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tweaking felica timings to see if it gets better results

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This commit is contained in:
iceman1001 2024-04-22 10:41:28 +02:00
commit 4304372858
5 changed files with 141 additions and 46 deletions
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17
armsrc/lfsampling.c
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@ -246,12 +246,13 @@ void logSample(uint8_t sample, uint8_t decimation, uint8_t bits_per_sample, bool
**/
void LFSetupFPGAForADC(int divisor, bool reader_field) {
FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
if ((divisor == 1) || (divisor < 0) || (divisor > 255))
if ((divisor == 1) || (divisor < 0) || (divisor > 255)) {
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, LF_DIVISOR_134); //~134kHz
else if (divisor == 0)
} else if (divisor == 0) {
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, LF_DIVISOR_125); //125kHz
else
} else {
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor);
}
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER | (reader_field ? FPGA_LF_ADC_READER_FIELD : 0));
@ -623,12 +624,14 @@ void doT55x7Acquisition(size_t sample_size, bool ledcontrol) {
// skip until first high samples begin to change
if (startFound || sample > T55xx_READ_LOWER_THRESHOLD + T55xx_READ_TOL) {
// if just found start - recover last sample
if (!startFound) {
if (startFound == false) {
dest[i++] = lastSample;
startFound = true;
}
// collect samples
dest[i++] = sample;
if (i < bufsize) {
dest[i++] = sample;
}
}
}
}
@ -698,13 +701,15 @@ void doCotagAcquisition(void) {
firstlow = true;
}
++i;
if (sample > COTAG_ONE_THRESHOLD) {
dest[i] = 255;
++i;
} else if (sample < COTAG_ZERO_THRESHOLD) {
dest[i] = 0;
++i;
} else {
dest[i] = dest[i - 1];
++i;
}
}
}