Can't find EBYTE test board E73-TBM-01 V1.0 schematic, so figured out connections by myself:
| NRF52832 | E73-2G4M04S1B | Connected to |
|---|---|---|
| P0.05 | 21 | CH340G CTS |
| P0.06 | 22 | CH340G RX |
| P0.07 | 23 | CH340G RTS |
| P0.08 | 24 | CH340G TX |
| P0.13 | 29 | SW2 (act. low) |
| P0.14 | 30 | SW1 (act. low) |