Sensor works fine with simple codes, but not when embedded in a larger project

Question

Sensor works fine with simple codes, but not when embedded in a larger project

Opened this issue 4 years ago · 2 comments

Troubleshooting checklist

[ /] I read the README (on master) thoroughly
[ /] I ran the MAX30100_Tester and I'm going to paste the output down below
[/ ] I filled in all the details of my setup down below

Description of the issue

My MAX30100 sensor (board that contains the pull up resistor) works fine with your library and gives reading with simple codes like MAX30100_Minimal.ino.
However, when I tried to use the sensor in an actual project that contains multiple inputs/outputs, the sensor is not responding properly. When I run the code in debug mode, the sensor get connected successfully, but the sensor.update() did not print any thing on the serial monitor. Sometimes if I disconnect and reconnect the sensor board, 8 pair measurements are printed once on the serial monitor.
At first, I thought that the lengthy sketch maybe not satisfying the 100Hz sampling rate required by the sensor. I changed the code to update values from the analog and digital pins every half second, and this makes the loop() iteration taking only ~5ms. However, this did not solve the issue.

I do not suspect a hardware problem as the sensor works fine with the simple sketch. I do connect only SDA & SCL, but not interrupt which is not utilized by the library as I understand.

I am assuming a timing or interrupt problem, but could not figure it out. Any help would be appreciated.

Output from MAX30100_Tester example

Initializing MAX30100..Success
Enabling HR/SPO2 mode..done.
Configuring LEDs biases to 50mA..done.
Lowering the current to 7.6mA..done.
Shutting down..done.
Resuming normal operation..done.
Sampling die temperature..done, temp=34.31C
All test pass.

