feat: OTA über HTTP mit Trailer-Prüfung

src/sys/nl_app_api.c

@@ -11,6 +11,7 @@
 #include "net/nl_wifi.h"
 #include "sys/nl_app.h"
 #include "sys/nl_app_api.h"
+#include "sys/nl_ota.h"
 
 #include "nl_version.h"
 
@@ -88,7 +89,7 @@ static void get_info(nl_sys_info_t *out)
     out->wifi_error = w.error;
     out->uptime_s = nl_app_now_ms() / 1000u;
     out->free_heap = tls_mem_get_avail_heapsize();
-    out->last_ota_error = NULL;
+    out->last_ota_error = nl_ota_last_error();
 }
 
 static void factory_reset(void) { nl_app_request_factory_reset(); }
@@ -100,11 +101,7 @@ static void ping(void)
     nl_app_unlock();
 }
 
-static int fw_update(const char *url)
-{
-    (void)url;
-    return -1; /* OTA arrives in plan 3 */
-}
+static int fw_update(const char *url) { return nl_ota_start(url); }
 
 const nl_api_ctx_t *nl_app_api_ctx(void)
 {