Renesas RL78/G13 - Flowchart of CSI Reception

RL78/G13 Handshake-based SPI Master Transmission/Reception
R01AN6883EJ0100 Rev.1.00 Page 35 of 38
June.15.23
5.6.17 Flowchart of CSI Reception
Figure 5-18 shows the flow of reception.
Figure 5-18 CSI Reception
CSI00_Receive()
Extract slave transmittable data
count and set it in g_num
return
g_num
>= RX_NUM
Enable interrupts
cnt = 0
cnt <=
RX_NUM+1
Is a return value from wait() 0?
cnt == 0
Set receive command in buffer for transmit data
Set dummy command in buffer for transmit data
R_CSI00_Send_Receive(&g_tx_dat
a, data_length, &g_rx_data)
Enter HALT mode
INTCSI00 occurred
cnt != 0
Store receive data
cnt ++
Set g_timeout_flag
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No