Diff: bsp.cpp

Revision:

0:efb9ac8d1a88

Child:

2:2e62e514f323

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bsp.cpp	Sat Feb 12 23:22:47 2011 +0000
@@ -0,0 +1,253 @@
+//////////////////////////////////////////////////////////////////////////////
+// Product: BSP for "Dining Philosophers Problem" example, QK kernel
+// Last Updated for Version: 4.1.06
+// Date of the Last Update:  Feb 10, 2011
+//
+//                    Q u a n t u m     L e a P s
+//                    ---------------------------
+//                    innovating embedded systems
+//
+// Copyright (C) 2002-2011 Quantum Leaps, LLC. All rights reserved.
+//
+// This software may be distributed and modified under the terms of the GNU
+// General Public License version 2 (GPL) as published by the Free Software
+// Foundation and appearing in the file GPL.TXT included in the packaging of
+// this file. Please note that GPL Section 2[b] requires that all works based
+// on this software must also be made publicly available under the terms of
+// the GPL ("Copyleft").
+//
+// Alternatively, this software may be distributed and modified under the
+// terms of Quantum Leaps commercial licenses, which expressly supersede
+// the GPL and are specifically designed for licensees interested in
+// retaining the proprietary status of their code.
+//
+// Contact information:
+// Quantum Leaps Web site:  http://www.quantum-leaps.com
+// e-mail:                  info@quantum-leaps.com
+//////////////////////////////////////////////////////////////////////////////
+#include "qp_port.h"
+#include "dpp.h"
+#include "bsp.h"
+#include "LPC17xx.h"
+
+Q_DEFINE_THIS_FILE
+
+// Local-scope objects -------------------------------------------------------
+enum ISR_Priorities {      // ISR priorities starting from the highest urgency
+    GPIOPORTA_PRIO,
+    SYSTICK_PRIO,
+    // ...
+};
+
+#define LED_PORT      LPC_GPIO1
+#define LED1_BIT     (1U << 18)
+#define LED2_BIT     (1U << 20)
+#define LED3_BIT     (1U << 21)
+#define LED4_BIT     (1U << 23)
+
+#ifdef Q_SPY
+    #include "mbed.h"             // mbed is used only for the built-in serial
+
+    QSTimeCtr l_tickTime;
+    QSTimeCtr l_tickPeriod;
+
+    #define QSPY_BAUD_RATE          115200
+
+    enum AppRecords {                    // application-specific trace records
+        PHILO_STAT = QS_USER
+    };
+
+    Serial l_qspy(USBTX, USBRX);
+#endif
+
+//............................................................................
+extern "C" void SysTick_Handler(void) {
+    QK_ISR_ENTRY();                // inform the QK kernel of entering the ISR
+
+#ifdef Q_SPY
+    uint32_t volatile dummy = SysTick->CTRL; // clear the COUNTFLAG in SysTick
+    l_tickTime += l_tickPeriod;              // account for the clock rollover
+#endif
+
+    QF::tick();                               // process all armed time events
+
+    QK_ISR_EXIT();                  // inform the QK kernel of exiting the ISR
+}
+
+//............................................................................
+void BSP_init(void) {
+    SystemInit();                            // initialize the clocking system
+
+                                                     // set LED port to output
+    LED_PORT->FIODIR |= (LED1_BIT | LED2_BIT | LED3_BIT | LED4_BIT);
+    
