+#define GRUNDIG_BIT_TIME 528.0e-6 // 528 usec pulse/pause\r
+#define GRUNDIG_PRE_PAUSE_TIME 2639.0e-6 // 2639 usec pause after pre bit\r
+#define GRUNDIG_ADDRESS_OFFSET 0 // skip 2 bits (2nd start + 1 toggle)\r
+#define GRUNDIG_ADDRESS_LEN 0 // read 5 address bits\r
+#define GRUNDIG_COMMAND_OFFSET 1 // skip 2 bits (1 start bit)\r
+#define GRUNDIG_COMMAND_LEN 9 // read 9 command bits\r
+#define GRUNDIG_COMPLETE_DATA_LEN 10 // complete length: 1 start bit + 9 data bits\r
+#define GRUNDIG_STOP_BIT 0 // has no stop bit\r
+#define GRUNDIG_LSB 1 // MSB...LSB\r
+\r