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chg: 'hf 14b' removed a delay loop when transmit as reader

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iceman1001
2018-01-25 18:44:25 +01:00
parent f0e328a64b
commit a6c50d7de2
1 changed files with 4 additions and 2 deletions
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6
armsrc/iso14443b.c
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@@ -38,7 +38,7 @@
// 4sample
#define SEND4STUFFBIT(x) ToSendStuffBit(x);ToSendStuffBit(x);ToSendStuffBit(x);ToSendStuffBit(x);
//#define SEND4STUFFBIT(x) ToSendStuffBit(x);
// iceman, this threshold value, what makes 8 a good amplituted for this IQ values?
// iceman, this threshold value, what makes 8 a good amplitude for this IQ values?
#ifndef SUBCARRIER_DETECT_THRESHOLD
# define SUBCARRIER_DETECT_THRESHOLD 8
#endif
@@ -1028,6 +1028,7 @@ static void TransmitFor14443b_AsReader(void) {
// 0xFF = 8 bits of 1. 1 bit == 1Etu,..
// loop 10 * 8 = 80 ETU of delay, with a non modulated signal. why?
// 80*9 = 720us.
/*
for(c = 0; c < 50;) {
if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
AT91C_BASE_SSC->SSC_THR = 0xFF;
@@ -1037,7 +1038,8 @@ static void TransmitFor14443b_AsReader(void) {
b = AT91C_BASE_SSC->SSC_RHR; (void)b;
}
}
*/
// Send frame loop
for(c = 0; c < ToSendMax;) {
if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {