Kenji Arai / Mbed OS Check_TimerEvent_os5_15_3

[Updated on OS6] TimerEvent is no longer existing!! Checked TimerEvent function on os5 latest version. Result is okay on FRDM-K64F but STM32 series are NOT okay e.g. Nucleo-L152RE, -F446RE, -L432KC and so on. This TimerEvent is using SoftSerial library and works well on old os2 but not OS5 latest version STM32 series Mbed board.

Forum discussion.
https://forums.mbed.com/t/how-to-port-software-serial-to-os5-6/12641
https://forums.mbed.com/t/softserial-problem-l432kc/8288

Diff: main.cpp

Revision:
1:3e3b7ec1f33d
Parent:
0:0a78edc7ac85
--- a/main.cpp	Tue May 12 01:15:04 2020 +0000
+++ b/main.cpp	Tue Mar 30 07:30:39 2021 +0000
@@ -1,23 +1,55 @@
 /*
- * Mbed-OS5 & OS-2
- *  Check EventTimer behavior
+ * Mbed-OS5 & OS-2 --> Added OS6
+ *  Check EventTimer(on OS6, change name Ticker) behavior
  *
- * Copyright (c) 2020 Kenji Arai / JH1PJL
+ * Copyright (c) 2020,'21 Kenji Arai / JH1PJL
  *  http://www7b.biglobe.ne.jp/~kenjia/
  *  https://os.mbed.com/users/kenjiArai/
- *      Revised:    May       12th, 2020
- *      Revised:    May       12th, 2020
+ *      Created:    May       12th, 2020
+ *      Revised:    March     30th, 2021
+ */
+/*
+    test result target = 50uS
+        Nucleo-L432KC
+        2.162
+        0= 223, 1=  51, 2=  49, 3=  50, 4=  51, 5=  49, 6=  50, 7=  51, 8=  49
+        5.15.3
+        0= 109, 1=  50, 2=  50, 3=  48, 4=  51, 5=  52, 6=  47, 7=  52, 8=  48
+        6.8.0
+        0= 613, 1=  51, 2=  50, 3=  51, 4=  50, 5=  51, 6=  50, 7=  51, 8=  50
+
+        Nucleo-F446RE
+        2.162
+        0=  85, 1=  50, 2=  50, 3=  50, 4=  50, 5=  50, 6=  50, 7=  50, 8=  50
+        5.15.3
+        0= 136, 1=  50, 2=  50, 3=  50, 4=  50, 5=  50, 6=  50, 7=  50, 8=  50
+        6.8.0
+        0= 138, 1=  50, 2=  50, 3=  50, 4=  50, 5=  50, 6=  50, 7=  50, 8=  50
+
+        FRDM-K64F
+        2.162
+        0=  61, 1=  51, 2=  49, 3=  51, 4=  49, 5=  51, 6=  49, 7=  51, 8=  49
+        5.15.3
+        0=  61, 1=  53, 2=  49, 3=  48, 4=  49, 5=  53, 6=  49, 7=  49, 8=  50
+        6.8.0
+        0=  66, 1=  51, 2=  48, 3=  50, 4=  51, 5=  51, 6=  51, 7=  47, 8=  50
+
+
  */
 
 #include "mbed.h"
 
+#if (MBED_MAJOR_VERSION == 6)
+class FlexTicker: public Ticker
+#else
 class FlexTicker: public TimerEvent
+#endif
 {
 public:
     void attach(void(*fptr)(void)) { _function = Callback<void()>(fptr);}
     void detach() { remove();}
     void setNext(int delay) { insert(event.timestamp + delay);}
-    void prime()  { event.timestamp = us_ticker_read();}
+    void prime() { event.timestamp = us_ticker_read();}
 protected:
     virtual void handler() { _function.call();}
     unsigned int _delay;
@@ -57,11 +89,16 @@
         tk.prime();
         led = 0;
         tk.setNext(TARGET_TIME);
+#if (MBED_MAJOR_VERSION == 6)
+        ThisThread::sleep_for(500ms);
+#elif (MBED_MAJOR_VERSION == 5)
         thread_sleep_for(500);
-        //wait_ms(500);
+#else
+        wait_ms(500);
+#endif
         for (uint32_t i = 0; i < 9; i++) {
             printf("%d=%4d, ", i, time_data[i+1] - time_data[i]);
         }
-        printf("No=time[us]\r\n");
+        printf("(<- No=time[us] (target %dus))\r\n", TARGET_TIME);
     }
 }