new dashboard OLED page for Black Box

src/main/blackbox/blackbox_io.c

@@ -745,4 +745,13 @@ blackboxBufferReserveStatus_e blackboxDeviceReserveBufferSpace(int32_t bytes)
         return BLACKBOX_RESERVE_PERMANENT_FAILURE;
     }
 }
+int8_t blackboxGetLogFileNo(void)
+{   
+    // return current file number or -1 
+    if (blackboxSDCard.state == BLACKBOX_SDCARD_READY_TO_LOG){
+        return blackboxSDCard.largestLogFileNumber;
+    }else {
+        return -1;
+    }
+}
 #endif // BLACKBOX

src/main/blackbox/blackbox_io.h

@@ -63,3 +63,4 @@ int32_t blackboxGetLogNumber(void);
 
 void blackboxReplenishHeaderBudget(void);
 blackboxBufferReserveStatus_e blackboxDeviceReserveBufferSpace(int32_t bytes);
+int8_t blackboxGetLogFileNo(void);

src/main/io/dashboard.c

@@ -63,6 +63,9 @@
 #include "io/dashboard.h"
 #include "io/displayport_oled.h"
 
+#include "blackbox/blackbox_io.h"
+#include "blackbox/blackbox.h"
+
 #include "rx/rx.h"
 
 #include "scheduler/scheduler.h"
@@ -580,6 +583,33 @@ static void showDebugPage(void)
 }
 #endif
 
+static void showBBPage(void)
+{
+    uint8_t rowIndex = PAGE_TITLE_LINE_COUNT;
+    int8_t fileNo;
+    if (isBlackboxDeviceWorking()){
+        switch (blackboxConfig()->device) {
+            case BLACKBOX_DEVICE_SDCARD:
+                fileNo = blackboxGetLogFileNo();
+                if( fileNo > 0){
+                    tfp_sprintf(lineBuffer, "File no: %d", fileNo);
+                }else{
+                    tfp_sprintf(lineBuffer, "Log not started!");
+                }
+                break;
+            default:
+                tfp_sprintf(lineBuffer, "Not supp. dev.");
+                break;
+        }
+    }else{
+        tfp_sprintf(lineBuffer, "BB not working");
+    }
+
+    padLineBuffer();
+    i2c_OLED_set_line(bus, rowIndex++);
+    i2c_OLED_send_string(bus, lineBuffer);
+}
+
 static const pageEntry_t pages[PAGE_COUNT] = {
     { PAGE_WELCOME, FC_FIRMWARE_NAME,  showWelcomePage,    PAGE_FLAGS_SKIP_CYCLING },
     { PAGE_ARMED,   "ARMED",           showArmedPage,      PAGE_FLAGS_SKIP_CYCLING },
@@ -594,6 +624,7 @@ static const pageEntry_t pages[PAGE_COUNT] = {
 #if defined(USE_TASK_STATISTICS)
     { PAGE_TASKS,   "TASKS",           showTasksPage,      PAGE_FLAGS_NONE },
 #endif
+    { PAGE_BB,      "BLACK BOX",       showBBPage,         PAGE_FLAGS_NONE },
 #ifdef ENABLE_DEBUG_DASHBOARD_PAGE
     { PAGE_DEBUG,   "DEBUG",           showDebugPage,      PAGE_FLAGS_NONE },
 #endif

src/main/io/dashboard.h

@@ -53,7 +53,7 @@ typedef enum {
 #ifdef ENABLE_DEBUG_DASHBOARD_PAGE
     PAGE_DEBUG,
 #endif
-
+    PAGE_BB,
     PAGE_COUNT
 } pageId_e;