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speed optimization

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This commit is contained in:
merlokk 2019-07-17 16:22:14 +03:00
commit 81fa3f20df
1 changed files with 8 additions and 2 deletions
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10
armsrc/iso14443a.c
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@ -1579,17 +1579,23 @@ static void TransmitFor14443a(const uint8_t *cmd, uint16_t len, uint32_t *timing
volatile uint8_t b;
uint16_t c = 0;
uint32_t sendtimer = GetTickCount();
uint32_t cntr = 0;
while (c < len) {
if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
AT91C_BASE_SSC->SSC_THR = cmd[c++];
} else {
if (cntr++ > 1000) {
cntr = 0;
if (GetTickCount() - sendtimer > 100)
break;
}
}
//iceman test
if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
b = (uint16_t)(AT91C_BASE_SSC->SSC_RHR);
(void)b;
}
if (GetTickCount() - sendtimer > 100)
break;
}
NextTransferTime = MAX(NextTransferTime, LastTimeProxToAirStart + REQUEST_GUARD_TIME);