Thank you for your time.
I'm currently trying to send i2c commands to see if the sensor is not broken or well connected;
These are the schematics for the sensorWhile talking with melexis tech support, he told me this
i2cdetect -l output this:Then if i run i2cdetect -f and the bus number (-f is for all the function the i2c bus has)
But than if I run i2cdetect -y number of bus I get results only on bus 20 and 21
If I try to send any command to all the busses ex. I get
I'm currently trying to send i2c commands to see if the sensor is not broken or well connected;
These are the schematics for the sensor
Is there a power up sequence for the CAM1 pins on the CM4? If I remember correctly the main camera pins are CAM1 and the secondary are the CAM0 ones.Definitely you should ensure the proper GPIO control to have a power-up sequence and DC/DC working, as well the RESET pin should be deasserted, otherwise the sensor will not ACK on I2C.
i2cdetect -l output this:
Code:
alessandro@unlook:~ $ i2cdetect -li2c-0 i2c i2c-22-mux (chan_id 0) I2C adapteri2c-1 i2c bcm2835 (i2c@7e804000) I2C adapteri2c-10 i2c i2c-22-mux (chan_id 1) I2C adapteri2c-20 i2c fef04500.i2c I2C adapteri2c-21 i2c fef09500.i2c I2C adapteri2c-22 i2c bcm2835 (i2c@7e205000) I2C adapterCode:
alessandro@unlook:~ $ i2cdetect -F 0Functionalities implemented by /dev/i2c-0:I2C yesSMBus Quick Command yesSMBus Send Byte yesSMBus Receive Byte yesSMBus Write Byte yesSMBus Read Byte yesSMBus Write Word yesSMBus Read Word yesSMBus Process Call yesSMBus Block Write yesSMBus Block Read noSMBus Block Process Call noSMBus PEC yesI2C Block Write yesI2C Block Read yesalessandro@unlook:~ $ i2cdetect -F 1Functionalities implemented by /dev/i2c-1:I2C yesSMBus Quick Command yesSMBus Send Byte yesSMBus Receive Byte yesSMBus Write Byte yesSMBus Read Byte yesSMBus Write Word yesSMBus Read Word yesSMBus Process Call yesSMBus Block Write yesSMBus Block Read noSMBus Block Process Call noSMBus PEC yesI2C Block Write yesI2C Block Read yesalessandro@unlook:~ $ i2cdetect -F 10Functionalities implemented by /dev/i2c-10:I2C yesSMBus Quick Command yesSMBus Send Byte yesSMBus Receive Byte yesSMBus Write Byte yesSMBus Read Byte yesSMBus Write Word yesSMBus Read Word yesSMBus Process Call yesSMBus Block Write yesSMBus Block Read noSMBus Block Process Call noSMBus PEC yesI2C Block Write yesI2C Block Read yesalessandro@unlook:~ $ i2cdetect -F 20Functionalities implemented by /dev/i2c-20:I2C yesSMBus Quick Command yesSMBus Send Byte yesSMBus Receive Byte yesSMBus Write Byte yesSMBus Read Byte yesSMBus Write Word yesSMBus Read Word yesSMBus Process Call yesSMBus Block Write yesSMBus Block Read noSMBus Block Process Call noSMBus PEC yesI2C Block Write yesI2C Block Read yesalessandro@unlook:~ $ i2cdetect -F 21Functionalities implemented by /dev/i2c-21:I2C yesSMBus Quick Command yesSMBus Send Byte yesSMBus Receive Byte yesSMBus Write Byte yesSMBus Read Byte yesSMBus Write Word yesSMBus Read Word yesSMBus Process Call yesSMBus Block Write yesSMBus Block Read noSMBus Block Process Call noSMBus PEC yesI2C Block Write yesI2C Block Read yesalessandro@unlook:~ $ i2cdetect -F 22Functionalities implemented by /dev/i2c-22:I2C yesSMBus Quick Command yesSMBus Send Byte yesSMBus Receive Byte yesSMBus Write Byte yesSMBus Read Byte yesSMBus Write Word yesSMBus Read Word yesSMBus Process Call yesSMBus Block Write yesSMBus Block Read noSMBus Block Process Call noSMBus PEC yesI2C Block Write yesI2C Block Read yesalessandro@unlook:~ $Code:
alessandro@unlook:~ $ i2cdetect -y 20 0 1 2 3 4 5 6 7 8 9 a b c d e f00: 08 09 0a 0b 0c 0d 0e 0f10: 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f20: 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f30: -- -- -- -- -- -- -- -- 38 39 3a 3b 3c 3d 3e 3f40: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --60: 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f70: 70 71 72 73 74 75 76 77alessandro@unlook:~ $ i2cdetect -y 21 0 1 2 3 4 5 6 7 8 9 a b c d e f00: 08 09 0a 0b 0c 0d 0e 0f10: 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f20: 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f30: -- -- -- -- -- -- -- -- 38 39 3a 3b 3c 3d 3e 3f40: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --60: 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f70: 70 71 72 73 74 75 76 77Code:
i2cget -y -f -a 22 0x09Error: Read failed
Statistics: Posted by alessandro.cursoli — Wed Mar 06, 2024 3:52 pm