I hope you can help me…
I have developed a own simple modem with the WP7607 module.
My designe with the WP7607 is almost completely working.
There is just one problem…
I can’t establish a connection over UART with the modul. There is just no response from the WP7607 when i send them AT-Commands.
Everything else what i need is working. > SIM-Card detect, WAN connection … and also talking with the module over USB by use of AT-Commands!
… just the UART1 isn’t working.
I have connect: UART1_RX ; UART1_TX ; UART1_CTS ; UART1_RTS (all come or go to a level-shifter [1,8V >< 5V])
… UART1_CTS and UART1_RTS is connected togehter after the level-shifter.
I don’t have connect: UART1_DSR ; UART1_DCD ; UART1_DTR ; UART1_RI (all floating)
I don’t understand where is the problem…
Does i need to configure the UART1 over some AT-command at first?
Many thanks for your effort!
Hope somebody has an interesting idea…