added tud_suspended() and tud_ready()

1 files changed, 11 insertions, 1 deletions

diff --git a/src/device/usbd.h b/src/device/usbd.h
index d9b9cb8a7..13c282e91 100644
--- a/src/device/usbd.h
+++ b/src/device/usbd.h
@@ -66,6 +66,15 @@ void tud_task (void);
 // Check if device is connected and configured

 bool tud_mounted(void);

 

+// Check if device is suspended

+bool tud_suspended(void);

+

+// Check if device is ready to transfer

+static inline bool tud_ready(void)

+{

+  return tud_mounted() && !tud_suspended();

+}

+

 // Remote wake up host, only if suspended and enabled by host

 bool tud_remote_wakeup(void);

 

@@ -79,7 +88,8 @@ ATTR_WEAK void tud_mount_cb(void);
 // Invoked when device is unmounted

 ATTR_WEAK void tud_umount_cb(void);

 

-// Invoked when usb bus is suspended, max bus current draw is 2.5 mA

+// Invoked when usb bus is suspended

+// Within 7ms, device must draw an average of current less than 2.5 mA from bus

 ATTR_WEAK void tud_suspend_cb(bool remote_wakeup_en);

 

 // Invoked when usb bus is resumed