All my Sony equipment accept this without problems. The biggest problem is how to achieve the periods of silence which separate each pulse. It is not possible to produce pure silence out of the serial port, as even if you send a 0x0 character, you still get pulses on the IR due to start and stop bits. I experimented with sending different characters on the assumption that if you can send a carrier at frequencies other than 40KHz, this might fool the device into accepting this as a silence.
This has the advantage in that you can produce one byteArray containing the data for the entire code, ensuring that the timing is accurate. The results however were not consistent, and I rejected this method in favour of pausing between sending the groups of 0xdb characters out of the serial port. Because the delay needed is in the order of us, there is no way that I found of consistently achieving this delay which is independent of processor speed. On my Jornada I didn't need to create a delay at all, as each call to the Write function seemed to take the correct amount of time.
Anyway, I am afraid to say that you may have to fiddle about to create a delay that works with your Pocket PC. If any one can work out a fool-proof way of achieving the correct delay for any device, please let me know! Sign in Email. Forgot your password? Search within: Articles Quick Answers Messages. Stats Nick Deacon Rate me:.
Please Sign up or sign in to vote. Copy Code. Nick Deacon Web Developer. Codemonkey85 Mar As I sit here, I contemplate the last words of Socrates: "I drank what? Pervaze Sep Ikarevska 4-Dec Alfie Gonzales Mar MulleDK19 Mar Eshani Chande Aug Imperatorn Apr Dinofx Dec Jose Cruz Dec Go to top. Layout: fixed fluid. Web Developer. United Kingdom. First Prev Next. COM port name Ation May Net Compact Framwork Codemonkey85 Mar I tried to reply to an earlier thread asking for VB.
Net help, but for some reason I couldn't post to it. I am trying to code a VB. Net Compact Framework application myself, to use the IR for remote control related operations. Does anyone have any knowledge in this? Automatic Delay Calculation Solved [modified] malcolmst Feb I made some code to figure out the delays at startup. Look for Similar Items by Category. All OSes.
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