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75 lines
1.6 KiB
C
Executable File
75 lines
1.6 KiB
C
Executable File
/*
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* The MIT License (MIT)
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*
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* Author: Assam Boudjelthia
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* Copyright (c) 2018 Rohm Semiconductor.
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*
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* This program and the accompanying materials are made available under the
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* terms of the The MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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*/
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#include <stdio.h>
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#include <signal.h>
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#include "bh1792.h"
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#include <sys/time.h>
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#include "upm_utilities.h"
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bool isStopped;
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#define SENSOR_ADDR 0x5b
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#define I2C_BUS 0
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void signal_int_handler(int signo)
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{
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if (signo == SIGINT)
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isStopped = true;
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}
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void print_data(void *args)
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{
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bh1792_context dev = (bh1792_context)args;
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uint16_t led_on[32], led_off[32];
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struct timespec now;
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clock_gettime(CLOCK_MONOTONIC_RAW, &now);
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if(bh1792_get_fifo_data(dev, led_off, led_on) == UPM_SUCCESS) {
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printf("\nFIFO data:\n");
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for(int i = 0; i < 32; i++)
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printf("%d: off: %d, on: %d\n", i, led_off[i], led_on[i]);
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printf("timestamp %ld sec, %ld nsec\n", now.tv_sec, now.tv_nsec);
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}
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}
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int main(int argc, char **argv)
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{
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float meas_time;
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signal(SIGINT, signal_int_handler);
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bh1792_context dev = bh1792_init(I2C_BUS, SENSOR_ADDR);
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if (!dev) {
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printf("bh1792_init() failed.\n");
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return -1;
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}
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printf("Software reset\n");
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bh1792_soft_reset(dev);
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bh1792_enable_sync_mode(dev, 256, 32);
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bh1792_install_isr(dev, MRAA_GPIO_EDGE_FALLING, 33, &print_data, dev);
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bh1792_get_meas_time_ms(dev, &meas_time);
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bh1792_start_measurement(dev);
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printf("Heart beat sensor data\n");
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while(!isStopped) {
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usleep(meas_time * 1000);
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}
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bh1792_close(dev);
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return 0;
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} |