+                                                             // clear the LEDs
+    LED_PORT->FIOCLR  = (LED1_BIT | LED2_BIT | LED3_BIT | LED4_BIT);
+
+    if (QS_INIT((void *)0) == 0) {       // initialize the QS software tracing
+        Q_ERROR();
+    }
+}
+//............................................................................
+void BSP_displyPhilStat(uint8_t n, char const *stat) {
+                            // represent LEDs in a const array for convenience
+    static uint32_t const led[] = { LED1_BIT, LED2_BIT, LED3_BIT, LED4_BIT };
+    if (n < 3) {
+        if (stat[0] == 'e') {
+            LED_PORT->FIOSET = led[n];
+        }
+        else {
+            LED_PORT->FIOCLR = led[n];
+        }
+    }
+    
+    QS_BEGIN(PHILO_STAT, AO_Philo[n])     // application-specific record begin
+        QS_U8(1, n);                                     // Philosopher number
+        QS_STR(stat);                                    // Philosopher status
+    QS_END()
+}
+//............................................................................
+void BSP_busyDelay(void) {
+    uint32_t volatile i = 10;
+    while (i-- > 0UL) {                                      // busy-wait loop
+    }
+}
+
+//............................................................................
+void QF::onStartup(void) {
+                 // set up the SysTick timer to fire at BSP_TICKS_PER_SEC rate
+    SysTick_Config(SystemCoreClock / BSP_TICKS_PER_SEC);
+
+                          // set priorities of all interrupts in the system...
+    NVIC_SetPriority(SysTick_IRQn, SYSTICK_PRIO);
+    NVIC_SetPriority(EINT0_IRQn,   GPIOPORTA_PRIO);
+
+    NVIC_EnableIRQ(EINT0_IRQn);
+}
+//............................................................................
+void QF::onCleanup(void) {
+}
+//............................................................................
+void QK::onIdle(void) {
+
+    QF_INT_LOCK(dummy);
+    LED_PORT->FIOSET = LED4_BIT;                          // turn the LED4 on
+    LED_PORT->FIOCLR = LED4_BIT;                          // turn the LED4 off
+    QF_INT_UNLOCK(dummy);
+
+#ifdef Q_SPY
+    if (l_qspy.writeable()) {
+        QF_INT_LOCK(dummy);
+        uint16_t b = QS::getByte();
+        QF_INT_UNLOCK(dummy);
+        if (b != QS_EOD) {
+            l_qspy.putc((uint8_t)b);
+        }
+    }
+#else    
+    // put the CPU and peripherals to the low-power mode
+    // you might need to customize the clock management for your application,
+    // see the datasheet for your particular Cortex-M3 MCU. 
+    __WFI();
+#endif
+}
+
+//............................................................................
+void Q_onAssert(char const Q_ROM * const Q_ROM_VAR file, int line) {
+    (void)file;                                      // avoid compiler warning
+    (void)line;                                      // avoid compiler warning
+    QF_INT_LOCK(dummy);          // make sure that all interrupts are disabled
+                                                          // light up all LEDs
+    LED_PORT->FIOSET = (LED1_BIT | LED2_BIT | LED3_BIT | LED4_BIT);
+
+    for (;;) {          // NOTE: replace the loop with reset for final version
+    }
+}
+
+//----------------------------------------------------------------------------
+#ifdef Q_SPY
+//............................................................................
