HB, OTA etc

esp32/main/fw_command.cpp

@@ -0,0 +1,18 @@
+//
+// Created by eugene on 22.04.2026.
+//
+
+#include "fw_command.h"
+#include "json_utils.h"
+#include <cstring>
+
+bool parse_fw_command(const char *msg, fw_cmd_t *out) {
+    if (!strstr(msg, "\"t\":\"c\"")) return false;
+    if (!strstr(msg, "\"t\":\"fw\"")) return false;
+
+    if (!json_get_string(msg, "\"u\"", out->url, sizeof(out->url))) return false;
+    if (!json_get_string(msg, "\"s\"", out->sha256, sizeof(out->sha256))) return false;
+
+    out->is_fw = true;
+    return true;
+}