HB, OTA etc

esp32/main/protocol.h

@@ -2,6 +2,8 @@
 
 #include <stdint.h>
 #include <stddef.h>
+#include "ringbuf.h"
+
 
 #ifdef __cplusplus
 extern "C" {
@@ -10,7 +12,6 @@ extern "C" {
 int build_telemetry(
     char* buf,
     size_t buf_size,
-    uint32_t msg_id,
     int64_t ts,
     uint32_t device_id,
     const char* metric,
@@ -44,6 +45,12 @@ int build_event(
     const char* message   // optional
 );
 
+uint32_t protocol_next_id();
+
+void protocol_send_event_hb(int64_t ts);
+
+bool protocol_is_connected();
+
 #ifdef __cplusplus
 }
 #endif