Download To Active Flash Sector; Reset Firmware - CognitiveTPG A776 ColorPOS Programming Manual

Download to active flash sector

ASCII
GS DC1 aL aH cL cH d1... dn
Hexadecimal 1D 11 aL aH cL cH d1... dn
Decimal
29 17 aL aH cL cH d1... dn
Value of aL:
low byte of the address
Value of aH: high byte of the address
Value of cL:
low byte of the count
Value of cH:
high byte of the count
Value of d: data bytes, 0–255
Value of n (for number of data bytes)
((cH * 256) + cL)
Range: Addresses run from 0 to 64K.
Contains a start address (aH × 256 + aL) and count (cH × 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
communications failed or that the write to flash failed. The alternatives seem to be to retry the block or halt loading
and assume a hardware failure.
Related information
Available only in download mode.

Reset firmware

ASCII GS (SPACE)
Hexadecimal
1D FF
Decimal
29 255
Ends the load process and reboots the printer. Before executing this command, the printer should have firmware
loaded and external switches set to the runtime settings. Application software for downloading should prompt the
user to set the external switches and confirm before sending this command. If the downloading was started from a
diagnostic, the reboot will cause the printer to re-enter download state unless the external switches are changed.
A776-PG00001 D 07/13
Range of address (aL aH)
0000–FFFF (hexadecimal)
Chapter 5: Programming commands
Range of count (cL cH)
0001–FFFF (hexadecimal)
A776 (B780) Programming Guide
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