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Make --sync-with-index and --revolutions work properly on the GreaseWeazle.

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This commit is contained in:
David Given
2021-01-08 21:36:50 +01:00
parent 082be14232
commit 6e1f264e6a
4 changed files with 32 additions and 5 deletions
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22
lib/usb/greaseweazleusb.cc
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@@ -242,7 +242,8 @@ public:
Error() << "unable to determine disk rotational period (is a disk in the drive?)";
do_command({ CMD_GET_FLUX_STATUS, 2 });
return (nanoseconds_t)(secondindex - firstindex) * _clock;
_revolutions = (nanoseconds_t)(secondindex - firstindex) * _clock;
return _revolutions;
}
void testBulkWrite()
@@ -297,8 +298,18 @@ public:
Bytes read(int side, bool synced, nanoseconds_t readTime)
{
int revolutions = (readTime+_revolutions-1) / _revolutions;
do_command({ CMD_HEAD, 3, (uint8_t)side });
do_command({ CMD_READ_FLUX, 2 });
{
Bytes cmd(4);
cmd.writer()
.write_8(CMD_READ_FLUX)
.write_8(cmd.size())
.write_le32(revolutions + (synced ? 1 : 0));
do_command(cmd);
}
Bytes buffer;
ByteWriter bw(buffer);
@@ -311,7 +322,11 @@ public:
}
do_command({ CMD_GET_FLUX_STATUS, 2 });
return greaseWeazleToFluxEngine(buffer, _clock);
Bytes fldata = greaseWeazleToFluxEngine(buffer, _clock);
if (synced)
fldata = stripPartialRotation(fldata);
return fldata;
}
void write(int side, const Bytes& fldata)
@@ -351,6 +366,7 @@ public:
private:
nanoseconds_t _clock;
nanoseconds_t _revolutions;
};
USB* createGreaseWeazleUsb(libusb_device_handle* device)