Allystar binary protocol from [here](../../assets/datasheet/T-5-2011-ALLYSTAR_GNSS_Receiver_Binary_Protocol_Specification.pdf)

Common Commands [here](../../assets/datasheet/T-5-2010-Common-Commands-Exclusive-to-Allystar-V1.0.pdf)

| Type                             | Sub-type    | Command                                                           | Remark                                                                                                                              |
| -------------------------------- | ----------- | ----------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------- |
| Command to save config           | Save config | F1 D9 06 09 08 00 00 00 00 00 2F 00 00 00 46 B7                      | This command follows after a config command to save the config.                                                                     |
| Enable/disable a NMEA message    | GGA         | F1 D9 06 01 03 00 F0 00 00 FA 0F Disable                            |                                                                                                                                     |
|                                  |             | F1 D9 06 01 03 00 F0 00 01 FB 10 Enable                            |                                                                                                                                     |
|                                  | GLL         | F1 D9 06 01 03 00 F0 01 00 FB 11 Disable                            |                                                                                                                                     |
|                                  |             | F1 D9 06 01 03 00 F0 01 01 FC 12 Enable                            |                                                                                                                                     |
|                                  | GSA         | F1 D9 06 01 03 00 F0 02 00 FC 13 Disable                            |                                                                                                                                     |
|                                  |             | F1 D9 06 01 03 00 F0 02 01 FD 14 Enable                            |                                                                                                                                     |
|                                  | GSV         | F1 D9 06 01 03 00 F0 04 00 FE 17 Disable                            |                                                                                                                                     |
|                                  |             | F1 D9 06 01 03 00 F0 04 01 FF 18 Enable                            |                                                                                                                                     |
|                                  | RMC         | F1 D9 06 01 03 00 F0 05 00 FF 19 Disable                            |                                                                                                                                     |
|                                  |             | F1 D9 06 01 03 00 F0 05 01 00 1A Enable                            |                                                                                                                                     |
|                                  | VTG         | F1 D9 06 01 03 00 F0 06 00 00 1B Disable                            |                                                                                                                                     |
|                                  |             | F1 D9 06 01 03 00 F0 06 01 01 1C Enable                            |                                                                                                                                     |
|                                  | ZDA         | F1 D9 06 01 03 00 F0 07 00 01 1D Disable                            |                                                                                                                                     |
|                                  |             | F1 D9 06 01 03 00 F0 07 01 02 1E Enable                            |                                                                                                                                     |
|                                  | GST         | F1 D9 06 01 03 00 F0 08 00 02 1F Disable                            |                                                                                                                                     |
|                                  |             | F1 D9 06 01 03 00 F0 08 01 03 20 Enable                            |                                                                                                                                     |
|                                  | GNTXT       | F1 D9 06 01 03 00 F0 20 00 1A 4F Disable                            |                                                                                                                                     |
|                                  |             | F1 D9 06 01 03 00 F0 20 01 1B 50 Enable                            |                                                                                                                                     |
| Config NMEA message output frequency | 1Hz         | F1 D9 06 42 14 00 00 01 38 35 E8 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 B5 6B |                                                                                                                                     |
|                                  | 5Hz         | F1 D9 06 42 14 00 00 05 38 00 C8 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 61 05 |                                                                                                                                     |
|                                  | 10Hz        | F1 D9 06 42 14 00 00 0A 38 00 64 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 24 |                                                                                                                                     |
| Config navigation system         | GPS         | F1 D9 06 0C 04 00 01 00 00 00 17 A0                                | Applies to HD8020 series chips                                                                                                      |
|                                  | Beidou      | F1 D9 06 0C 04 00 04 00 00 00 1A AC                                |                                                                                                                                     |
|                                  | GPS+Beidou  | F1 D9 06 0C 04 00 05 00 00 00 1B B0                                |                                                                                                                                     |
| Config startup mode              | Cold start  | F1 D9 06 40 01 00 01 48 22                                |                                                                                                                                     |
|                                  | Warm start  | F1 D9 06 40 01 00 02 49 23                                |                                                                                                                                     |
|                                  | Hot start   | F1 D9 06 40 01 00 03 4A 24                                |                                                                                                                                     |
|                                  | Reset       | F1 D9 06 40 01 00 00 47 21                                |                                                                                                                                     |
|                                  | Factory reset | F1 D9 06 09 08 00 02 00 00 00 FF FF FF FF 15 01                      |                                                                                                                                     |
| Sleep mode control | Sleep mode with low power consumption | F1 D9 06 41 05 00 FF FF FF 7F 03 CB 56 | In this mode, the power consumption is low to 3.3V@8.4uA. Pull down PRRSTX signal and then release it to wake up.                                                                                                                                   |
| Version query command | Query the hardware and firmware version | F1 D9 0A 04 00 00 0E 34               |                                                                                                                                                                                                                                                     |
| Config baud rate   | Set to be 115200bps  | F1 D9 06 00 08 00 00 00 00 00 00 C2 01 00 D1 E0 |                                                                                                                                                                                                                                                     |
|                    | Set to be 9600 bps   | F1 D9 06 00 08 00 00 00 00 00 80 25 00 00 B3 07 |                                                                                                                                                                                                                                                     |