26
Hardware preparation
Change the jumper position of con407 as the following.
RV402
RV401
SW401
RV403
CON407
Digital
Board
1
2
(Default)
CON407
5
6
(RTS mode only)
Figure 7.5. Hardware preparation for Hardware flow control
REMARK : RTS mode means the mode which uses RTS signal for radio control.
The following modes use the RTS signal.
Hardware flow control at Auto mode
Dumb mode
7.1.4. None (No flow control)
Flow control between the modem and the DTE can be turned off altogether. With flow
control disabled inputted data from the DTE will be continuously transmitted, but there
is no protection offered by the modem to prevent its internal buffers from overflowing.
If an overflow occurs within the modem, serial data is lost and the data transfer
becomes corrupted. Transmission of limited data that has less size than available buffer
memory of the Slave MCU of Modem should be used. Pin connection is the same as
software flow control, handshaking is not used.
