74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
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/*
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ChibiOS - Copyright (C) 2006..2015 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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#include "ch.h"
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#include "hal.h"
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#define MMA8451_ADDR 0x1D
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#define WHO_AM_I 0x0D
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static bool i2cOk = false;
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static THD_WORKING_AREA(waThread1, 64);
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static THD_FUNCTION(Thread1, arg) {
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(void)arg;
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chRegSetThreadName("Blinker");
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while (TRUE) {
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if (i2cOk) {
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palSetPad(IOPORT3, 3);
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palTogglePad(IOPORT4, 4);
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} else {
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palSetPad(IOPORT4, 4);
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palTogglePad(IOPORT3, 3);
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}
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chThdSleepMilliseconds(500);
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}
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}
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/*
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* Application entry point.
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*/
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int main(void) {
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uint8_t tx[1], rx[1];
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/*
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* System initializations.
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* - HAL initialization, this also initializes the configured device drivers
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* and performs the board-specific initializations.
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* - Kernel initialization, the main() function becomes a thread and the
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* RTOS is active.
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*/
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halInit();
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chSysInit();
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palSetPad(IOPORT3, 3);
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palSetPad(IOPORT4, 4);
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palSetPad(IOPORT1, 2);
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i2cStart(&I2CD1, NULL);
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chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
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while (1) {
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tx[0] = WHO_AM_I;
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i2cMasterTransmitTimeout(&I2CD1, MMA8451_ADDR, tx, 1, rx, 1, TIME_INFINITE);
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i2cOk = (rx[0] == 0x1A) ? true : false;
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chThdSleepMilliseconds(2000);
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}
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}
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