ADD: 'lf cotag read' - COTAG can be read now.

armsrc/lfsampling.h

@@ -11,7 +11,14 @@
 typedef struct BitstreamOut BitstreamOut;
 
 /**
-* acquisition of T55x7 LF signal. Similart to other LF, but adjusted with @marshmellows thresholds
+* acquisition of Cotag LF signal. Similar to other LF,  since the Cotag has such long datarate RF/384
+* and is Manchester?,  we directly gather the manchester data into bigbuff
+**/
+void doCotagAcquisition(size_t sample_size);
+uint32_t doCotagAcquisitionManchester(void);
+
+/**
+* acquisition of T55x7 LF signal. Similar to other LF, but adjusted with @marshmellows thresholds
 * the data is collected in BigBuf.
 **/
 void doT55x7Acquisition(size_t sample_size);