diff --git a/libraries/AP_HAL_FLYMAPLE/AnalogIn.cpp b/libraries/AP_HAL_FLYMAPLE/AnalogIn.cpp
index 025076910c..5c8f819dbc 100644
--- a/libraries/AP_HAL_FLYMAPLE/AnalogIn.cpp
+++ b/libraries/AP_HAL_FLYMAPLE/AnalogIn.cpp
@@ -44,7 +44,7 @@ FLYMAPLEAnalogIn::FLYMAPLEAnalogIn() :
 
 void FLYMAPLEAnalogIn::init(void* machtnichts) {
     /* Register FLYMAPLEAnalogIn::_timer_event with the scheduler. */
-    hal.scheduler->register_timer_process(_timer_event);
+    hal.scheduler->register_timer_process(reinterpret_cast<AP_HAL::TimedProc>(&FLYMAPLEAnalogIn::_timer_event), this);
     /* Register each private channel with FLYMAPLEAnalogIn. */
     _register_channel(&_vcc);
 }
diff --git a/libraries/AP_HAL_FLYMAPLE/Scheduler.cpp b/libraries/AP_HAL_FLYMAPLE/Scheduler.cpp
index d4e4f40c61..40f6b984da 100644
--- a/libraries/AP_HAL_FLYMAPLE/Scheduler.cpp
+++ b/libraries/AP_HAL_FLYMAPLE/Scheduler.cpp
@@ -41,6 +41,7 @@ volatile bool     FLYMAPLEScheduler::_timer_suspended = false;
 volatile bool     FLYMAPLEScheduler::_timer_event_missed = false;
 volatile bool     FLYMAPLEScheduler::_in_timer_proc = false;
 AP_HAL::TimedProc FLYMAPLEScheduler::_timer_proc[FLYMAPLE_SCHEDULER_MAX_TIMER_PROCS] = {NULL};
+void *            FLYMAPLEScheduler::_timer_arg[FLYMAPLE_SCHEDULER_MAX_TIMER_PROCS] = {NULL};
 uint8_t           FLYMAPLEScheduler::_num_timer_procs = 0;
 
 FLYMAPLEScheduler::FLYMAPLEScheduler() :
@@ -108,7 +109,7 @@ void FLYMAPLEScheduler::register_delay_callback(AP_HAL::Proc proc, uint16_t min_
     _min_delay_cb_ms = min_time_ms;
 }
 
-void FLYMAPLEScheduler::register_timer_process(AP_HAL::TimedProc proc)
+void FLYMAPLEScheduler::register_timer_process(AP_HAL::TimedProc proc, void *arg)
 {
     for (int i = 0; i < _num_timer_procs; i++) {
         if (_timer_proc[i] == proc) {
@@ -121,6 +122,7 @@ void FLYMAPLEScheduler::register_timer_process(AP_HAL::TimedProc proc)
          * because that memory won't be used until _num_timer_procs is
          * incremented. */
         _timer_proc[_num_timer_procs] = proc;
+        _timer_arg[_num_timer_procs] = arg;
         /* _num_timer_procs is used from interrupt, and multiple bytes long. */
         noInterrupts();
         _num_timer_procs++;
@@ -128,7 +130,7 @@ void FLYMAPLEScheduler::register_timer_process(AP_HAL::TimedProc proc)
     }
 }
 
-void FLYMAPLEScheduler::register_io_process(AP_HAL::TimedProc k)
+void FLYMAPLEScheduler::register_io_process(AP_HAL::TimedProc k, void *arg)
 {
     // IO processes not supported on FLYMAPLE
 }
@@ -166,7 +168,7 @@ void FLYMAPLEScheduler::_failsafe_timer_event()
 {
     // run the failsafe, if one is setup
     if (_failsafe != NULL)
-        _failsafe(libmaple_micros());
+        _failsafe(NULL);
 }
 
 void FLYMAPLEScheduler::begin_atomic()
@@ -181,14 +183,13 @@ void FLYMAPLEScheduler::end_atomic()
 
 void FLYMAPLEScheduler::_run_timer_procs(bool called_from_isr) 
 {
-    uint32_t tnow = libmaple_micros();
     _in_timer_proc = true;
 
     if (!_timer_suspended) {
         // now call the timer based drivers
         for (int i = 0; i < _num_timer_procs; i++) {
             if (_timer_proc[i] != NULL) {
-                _timer_proc[i](tnow);
+                _timer_proc[i](_timer_arg[i]);
             }
         }
     } else if (called_from_isr) {
diff --git a/libraries/AP_HAL_FLYMAPLE/Scheduler.h b/libraries/AP_HAL_FLYMAPLE/Scheduler.h
index 3a1f972005..32733dfecd 100644
--- a/libraries/AP_HAL_FLYMAPLE/Scheduler.h
+++ b/libraries/AP_HAL_FLYMAPLE/Scheduler.h
@@ -34,9 +34,9 @@ public:
     void     register_delay_callback(AP_HAL::Proc,
                 uint16_t min_time_ms);
 
-    void     register_timer_process(AP_HAL::TimedProc);
+    void     register_timer_process(AP_HAL::TimedProc, void *);
 
-    void     register_io_process(AP_HAL::TimedProc);
+    void     register_io_process(AP_HAL::TimedProc, void *);
 
     void     suspend_timer_procs();
     void     resume_timer_procs();
@@ -73,6 +73,7 @@ private:
     static volatile bool _timer_suspended;
     static volatile bool _timer_event_missed;
     static AP_HAL::TimedProc _timer_proc[FLYMAPLE_SCHEDULER_MAX_TIMER_PROCS];
+    static void * _timer_arg[FLYMAPLE_SCHEDULER_MAX_TIMER_PROCS];
     static uint8_t _num_timer_procs;
 };