Hi Hans, I am this week on holiday this week but woke up with an idea. I hacked the rc_nec_decoder software that I made and changed it into a bit-timer.
I am not able to test this but it works as follows: 1. It starts when an infra red receiver, connected to the external interrupt goes low (active). That is, a signal is received. 2. It measures all bursts (H) and pauses (L) of the remote control signal until no signal is received for 65 ms (timer 1 overflow) 3. After the overflow of timer 1 it wil indicate that something is received. All bits are stored in us in a large array of words. The only thing you need to do is get it working for your PIC where you have to initialize timer 1 to run at 1 MHz. This because it gives all times in us. If you run it at another clock you have to recalculate what the bit times are. As said, this compiles, it is not tested. Try it out. Sample file is attached. Do not look too much at the code of the rc_timer.jal file since as said it is just a hack. I may want to make is nice so it could be used as a library if there is a need for something like this The sample files prints 'H:' followed by the bit times in us. In this case 'H' means that there was an infra red signal (receiver is active low). Kind regards, Rob ________________________________ Van: [email protected] <[email protected]> namens hans <[email protected]> Verzonden: zondag 3 september 2023 19:51 Aan: jallib <[email protected]> Onderwerp: Re: [jallib] DAIKIN REMOTE Hello Rob, I know these sources and used this info at the time. Unfortunately didn't work. I then used my graphical trick and discovered minimal differences which apparently are crucial and depend on the type of device and type of remote control. The values I found my way worked perfectly and so did the unit I made. But only to switch the heating on and off in time. Because my sight is getting less and less, I was dreading working this way again. Unfortunately, I didn't manage to get the series of zeros and ones right on my screen. regards Hans Op zondag 3 september 2023 om 19:23:27 UTC+2 schreef Rob CJ: Hi Hans, Your plan is to send Daikin commands to your airconditioning and you need some software to get the commands that you need? I think the commands you need can be found on the internet (you will nog be the first person who wants to do that). If you have the commands from the internet, then the only thing remaining is sending out the data according to the protocol, correct? I found this by Googlw: https://github.com/blafois/Daikin-IR-Reverse or https://www.instructables.com/Reverse-engineering-of-an-Air-Conditioning-control/ [https://ci4.googleusercontent.com/proxy/BRqNF9wimtB3JgB2gRLqH6MeRXKaArMTywfOY--zNHK7tTpl9zz1MTA5qQ7O9zjhNIiLCb-Lan29LGQtxe3xL65xyDGMsCssywpNqaRU9i31Nv3h7StxQDc2u-eE157HpDhk9OmtuJ2VYC-QX3jBrKzN_2KfJik=s0-d-e1-ft#https://content.instructables.com/FKG/HT5J/HRTWKE84/FKGHT5JHRTWKE84.jpg?auto=webp&frame=1&width=2100]<https://www.instructables.com/Reverse-engineering-of-an-Air-Conditioning-control/> Reverse Engineering Air Conditioner IR Remote Control Protocol<https://www.instructables.com/Reverse-engineering-of-an-Air-Conditioning-control/> Reverse Engineering Air Conditioner IR Remote Control Protocol: Hi, this is my first instructable, hope you like it. To get into electronics I chose a home automation project: a system allowing me to control and program both air conditioner units in my flat. In this instructable I show how I got to understa… www.instructables.com<http://www.instructables.com> So when you have the commands you can use the software you already created to send the data out. Is my assumption correct or is it something else you want to achieve? Thanks. Kind regards, Rob ________________________________ Van: [email protected] <[email protected]> namens hans <[email protected]> Verzonden: zondag 3 september 2023 16:05 Aan: jallib <[email protected]> Onderwerp: Re: [jallib] DAIKIN REMOTE Okay Rob. After 4 days of struggling and a mess of results, I followed my wife's advice. I'm going to start with the old graphics approach. Make an audio recording, greatly enlarge and print it and then write down the series of zeros and ones . For example, I made my circuit earlier and last winter it switched the air conditioners on and off according to the program as heating. Remains with me the respect for the programs you all can make. regards Hans Op donderdag 31 augustus 2023 om 18:48:01 UTC+2 schreef Rob CJ: Hi Hans, What you could do is modify the NEC decoder library and change the bit times and the number of bits. Since you know which bit time is 1 and which is 0 this should be douable. The NEC prototol also starts with a pulse more or less the same as the Daikin, followed by bytes of data and a stop bit. You find the info in the library. The protocol is as follows. -- Specification of NEC IR protocol: -- Logical '0': A 562.5 us pulse burst followed by a 562.5 us space, -- with a total transmit time of 1.125 ms -- Logical '1': A 562.5 us pulse burst followed by a 1.6875ms space, -- with a total transmit time of 2.25 ms -- *) Start