add tud_task_ext(), tuh_task_ext() as exteneded version that take timeout and in_isr

also allow exit tud_task,tuh_task after processing all events for
running other background task for user

examples/device/cdc_msc_freertos/src/main.c

@@ -198,6 +198,9 @@ void cdc_task(void* params)
         tud_cdc_write(buf, count);
       }
     }
+
+    // For ESP32-Sx this delay is essential to allow idle how to run and reset watchdog
+    vTaskDelay(1);
   }
 }
 

src/common/tusb_verify.h

@@ -99,8 +99,8 @@
  *------------------------------------------------------------------*/
 
 // Helper to implement optional parameter for TU_VERIFY Macro family
-#define GET_3RD_ARG(arg1, arg2, arg3, ...)        arg3
+#define _GET_3RD_ARG(arg1, arg2, arg3, ...)        arg3
-#define GET_4TH_ARG(arg1, arg2, arg3, arg4, ...)  arg4
+#define _GET_4TH_ARG(arg1, arg2, arg3, arg4, ...)  arg4
 
 /*------------- Generator for TU_VERIFY and TU_VERIFY_HDLR -------------*/
 #define TU_VERIFY_DEFINE(_cond, _handler, _ret)  do            \
@@ -116,7 +116,7 @@
 #define TU_VERIFY_1ARGS(_cond)                         TU_VERIFY_DEFINE(_cond, , false)
 #define TU_VERIFY_2ARGS(_cond, _ret)                   TU_VERIFY_DEFINE(_cond, , _ret)
 
-#define TU_VERIFY(...)                   GET_3RD_ARG(__VA_ARGS__, TU_VERIFY_2ARGS, TU_VERIFY_1ARGS, UNUSED)(__VA_ARGS__)
+#define TU_VERIFY(...)                   _GET_3RD_ARG(__VA_ARGS__, TU_VERIFY_2ARGS, TU_VERIFY_1ARGS, UNUSED)(__VA_ARGS__)
 
 
 /*------------------------------------------------------------------*/
@@ -127,7 +127,7 @@
 #define TU_VERIFY_HDLR_2ARGS(_cond, _handler)           TU_VERIFY_DEFINE(_cond, _handler, false)
 #define TU_VERIFY_HDLR_3ARGS(_cond, _handler, _ret)     TU_VERIFY_DEFINE(_cond, _handler, _ret)
 
-#define TU_VERIFY_HDLR(...)              GET_4TH_ARG(__VA_ARGS__, TU_VERIFY_HDLR_3ARGS, TU_VERIFY_HDLR_2ARGS,UNUSED)(__VA_ARGS__)
+#define TU_VERIFY_HDLR(...)              _GET_4TH_ARG(__VA_ARGS__, TU_VERIFY_HDLR_3ARGS, TU_VERIFY_HDLR_2ARGS,UNUSED)(__VA_ARGS__)
 
 /*------------------------------------------------------------------*/
 /* ASSERT
@@ -139,7 +139,7 @@
 #define ASSERT_2ARGS(_cond, _ret)      TU_VERIFY_DEFINE(_cond, _MESS_FAILED(); TU_BREAKPOINT(), _ret)
 
 #ifndef TU_ASSERT
-#define TU_ASSERT(...)             GET_3RD_ARG(__VA_ARGS__, ASSERT_2ARGS, ASSERT_1ARGS,UNUSED)(__VA_ARGS__)
+#define TU_ASSERT(...)             _GET_3RD_ARG(__VA_ARGS__, ASSERT_2ARGS, ASSERT_1ARGS,UNUSED)(__VA_ARGS__)
 #endif
 
 /*------------------------------------------------------------------*/

src/device/usbd.c

@@ -466,8 +466,10 @@ bool tud_task_event_ready(void)
     }
     @endcode
  */
-void tud_task (void)
+void tud_task_ext(uint32_t timeout_ms, bool in_isr)
 {
+  (void) in_isr; // not implemented yet
+
   // Skip if stack is not initialized
   if ( !tusb_inited() ) return;
 
@@ -475,7 +477,7 @@ void tud_task (void)
   while (1)
   {
     dcd_event_t event;
-    if ( !osal_queue_receive(_usbd_q, &event, 1) ) return;
+    if ( !osal_queue_receive(_usbd_q, &event, timeout_ms) ) return;
 
