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Hi, I am trying to send data from one controller to another directly ie without converting it into serial. Now when i send the data using 232 it is being received alright and the out put is also displayed. i am using putchar and getchar. but when i try this by directly connecting the Tx of first controller to Rx of next the data is either not being read properly or not being transfered properly. I'm just not getting what is going wrong. it should work i think i have even made the ground common for both the controllers.
Thanks Ajay.
Hi, The Project that i'm working on is just for experiment right now but hoping that it would be of some commercial use later on. i'll make sure i use some kind of protection as every one is saying that and most probably skip the TTL idea in favor of 232. Thanks Ajay
May I push this issue one direction.
One always should make a best effort for making the proper design with quality.
You will have enought bugs to sort without going itsi bitsi. If you make with quality, you know there is no problem.
We develop circuits and things that are sold - that is what I do - and we do not know how far these products are going to go. Do not take your chances. Maybe it is an electric pan that you are making, maybe is a garage door remote controller or a printer sharing box. All should be made with quality. You never know how important the failure may get.
Make it proper. Make it with pride.
Your sequence of postings show that you have not decided yet where you are going. I believe you are proud enought to make it proper. So put the max 232 in your board.
RE-design? No problem, after all, it will take you 30 minutes to make the max 232 circuit work.
You have only few boards to make the modification? No problem. Costs of max 232 are low.
You will have a comercial product? No problem, mas 232 will make comms reliable.
When you are seasoned enought, with a product that is mature, you will be able to cut the costs and still make it with quality.
Ed.