BME680 and DISPLAY not working parallel

[cyberman54]

BME680 sensor and OLED display both use i2c communication from separate parallel tasks.
Since esp32 i2c hal is not thread safe, we need a mutex solution for this, otherwise the i2c bus driver crashes.

[cyberman54]

fixed in v1.7.03 (currently in development-bme680-2 branch)

[mcapani]

good evening, I know that you have closed the trend, it is days that I have read everything, but I still have this problem, I have the ttgo t3 v 2.1 with display and a sensor bme 680. I have tried the various versions but I always have the probklema that together they don't work.

"Starting I2C bus scan ...
23: 06: 23.191> [I] [i2c.cpp: 78] i2c_scan (): 0 I2C device (s) found
23: 06: 23.494> [E] [display.cpp: 70] dp_setup (): FAILURE in src / display.cpp: 70
23: 06: 23.494> /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/tasks.c:4826 (xTaskNotify) - assert failed! "
can you please give me some advice ???
thank you

[cyberman54]

@mcapani Looks like a non working i2c bus. Please show your platformio.ini and paxcounter.conf and double check your pin mappings for SDA/SCL.

[mcapani]

; PlatformIO Project Configuration File
; NOTE: PlatformIO v5 is needed!
;
; Please visit documentation for the other options and examples
; http://docs.platformio.org/page/projectconf.html

; ---> SELECT THE TARGET PLATFORM HERE! <---
[board]
;halfile = generic.h
;halfile = ebox.h
;halfile = eboxtube.h
;halfile = ecopower.h
;halfile = heltec.h
;halfile = heltecv2.h
;halfile = heltecv21.h
;halfile = ttgov1.h
;halfile = ttgov2.h
;halfile = ttgov21old.h
halfile = ttgov21new.h
;halfile = ttgofox.h
;halfile = ttgobeam.h
;halfile = ttgobeam10.h
;halfile = ttgotdisplay.h
;halfile = ttgotwristband.h
;halfile = fipy.h
;halfile = lopy.h
;halfile = lopy4.h
;halfile = lolin32litelora.h
;halfile = lolin32lora.h
;halfile = lolin32lite.h
;halfile = wemos32oled.h
;halfile = wemos32matrix.h
;halfile = octopus32.h
;halfile = tinypico.h
;halfile = tinypicomatrix.h
;halfile = m5core.h
;halfile = m5fire.h
;halfile = olimexpoeiso.h

[platformio]
; upload firmware to board with usb cable
default_envs = usb
; upload firmware to a jfrog bintray repository
;default_envs = ota
; use latest versions of libraries
;default_envs = dev
description = Paxcounter is a device for metering passenger flows in realtime. It counts how many mobile devices are around.

[common]
; for release_version use max. 10 chars total, use any decimal format like "a.b.c"
release_version = 2.4.0
; DEBUG LEVEL: For production run set to 0, otherwise device will leak RAM while running!
; 0=None, 1=Error, 2=Warn, 3=Info, 4=Debug, 5=Verbose
debug_level = 3
extra_scripts = pre:build.py
otakeyfile = ota.conf
lorakeyfile = loraconf.h
lmicconfigfile = lmic_config.h
platform_espressif32 = espressif32@3.1.0
monitor_speed = 115200
upload_speed = 115200 ; set by build.py and taken from hal file
display_library = ; set by build.py and taken from hal file
lib_deps_lora =
mcci-catena/MCCI LoRaWAN LMIC library @ ^3.3.0
lib_deps_display =
bitbank2/OneBitDisplay @ 1.9.0
bitbank2/BitBang_I2C @ ^2.1.3
ricmoo/QRCode @ ^0.0.1
bodmer/TFT_eSPI @ ^2.3.51
lib_deps_ledmatrix =
seeed-studio/Ultrathin_LED_Matrix @ ^1.0.0
lib_deps_rgbled =
roboticsbrno/SmartLeds @ ^1.2.1
lib_deps_gps =
mikalhart/TinyGPSPlus @ ^1.0.2
lib_deps_sensors =
adafruit/Adafruit Unified Sensor @ ^1.1.4
adafruit/Adafruit BME280 Library @ ^2.1.1
adafruit/Adafruit BMP085 Library @ ^1.1.0
boschsensortec/BSEC Software Library @ 1.6.1480
https://github.com/ricki-z/SDS011.git
lib_deps_basic =
https://github.com/SukkoPera/Arduino-Rokkit-Hash.git
bblanchon/ArduinoJson @ ^6
jchristensen/Timezone @ ^1.2.4
makuna/RTC @ ^2.3.5
spacehuhn/SimpleButton
lewisxhe/AXP202X_Library @ ^1.1.3
geeksville/esp32-micro-sdcard @ ^0.1.1
256dpi/MQTT @ ^2.4.7
lib_deps_all =
${common.lib_deps_basic}
${common.lib_deps_lora}
${common.lib_deps_display}
${common.lib_deps_rgbled}
${common.lib_deps_gps}
${common.lib_deps_sensors}
${common.lib_deps_ledmatrix}
build_flags_basic =
-include "src/hal/${board.halfile}"
-include "src/paxcounter.conf"
'-DCORE_DEBUG_LEVEL=${common.debug_level}'
'-DLOG_LOCAL_LEVEL=${common.debug_level}'
'-DPROGVERSION="${common.release_version}"'
'-Wno-unknown-pragmas'
'-Wno-unused-variable'
build_flags_sensors =
-Llib/Bosch-BSEC/src/esp32/
-lalgobsec
build_flags_all =
${common.build_flags_basic}
${common.build_flags_sensors}
-mfix-esp32-psram-cache-issue

