Difference between revisions of "FTDI-LA"
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Uwe Hermann (talk | contribs) (Temporary FTDI chip photo.) |
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There's a best-effort driver to acquire raw samples from any FTDI chip supporting | There's a best-effort driver to acquire raw samples from any FTDI chip supporting bitbang modes. '''''It doesn't guarantee overrun-free operation so it may lose samples''''', yet moving the device to a separate USB host or lowering the sample rate helps. | ||
== Hardware == | == Hardware == | ||
FT232RL and FT2232H are known to work, and adding an unsupported chip should be easy. Boards with the former are available on ebay for $3, but it doesn't support USB 2.0 hence sample rates will be lower. | FT232RL and FT2232H are known to work, and adding an unsupported chip should be easy. Boards with the former are available on ebay for $3, but it doesn't support USB 2.0 hence sample rates will be lower. FT*H chips may provide ~20MHz sample rate over a reliable high speed USB link and (bursts of?) 60MHz using synchronous FIFO mode (not implemented in the sigrok driver). | ||
[[Category:Device]] | [[Category:Device]] | ||
[[Category:Logic analyzer]] | [[Category:Logic analyzer]] | ||
[[Category:Supported]] | [[Category:Supported]] | ||
Revision as of 01:52, 10 June 2017
 | |
| Status | supported |
|---|---|
| Source code | ftdi-la |
| Channels | 8 |
| Samplerate | 10MHz |
| Samplerate (state) | — |
| Triggers | none (SW-only) |
| Min/max voltage | 0V — 5V |
| Memory | none |
| Compression | none |
There's a best-effort driver to acquire raw samples from any FTDI chip supporting bitbang modes. It doesn't guarantee overrun-free operation so it may lose samples, yet moving the device to a separate USB host or lowering the sample rate helps.
Hardware
FT232RL and FT2232H are known to work, and adding an unsupported chip should be easy. Boards with the former are available on ebay for $3, but it doesn't support USB 2.0 hence sample rates will be lower. FT*H chips may provide ~20MHz sample rate over a reliable high speed USB link and (bursts of?) 60MHz using synchronous FIFO mode (not implemented in the sigrok driver).