 #if CFG_TUSB_DEBUG >= 2
     if (event.event_id == DCD_EVENT_SETUP_RECEIVED) TU_LOG2("\r\n"); // extra line for setup
@@ -592,6 +594,11 @@ void tud_task (void)
         TU_BREAKPOINT();
       break;
     }
+
+#if CFG_TUSB_OS != OPT_OS_NONE && CFG_TUSB_OS != OPT_OS_PICO
+    // return if there is no more events, for application to run other background
+    if (osal_queue_empty(_usbd_q)) return;
+#endif
   }
 }
 

src/device/usbd.h

@@ -43,8 +43,17 @@ bool tud_init (uint8_t rhport);
 // Check if device stack is already initialized
 bool tud_inited(void);
 
+// Task function should be called in main/rtos loop, extended version of tud_task()
+// - timeout_ms: millisecond to wait, zero = no wait, 0xFFFFFFFF = wait forever
+// - in_isr: if function is called in ISR
+void tud_task_ext(uint32_t timeout_ms, bool in_isr);
+
 // Task function should be called in main/rtos loop
-void tud_task (void);
+TU_ATTR_ALWAYS_INLINE static inline
+void tud_task (void)
+{
+  tud_task_ext(OSAL_TIMEOUT_WAIT_FOREVER, false);
+}
 
 // Check if there is pending events need proccessing by tud_task()
 bool tud_task_event_ready(void);

src/host/usbh.c

@@ -392,8 +392,10 @@ bool tuh_init(uint8_t rhport)
     }
     @endcode
  */
-void tuh_task(void)
+void tuh_task_ext(uint32_t timeout_ms, bool in_isr)
 {
+  (void) in_isr; // not implemented yet
+
   // Skip if stack is not initialized
   if ( !tusb_inited() ) return;
 
@@ -401,7 +403,7 @@ void tuh_task(void)
   while (1)
   {
     hcd_event_t event;
-    if ( !osal_queue_receive(_usbh_q, &event, 1) ) return;
+    if ( !osal_queue_receive(_usbh_q, &event, timeout_ms) ) return;
 
     switch (event.event_id)
     {
@@ -497,6 +499,11 @@ void tuh_task(void)
 
       default: break;
     }
+
+#if CFG_TUSB_OS != OPT_OS_NONE && CFG_TUSB_OS != OPT_OS_PICO
+    // return if there is no more events, for application to run other background
+    if (osal_queue_empty(_usbh_q)) return;
+#endif
   }
 }
 

src/host/usbh.h

@@ -91,8 +91,17 @@ bool tuh_init(uint8_t rhport);
 // Check if host stack is already initialized
 bool tuh_inited(void);
 
+// Task function should be called in main/rtos loop, extended version of tuh_task()
+// - timeout_ms: millisecond to wait, zero = no wait, 0xFFFFFFFF = wait forever
+// - in_isr: if function is called in ISR
+void tuh_task_ext(uint32_t timeout_ms, bool in_isr);
+
 // Task function should be called in main/rtos loop
-void tuh_task(void);
+TU_ATTR_ALWAYS_INLINE static inline
+void tuh_task(void)
+{
+  tuh_task_ext(OSAL_TIMEOUT_WAIT_FOREVER, false);
+}
 
 // Interrupt handler, name alias to HCD
 extern void hcd_int_handler(uint8_t rhport);
@@ -106,8 +115,8 @@ tusb_speed_t tuh_speed_get(uint8_t daddr);
 bool tuh_mounted(uint8_t daddr);
 
 // Check if device is suspended
-TU_ATTR_ALWAYS_INLINE
+TU_ATTR_ALWAYS_INLINE static inline
-static inline bool tuh_suspended(uint8_t daddr)
+bool tuh_suspended(uint8_t daddr)
 {
   // TODO implement suspend & resume on host
   (void) daddr;
@@ -115,8 +124,8 @@ static inline bool tuh_suspended(uint8_t daddr)
 }
 
 // Check if device is ready to communicate with
-TU_ATTR_ALWAYS_INLINE
+TU_ATTR_ALWAYS_INLINE static inline
-static inline bool tuh_ready(uint8_t daddr)
+bool tuh_ready(uint8_t daddr)
 {
   return tuh_mounted(daddr) && !tuh_suspended(daddr);
 }