/* * The MIT License (MIT) * * Author: Assam Boudjelthia * Copyright (c) 2018 Rohm Semiconductor. * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in * the Software without restriction, including without limitation the rights to * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of * the Software, and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include #include #include "bh1792.h" #include #include "upm_utilities.h" bool isStopped; #define SENSOR_ADDR 0x5b #define I2C_BUS 0 void signal_int_handler(int signo) { if (signo == SIGINT) isStopped = true; } void print_data(void *args) { bh1792_context dev = (bh1792_context)args; uint16_t led_on[32], led_off[32]; struct timespec now; clock_gettime(CLOCK_MONOTONIC_RAW, &now); if(bh1792_get_fifo_data(dev, led_off, led_on) == UPM_SUCCESS) { printf("\nFIFO data:\n"); for(int i = 0; i < 32; i++) printf("%d: off: %d, on: %d\n", i, led_off[i], led_on[i]); printf("timestamp %ld sec, %ld nsec\n", now.tv_sec, now.tv_nsec); } } int main(int argc, char **argv) { float meas_time; signal(SIGINT, signal_int_handler); bh1792_context dev = bh1792_init(I2C_BUS, SENSOR_ADDR); if (!dev) { printf("bh1792_init() failed.\n"); return -1; } printf("Software reset\n"); bh1792_soft_reset(dev); bh1792_enable_sync_mode(dev, 256, 32); bh1792_install_isr(dev, MRAA_GPIO_EDGE_FALLING, 33, &print_data, dev); bh1792_get_meas_time_ms(dev, &meas_time); bh1792_start_measurement(dev); printf("Heart beat sensor data\n"); while(!isStopped) { usleep(meas_time * 1000); } bh1792_close(dev); return 0; }