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lf t55xx and some lf demod fixes/adjustments

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finally think I like the lf t55xx detect and read cmds.  pretty reliable
now.
This commit is contained in:
marshmellow42 2015-11-16 18:49:20 -05:00
commit db8296025f
6 changed files with 230 additions and 210 deletions
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11
armsrc/lfsampling.c
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@ -268,7 +268,7 @@ void doT55x7Acquisition(size_t sample_size) {
bool startFound = false;
bool highFound = false;
uint8_t curSample = 0;
uint8_t firstSample = 0;
uint8_t lastSample = 0;
uint16_t skipCnt = 0;
while(!BUTTON_PRESS() && skipCnt<1000) {
WDT_HIT();
@ -282,19 +282,18 @@ void doT55x7Acquisition(size_t sample_size) {
// skip until the first high sample above threshold
if (!startFound && curSample > T55xx_READ_UPPER_THRESHOLD) {
if (curSample > firstSample)
firstSample = curSample;
if (curSample > lastSample)
lastSample = curSample;
highFound = true;
} else if (!highFound) {
skipCnt++;
continue;
}
// skip until first high samples begin to change
if (startFound || curSample < firstSample-T55xx_READ_TOL){
if (startFound || curSample < T55xx_READ_UPPER_THRESHOLD-T55xx_READ_TOL){
// if just found start - recover last sample
if (!startFound) {
dest[i++] = firstSample;
dest[i++] = lastSample;
startFound = true;
}
// collect samples