118 Chapter 4: Programming CommandsRevision D 12/09
Erase all flash contents except boot sector
ASCII | GS SO |
Hexadecimal | 1D 0E |
Decimal | 29 14 |
Causes the entire flash memory to be erased.
The printer returns ACK if the command is successful; NAK if it is unsuccessful.
Exceptions
Available only in download mode.
Return main program flash CRC
ASCII | GS SI |
Hexadecimal | 1D 0F |
Decimal | 29 15 |
Returns the CRC calculated over the flash firmware code space.
The format of the response is ACK <low byte> <high byte>.
Erase selected flash sector
ASCII | GS DLE n |
Hexadecimal | 1D 10 n |
Decimal | 29 16 n |
Value and range of n:
Erases the previously selected sector. The printer transmits ACK when the sector has been erased. If the previous sector is not successfully erased, or if no sector was selected, the printer transmits NAK.
Exceptions
Available only in download mode.
Download to active flash sector
ASCII | GS DC1 aL aH cL cH d1… dn |
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Hexadecimal | 1D 11 aL aH cL cH d1… dn |
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Decimal | 29 17 aL aH cL cH d1… dn |
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Value of aL: | low byte of the address |
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Value of aH: | high byte of the address |
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Value of cL: | low byte of the count |
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Value of cH: | high byte of the count |
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Value of d: | data bytes, |
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Value of n (for number of data bytes) | Range of address (aL aH) | Range of count (cL cH) | |
((cH * 256) + cL) |
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Range: | Addresses run from 0 to 64K. |
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Contains a start address (aH x 256 + aL) and count (cH x 256 + cL) of binary bytes to load into the selected sector, followed by that many bytes. The start address is relative to the start of the sector. Addresses run from 0 to 64K.
The count must always be 256.
The printer may return one of several responses. ACK means that the data was written correctly and the host should transmit the next block. NAK means that, for some reason, the data was not written correctly. This could mean that
