 
     r1.25;
 
-FIXME: should I also support 'XFF;', which is the equivalent of 'xFF;' but with gain bit set?
+Dump the current state:
+
+    ?;
+
 */
+
+
+// --- buffer
+
 
 #define MIN_EXPECTED_BUFF_LEN 2 // "+;"
 #define MAX_EXPECTED_BUFF_LEN 9 // "v12.3456;"

                       };


// --- Serial setup:


#define RX_pin ATTINY85_PIN_2

char_buffer_t buffer = { .len = BUFF_LEN, .bytes = buffer_bytes };


// --- globals


float LM317_vref = 1.25;
float op_amp_gain = 4.3;


// ---