[env]
lib_ldf_mode = deep ; #632 Fixes compiler error with OneBitDisplay library
framework = arduino
board = esp32dev
board_build.partitions = min_spiffs.csv
upload_speed = ${common.upload_speed}
;upload_port = COM3
platform = ${common.platform_espressif32}
lib_deps = ${common.lib_deps_all}
build_flags = ${common.build_flags_all}
upload_protocol = ${common.upload_protocol}
extra_scripts = ${common.extra_scripts}
monitor_speed = ${common.monitor_speed}
monitor_filters = time, esp32_exception_decoder, default

[env:ota]
upload_protocol = custom

[env:usb]
upload_protocol = esptool

[env:dev]
upload_protocol = esptool
build_type = debug
platform = https://github.com/platformio/platform-espressif32.git#develop

paxcounter.conf
// clang-format off

// ----- Paxcounter user config file ------
//
// --> adapt to your needs and use case <--
//
// Note: After editing, before "build", use "clean" button in PlatformIO!

// Device options
#define VERBOSE 1 // set to 0 to silence the device, 1 enables additional debug output
#define BOOTMENU 0 // 0 = no bootmenu, 1 = device brings up boot menu before starting application
#define BOOTDELAY 30 // time [seconds] while devices waits in boot menue for input
#define BOOTTIMEOUT 300 // time [seconds] while devices waits to finish upload a firmware file

// Payload send cycle and encoding
#define SENDCYCLE 30 // payload send cycle [seconds/2], 0 .. 255
#define SLEEPCYCLE 0 // sleep time after a send cycle [seconds/2], 0 .. 255; 0 means no sleep [default = 0]
#define PAYLOAD_ENCODER 2 // payload encoder: 1=Plain, 2=Packed, 3=Cayenne LPP dynamic, 4=Cayenne LPP packed
#define COUNTERMODE 0 // 0=cyclic, 1=cumulative, 2=cyclic confirmed

// MAC sniffing parameters
#define MACFILTER 1 // set to 0 if you want to scan all devices, 1 to scan only devices with random MACs (aka smartphones) [default = 1]
#define BLECOUNTER 1 // set to 0 if you do not want to install the BLE sniffer
#define WIFICOUNTER 1 // set to 0 if you do not want to install the WIFI sniffer
#define MAC_QUEUE_SIZE 50 // size of MAC processing buffer (number of MACs) [default = 50]

// BLE scan parameters
#define BLESCANTIME 0 // [seconds] scan duration, 0 means infinite [default], see note below
#define BLESCANWINDOW 80 // [milliseconds] scan window, see below, 3 .. 10240, default 80ms
#define BLESCANINTERVAL 80 // [illiseconds] scan interval, see below, 3 .. 10240, default 80ms = 100% duty cycle

// Corona Exposure Notification Service(ENS) counter
#define COUNT_ENS 1 // count found number of devices which advertise Exposure Notification Service
// set to 1 if you want to enable this function [default=0]

