/* * Author: Noel Eck * Copyright (c) 2016 Intel Corporation. * * 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 #include "max30100.h" #include "upm_utilities.h" bool shouldRun = true; void sig_handler(int signo) { if (signo == SIGINT) shouldRun = false; } void my_sample_handler(max30100_value sample, void* arg) { printf("My callback sample IR: %d R: %d\n", sample.IR, sample.R); } int main() { signal(SIGINT, sig_handler); //! [Interesting] max30100_context* sensor = max30100_init(0); if (!sensor) { printf("max30100_init() failed\n"); return -1; } /* Get the temperature */ float temp; if (max30100_get_temperature(sensor, &temp) != UPM_SUCCESS) { printf("max30100_get_temperature failed\n"); goto max30100_exit; } /* Get the version */ uint16_t version; if (max30100_get_version(sensor, &version) != UPM_SUCCESS) { printf("max30100_get_version failed\n"); goto max30100_exit; } printf("Temperature: %f C\n", temp); printf("Version: 0x%04x\n", version); /* Set high-res (50 Hz, 16-bit) */ if (max30100_set_high_res(sensor, true) != UPM_SUCCESS) { printf("max30100_set_high_res failed\n"); goto max30100_exit; } /* Set to sample SpO2 */ if (max30100_set_mode(sensor, MAX30100_MODE_SPO2_EN) != UPM_SUCCESS) { printf("max30100_set_mode failed\n"); goto max30100_exit; } /* Read continuously, stepping up the LED current every second, * us GPIO 0 as the interrupt pin */ max30100_sample_continuous(sensor, 0, false, &my_sample_handler, sensor); for (int i = MAX30100_LED_CURRENT_0_0_MA; i <= MAX30100_LED_CURRENT_50_0_MA && shouldRun; i++) { /* Toggle the LED current */ printf("Setting LED current = %d\n", i); if ( max30100_set_current(sensor, (MAX30100_LED_CURRENT)i, (MAX30100_LED_CURRENT)i) != UPM_SUCCESS ) { printf("max30100_set_current failed\n"); goto max30100_exit; } upm_delay(1); } /* Read individual samples */ for (int i = 0; i < 10; i++) { max30100_value samp; if (max30100_sample(sensor, &samp) != UPM_SUCCESS) { printf("max30100_sample failed\n"); goto max30100_exit; } printf("Single value IR: %d R: %d\n", samp.IR, samp.R); } max30100_exit: //! [Interesting] printf("Exiting\n"); max30100_close(sensor); return 0; }