lloydi12345
Member
Hi, I am controlling an alarm through phone by using the serial communication feature of PIC16F877A. I am using ericsson t68i and everything works fine on the simulation and also on hyperterminal. Can you help me on the hardward part? I can't make the microcontroller and phone communicate to each other. I am just sending commands from the microcontroller to the phone but the phone can't accept it. I stripped the usb data cable that comes with the phone and it has 4 wires. Red, Blue, White and Black. I believe black is GND and red is Vcc. I tried supplying red wire with 4v connecting the gnd of the phone to the gnd of the board and tried connecting the blue wire to the microcontroller's TX, but it wont work. I tried also swapping blue and white. I tried shortening the wire that might cause the data loss but still no luck. I've based my project from this site: [SMS] Sony Ericsson PDU
Anyone tried this setup?
Regards,
lloydi
Anyone tried this setup?
Regards,
lloydi