http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2009-01-07T21:32:53-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 HIcan you help me, Iam doing aproject on GSM controller using PIC 16F877 I use GSM phone like siemens connected with PORTC RC6 et RC7*communication RS232*pic 16F877application*Command relays PORTA and PORTEthis document ISIS Schematic http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 didou1987 this document ISIS Schematic sms_cont.rar http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 abbas1707 check whether your mobile phone is AT compatible or not http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 didou1987 my mobile phone Siemens serie 35 http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 Ajay Do you mean Siemens C35 handset?It does support AT Commands. you can test it by connecting it to PC's COM port.Open connection at 9600 8-n-1 and type "AT" and hit enter.you must get a reply "OK" from phone. test it! http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 didou1987 hi Ajaymy mobile Siemens C45 http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 didou1987 can you help me haw to send AT command From PIC 16F877 via RS232 connection to GSMthanks http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 GioppY Ajay wrote ...Do you mean Siemens C35 handset?It does support AT Commands. you can test it by connecting it to PC's COM port.Open connection at 9600 8-n-1 and type "AT" and hit enter.you must get a reply "OK" from phone. test it!For Siemens c35 - c45 the serial port works at 19200 baudRegards http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 didou1987 hiIt's OK with a hyperterminal I have a programme with PICBASIC but i want to translate this programme to mikroc (PIC 16F877) please help me thank you http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 abbas1707 why not write your own....try man... http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 Ajay there must be some problem with your hardware then.. try to program your PIC with a simple UART program to check if you UART is working properly or not. http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 didou1987 hiI tried the mobile phone using hyperterminal and it works properly and I tried an exemple with isis simalation and it works properlybut when I tried with pic in the real carte and i connect the GSM dierectly to RX and TX withe pic it doesn't work so how to connect GSM withe PIC pleas help me thank you. http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 didou1987 how to test the liaison RS232 http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 Ajay send 'a' continuously to UART, and see its output on hyperterminal. If you can see continuous string of 'a' then your serial circuit is working fine. http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 Ajay there is something wrong with your program, you might be sending some command which is causing the phone to go in search mode..recheck your program, if you are using assembly then check if you missed out any RET instruction. http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 didou1987 hiI am working with proteus simulation and my application work correctly but in the pratique reel carte it work for 2 secondes and the phone wil apear SEARCHING NETWORKand the programme bloked I put the reset button after it work for 2 secondes and the phone wil apear SEARCHING NETWORK I connect the phone pins directly to the pic pinsphone pic RX TX TX RXGND GND OSC=8MHZplease help me thankyou http://www.8051projects.net/forum-t6734.html 2009-01-07T21:32:53-08:00 didou1987 hi but the programme work with proteus similation what happened in the pratique?