// for additional sensors (added by some user)
#define HAS_SENSOR_1 1 // set to 1 to enable data transfer of user sensor #1 (also used as ENS counter) [default=0]
#define HAS_SENSOR_2 1 // set to 1 to enable data transfer of user sensor #2 [default=0]
#define HAS_SENSOR_3 0 // set to 1 to enable data transfer of user sensor #3 [default=0]

/* Note: guide for setting bluetooth parameters
*

• |< Scan Window > |< Scan Window > | ... |< Scan Window > |
• |< Scan Interval >|< Scan Interval >| ... |< Scan Interval >|
• |< Scan duration >|
• Scan duration sets how long scanning should be going on, before starting a new scan cycle. 0 means infinite (default).
• Scan window sets how much of the interval should be occupied by scanning. Should be >= BLESCANINTERVAL.
• Scan interval is how long scanning should be done on each channel. BLE uses 3 channels for advertising.
• -> Adjust these values with power consumption in mind if power is limited.
• -> Scan interval can be changed during runtime by remote comammand.
  */

// WiFi scan parameters
#define WIFI_CHANNEL_MIN 1 // start channel number where scan begings
#define WIFI_CHANNEL_MAX 13 // total channel number to scan
#define WIFI_MY_COUNTRY "EU" // select locale for Wifi RF settings
#define WIFI_CHANNEL_SWITCH_INTERVAL 50 // [seconds/100] -> 0,5 sec.

// LoRa payload default parameters
#define MEM_LOW 2048 // [Bytes] low memory threshold triggering a send cycle
#define RETRANSMIT_RCMD 5 // [seconds] wait time before retransmitting rcommand results
#define PAYLOAD_BUFFER_SIZE 51 // maximum size of payload block per transmit
#define PAYLOAD_OPENSENSEBOX 0 // send payload compatible to sensebox.de (swap geo position and pax data)
#define LORADRDEFAULT 5 // 0 .. 15, LoRaWAN datarate, according to regional LoRaWAN specs [default = 5]
#define LORATXPOWDEFAULT 14 // 0 .. 255, LoRaWAN TX power in dBm [default = 14]
#define MAXLORARETRY 500 // maximum count of TX retries if LoRa busy
#define SEND_QUEUE_SIZE 10 // maximum number of messages in payload send queue [1 = no queue]

// Hardware settings
#define RGBLUMINOSITY 30 // RGB LED luminosity [default = 30%]
#define DISPLAYREFRESH_MS 40 // OLED refresh cycle in ms [default = 40] -> 1000/40 = 25 frames per second
#define DISPLAYCONTRAST 80 // 0 .. 255, OLED display contrast [default = 80]
#define DISPLAYCYCLE 3 // Auto page flip delay in sec [default = 2] for devices without button
#define HOMECYCLE 30 // house keeping cycle in seconds [default = 30 secs]

// Settings for BME680 environmental sensor
#define BME_TEMP_OFFSET 5.0f // Offset sensor on chip temp <-> ambient temp [default = 5°C]
#define STATE_SAVE_PERIOD UINT32_C(360 * 60 * 1000) // update every 360 minutes = 4 times a day
#define BMECYCLE 1 // bme sensor read cycle in seconds [default = 1 secs]

// OTA settings
#define USE_OTA 1 // set to 0 to disable OTA update
#define WIFI_MAX_TRY 5 // maximum number of wifi connect attempts for OTA update [default = 20]
#define OTA_MAX_TRY 5 // maximum number of attempts for OTA download and write to flash [default = 3]
#define OTA_MIN_BATT 50 // minimum battery level for OTA [percent]
#define RESPONSE_TIMEOUT_MS 60000 // firmware binary server connection timeout [milliseconds]

// settings for syncing time of node with a time source (network / gps / rtc / timeserver)
#define TIME_SYNC_LORAWAN 1 // set to 1 to use LORA network as time source, 0 means off [default = 1]
#define TIME_SYNC_LORASERVER 0 // set to 1 to use LORA timeserver as time source, 0 means off [default = 0]
#define TIME_SYNC_INTERVAL 60 // sync time attempt each .. minutes from time source [default = 60], 0 means off
#define TIME_SYNC_INTERVAL_RETRY 10 // retry time sync after lost sync each .. minutes [default = 10], 0 means off
#define TIME_SYNC_SAMPLES 1 // number of time requests for averaging, max. 255
#define TIME_SYNC_CYCLE 60 // delay between two time samples [seconds]
#define TIME_SYNC_TIMEOUT 400 // timeout waiting for timeserver answer [seconds]
#define TIME_SYNC_COMPILEDATE 0 // set to 1 to use compile date to initialize RTC after power outage [default = 0]

