BME280 sensor locks ESP8266 and prevents booting
Posted: Fri Jun 17, 2022 4:28 amI have an AZDelivery Node MCU ESP8266 [1] linked via SPI to a Adafruit BME280 Temperature, Humidity and Pressure Sensor [2] that when the data connections are made it prevents the ESP from booting and communicating with the IDE. The error from Visual Code Studio is:
I have:
The code is taken from the BME280test [3] example with appropriate changes made to the pin numbers and line 31 commented out to disable i2c with either 31/32 uncommented to enable SPI. Below is the circuit I am using with the following pinout:
So, it seems to be an error with the ESP8266 and BME280 that blocks any sort of communication with the board but I have nothing to go on. I'm going to try a ESP32 and see if it gives a different response. If anyone has any idea or has experienced something similar I would welcome some insights.
Apologies for the duplication with https://electronics.stackexchange.com/q ... ts-booting. I'm keen to get and answer but struggled to decide on the best home for the question.
[1]: https://www.az-delivery.de/en/products/nodemcu
[2]: https://learn.adafruit.com/adafruit-bme ... t/overview
[3]: https://github.com/adafruit/Adafruit_BM ... 80test.ino
Code: Select all
Arduino: 1.8.19 (Windows Store 1.8.57.0) (Windows 10), Board: "Generic ESP8266 Module, 80 MHz,
Flash, Disabled (new aborts on oom), Disabled, All SSL ciphers (most compatible), 32KB cache +
32KB IRAM (balanced), Use pgm_read macros for IRAM/PROGMEM, dtr (aka nodemcu), 26 MHz, 40MHz,
DOUT (compatible), 1MB (FS:64KB OTA:~470KB), 2, nonos-sdk 2.2.1+100 (190703), v2 Lower Memory,
Disabled, None, Only Sketch, 115200"
Executable segment sizes:
ICACHE : 32768 - flash instruction cache
IROM : 231724 - code in flash (default or ICACHE_FLASH_ATTR)
IRAM : 26793 / 32768 - code in IRAM (IRAM_ATTR, ISRs...)
DATA : 1496 ) - initialized variables (global, static) in RAM/HEAP
RODATA : 876 ) / 81920 - constants (global, static) in RAM/HEAP
BSS : 25608 ) - zeroed variables (global, static) in RAM/HEAP
Sketch uses 260889 bytes (27%) of program storage space. Maximum is 958448 bytes.
Global variables use 27980 bytes (34%) of dynamic memory, leaving 53940 bytes for local
variables. Maximum is 81920 bytes.
esptool.py v3.0
Serial port COM11
Connecting........_____....._____....._____....._____....._____....._____....._____
Traceback (most recent call last):
File "..packages\esp8266\hardware\esp8266\3.0.2/tools/upload.py", line 66, in <module> esptool.main(cmdline)
File "..packages/esp8266/hardware/esp8266/3.0.2/tools/esptool\esptool.py", line 3552, in main
esp.connect(args.before, args.connect_attempts)
File "../packages/esp8266/hardware/esp8266/3.0.2/tools/esptool\esptool.py", line 529, in
connect raise FatalError('Failed to connect to %s: %s' % (self.CHIP_NAME, last_error))
esptool.FatalError: Failed to connect to ESP8266: Timed out waiting for packet header
esptool.FatalError: Failed to connect to ESP8266: Timed out waiting for packet headerI have:
- - Tried the board, circuit and code in the Arduino IDE and same error so I do not believe it to be a Visual Code Studio specific problem.
- Tried a different board - same error so I do not believe the board to be faulty.
- Tried a different sensor - same error so I do not believe the sensor to be faulty
- Disconnected the data lines - board boots, sensor shows power and correctly the node reports that the board cannot be found. So this would be the expected behaviour.
- Uploaded the basic block sketch to the ESP and it works correctly.
- Tried circuit and sensor with an Arduino Uno and it works.
The code is taken from the BME280test [3] example with appropriate changes made to the pin numbers and line 31 commented out to disable i2c with either 31/32 uncommented to enable SPI. Below is the circuit I am using with the following pinout:
- - 3v3/Vin N/A Red Vin
- GND N/A Black GND
- D5 HSPI SCK White SCK (GPIO 14)
- D6 HSPI MISO Green SDO (GPIO 12)
- D7 HSPI MOSI Blue SDI (GPIO 13)
- D8 HSPI CS Yellow CS (GPIO 15)
So, it seems to be an error with the ESP8266 and BME280 that blocks any sort of communication with the board but I have nothing to go on. I'm going to try a ESP32 and see if it gives a different response. If anyone has any idea or has experienced something similar I would welcome some insights.
Apologies for the duplication with https://electronics.stackexchange.com/q ... ts-booting. I'm keen to get and answer but struggled to decide on the best home for the question.
[1]: https://www.az-delivery.de/en/products/nodemcu
[2]: https://learn.adafruit.com/adafruit-bme ... t/overview
[3]: https://github.com/adafruit/Adafruit_BM ... 80test.ino