x1000: bootloader: add screenshot function

Screenshots of the recovery menu will be useful for documentation.

This can be disabled by turning off HAVE_BOOTLOADER_SCREENDUMP in
the target config file if the bootloader should ever run up against
max size limits.

Change-Id: I62ec1e465df2ca7a8a0e78625d88b31f6c4ef078

1 files changed, 11 insertions, 4 deletions

diff --git a/bootloader/x1000/gui.c b/bootloader/x1000/gui.c
index 513a3cb9cb..1208d3c161 100644
--- a/bootloader/x1000/gui.c
+++ b/bootloader/x1000/gui.c
@@ -122,10 +122,17 @@ void splashf(long delay, const char* msg, ...)
 int get_button(int timeout)
 {
     int btn = button_get_w_tmo(timeout);
-    if(btn == SYS_USB_CONNECTED)
-        is_usb_connected = true;
-    else if(btn == SYS_USB_DISCONNECTED)
-        is_usb_connected = false;
+    switch(btn) {
+    case SYS_USB_CONNECTED:
+    case SYS_USB_DISCONNECTED:
+        is_usb_connected = (btn == SYS_USB_CONNECTED);
+        break;
+#ifdef HAVE_SCREENDUMP
+    case BL_SCREENSHOT:
+        screenshot();
+        break;
+#endif
+    }
 
     return btn;
 }