Renesas RL78/G13 - Flowchart of CSI Status Check

RL78/G13 Handshake-based SPI Master Transmission/Reception
R01AN6883EJ0100 Rev.1.00 Page 32 of 38
June.15.23
5.6.14 Flowchart of CSI Status Check
Figure 5-15 shows the flow of status checking.
Figure 5-15 CSI Status Check
CSI00_Sta
tus_check()
cnt = 0
return
cnt <= 2
Is a return value from wait() 0?
Enable interrupts
cnt == 0
Set status check command
Set dummy command
R_CSI00_Send_Receive(&g_tx_data,
data_length, &g_rx_data)
Enter HALT mode
INTCSI00 occurred
cnt > 0
Store receive data
cnt == 2
Is receive data appropriate?
Set g_status_confirmation_flag
cnt ++
Set g_timeout_flag
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No