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Hi... I have a device with connected keypad to it via i2c protocol. it's a specific device and i don't have any info about what data exchange format they use. Have anyone tried to monitor an i2c bus with 8051 ? I need ideas or sources in C to paralell connect to the bus and monitor what kind of data is passing throw... Thank's
I'd check out the Philips site for app notes... Or what about the I2C page on this very site?
How about an oscilloscope. Our Agilent 54621 triggers on different serial formats including I2C but even an older plain jane model can probably be used by a skilled driver.
A cheap solution would be to use your ICE and a Cygnal or Philips chip with hardware IIC. The hardware IIC communicates through umpteen interrupts and which interrupt in the 'chain' you miss should tell the story. Erik
"A cheap solution would be to use your ICE and a Cygnal..." As the Cygnal parts have JTAG & on-chip debug, you wouldn't even need an ICE! Very cheap indeed!
"A cheap solution would be to use your ICE and a Cygnal..." As the Cygnal parts have JTAG & on-chip debug, you wouldn't even need an ICE! I consider the "JTAG & on-chip debug" the same (enough) to consider that an ICE. Erik
Some Tektronix 'scopes & logic analysers also support I2C: http://www.tektronix.co.jp/Products/Measurement_Prod/LA/I2C_SupUsers_Manual.pdf http://www.tek.com/Measurement/logic_analyzers/bus_support/tektronix_microsupports111003.pdf