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I got some troubles with my Pi Zero W (Stretch) and my SparkFun AS7265x Sensor(https://cdn.sparkfun.com/assets/c/2/9/0 ... asheet.pdf): I connected them over my GPIOs and created an I2C Bus:

  • I detected my sensor at 0x49 via "i2cdetect -y 1"
  • I configured my rapsi-config (enable i2c)
  • I installed the drivers i2c-tools, used the mods i2c-dev and i2c-bcm2708 and edited to my boot/config.txt additionally "dtoverlay=i2c1-bcm2708" and put pi to group i2c for no carrying any longer a sudo with myself.....

--> Now I want to read out some registers e.g. the temperature (0x06) but everything I get is a 0x00 ("i2cget -y 1 0x49 0x06 b") --> The only register I can read is 0x00 and there I get 0x80 (but default should be 0x40)

so I tried pyserial, but when I want to use: serial.Serial("/dev/i2c-1", 115200) --> I get a cannot configure port error 25 if I write cat /dev/i2c-1 (as explained in some stack overflow topics) I get an I/O-Error.....

I am pretty keyless now.... Maybe there is a clock stretching, but none is mentioned in the data sheet ??

Would be likely if anybody could help me :)

Cheers!

raise SerialException("Could not configure port: {}".format(msg)) 
 serial.serialutil.SerialException: Could not configure port: (25, 'Inappropriate ioctl for device')
Pang
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medicus3453
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  • Well, python's Serial.serial is for uart, so that won't work with i2c. Have you got another i2c device you could try? – domen May 24 '19 at 07:50
  • on Monday I will receive an UART adapter to connect to my sensor, but this includes some soldering work, which is usually untypical for SparkFun devices...? -- Usually simply plug and play devices ... – medicus3453 May 26 '19 at 08:55

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