62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* Not responding slave test
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*/
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#include <stdlib.h>
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#include "ch.h"
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#include "hal.h"
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#include "fake.h"
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/* input buffer */
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static uint8_t rx_data[2];
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/* temperature value */
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static int16_t temperature = 0;
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static i2cflags_t errors = 0;
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#define addr 0b1001100
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/* This is main function. */
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void request_fake(void){
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msg_t status = RDY_OK;
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systime_t tmo = MS2ST(4);
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i2cAcquireBus(&I2CD1);
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status = i2cMasterReceiveTimeout(&I2CD1, addr, rx_data, 2, tmo);
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i2cReleaseBus(&I2CD1);
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if (status == RDY_RESET){
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errors = i2cGetErrors(&I2CD1);
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if (errors == I2CD_ACK_FAILURE){
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/* there is no slave with given address on the bus, or it was die */
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return;
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}
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}
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else{
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temperature = (rx_data[0] << 8) + rx_data[1];
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}
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}
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