// time zone, see https://github.com/JChristensen/Timezone/blob/master/examples/WorldClock/WorldClock.ino
#define DAYLIGHT_TIME {"CEST", Last, Sun, Mar, 2, 120} // Central European Summer Time
#define STANDARD_TIME {"CET ", Last, Sun, Oct, 3, 60} // Central European Standard Time

// Ports on which the device sends and listenes on LoRaWAN and SPI
#define COUNTERPORT 1 // counts
#define MACPORT 0 // network commands
#define RCMDPORT 2 // remote commands
#define STATUSPORT 2 // remote command results
#define CONFIGPORT 3 // config query results
#define GPSPORT 4 // gps - NOTE: set to 1 to send combined GPS+COUNTERPORT payload
#define BUTTONPORT 5 // button pressed signal
#define BEACONPORT 6 // beacon alarms
#define BMEPORT 7 // BME680 sensor
#define BATTPORT 8 // battery voltage
#define TIMEPORT 9 // time query and response
#define SENSOR1PORT 10 // user sensor #1
#define SENSOR2PORT 11 // user sensor #2
#define SENSOR3PORT 12 // user sensor #3

// Cayenne LPP Ports, see https://community.mydevices.com/t/cayenne-lpp-2-0/7510
#define CAYENNE_LPP1 1 // dynamic sensor payload (LPP 1.0)
#define CAYENNE_LPP2 2 // packed sensor payload (LPP 2.0)
#define CAYENNE_GPS 3 // full scale GPS payload
#define CAYENNE_ACTUATOR 10 // actuator commands
#define CAYENNE_DEVICECONFIG 11 // device period configuration
#define CAYENNE_SENSORREAD 13 // sensor period configuration
#define CAYENNE_SENSORENABLE 14 // sensor enable configuration

// MQTT settings, only needed if MQTT is used (#define HAS_MQTT in board hal file)
#define MQTT_ETHERNET 0 // select PHY: set 0 for Wifi, 1 for ethernet
#define MQTT_INTOPIC "paxin"
#define MQTT_OUTTOPIC "paxout"
#define MQTT_PORT 1883
#define MQTT_SERVER "public.cloud.shiftr.io"
#define MQTT_USER "public"
#define MQTT_PASSWD "public"
#define MQTT_RETRYSEC 20 // retry reconnect every 20 seconds
#define MQTT_KEEPALIVE 10 // keep alive interval in seconds
//#define MQTT_CLIENTNAME "my_paxcounter" // generated by default

[cyberman54]

@mcapani You selected ttgov21new.h board hal file. Are you sure you have this board? Please show a photo of your board to verify version is matching the selected hal file. Please show your modifications of this file for BME680 (you need to enable the external sensor in your board's hal file, see example in generic.h).

[mcapani]

[cyberman54]

Which pins did you use to connect the BME680?
Note: supply voltage of BME680 is 1,7 - 3,8 Volt. If you connected it to 5 Volt, you may have damaged it.

[mcapani]

I had the doubt .... in some guides I read that the module I purchased (photo1) can also be powered at 5v because the board adjusts the voltage automatically. in any case I connected 2 photos as shown in the attached diagram. 21/22 5v gdn

[cyberman54]

Please show your hal file. Did you add/edit the BME680 settings in hal file?

PS: on your photo it looks like the black wire is not connected to GND, but to 3V3?

[mcapani]

now works!!!! I'm a bit ashamed :) you have hit the problem !! great i did a lot of tests and it was trivially a 3.3V pin soldering error. I apologize for having lost this time, probably yesterday I was "melted". Thanks again. now I do the other tests and maybe we will talk about something else ..... ps it also works to detect immune apps (covid-italia) thanks

[cyberman54]

If you need support, please use discussion tab next time, not issue. Thx.

[mcapani]

ok thanks