Press any key to go into sampling loop mode
IR=0 RED=15
IR=4 RED=0
IR=8 RED=0
IR=0 RED=0
IR=0 RED=1
IR=0 RED=15
IR=6 RED=0
IR=11 RED=0
IR=0 RED=0
IR=0 RED=0
IR=0 RED=13
IR=1 RED=0
IR=2 RED=0
IR=0 RED=0
IR=0 RED=7
IR=3 RED=6
IR=7 RED=0
IR=9 RED=0
IR=0 RED=0
IR=0 RED=10
IR=0 RED=3
IR=3 RED=0
IR=0 RED=0
IR=0 RED=2
IR=0 RED=12
IR=4 RED=0
IR=7 RED=0
IR=2 RED=0
IR=0 RED=1
IR=0 RED=7
IR=2 RED=0
IR=10 RED=0
IR=0 RED=0
IR=0 RED=5
IR=0 RED=4
IR=10 RED=0
IR=3 RED=0
IR=0 RED=0
IR=0 RED=11
IR=0 RED=3
IR=4 RED=0
IR=4 RED=0
IR=0 RED=3
IR=0 RED=3
IR=2 RED=5
IR=7 RED=0
IR=1 RED=0
IR=0 RED=4
IR=0 RED=7
IR=0 RED=3
IR=5 RED=0
IR=0 RED=0
IR=0 RED=1
IR=0 RED=13
IR=6 RED=0
IR=14 RED=0
IR=0 RED=0
IR=0 RED=0
IR=0 RED=12
IR=11 RED=0
IR=8 RED=0
IR=0 RED=0
IR=0 RED=13
IR=0 RED=8
IR=7 RED=0
IR=7 RED=0
IR=0 RED=0
IR=0 RED=13
IR=1 RED=13
IR=14 RED=0
IR=3 RED=0
IR=0 RED=4
IR=0 RED=13
IR=6 RED=1
IR=17 RED=0
IR=0 RED=0
IR=0 RED=11
IR=0 RED=28
IR=8 RED=13
IR=22 RED=10
IR=3 RED=29
IR=2 RED=56
IR=24 RED=77
IR=46 RED=88
IR=64 RED=118
IR=64 RED=165
IR=88 RED=236
IR=131 RED=311
IR=191 RED=398
IR=260 RED=532
IR=333 RED=720
IR=461 RED=947
IR=614 RED=1213
IR=819 RED=1527
IR=1051 RED=1940
IR=1343 RED=2442
IR=1697 RED=2989
IR=2087 RED=3506
IR=2504 RED=4075
IR=2964 RED=4715
IR=3481 RED=5491
IR=4147 RED=6488
IR=4939 RED=7705
IR=5843 RED=9091
IR=6719 RED=10446
IR=7308 RED=11264
IR=7195 RED=10761
IR=6471 RED=9985
IR=5902 RED=9748
IR=6150 RED=10133
IR=6431 RED=10399
IR=6608 RED=10583
IR=6744 RED=10705
IR=6833 RED=10775
IR=6869 RED=10829
IR=6904 RED=10890
IR=6970 RED=10981
IR=7031 RED=11090
IR=7090 RED=11186
IR=7156 RED=11284
IR=7174 RED=11231
IR=7211 RED=11251
IR=7266 RED=11274
IR=7305 RED=11315
IR=7338 RED=11358
IR=7383 RED=11359
IR=7390 RED=11357
IR=7409 RED=11333
IR=7401 RED=11316
IR=7389 RED=11311
IR=7411 RED=11326
IR=7418 RED=11331
IR=7420 RED=11317
IR=7430 RED=11309
IR=7441 RED=11299
IR=7435 RED=11302
IR=7429 RED=11281
IR=7444 RED=11278
IR=7433 RED=11262
IR=7447 RED=11261
IR=7438 RED=11252
IR=7450 RED=11261
IR=7442 RED=11247
IR=7436 RED=11260
IR=7438 RED=11231
IR=7454 RED=11215
IR=7449 RED=11208
IR=7452 RED=11207
IR=7442 RED=11190
IR=7436 RED=11189
IR=7444 RED=11171
IR=7442 RED=11159
IR=7415 RED=11150
IR=7423 RED=11152
IR=7428 RED=11136
IR=7426 RED=11151
IR=7421 RED=11128
IR=7426 RED=11112
IR=7413 RED=11096
IR=7427 RED=11092
IR=7422 RED=11082
IR=7422 RED=11067
IR=7414 RED=11064
IR=7416 RED=11055
IR=7418 RED=11056
IR=7407 RED=11036
IR=7405 RED=11019
IR=7403 RED=11016
IR=7395 RED=11000
IR=7400 RED=10999
IR=7395 RED=10984
IR=7393 RED=10966
IR=7390 RED=10971
IR=7394 RED=10957
IR=7399 RED=10957
IR=7369 RED=10948
IR=7380 RED=10944
IR=7398 RED=10924
IR=7389 RED=10928
IR=7379 RED=10925
IR=7383 RED=10913
IR=7371 RED=10906
IR=7371 RED=10885
IR=7375 RED=10895
IR=7360 RED=10890
IR=7375 RED=10887
IR=7352 RED=10882
IR=7359 RED=10873
IR=7378 RED=10872
IR=7380 RED=10862
IR=7369 RED=10855
IR=7371 RED=10850
IR=7363 RED=10845
IR=7360 RED=10851
IR=7365 RED=10830
IR=7355 RED=10843
IR=7363 RED=10847
IR=7364 RED=10836
IR=7370 RED=10821
IR=7363 RED=10812
IR=7356 RED=10815
IR=7357 RED=10799
IR=7346 RED=10802
IR=7360 RED=10808
IR=7353 RED=10791
IR=7339 RED=10810
IR=7362 RED=10806
IR=7347 RED=10797
IR=7356 RED=10798
IR=7355 RED=10800
IR=7345 RED=10805
IR=7355 RED=10788
IR=7356 RED=10790
IR=7352 RED=10776
IR=7356 RED=10771
IR=7360 RED=10778
IR=7345 RED=10769
IR=7355 RED=10752
IR=7337 RED=10758
IR=7334 RED=10725