+uint8_t QS::onStartup(void const *arg) {
+    static uint8_t qsBuf[6*256];                     // buffer for Quantum Spy
+    initBuf(qsBuf, sizeof(qsBuf));
+    
+    l_qspy.baud(QSPY_BAUD_RATE);
+    
+    l_tickPeriod = SystemCoreClock / BSP_TICKS_PER_SEC;
+    l_tickTime   = l_tickPeriod;             // to start the timestamp at zero
+
+                                                    // setup the QS filters...
+    QS_FILTER_ON(QS_ALL_RECORDS);
+
+//    QS_FILTER_OFF(QS_QEP_STATE_EMPTY);
+//    QS_FILTER_OFF(QS_QEP_STATE_ENTRY);
+//    QS_FILTER_OFF(QS_QEP_STATE_EXIT);
+//    QS_FILTER_OFF(QS_QEP_STATE_INIT);
+//    QS_FILTER_OFF(QS_QEP_INIT_TRAN);
+//    QS_FILTER_OFF(QS_QEP_INTERN_TRAN);
+//    QS_FILTER_OFF(QS_QEP_TRAN);
+//    QS_FILTER_OFF(QS_QEP_IGNORED);
+
+    QS_FILTER_OFF(QS_QF_ACTIVE_ADD);
+    QS_FILTER_OFF(QS_QF_ACTIVE_REMOVE);
+    QS_FILTER_OFF(QS_QF_ACTIVE_SUBSCRIBE);
+    QS_FILTER_OFF(QS_QF_ACTIVE_UNSUBSCRIBE);
+    QS_FILTER_OFF(QS_QF_ACTIVE_POST_FIFO);
+    QS_FILTER_OFF(QS_QF_ACTIVE_POST_LIFO);
+    QS_FILTER_OFF(QS_QF_ACTIVE_GET);
+    QS_FILTER_OFF(QS_QF_ACTIVE_GET_LAST);
+    QS_FILTER_OFF(QS_QF_EQUEUE_INIT);
+    QS_FILTER_OFF(QS_QF_EQUEUE_POST_FIFO);
+    QS_FILTER_OFF(QS_QF_EQUEUE_POST_LIFO);
+    QS_FILTER_OFF(QS_QF_EQUEUE_GET);
+    QS_FILTER_OFF(QS_QF_EQUEUE_GET_LAST);
+    QS_FILTER_OFF(QS_QF_MPOOL_INIT);
+    QS_FILTER_OFF(QS_QF_MPOOL_GET);
+    QS_FILTER_OFF(QS_QF_MPOOL_PUT);
+    QS_FILTER_OFF(QS_QF_PUBLISH);
+    QS_FILTER_OFF(QS_QF_NEW);
+    QS_FILTER_OFF(QS_QF_GC_ATTEMPT);
+    QS_FILTER_OFF(QS_QF_GC);
+//    QS_FILTER_OFF(QS_QF_TICK);
+    QS_FILTER_OFF(QS_QF_TIMEEVT_ARM);
+    QS_FILTER_OFF(QS_QF_TIMEEVT_AUTO_DISARM);
+    QS_FILTER_OFF(QS_QF_TIMEEVT_DISARM_ATTEMPT);
+    QS_FILTER_OFF(QS_QF_TIMEEVT_DISARM);
+    QS_FILTER_OFF(QS_QF_TIMEEVT_REARM);
+    QS_FILTER_OFF(QS_QF_TIMEEVT_POST);
+    QS_FILTER_OFF(QS_QF_INT_LOCK);
+    QS_FILTER_OFF(QS_QF_INT_UNLOCK);
+    QS_FILTER_OFF(QS_QF_ISR_ENTRY);
+    QS_FILTER_OFF(QS_QF_ISR_EXIT);
+
+//    QS_FILTER_OFF(QS_QK_MUTEX_LOCK);
+//    QS_FILTER_OFF(QS_QK_MUTEX_UNLOCK);
+//    QS_FILTER_OFF(QS_QK_SCHEDULE);
+
+    return (uint8_t)1;                                       // return success
+}
+//............................................................................
+void QS::onCleanup(void) {
+}
+//............................................................................
+QSTimeCtr QS::onGetTime(void) {              // invoked with interrupts locked
+    if ((SysTick->CTRL & 0x00000100) == 0) {              // COUNTFLAG no set?
+        return l_tickTime - (QSTimeCtr)SysTick->VAL;
+    }
+    else {        // the rollover occured, but the SysTick_ISR did not run yet
+        return l_tickTime + l_tickPeriod - (QSTimeCtr)SysTick->VAL;
+    }
+}
+//............................................................................
+void QS::onFlush(void) {
+    uint16_t b;
+    QF_INT_LOCK(dummy);
+    while ((b = QS::getByte()) != QS_EOD) {
+        while (!l_qspy.writeable()) {    // wait until serial port is writable
+        }
+        l_qspy.putc((uint8_t)b);
+    }
+    QF_INT_UNLOCK(dummy);
+}
+#endif                                                                // Q_SPY
+//----------------------------------------------------------------------------