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. Thu, 04 Dec 2008 10:50:25 -0800 http://backend.userland.com/rss092 How do I use the internal timer in the 8051 for my programs? I need to use it to send a delayed SMS.edit: I've changed the thread title. Before, I was <noauthor@nospam.com> http://www.8051projects.net/forum-t10549.html You would need to first initialise certain registers.The TMOD register has to be 1st loaded with a value indicating which(of the 4) modes the timer wi sashijoseph<sashijoseph@nospam.com> http://www.8051projects.net/forum-t10549.html Thanks. Uh..about the datasheet..I don't see it. Judgement<darknovat2t@nospam.com> http://www.8051projects.net/forum-t10549.html Yes you're right... the Atmel datasheet doesn't have it.Use this tut instead http://www.8052.com/tuttimer.phtml sashijoseph<sashijoseph@nospam.com> http://www.8051projects.net/forum-t10549.html Thanks. But now I have another problem. I can't end my while loop using return(1); It always gives me an error. Is there any way I can solve this? Or Judgement<darknovat2t@nospam.com> http://www.8051projects.net/forum-t10549.html well, u have to set the integer y to 1 to come out of the loop. The condition would be that u do that within the read_sms() function as the variable i pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t10549.html