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tms320 commented Dec 17, 2019

I use the same UART channel to read data from sensor (via RX pin of controller) and send debug messages (via TX pin). So there is no connection between controller's TX pin and sensor's RX pin.
In my case PMS5003 sensor works fine without sending any command to it.
Your library sends "passive mode" command in 'init' and 'trigRead' methods:
uart->write(cfg, msgLen); // set passive mode

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