The TWS cradle based on the MSPM0L successfully communicated with third-party earbuds, the waveform can be seen in Figure 6-2. The blue line is the output of the hall sensor, indicating the closing of the lid; the green line shows the communication/power waveform between the right earbud and the TWS cradle, while the purple line shows that of the left earbud. The cradle can also flash the LED multiple times depending on the response it received from the earbuds. Apart from that, the cradle also charges the earbuds and is able to detect the opening/closing of the lid.

Figure 6-2 Final Waveform Between the Cradle and Earbuds