Dining Philosophers Problem (DPP) example for the QP active object framework. Demonstrates: event-driven programming, hierarchical state machines in C++, modeling and graphical state machine design, code generation, preemptive multitasking, software tracing, power saving mode, direct event posting, publish-subscribe. More information available in the [[/users/QL/notebook|Quantum Leaps Notebook pages]]. See also [[http://www.state-machine.com|state-machine.com]].
bsp.cpp
- Committer:
- QL
- Date:
- 2011-02-12
- Revision:
- 0:efb9ac8d1a88
- Child:
- 2:2e62e514f323
File content as of revision 0:efb9ac8d1a88:
////////////////////////////////////////////////////////////////////////////// // 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 //----------------------------------------------------------------------------