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Coprocessor

Some modules require a coprocessor that handles specific tasks. The DUELink's engine includes facilities to help with updating the coprocessor's firmware and also includes special commands for cross-chip communication.

Specific module's Drivers are always included to simplify the use of the coprocessor. This page is provided for reference only.

Firmware Control​

These functions provided coprocessor firmware update facilities.

FunctionDescription
CoprocE()Erase entire coprocessor flash.
CoprocP()Initiate coprocessor firmware update: uses XModem 1K protocol.
CoprocS()Reset coprocessor.

The upload command simply opens up an xmodem 1K transfer through the main micro. Once CoprocP() is called, the system will start sending CCCCC... back, indicating the coprocessor is ready for a new firmware. Any xmodem software, including TeraTerm, can be used to send the firmware. Do not forget to select the 1K option.

We recommend using DUELink Programmer tool for updating the coprocessor firmware.

Application Command​

Once a coprocessor firmware is loaded, these commands provide means of data transfer between the system's main micro and the coprocessor.

FunctionDescription
CoprocV()Returns current firmware version on coprocessor.
CoprocW([data])Write a byte-array to coprocessor. Returns how many bytes were written successfully.
CoprocR([data])Read byte-array from coprocessor. Returns how many bytes were read successfully.