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Added setting of FTDI latency timer to improve PRHardwareRead() times that were slowing down reading switch events.

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This commit is contained in:
Adam Preble
2009-05-29 21:41:47 -04:00
parent f3a71b7a6f
commit afc63b4460
1 changed files with 3 additions and 0 deletions
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3
src/PRHardware.cpp
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@@ -316,6 +316,9 @@ PRResult PRHardwareOpen()
uint32_t chipid; uint32_t chipid;
ftdi_read_chipid(&ftdic,&chipid); ftdi_read_chipid(&ftdic,&chipid);
DEBUG(PRLog("FTDI chip_id = 0x%x\n", chipid)); DEBUG(PRLog("FTDI chip_id = 0x%x\n", chipid));
// Set some defaults:
ftdi_read_data_set_chunksize(&ftdic, 4096);
ftdi_set_latency_timer(&ftdic, 2); // This helps make reads much faster. 16 appeared to be the default.
ftdiInitialized = true; ftdiInitialized = true;
return kPRSuccess; return kPRSuccess;
} }