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added 14a send/receive arm timeout

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This commit is contained in:
merlokk 2019-07-17 15:54:22 +03:00
parent 2bd1be9aba
commit 67ad6298cd
1 changed files with 9 additions and 0 deletions

9
armsrc/iso14443a.c
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@ -1578,6 +1578,7 @@ static void TransmitFor14443a(const uint8_t *cmd, uint16_t len, uint32_t *timing
volatile uint8_t b; volatile uint8_t b;
uint16_t c = 0; uint16_t c = 0;
uint32_t sendtimer = GetTickCount();
while (c < len) { while (c < len) {
if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
AT91C_BASE_SSC->SSC_THR = cmd[c++]; AT91C_BASE_SSC->SSC_THR = cmd[c++];
@ -1587,6 +1588,8 @@ static void TransmitFor14443a(const uint8_t *cmd, uint16_t len, uint32_t *timing
b = (uint16_t)(AT91C_BASE_SSC->SSC_RHR); b = (uint16_t)(AT91C_BASE_SSC->SSC_RHR);
(void)b; (void)b;
} }
if (GetTickCount() - sendtimer > 100)
break;
} }
NextTransferTime = MAX(NextTransferTime, LastTimeProxToAirStart + REQUEST_GUARD_TIME); NextTransferTime = MAX(NextTransferTime, LastTimeProxToAirStart + REQUEST_GUARD_TIME);
@ -1937,6 +1940,7 @@ static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint8_t *receive
(void)b; (void)b;
uint32_t timeout = iso14a_get_timeout(); uint32_t timeout = iso14a_get_timeout();
uint32_t receive_timer = GetTickCount();
for (;;) { for (;;) {
WDT_HIT(); WDT_HIT();
@ -1949,7 +1953,12 @@ static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint8_t *receive
return false; return false;
} }
} }
// timeout already in ms + 100ms guard time
if (GetTickCount() - receive_timer > timeout + 100)
break;
} }
return false;
} }
void ReaderTransmitBitsPar(uint8_t *frame, uint16_t bits, uint8_t *par, uint32_t *timing) { void ReaderTransmitBitsPar(uint8_t *frame, uint16_t bits, uint8_t *par, uint32_t *timing) {