A VNC1L programming application should perform the following steps:
| · | Initialise programmer UART with the following characteristics:
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Data bits: 8
Stop bits: 1
Parity: None
Handshaking: RTS/CTS
| · | Synchronise the programmer and VNC1L
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Send an Echo command (0xFF)
Wait for a response
Read bytes available
UNTIL last byte received is the Echo response (0xFF)
Send alternative Echo command (0xFA)
LOOP
Check for data available
If data available, read it. Otherwise wait for data
UNTIL Last byte received is the Echo response (0xFA)
If last byte received was the alternative Echo response, then synchronisation complete
If last byte received was not the alternative Echo response, repeat synchronisation
| · | Set desired VNC1L Baud rate and timer value of 6000 using the Set Data Variables command
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| · | Set programmer UART to the same Baud rate as the VNC1L
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| · | Program flash from file
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Read a block of data from the firmware ROM file
Send Write Flash Block command for Count bytes (128 bytes required)
Wait for acknowledgement (0x02)
Write the block of data to the VNC1L
UNTIL the complete firmware file has been written to the Flash memory
| · | Verify the Flash contents
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Read a block of data from the firmware ROM file
Send the Read Flash Block command requesting Count bytes (128 bytes required)
Wait for acknowledgement (0x02)
Wait for Count bytes to be returned
Compare the data from the ROM file and the Flash memory
If they do not match, flag an error
UNTIL the entire firmware file has been compared to the entire Flash memory OR an error was found
| · | Flash programming complete
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