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Diffstat (limited to 'doc/flight-data-recording.inc')
| -rw-r--r-- | doc/flight-data-recording.inc | 48 |
1 files changed, 40 insertions, 8 deletions
diff --git a/doc/flight-data-recording.inc b/doc/flight-data-recording.inc index ed56b82e..d0ffa7f1 100644 --- a/doc/flight-data-recording.inc +++ b/doc/flight-data-recording.inc @@ -2,9 +2,15 @@ == Flight Data Recording Each flight computer logs data at 100 samples per second - during ascent and 10 samples per second during descent, except - for TeleMini v1.0, which records ascent at 10 samples per - second and descent at 1 sample per second. Data are logged to + during ascent and 10 samples per second during + ifdef::telemini[] + descent, except for TeleMini v1.0, which records ascent at 10 samples + per second and descent at 1 sample per second. + endif::telemini[] + ifndef::telemini[] + descent. + endif::telemini[] + Data are logged to an on-board flash memory part, which can be partitioned into several equal-sized blocks, one for each flight. @@ -12,14 +18,24 @@ [options="header",cols="1,1,1,1"] |==== |Device |Bytes per Sample |Total Storage |Minutes at Full Rate + ifdef::telemetrum[] |TeleMetrum v1.0 |8 |1MB |20 |TeleMetrum v1.1 v1.2 |8 |2MB |40 |TeleMetrum v2.0 |16 |8MB |80 + endif::telemetrum[] + ifdef::telemini[] |TeleMini v1.0 |2 |5kB |4 |TeleMini v2.0 |16 |1MB |10 + endif::telemini[] + ifdef::easymini[] |EasyMini |16 |1MB |10 + endif::easymini[] + ifdef::telemega[] |TeleMega |32 |8MB |40 + endif::telemega[] + ifdef::easymega[] |EasyMega |32 |8MB |40 + endif::easymega[] |==== The on-board flash is partitioned into separate flight logs, @@ -28,26 +44,42 @@ stored. Decrease the size and you can store more flights. Configuration data is also stored in the flash memory on - TeleMetrum v1.x, TeleMini and EasyMini. This consumes 64kB + ifdef::telemetrum[TeleMetrum v1.x,] + ifdef::telemini[TeleMini and] + ifdef::easymini[EasyMini.] + This consumes 64kB of flash space. This configuration space is not available - for storing flight log data. TeleMetrum v2.0, TeleMega and EasyMega + for storing flight log data. + + ifdef::telemetrum,telemega,easymega[] + TeleMetrum v2.0, TeleMega and EasyMega store configuration data in a bit of eeprom available within the processor chip, leaving that space available in flash for more flight data. + endif::telemetrum,telemega,easymega[] To compute the amount of space needed for a single flight, you can multiply the expected ascent time (in seconds) by 100 times bytes-per-sample, multiply the expected descent time (in seconds) by 10 times the bytes per sample and add the two together. That will slightly under-estimate the storage (in - bytes) needed for the flight. For instance, a TeleMetrum v2.0 flight spending + bytes) needed for the flight. + ifdef::telemetrum[] + For instance, a TeleMetrum v2.0 flight spending 20 seconds in ascent and 150 seconds in descent will take about (20 * 1600) + (150 * 160) = 56000 bytes of storage. You could store dozens of these flights in the on-board flash. + endif::telemetrum[] The default size allows for several flights on each flight - computer, except for TeleMini v1.0, which only holds data for a - single flight. You can adjust the size. + ifdef::telemini[] + computer, except for TeleMini v1.0, which + only holds data for a single flight. + endif::telemini[] + ifndef::telemini[] + computer. + endif::telemini[] + You can adjust the size. Altus Metrum flight computers will not overwrite existing flight data, so be sure to download flight data and erase it |