Figure 64. Algorithm For Setting Cts/Rts Flowchart - Wiznet W7500 Reference Manual

Figure 64 shows how software should use the RTS/CTR.
Initia l setting
Set RTS/CTS of UARTxCR
Set FEN of UARTxLCR_H
Set RxSel/TxSel of UARTxIFLS
RX
TX
CTS of UARTxFR =0? RXFE of UARTxFR =0?
Yes Yes
Send Tx da ta receive Rx da ta
Yes
BUSY of UARTxFR =1?
No
END
No
No

Figure 64. Algorithm for setting CTS/RTS flowchart

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W7500 Datasheet Version1.0.0