UART1 can receive date but can not send (TX not working)

[蒋亚]

Hi,

i'm using BBBW to receive GPS signal, i enable uart1 and using following commands:

config-pin P9.24 uart

config-pin P9.26 uart

stty -F /dev/ttyO1 -echo 115200

after doing that i used minicom and the signal date can be seen, but only received. 

the problem is, that i need to send the date to another devices, but there is no date in Pin 24. 

How can i solve this ? Thanks in advance