Add support for "Sweep Frequency" RF

[lprhodes]

Hi @mjg59

I have the full details on what happens when you press "Sweep Frequency" now.

These payloads are all sent with 0x6a commands.

Start Sweep Frequency: 0x19

Check for found frequency part 1 (repeat once per second): 0x1a
Wait for 0x01 as position 0x04 response: 0x1a000000010000000000000000000000

Check for found frequency part 2 (repeat once every second): 0x1b
Wait for 0x01 as position 0x04 response: 0x1b000000010000000000000000000000

Use the standard check data (release once per second): 0x04
Wait for hex code response as you would on the normal check data

[mjg59]

Just to make sure I understand, the flow is:

Send 0x6a, 0x19
Send 0x6a, 0x1a until you get an 0x01
Send 0x6a, 0x1b until you get an 0x01
Send 0x6a, 0x04 to get the response

Is there any need to call 0x6a, 0x03 (the enter_learning command that's used for IR)? Does the orange LED turn on at any point in this process?

[ereg]

Hello @mjg59 ,

I can confirm that the orange LED turns on, directly after entering learning "Sweep Frequency" (0x19, I guess). And it stays on during both steps.

First step is Learning frequency (0x1a ?), a long press on button until it´s done.
Second step is Learning Code (0x1b ?). and is only a short press, like with IR code.

Maybe not much help, but love to get this working.

[lprhodes]

I ended up adding it to the JS version - it should help you work things out https://github.com/lprhodes/broadlinkjs-rm/blob/master/index.js

[mjg59]

@lprhodes Afraid not - it's still not clear what the correct sequence of events is. Is my understanding in #87 (comment) correct?

[ereg]

is it possible to try this?

[mjg59]

Could someone test https://github.com/mjg59/python-broadlink/tree/rf_experiment ? I don't have any RF equipment to test it with.

[iondulgheru]

@mjg59, I made a test and it works on python3 (3.6.3).
But on python 2.7 I get a timeout when I run device.check_data(). After that all the calls receive a timeout and I need to reconnect to the device.
Otherwise, on python3 works as expected. I also used the returned code (device.send_data(ir_packet)) and I could control the end device.

I used this cheap RF remote to test it:
https://www.amazon.com/Lerway-Controller-Wireless-Control-R106/dp/B00AHU2U7O

[masarliev]

@mjg59 Tested with some RF remotes and I get None on devices[0].check_data()
Here is example code that I use. May be I missed something

import broadlink
broadlink.setup('ssid', 'password', 3)

devices = broadlink.discover(timeout=5)
devices[0].auth()
devices[0].enter_learning()
devices[0].sweep_frequency()
print("learning")
while 1:
    found = devices[0].check_frequency()
    if found:
        print('Found')
        break

while 1:
    found = devices[0].find_rf_packet()
    if found:
        print(devices[0].check_data())

[iondulgheru]

@masarliev , try increasing your timeout to 120.
I got this timeout error also on the master branch, but after I increased it, the device was found.
If the device was already setup, and you know the IP and mac, you don't need to run discover.
Just create a device object by using:
dev = broadlink.gendevice(DEVICE_TYPE_HERE, ("DEVICE_IP_HERE",80), mac=bytearray.fromhex("DEVICE_MAC_HERE"))
You can get your device type from here:
https://github.com/mjg59/python-broadlink/blob/master/broadlink/__init__.py#L16
It's the devtype hex.

[masarliev]

I don't have problem on device discovery. I don't receive the RF code

[laviua]

Something goes wrong...
i've created a loop with "sweep freq (0x19)", sleep, "check freq (0x1a)" until 0x04 == 1
then find rf packet (0x1b) returns 0x04 == 1, but get learned data (0x22, 0x23) returns error...

btw in some cases i can receive rf codes, even if check_frequency is false.
i didn't use sweep, find_rf_packet packets.....only learn