tony_lth
Advanced Member level 5
ALL
I am confusion about the RS232 9pin female connector definition.
1. Could you clear if the following is right or not?
RS232 DB9 9pin female definition:
It should be DCE.
pin# pin name I/O
1 DCD O
2 TXD O
3 RXD I
4 DSR I
5 GND
6 DTR O
7 CTS I
8 RTS O
9 RI O
2. And I used MAX3237EIDBR to convert STM32 UART to RS232 by the aforesaid definition, but the RS232 can't do the flow control, why?
Thanks for your help.
Best,
Tony Liu
I am confusion about the RS232 9pin female connector definition.
1. Could you clear if the following is right or not?
RS232 DB9 9pin female definition:
It should be DCE.
pin# pin name I/O
1 DCD O
2 TXD O
3 RXD I
4 DSR I
5 GND
6 DTR O
7 CTS I
8 RTS O
9 RI O
2. And I used MAX3237EIDBR to convert STM32 UART to RS232 by the aforesaid definition, but the RS232 can't do the flow control, why?
Thanks for your help.
Best,
Tony Liu