NXP Semiconductors K22F series - Page 319

Table 13-32. Parameters for FlashReadOnce Command
Byte # Parameter Description
0 - 3 index Index of the program once field (to read from)
4 - 7 byteCount Number of bytes to read and return to the caller
Process command
Host
Target
FlashReadOnce: index=0, byteCount=4
ACK:
0x5a a1
ACK:
0x5a a1
Generic Response:
0x5a a4 0c 00 c1 a5 0f 00 00 02 00 00 00 00 04 00 00 00
0x5a a4 10 00 3f 6f af 00 00 03 00 00 00 00 04 00 00 00 78 56 34 12
Figure 13-13. Protocol Sequence for FlashReadOnce Command
Table 13-33. FlashReadOnce Command Packet Format (Example)
FlashReadOnce Parameter Value
Framing packet start byte 0x5A
packetType 0xA4
length 0x0C 0x00
crc 0xC1 0xA5
Command packet commandTag 0x0F – FlashReadOnce
flags 0x00
reserved 0x00
parameterCount 0x02
index 0x0000_0000
byteCount 0x0000_0004
Table 13-34. FlashReadOnce Response Format (Example)
FlashReadOnce
Response
Parameter Value
Framing packet start byte 0x5A
packetType 0xA4
Table continues on the next page...
Chapter 13 Kinetis Flashloader
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 319