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Appendix
Virtual Simulation Registers (VTREG)
The µVision3 Debugger implements virtual simulation registers (VTREG) that can be used to review the I²C communication on the Debugger command line level or within Debug and Signal functions. The following registers are implemented:
| VTREG | Description |
|---|---|
| I2C_IN |
Data sent from the I²C peripherals to the the
Microcontroller: Possible values in this register are:
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| I2C_OUT |
Data sent from the Microcontroller to the I²C peripherals.
Possible values in this register are:
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| I2C_CLK | Clock Frequency in Slave Mode in Hz, i.e. 100000 for 100KHz transmission |
µVision3 supports only the 8-bit address mode of the I²C bus. The 11-bit address modes are currently not implemented and also not supported by the most microcontroller devices.
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