Some questions about the infrared sending

z43740979
Posts: 17
Joined: Wed May 31, 2017 2:46 am

Some questions about the infrared sending

Postby z43740979 » Wed Mar 14, 2018 1:52 am

I use the example rmt _nec_tx_rx.
The waveform detected from the GPIO on the transmit side is the waveform before modulation instead of the the 38KHz pulse.
So the receive side can not Therefore, the receiver cannot parse the received signal.
Is the signal sent by the send function rmt_write_items in the SDK a modulated 38Khz pulse? Or we need to increase the modulation circuit.

ESP_Sprite
Posts: 9708
Joined: Thu Nov 26, 2015 4:08 am

Re: Some questions about the infrared sending

Postby ESP_Sprite » Wed Mar 14, 2018 3:04 am

You can set a modulation on a rmt channel using ``rmt_set_tx_carrier``.


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