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DS90UB964-Q1: I2C Read Through DS90UB913 Remote Slave Script

Ting Ye
Genius 11800 points
Part Number: DS90UB964-Q1
Other Parts Discussed in Thread: OPT3001, ALP, USB2ANY

Hello Team,

May I know if there is DS90UB964 I2C read through DS90UB913 remote slave script that you can share? 

Thank you.

Regards,

Ting

  • 0
    TI__Mastermind 30515 points

    Ting,

    you can refer to snlu177.pdf (UB964 EVM guides, page23) to get one example script to enable remote slave I2C access.

    best regards,

    Steven

  • 0 in reply to Steven(Shenzhen) Shi
    TI__Genius 11800 points
    Hello Jun-qiang,

    Thank you!
    I will give a try.

    Regards,
    Ting
  • 0 in reply to Ting Ye
    TI__Genius 11800 points

    Hello Jun-qiang,

    I use 913 and 914 evm with coaxial cable and a I2C as remote salve connected at 913 side.

    I am able to read the remote slave. Thank you.

    But may I confirm with you that by using Script board.ReadI2C we can only read 2-byte?

    Regards,

    Ting

  • 0 in reply to Ting Ye
    TI__Mastermind 30515 points
    Hi Ting, what is the meaning of "we can only read 2-byte"? thanks.

    best regards,
    Steven
  • 0 in reply to Steven(Shenzhen) Shi
    TI__Genius 11800 points

    Thank you for helping!

    Regards,

    Ting

  • 0 in reply to Ting Ye
    TI__Genius 11800 points

    Below is the script I use to get 0x7F read out. Please change the filename extension to py.

    Fullscreen readopt.txt Download 
    
devID = 0xc0; #USB2ANY connect to 914 DES.
print "devID =", hex(devID);

board.WriteI2C(devID, 0x03, 0xE9) #enable I2C in general config 0x03.
board.WriteI2C(devID, 0x1F, 0x01) #set Mode 0x1F to 100MHz 10-bit.
print "0x06 SER ID =", hex(board.ReadI2C(devID, 0x06)) #DES 0x06 should auto load SER ID.
board.WriteI2C(devID, 0x07, 0xB0) #set SER Alias 0x07 to same value as SER ID if no duplicated IC device on bus.
board.WriteI2C(devID, 0x08, 0x88) #set Slave ID 0x08 to remote slave physical ID.
board.WriteI2C(devID, 0x10, 0x88) #set Slave Alias 0x10 to same value as Slave ID if no duplicated IC device on bus.

print "0x07 SER Alias =", hex(board.ReadI2C(devID, 0x07))
print "0x08 Slave ID =", hex(board.ReadI2C(devID, 0x08))
print "0x10 Slave Alias =", hex(board.ReadI2C(devID, 0x10))
print "remote slave 0x7F =", hex(board.ReadI2C(0x88, 0x7f))

  • 0 in reply to Ting Ye
    TI__Mastermind 30515 points
    Ting,
    you mean the value of OPT3001's register 0x7F is 0x3001?

    Best regards,
    Steven
  • 0 in reply to Steven(Shenzhen) Shi
    TI__Genius 11800 points
    Hello Jun-qiang,

    Yes, OPT3001's register 0x7F is 0x3001.
    But I think our tool ALP Script can only read and write 1-byte.
    May I know if it is correct?

    Thank you.
    Regards,
    Ting
  • 0 in reply to Ting Ye
    TI__Guru** 108390 points

    Hi,

    if you are using the USB2ANY then you can read only 1-byte, yes.

    Hamzeh

  • 0 in reply to Hamzeh Jaradat
    TI__Genius 11800 points
    Hello Hamzeh,

    Thank you for confirming it!

    Regards,
    Ting