github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-21 05:43:48 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

added @piwi 's usb speed test.

Browse source 
.. found out that my usb speed is really slow.  Started to look for reasons. Have a win7 64 env, running on a vmware image.
This commit is contained in:
iceman1001 2015-07-31 10:37:24 +02:00
commit f62b5e1204
8 changed files with 117 additions and 77 deletions
Download patch file Download diff file Expand all files Collapse all files

11
armsrc/util.c
View file

@ -304,11 +304,12 @@ void FormatVersionInformation(char *dst, int len, const char *prefix, void *vers
void StartTickCount()
{
// must be 0x40, but on my cpu - included divider is optimal
// 0x20 - 1 ms / bit
// 0x40 - 2 ms / bit
AT91C_BASE_RTTC->RTTC_RTMR = AT91C_RTTC_RTTRST + 0x001D; // was 0x003B
// This timer is based on the slow clock. The slow clock frequency is between 22kHz and 40kHz.
// We can determine the actual slow clock frequency by looking at the Main Clock Frequency Register.
uint16_t mainf = AT91C_BASE_PMC->PMC_MCFR & 0xffff; // = 16 * main clock frequency (16MHz) / slow clock frequency
// set RealTimeCounter divider to count at 1kHz:
AT91C_BASE_RTTC->RTTC_RTMR = AT91C_RTTC_RTTRST | ((256000 + (mainf/2)) / mainf);
// note: worst case precision is approx 2.5%
}
/*