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CHG: Small steps, the waiting time between frames was unclear. At least now the tags answers to a readbyte command after the setup phase.

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This commit is contained in:
iceman1001
2016-09-12 09:19:49 +02:00
parent 76471e5d17
commit 111c6934d4
3 changed files with 120 additions and 150 deletions
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12
armsrc/util.c
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@@ -351,8 +351,7 @@ void StartCountUS() {
uint32_t RAMFUNC GetCountUS(){
//return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV / 15) * 10);
// By suggestion from PwPiwi, http://www.proxmark.org/forum/viewtopic.php?pid=17548#p17548
//return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV * 2) / 3);
return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV << 1) / 3);
return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV * 2) / 3);
}
void ResetUSClock(void) {
//enable clock of timer and software trigger
@@ -363,12 +362,9 @@ void ResetUSClock(void) {
// attempt at high resolution microsecond timer
// beware: timer counts in 21.3uS increments (1024/48Mhz)
void SpinDelayCountUs(uint32_t us) {
us += GetCountUS();
us -= 6;
for(;;)
if ( GetCountUS() >= us ) return;
if (us < 8) return;
us += GetCountUS();
while ( GetCountUS() < us ){}
}
// static uint32_t GlobalUsCounter = 0;