with 9 ms leading pulse burst (16 times the pulse burst length used -- for a logical data bit) followed by a a 4.5 ms space. -- *) 8-bit address for the receiving device or 16 bit for the extended protocol -- *) 8-bit logical inverse of the address or high byte for the extended protocol. -- *) 8-bit command. -- *) 8-bit logical inverse of the command. -- *) Final 562.5 us pulse burst to signify the end of message transmission. -- *) The four bytes of data bits are each sent least significant bit first. -- *) After a command is tranmitted and the key on the remote control is still -- pressed only a repeat message is sent consisting of a start pulse of -- 9 ms, followed by a 2.25 ms space. Kind regards, Rob ________________________________ Van: [email protected] <[email protected]> namens hans <[email protected]> Verzonden: donderdag 31 augustus 2023 12:00 Aan: jallib <[email protected]> Onderwerp: Re: [jallib] DAIKIN REMOTE The remote control read on a KY-022 is HIGH at rest. 1. 350 us low 2. 120 us high 3. Then always the 19 bytes burst = 450 us, 0 =350 and 1 =1190 4. Followed by 19 bytes of which the first 4 are always equal 17,218,39,0 I am now reading this out in an audio program and then puzzle the matter out. Is this a way for someone who handles pics ?? / Yes, for a klutz like me it is. Unless some Jal_scholar can help me with a program that just reads that array of values. Op dinsdag 29 augustus 2023 om 19:44:02 UTC+2 schreef hans: This info is not correct for my units but helped me to understand. https://github.com/blafois/Daikin-IR-Reverse Op dinsdag 29 augustus 2023 om 19:31:49 UTC+2 schreef hans: Hi Rob Thank you. NEC is therefore: -- Logical '0': A 562.5 us pulse burst followed by a 562.5 us space, -- with a total transmit time of 1,125 ms -- Logical '1': A 562.5 us pulse burst followed by a 1.6875ms space, -- with a total transmit time of 2.25 ms My system currently works with: -- Logical '0': usec_delay(450) pulse burst followed by a usec_delay(350) space, -- with a total transmit time of 800 -- Logical '1': usec_delay(450pulse burst followed by a usec_delay(1190) space, -- with a total transmit time of 1640 Some publications mention 500 followed by 440 or 1300 uS If I am able to read the different ranges of the remote control, I think I can get further. regards Hans Op dinsdag 29 augustus 2023 om 18:43:48 UTC+2 schreef Rob CJ: Hi Hans, What I see on Internet about the Daikin protocol is that the message length is not always the same and that is not the same as the NEC protocol which has a fixed length. But I may be wrong. I attached the two files to this discussion. Kind regards, Rob ________________________________ Van: [email protected] <[email protected]> namens hans <[email protected]> Verzonden: dinsdag 29 augustus 2023 16:44 Aan: jallib <[email protected]> Onderwerp: Re: [jallib] DAIKIN REMOTE I think NEC is the same system and am therefore looking for the libs for this. I can't handle the Gitthub . Where can I find the libs 16F877a_nec_rc_decode.jalr and the nec_rc_decoder.jal Op maandag 28 augustus 2023 om 20:46:19 UTC+2 schreef hans: Hello Rob, Searching the internet is my basic approach. What I found doesn't work for me. I now know what a bit looks like and I know its structure. I would now like to have a program that can read those bits concatenated into bytes I have no idea how I would go about doing that. regards Hans Op maandag 28 augustus 2023 om 19:04:20 UTC+2 schreef Rob CJ: Hi Hans, Maybe look on the internet if people already figured this out. I saw there is some info there but not sure if that is the info you are looking for. BTW. A tip for your program. You are declaring an array with constant values as var. You can save RAM memory by defining the array as const. You have way more const memory than var memory. Kind regards, Rob ________________________________ Van: [email protected] <[email protected]> namens hans <[email protected]> Verzonden: maandag 28 augustus 2023 13:33 Aan: jallib <[email protected]> Onderwerp: [jallib] DAIKIN REMOTE Daikin air conditioner remote control. I have two daikins that are operated with infrared. After hours of puzzling, I've come to the point where I can turn them both on and off in the heating position. I would also like to know the other functions, but I dread all that work. I read the remote control with a scope and then figure out the values. Is there anyone who has already done this? Otherwise I would like to have a system to read the signals from the remote control. regards Hans -- You received this message because you are subscribed to the Google Groups "jallib" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jallib/2c2df2f5-f93b-403d-a414-a52cf4504571n%40googlegroups.com<https://groups.google.com/d/msgid/jallib/2c2df2f5-f93b-403d-a414-a52cf4504571n%40googlegroups.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "jallib" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. 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16f1825_rc_timer.jal
Description: 16f1825_rc_timer.jal
rc_timer.jal
Description: rc_timer.jal
