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