8841f51 6 * You may obtain a copy of the License at
bogdanm 13:0645d8841f51 7 *
bogdanm 13:0645d8841f51 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 13:0645d8841f51 9 *
bogdanm 13:0645d8841f51 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 13:0645d8841f51 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 13:0645d8841f51 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 13:0645d8841f51 13 * See the License for the specific language governing permissions and
bogdanm 13:0645d8841f51 14 * limitations under the License.
bogdanm 13:0645d8841f51 15 */
bogdanm 13:0645d8841f51 16 #include "SPISlave.h"
bogdanm 13:0645d8841f51 17
bogdanm 13:0645d8841f51 18 #if DEVICE_SPISLAVE
bogdanm 13:0645d8841f51 19
bogdanm 13:0645d8841f51 20 namespace mbed {
bogdanm 13:0645d8841f51 21
mbed_official 212:34d62c0b2af6 22 SPISlave::SPISlave(PinName mosi, PinName miso, PinName sclk, PinName ssel) :
mbed_official 212:34d62c0b2af6 23 _spi(),
mbed_official 212:34d62c0b2af6 24 _bits(8),
mbed_official 212:34d62c0b2af6 25 _mode(0),
mbed_official 212:34d62c0b2af6 26 _hz(1000000)
mbed_official 212:34d62c0b2af6 27 {
bogdanm 13:0645d8841f51 28 spi_init(&_spi, mosi, miso, sclk, ssel);
bogdanm 13:0645d8841f51 29 spi_format(&_spi, _bits, _mode, 1);
bogdanm 13:0645d8841f51 30 spi_frequency(&_spi, _hz);
bogdanm 13:0645d8841f51 31 }
bogdanm 13:0645d8841f51 32
bogdanm 13:0645d8841f51 33 void SPISlave::format(int bits, int mode) {
bogdanm 13:0645d8841f51 34 _bits = bits;
bogdanm 13:0645d8841f51 35 _mode = mode;
bogdanm 13:0645d8841f51 36 spi_format(&_spi, _bits, _mode, 1);
bogdanm 13:0645d8841f51 37 }
bogdanm 13:0645d8841f51 38
bogdanm 13:0645d8841f51 39 void SPISlave::frequency(int hz) {
bogdanm 13:0645d8841f51 40 _hz = hz;
bogdanm 13:0645d8841f51 41 spi_frequency(&_spi, _hz);
bogdanm 13:0645d8841f51 42 }
bogdanm 13:0645d8841f51 43
bogdanm 13:0645d8841f51 44 int SPISlave::receive(void) {
bogdanm 13:0645d8841f51 45 return(spi_slave_receive(&_spi));
bogdanm 13:0645d8841f51 46 }
bogdanm 13:0645d8841f51 47
bogdanm 13:0645d8841f51 48 int SPISlave::read(void) {
bogdanm 13:0645d8841f51 49 return(spi_slave_read(&_spi));
bogdanm 13:0645d8841f51 50 }
bogdanm 13:0645d8841f51 51
bogdanm 13:0645d8841f51 52 void SPISlave::reply(int value) {
bogdanm 13:0645d8841f51 53 spi_slave_write(&_spi, value);
bogdanm 13:0645d8841f51 54 }
bogdanm 13:0645d8841f51 55
bogdanm 13:0645d8841f51 56 } // namespace mbed
bogdanm 13:0645d8841f51 57
bogdanm 13:0645d8841f51 58 #endif