1 Reply Latest reply on Aug 21, 2017 5:14 AM by samp

    USB-I2C converter - CY8C9560A

    julio.ferreira_2636916

      Good Morning,

         

      I am using the CY8C9560A module and I am trying to communicate with it through I2C. Using the Arduino SDA and SCL works without any problems, but when I try to use the USB-I2C(http://www.robot-electronics.co.uk/htm/usb_i2c_tech.htm) and USB-ISS(https://www.robot-electronics.co.uk/htm/usb_iss_tech.htm) converters and I get no response. I know it only supports I2C standard (100Khz), anyway I set the USB-ISS to 100Khz but without success. Is something missing? For example some kind of configuration. Has anyone ever come across this problem?

         

      I am trying to send the following commands to address 0x40 (using Arduino is 0x20):
      To select port 0:
      55 40 18 01 00
      To set the port as output:
      55 40 1C 01 00
      Enable Outputs Alternately:
      55 40 08 01 AA
      But no luck.

         

      Sending equivalent commands through Arduino works fine:
      20 18 00
      20 1C 00
      20 08 AA

         

      Thank you so much.

         

      Greetings,
      Júlio Ferreira