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Hey there! First of all: Great product, but there's some headroom: In the current version of Flirc on windows (as of April 2020) erasing just one key in the Kodi mode doesn't work, and clicking every button is also not that convenient. But my real question here is, if I can use modifier keys on the remote, because the LG remote for my DVD player (which I use because it has dedicated play/pause buttons and more) has also a small section of buttons for controlling a TV. Those can be adapted to some TVs, because the remote has some profiles stored in it. But after registering the buttons, it doesn't actually react to them, but when I try to reassign them, it says that this button is already in use. So I wanted to use a modifier key (the 'Audio' key on my remote) to be able to adjust volume and channel with the main direction buttons, but I can find no option for this. Also it would be nice, if the remote configuration file stored on the pc would be a text file, only with another ending, so you could modify some configurations yourself/see if Flirc registered them, because the 'power'-button doesn't do anything when pressed, but when trying to register it, it nevertheless says that it is already registered. So maybe a dedicated 'test all the buttons' mode would be helpful here, where the control signals are not passed through to the OS.

tl;dr USB HID codes from here http://www.freebsddiary.org/APC/usb_hid_usages.php should be given to flirc_util record_api as decimal Hi all Just had to deal with flirc_util record_api on account of the GUI not recognizing the Flirc board as connected (http://forum.flirc.tv/index.php?/topic/2208-linux-x64-flirc_util-works-without-root-but-flirc-gui-always-say-disconnected/#comment-12182 ), and I thought I'd save the information I found in a topic with a descriptive title for future reference: This is also a good resource: http://forum.flirc.tv/index.php?/topic/128-modifier-keys-in-command-line-recording/ flirc_util record_api x y where x is the modifier key and y is the HID key. # Modifier keys According to the documentation presented when running "flirc_util record_api" the modifier keys are specified by logically OR'ing these values together as binary (the de facto standard for specifying flags as a single parameter): OR'ing binary numbers is done by going through the two numbers bit by bit and comparing corresponding bits. If one of the two bits is 1 set the corresponding result bit to 1, otherwise set it to 0, e.g. 0101 OR 0010 = 0111. For these specific binary numbers (1,2,4...128 as decimal) OR'ing is the same as ADDing, and since "flirc_util record_api" expects a decimal input we might as add them in decimal: LEFT CTRL + LEFT SHFIT = 1 + 2 = 3 LEFT CTRL + LEFT ALT + LEFT SHIFT = 1 + 2 + 4 = 7 # HID keys The HID key codes can be found here: http://www.freebsddiary.org/APC/usb_hid_usages.php "flirc_util record_api" expects the code as decimal, but the freebsddiary.org page gives them in HEX, so get your hex-to-dec converter out. For example, 'g and G' is specified as 0x0A which is 10 in decimal. So if you want to program the g/G keyboard key with "flirc_util record_api x y" you have to specify y as 10, not 0x0A or similar. Another example is DownArrow which is specified as 0x52 in hex which needs to be specified as 82 in decimal. # Putting it together If you want to program LEFT CTRL + LEFT SHIFT + UP ARROW you need 1+2=3 as modifier key and 0x52=82 as HID key: flirc_util record_api 3 82 Another example is LEFT CTRL + LEFT SHIFT + LEFT ALT + S which would be 1+2+4=7 as modifier key and 0x16=22 as HID key: flirc_util record_api 7 22 # Documentation from flirc_util