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Change the hardware sample rate and ring buffer sizes.

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This commit is contained in:
Jonathan Naylor
2017-10-12 13:22:41 +01:00
parent 4a8d2d5cd1
commit e469294348
6 changed files with 19 additions and 19 deletions
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IODue.cpp
+4 -4
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@@ -140,11 +140,11 @@ void CIO::startInt()
TC_CMR_ACPA_CLEAR | TC_CMR_ACPC_CLEAR |
TC_CMR_BCPB_CLEAR | TC_CMR_BCPC_CLEAR;
#if defined(EXTERNAL_OSC)
t->TC_RC = EXTERNAL_OSC / 24000; // Counter resets on RC, so sets period in terms of the external clock
t->TC_RA = EXTERNAL_OSC / 48000; // Roughly square wave
t->TC_RC = EXTERNAL_OSC / 48000; // Counter resets on RC, so sets period in terms of the external clock
t->TC_RA = EXTERNAL_OSC / 96000; // Roughly square wave
#else
t->TC_RC = 1750; // Counter resets on RC, so sets period in terms of 42MHz internal clock
t->TC_RA = 880; // Roughly square wave
t->TC_RC = 875; // Counter resets on RC, so sets period in terms of 42MHz internal clock
t->TC_RA = 438; // Roughly square wave
#endif
t->TC_CMR = (t->TC_CMR & 0xFFF0FFFF) | TC_CMR_ACPA_CLEAR | TC_CMR_ACPC_SET; // Set clear and set from RA and RC compares
t->TC_CCR = TC_CCR_CLKEN | TC_CCR_SWTRG; // re-enable local clocking and switch to hardware trigger source.