SubGHz: Rework GPS as plugin, fix VGM (#5)

- Streamlined atomic init and deinit - Load from plugin into RAM dynamically - Don't attempt load if VGM / Expansion is connected - Deduplicated some code, cleaned up some other bits
2026-04-24 03:29:57 -07:00 · 2024-03-30 03:38:59 +00:00
parent dcb5c50351
commit ef2c955995
15 changed files with 309 additions and 369 deletions
--- a/applications/main/subghz/helpers/subghz_gps_plugin.c
+++ b/applications/main/subghz/helpers/subghz_gps_plugin.c
@@ -0,0 +1,71 @@
+#include "subghz_gps.h"
+
+#include <expansion/expansion.h>
+#include <loader/firmware_api/firmware_api.h>
+#include <inttypes.h>
+
+#define TAG "SubGhzGPS"
+
+SubGhzGPS* subghz_gps_plugin_init(uint32_t baudrate) {
+    bool connected = expansion_is_connected(furi_record_open(RECORD_EXPANSION));
+    furi_record_close(RECORD_EXPANSION);
+    if(connected) return NULL;
+
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    FlipperApplication* plugin_app = flipper_application_alloc(storage, firmware_api_interface);
+    do {
+        FlipperApplicationPreloadStatus preload_res = flipper_application_preload(
+            plugin_app, EXT_PATH("apps_data/subghz/plugins/subghz_gps.fal"));
+
+        if(preload_res != FlipperApplicationPreloadStatusSuccess) {
+            FURI_LOG_E(TAG, "Failed to preload GPS plugin. Code: %d\r\n", preload_res);
+            break;
+        }
+
+        if(!flipper_application_is_plugin(plugin_app)) {
+            FURI_LOG_E(TAG, "GPS plugin file is not a library\r\n");
+            break;
+        }
+
+        FlipperApplicationLoadStatus load_status = flipper_application_map_to_memory(plugin_app);
+        if(load_status != FlipperApplicationLoadStatusSuccess) {
+            FURI_LOG_E(TAG, "Failed to load GPS plugin file. Code %d\r\n", load_status);
+            break;
+        }
+
+        const FlipperAppPluginDescriptor* app_descriptor =
+            flipper_application_plugin_get_descriptor(plugin_app);
+
+        if(strcmp(app_descriptor->appid, "subghz_gps") != 0) {
+            FURI_LOG_E(TAG, "GPS plugin type doesn't match\r\n");
+            break;
+        }
+
+        if(app_descriptor->ep_api_version != 1) {
+            FURI_LOG_E(
+                TAG,
+                "GPS plugin version %" PRIu32 " doesn't match\r\n",
+                app_descriptor->ep_api_version);
+            break;
+        }
+
+        void (*subghz_gps_init)(SubGhzGPS* subghz_gps, uint32_t baudrate) =
+            app_descriptor->entry_point;
+
+        SubGhzGPS* subghz_gps = malloc(sizeof(SubGhzGPS));
+        subghz_gps->plugin_app = plugin_app;
+        subghz_gps_init(subghz_gps, baudrate);
+        return subghz_gps;
+
+    } while(false);
+    flipper_application_free(plugin_app);
+    furi_record_close(RECORD_STORAGE);
+    return NULL;
+}
+
+void subghz_gps_plugin_deinit(SubGhzGPS* subghz_gps) {
+    subghz_gps->deinit(subghz_gps);
+    flipper_application_free(subghz_gps->plugin_app);
+    free(subghz_gps);
+    furi_record_close(RECORD_STORAGE);
+}