IR=7315 RED=10733
IR=7297 RED=10723
IR=7297 RED=10716
IR=7301 RED=10699
IR=7267 RED=10682
IR=7248 RED=10656
IR=7255 RED=10656
IR=7244 RED=10649
IR=7235 RED=10640
IR=7227 RED=10629
IR=7197 RED=10637
IR=7214 RED=10624
IR=7226 RED=10612
IR=7205 RED=10627
IR=7212 RED=10622
IR=7211 RED=10615
IR=7201 RED=10614
IR=7199 RED=10604
IR=7184 RED=10602
IR=7182 RED=10590
IR=7184 RED=10573
IR=7182 RED=10583
IR=7177 RED=10550
IR=7180 RED=10572
IR=7178 RED=10558
IR=7182 RED=10576
IR=7186 RED=10565
IR=7179 RED=10566
IR=7195 RED=10562
IR=7170 RED=10541
IR=7177 RED=10548
IR=7170 RED=10539
IR=7175 RED=10553
IR=7166 RED=10535
IR=7171 RED=10532
IR=7169 RED=10543
IR=7179 RED=10541
IR=7162 RED=10535
IR=7170 RED=10533
IR=7164 RED=10527
IR=7172 RED=10525
IR=7172 RED=10520
IR=7155 RED=10519
IR=7163 RED=10517
IR=7159 RED=10522
IR=7164 RED=10529
IR=7167 RED=10508
IR=7139 RED=10512
IR=7159 RED=10507
IR=7181 RED=10504
IR=7162 RED=10505
IR=7159 RED=10494
IR=7151 RED=10487
IR=7160 RED=10495
IR=7163 RED=10478
IR=7160 RED=10496
IR=7189 RED=10511
IR=7176 RED=10521
IR=7188 RED=10530
IR=7173 RED=10545
IR=7199 RED=10574
IR=7226 RED=10629
IR=7255 RED=10731
IR=7332 RED=10940
IR=7463 RED=11486
IR=8387 RED=13277
IR=8856 RED=13901
IR=9249 RED=14447
IR=8835 RED=13018
IR=7068 RED=10049
IR=5144 RED=8192
IR=3615 RED=5230
IR=2544 RED=3751
IR=1771 RED=2683
IR=1266 RED=1969
IR=934 RED=1481
IR=709 RED=1144
IR=550 RED=916
IR=448 RED=755
IR=371 RED=624
IR=323 RED=523
IR=272 RED=456
IR=230 RED=399
IR=207 RED=359
IR=196 RED=315
IR=173 RED=279
IR=154 RED=256
IR=133 RED=238
IR=125 RED=212
IR=115 RED=199
IR=116 RED=185
IR=105 RED=174
IR=96 RED=174
IR=100 RED=168
IR=91 RED=146
IR=88 RED=142
IR=81 RED=139
IR=75 RED=143
IR=83 RED=131
IR=81 RED=124
IR=74 RED=111
IR=66 RED=110
IR=60 RED=111
IR=61 RED=100
IR=72 RED=86
IR=59 RED=94
IR=51 RED=96
IR=56 RED=96
IR=58 RED=89
IR=57 RED=85
IR=56 RED=84
IR=43 RED=84
IR=48 RED=93
IR=52 RED=77
IR=55 RED=85
IR=49 RED=85
IR=47 RED=92
IR=54 RED=94
IR=57 RED=84
IR=59 RED=85
IR=54 RED=92
IR=55 RED=102
IR=61 RED=98
IR=69 RED=100
IR=65 RED=101
IR=63 RED=107
IR=67 RED=119
IR=64 RED=115
IR=81 RED=121
IR=76 RED=125
IR=74 RED=134
IR=76 RED=149
IR=85 RED=139
IR=85 RED=126
IR=80 RED=131
IR=67 RED=145
IR=75 RED=146
IR=78 RED=134
IR=89 RED=128
IR=69 RED=135
IR=60 RED=133
IR=65 RED=144
IR=74 RED=119
IR=75 RED=123
IR=58 RED=133
IR=56 RED=142
IR=77 RED=140
IR=85 RED=133
IR=78 RED=136
IR=63 RED=168
IR=71 RED=175
IR=93 RED=186
IR=103 RED=181
IR=101 RED=206
IR=94 RED=235
IR=113 RED=267
IR=137 RED=289
IR=163 RED=297
IR=166 RED=340
IR=170 RED=384
IR=203 RED=423
IR=224 RED=442
IR=241 RED=463
IR=238 RED=486
IR=241 RED=520
IR=254 RED=548
IR=280 RED=552
IR=282 RED=572
IR=280 RED=604
IR=290 RED=648
IR=323 RED=700

Details of my setup

Arduino hardware: Arduino mega 2560
MAX30100 breakout: could not find anything written on the broad except MAX30100. It is the standard green one similar to 0530.
Arduino framework version: 1.8.12
MAX30100 library version: 1.2.1

Answer 1 · 2021-06-21T04:17:02.000Z

@Ardminu Have u made it work ? How dod u merge it with other sesnsors ?

Answer 2 · 2023-05-26T19:03:10.000Z

I'm facing similar issue. Is there any breakthrough to this problem? Help would be appreciated. I am using gy-max30100 with 3 different sensors all interfaced to esp32 but max does not show any values only zeroes. Its working fine when it is seperately interfaced with esp but not with other sensors.