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I²C Simulation
Virtual Simulation Registers (VTREG)
Simulating an I²C Device
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XPAGE VTREG
PPAGE VTREG
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Appendix
Virtual Simulation Registers (VTREG)
The µVision Debugger implements virtual simulation registers (VTREG) to review I²C communication on Debugger command line level or within Debug- and Signal Functions. The table shows the implemented registers.
| VTREG | Description |
|---|---|
| I2C_IN |
Data sent from I²C peripherals to the microcontroller.
Possible values are:
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| I2C_OUT |
Data sent from the microcontroller to I²C peripherals.
Possible values are:
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| I2C_CLK | Clock Frequency in Slave Mode in Hz, i.e. 100000 for 100KHz transmission |
µVision supports only the 8-bit address mode of the I²C bus. The 11-bit address modes are currently not implemented, and are also not supported by most microcontroller devices.
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