Download RL78/G13 Self-Programming

RL78/G13
Self-Programming (UART) CC-RL
5.10.10 Receive Packet Analysis
Figure 5.15 shows the flowchart for receive packet analysis.
R_MAIN_PacketAnalyze()
Initialize loop counter
count  0
checksum  0
Initialize checksum
No (Branch if argument: (rxlength – 1) ! = count)
Checksum computation complete?
Yes
Add to checksum
checksum 
checksum + rxbuf[count]
Update loop count
count++
No (Branch if rxbuf[rxlength] != checksum)
Checksum match?
Yes
No (Branch if rxbuf[0] is not START,
not WRITE, or not END)
Received command normal?
Yes
Set return value to received command
Set return value to abnormal termination
ret  rxdata[0]
ret  ERROR
return (ret)
Figure 5.10
R01AN2761EJ0100 Rev. 1.00
May 28, 2015
Receive Packet Analysis
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