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QP is an event-driven, RTOS-like, active object framework for microcontrollers, such as mbed. The QP framework provides thread-safe execution of active objects (concurrent state machines) and support both manual and automatic coding of UML statecharts in readable, production-quality C or C++. Automatic code generation of QP code is supported by the free QM modeling tool.

Dependents:   qp_hangman qp_dpp qp_blinky

QP/C++ (Quantum Platform in C++) is a lightweight, open source active object (actor) framework for building responsive and modular real-time embedded applications as systems of asynchronous event-driven active objects (actors). The QP/C++ framework is a member of a larger family consisting of QP/C++, QP/C, and QP-nano frameworks, which are all strictly quality controlled, thoroughly documented, and available under GPLv3 with a special Exception for mbed (see http://www.state-machine.com/licensing/QP-mbed_GPL_Exception.txt).

The behavior of active objects is specified in QP/C++ by means of hierarchical state machines (UML statecharts). The framework supports manual coding of UML state machines in C++ as well as automatic code generation by means of the free QM modeling tool (http://www.state-machine.com/qm).

Please see the "QP/C++ Reference Manual" (http://www.state-machine.com/qpcpp) for more information.

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API Documentation at this revision

Revision 5:949864ba515c, committed 2011-09-25

Comitter:
QL
Date:
Sun Sep 25 18:10:41 2011 +0000
Parent:
4:156463fbfae6
Child:
6:01d57c81e96a
Commit message:
4.2.04

Changed in this revision

qk_port.s Show annotated file Show diff for this revision Revisions of this file
qp.h Show annotated file Show diff for this revision Revisions of this file
qp_port.h Show annotated file Show diff for this revision Revisions of this file 
--- a/qk_port.s	Tue Feb 22 15:35:14 2011 +0000
+++ b/qk_port.s	Sun Sep 25 18:10:41 2011 +0000
@@ -1,7 +1,7 @@
 ;*****************************************************************************
 ; Product: QK port to ARM Cortex-M0/M3, mbed ARM assembler, CMSIS-compliant
-; Last Updated for Version: 4.1.06
-; Date of the Last Update:  Feb 07, 2011
+; Last Updated for Version: 4.2.04
+; Date of the Last Update:  Sep 23, 2011
 ;
 ;                    Q u a n t u m     L e a P s
 ;                    ---------------------------
@@ -37,8 +37,8 @@
 
 ;*****************************************************************************
 ;
-; The QK_init function sets the priorities of SVCall and PendSV exceptions
-; to the lowest level possible (0xFF). The function internally disables
+; The QK_init function sets the priorities of PendSV and SVCall exceptions
+; to 0xFF and 0x00, respectively. The function internally disables
 ; interrupts, but restores the original interrupt lock before exit.
 ;
 ;*****************************************************************************
@@ -54,7 +54,7 @@
     STR     r2,[r1,#8]        ; write the System 12-15 Priority Register
     LDR     r2,[r1,#4]        ; load the System 8-11 Priority Register
     LSLS    r3,r3,#8
-    ORRS    r2,r3             ; set PRI_11 (SVCall) to 0xFF
+    BICS    r2,r3             ; set PRI_11 (SVCall) to 0x00
     STR     r2,[r1,#4]        ; write the System 8-11 Priority Register
 
     MSR     PRIMASK,r0        ; restore the original PRIMASK
@@ -85,13 +85,17 @@
 ;*****************************************************************************
 PendSV_Handler
     CPSID   i                 ; disable interrupts at processor level
+    LDR     r0,=0xE000ED04    ; load the NVIC-ICSR register address
+    MOVS    r1,#0x01
+    LSLS    r1,r1,#27         ; make up a mask with only the PENDSVCLR bit set
+    STR     r1,[r0]           ; remove the pending status of PendSV
     LDR     r0,=QK_readySet_  ; load the address of QK_readySet_
     LDRB    r0,[r0]           ; load the first byte of QK_readySet_
     CMP     r0,#0             ; is QK_readySet_ == 0 ?
     BEQ.N   iret              ; if QK_readySet_ == 0, branch to iret
 
-    MOVS    r1,#0x01
-    LSLS    r1,r1,#24         ; make up a task xPSR with only the T bit set
+                              ; at this point r1 contains (1 << 27)
+    LSRS    r1,r1,#3          ; make up a task xPSR with only the T bit set
     LDR     r0,=schedule      ; load the address of sched wrapper (new PC)
     PUSH    {r0-r1}           ; push xPSR,PC
     SUB     sp,sp,#(6*4)      ; don't care for lr,r12,r3,r2,r1,r0

--- a/qp.h	Tue Feb 22 15:35:14 2011 +0000
+++ b/qp.h	Sun Sep 25 18:10:41 2011 +0000
@@ -1,7 +1,7 @@
 //////////////////////////////////////////////////////////////////////////////
 // Product: QP/C++
 // Last Updated for QP ver: 4.1.06 (modified to fit in one file)
-// Date of the Last Update: Feb 22, 2011
+// Date of the Last Update: Jan 26, 2011
 //
 //                    Q u a n t u m     L e a P s
 //                    ---------------------------
@@ -2633,7 +2633,7 @@
 /// to NULL.
 ///
 /// \sa Example of using QS filters in #QS_FILTER_ON documentation
-#define QS_FILTER_AP_OBJ(obj_)  (QS::apObj_ = (obj_))
+#define QS_FILTER_AP_OBJ(obj_)  (QS_apObj_ = (obj_))
 
 
 //////////////////////////////////////////////////////////////////////////////

--- a/qp_port.h	Tue Feb 22 15:35:14 2011 +0000
+++ b/qp_port.h	Sun Sep 25 18:10:41 2011 +0000
@@ -1,7 +1,7 @@
 //////////////////////////////////////////////////////////////////////////////
 // Product: QP/C++ port to ARM Cortex, selectable Vanilla/QK, mbed compiler
 // Last Updated for QP ver: 4.1.06 (modified to fit in one file)
-// Date of the Last Update: Feb 15, 2011
+// Date of the Last Update: Feb 08, 2011
 //
 //                    Q u a n t u m     L e a P s
 //                    ---------------------------
@@ -28,7 +28,7 @@
 #ifndef qp_port_h
 #define qp_port_h
 
-#include "qp_config.h"      // QP config file defined at the application level
+#include "qp_config.h"    // QP configuration defined at the application level
 
 //............................................................................
                                              // QF critical section entry/exit