u-blox ZED-F9P Interface Description - Manual
Advance Information
data rate and temporarily stopping the GPS processing (see UBX-CFG-RST).
Header Class ID Length (Bytes) Payload Checksum
Message Structure
0xB5 0x62 0x21 0x09 12
see below
CK_A CK_B
Payload Contents:
Byte Offset Number
Format
Scaling Name Unit Description
0 U4 - startNumber - Index of first log entry to be transferred. If it is
larger than the index of the last available log
entry, then the first log entry to be transferred is
the last available log entry. The indexing of log
entries is zero based.
4 U4 - entryCount - Number of log entries to transfer in total
including the first entry to be transferred. If it is
larger than the log entries available starting
from the first entry to be transferred, then only
the available log entries are transferred followed
by a UBX-ACK-NAK. The maximum is 256.
8 U1 - version - The version of this message. Set to 0.
9 U1[3] - reserved1 - Reserved
5.11.9 UBX-LOG-STRING (0x21 0x04)
5.11.9.1 Store arbitrary string in on-board flash
Message
UBX-LOG-STRING
Description
Store arbitrary string in on-board flash
Firmware
Supported on:
• u-blox 9 with protocol version 27
Type
Command
Comment
This message can be used to store an arbitrary byte string in the on-board flash memory.
The maximum length that can be stored is 256 bytes.
Header Class ID Length (Bytes) Payload Checksum
Message Structure
0xB5 0x62 0x21 0x04 0 + 1*N
see below
CK_A CK_B
Payload Contents:
Byte Offset Number
Format
Scaling Name Unit Description
Start of repeated block (N times)
N*1 U1 - bytes - The string of bytes to be logged (maximum 256)
End of repeated block
UBX-18010854 - R04 Advance Information Page 100 of 259
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