Initial pushmain

1 files changed, 19 insertions, 0 deletions

diff --git a/firmware/s1224/include/sense.h b/firmware/s1224/include/sense.h
new file mode 100644
index 0000000..50933f3
--- /dev/null
+++ b/firmware/s1224/include/sense.h
@@ -0,0 +1,19 @@
+/**
+ * Dual sense: CDT→Signal/RX, RXD→Packet (HDLC 0x7E / edge activity).
+ * Status only — not a Host↔Chip data bridge.
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+#ifndef S1224_SENSE_H
+#define S1224_SENSE_H
+
+#include <stdbool.h>
+
+void sense_init(void);
+/** Poll GPIO / heuristics; call from main loop (~10 ms). */
+void sense_poll(void);
+
+bool sense_signal_active(void);  /* CDT carrier/tone */
+bool sense_packet_active(void);  /* RXD activity or flag seen (held) */
+bool sense_packet_flag(void);    /* last window saw 0x7E */
+
+#endif