Task: Record MPI data

Procedure

1. Run the mpi_enable_active_mode(<filename>) telecommand.
   • This command enables the necessary EPS channels, and instructs the MPI to start sending science data frames.
   • Recommendation: Store the timestamp in the filename.
2. Run the mpi_disable_active_mode() telecommand to stop recording.
   • This command disables the EPS channels for the MPI.
3. Downlink the file.

Task: Configure MPI, then record data (recommended way)

The MPI's configuration is volatile (that is, it is reset upon MPI reboot).

The MPI can be reconfigured with 1 or more configuration commands prior to data recording.

Procedure

1. Power on the EPS channels for the MPI (mpi_5v and mpi_12v).
2. Use the mpi_send_command_get_response telecommand to set the configuration.
   • E.g., mpi_send_command_get_response(54 43 15 00 02)
3. Begin recording with the mpi_enable_active_mode(<filename>) telecommand.

Task: Configure MPI, then record data (alternative way)

The MPI can be reconfigured with 1 or more configuration commands prior to data recording.

This approach uses the uart_send_hex telecommand instead of the mpi_send_command_get_response telecommand. It requires an extra step to set the transceiver correctly.

Procedure

1. Power on the EPS channels for the MPI (mpi_5v and mpi_12v).
2. Use the mpi_set_transceiver_mode telecommand to set the MPI's UART transceiver to either MOSI or Duplex mode.
3. Use the uart_send_hex(mpi,<command in hex>) telecommand to set the configuration.
   • E.g., uart_send_hex(mpi,54 43 15 00 02)
4. Begin recording with the mpi_enable_active_mode(<filename>) telecommand.