make freertos source unmodified to ease the upgrade process later

use CGU_GetPCLKFrequency as configCPU_CLOCK_HZ for lpc43xx using with freeRTOS
move portmarco.h include to FreeRTOSConfig.h to have untouched version of freertos
add a readme.md to vendor/freertos
refractor usbh.c, increase POWER_STABLE_DELAY = 500, RESET_DELAY = 200
fix bug with hub, only handle 1 port at a time when reading hub status change endpoint --> other port will be handled in the next cycle

vendor/freertos/FreeRTOSConfig.h

@@ -10,9 +10,13 @@
 //--------------------------------------------------------------------+
 // See http://www.freertos.org/a00110.html.
 //--------------------------------------------------------------------+
+#if TUSB_CFG_MCU == MCU_LPC43XX
+  #define configCPU_CLOCK_HZ                   CGU_GetPCLKFrequency(CGU_PERIPHERAL_M4CORE)
+#else
+  #define configCPU_CLOCK_HZ                   SystemCoreClock
+#endif
+
 #define configUSE_PREEMPTION                   1
-#define configCPU_CLOCK_HZ                     ( SystemCoreClock )
-//#define configCPU_CLOCK_HZ                   ( CGU_GetPCLKFrequency(CGU_PERIPHERAL_M4CORE))
 #define configTICK_RATE_HZ                     ( ( portTickType ) 1000 )
 #define configMAX_PRIORITIES                   ( ( unsigned portBASE_TYPE ) 8 )
 #define configMINIMAL_STACK_SIZE               ( ( unsigned short ) 128 )
@@ -100,16 +104,29 @@ to all Cortex-M ports, and do not rely on any particular library functions. */
 See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	        ( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 
-#if 0
+//--------------------------------------------------------------------+
+// portmacro.h include path
+//--------------------------------------------------------------------+
+#if defined __CC_ARM
+  #define TOOL_DIR  RVDS
+#elif defined __GNUC__
+  #define TOOL_DIR  GCC
+#elif defined __ICCARM__
+  #define TOOL_DIR  IAR
+#else
+  #error "not yet supported toolchain"
+#endif
+
 #if __CORTEX_M == 4
-
+  #define ARCH_DIR  ARM_CM4F
 #elif __CORTEX_M == 3
-
+  #define ARCH_DIR  ARM_CM3
 #elif __CORTEX_M == 0
-
+  #define ARCH_DIR  ARM_CM0
 #else
 	#error "not yet supported MCU"
 #endif
-#endif
+
+#include XSTRING_(freertos/Source/portable/TOOL_DIR/ARCH_DIR/portmacro.h)
 
 #endif /* __FREERTOS_CONFIG__H */

vendor/freertos/freertos/Source/include/portable.h

@@ -70,44 +70,6 @@
 #ifndef PORTABLE_H
 #define PORTABLE_H
 
-//--------------------------------------------------------------------+
-// TinyUSB modification
-//--------------------------------------------------------------------+
-#if defined __CC_ARM
-  #if __CORTEX_M == 4 // TODO M0 M4
-    #define PORTMACRO_PATH "../portable/RVDS/ARM_CM4F/portmacro.h"
-  #elif __CORTEX_M == 3
-    #define PORTMACRO_PATH "../portable/RVDS/ARM_CM3/portmacro.h"
-  #elif __CORTEX_M == 0
-    #define PORTMACRO_PATH "../portable/RVDS/ARM_CM0/portmacro.h"
-  #endif
-
-#elif defined __GNUC__
-  #if __CORTEX_M == 4
-    #define PORTMACRO_PATH "../portable/GCC/ARM_CM4F/portmacro.h"
-  #elif __CORTEX_M == 3
-    #define PORTMACRO_PATH "../portable/GCC/ARM_CM3/portmacro.h"
-  #elif __CORTEX_M == 0
-    #define PORTMACRO_PATH "../portable/GCC/ARM_CM0/portmacro.h"
-  #endif
-
-#elif defined __ICCARM__
-  #if __CORTEX_M == 4
-    #define PORTMACRO_PATH "../portable/IAR/ARM_CM4F/portmacro.h"
-  #elif __CORTEX_M == 3
-    #define PORTMACRO_PATH "../portable/IAR/ARM_CM3/portmacro.h"
-  #elif __CORTEX_M == 0
-    #define PORTMACRO_PATH "../portable/IAR/ARM_CM0/portmacro.h"
-  #endif
-
-#endif
-
-#ifndef PORTMACRO_PATH
-  #error portmacro.h path is not defined for this toolchain and/or MCU
-#endif
-
-#include PORTMACRO_PATH
-
 /* Include the macro file relevant to the port being used. */
 
 #ifdef OPEN_WATCOM_INDUSTRIAL_PC_PORT

vendor/freertos/readme.md

@@ -0,0 +1,4 @@
+This folder contains 
+- **FreeRTOSConfig.h** configuration file for freeRTOS
+- **freertos_hook.c** implemenation of freeRTOS to application hooks
+- **freertos** an *unmodified copy* of the popular open source FreeRTOS. This will help to ease the upgrade to later version. However, due to Keil unable to have duplicated filenames, I have to change the name of port.c in freertos/Source/portable/RVDS for example ARM_CM3/port.c to ARM_CM3/port_cm3.c to have ability to support/switch among different mcu in one project.