TV_CMD_CHANGE_CHANNEL (can you give an example)

[chearmstrong]

Hi,

I'm able to successfully get back the channel list using the queryData method and the TV_INFO_CHANNEL_LIST param.

However, I want to change the channel, based on an item (channel) in the list, but I'm not having any luck.

Are you able to provide an example of how to do this please? Should I be using the processCommand method? If so, what are the params?

Thanks in advance.

Ché

[timmson]

Hi, @chearmstrong Thanks for your question. I'll try this feature in next 1-2 days and come back to you with complete example. I actually use "takeScreenshot" to control what channel i really have on my TV.

[chearmstrong]

That would be great, thanks. I'll continue to experiment too. I'm also wanting to see if it's possible to open a specific app too, but no luck on that either.

[timmson]

I've checked the source. It was an error in README. Further you can see the valid example (ver 0.8.5):

tvApi.authenticate(function (err, sessionKey) {
        if (err) {
            console.error(err);
        } else {
            tvApi.queryData(tvApi.TV_INFO_CHANNEL_LIST, function (err, data) {
                if (err) {
                    console.error(err);
                } else {
                    console.log(data);
                }
            });
        }
    }
);

Changing the current channel:

tvApi.authenticate(function (err, sessionKey) {
        if (err) {
            console.error(err);
        } else {
            tvApi.processCommand(tvApi.TV_CMD_NUMBER_4, [], function (err, data) {
                if (err) {
                    console.error(err);
                } else {
                    console.log(data);
                }
            });
        }
    }
);

@chearmstrong, thx for your request! May i close the issue?

[chearmstrong]

Hi mate, thanks for this.

How would you suggest working with a channel with double digits? For example, channel 28? Am I right in thinking that TV_CMD_NUMBER_4 (for example) is just the same as pressing number for on the key pad.

Would I need to do TV_CMD_NUMBER_2 then TV_CMD_NUMBER_8 for channel 28.

So the TV_CMD_CHANGE_CHANNEL command isn't used?

I did try TV_CMD_NUMBER_2 then TV_CMD_NUMBER_8 but it didn't work as expected - not sure if I'm missing something.

Thanks again.

[timmson]

Ok, i've got it:) Like this? (ver. 0.8.7)

tvApi.authenticate(function (err, sessionKey) {
        if (err) {
            console.error(err);
        } else {
            tvApi.queryData(tvApi.TV_INFO_CHANNEL_LIST, function (err, data) {
                if (err) {
                    console.error(err);
                } else {
                    tvApi.processCommand(tvApi.TV_CMD_CHANGE_CHANNEL, data[5], function (err, data) {
                        if (err) {
                            console.error(err);
                        } else {
                            console.log(data);
                        }
                    });
                }
            });
        }
    }
);

[chearmstrong]

Hi mate, yes I worked out the issue but I can see you did too and fixed it now. Good job. :)