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qpcpp/examples/arm-cortex/vanilla/gnu/dpp-lpcxpresso-1343/bsp.cpp
Quantum Leaps e4269e3b15 4.5.03
2012-12-10 16:01:54 -05:00

320 lines
12 KiB
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//////////////////////////////////////////////////////////////////////////////
// Product: DPP example, LPCXpresso-1343 board, Vanilla kernel
// Last Updated for Version: 4.5.02
// Date of the Last Update: Oct 05, 2012
//
// Q u a n t u m L e a P s
// ---------------------------
// innovating embedded systems
//
// Copyright (C) 2002-2012 Quantum Leaps, LLC. All rights reserved.
//
// This program is open source software: you can redistribute it and/or
// modify it under the terms of the GNU General Public License as published
// by the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// Alternatively, this program may be distributed and modified under the
// terms of Quantum Leaps commercial licenses, which expressly supersede
// the GNU General Public License and are specifically designed for
// licensees interested in retaining the proprietary status of their code.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// Contact information:
// Quantum Leaps Web sites: http://www.quantum-leaps.com
// http://www.state-machine.com
// e-mail: info@quantum-leaps.com
//////////////////////////////////////////////////////////////////////////////
#include "qp_port.h"
#include "dpp.h"
#include "bsp.h"
extern "C" {
#include "LPC13xx.h" // LPC13xx definitions
#include "timer16.h"
#include "clkconfig.h"
#include "gpio.h"
#ifdef Q_SPY
#include "uart.h"
#endif
}
//////////////////////////////////////////////////////////////////////////////
namespace DPP {
Q_DEFINE_THIS_FILE
#define LED_PORT 0
#define LED_BIT 7
#define LED_ON 1
#define LED_OFF 0
enum ISR_Priorities { // ISR priorities starting from the highest urgency
PIOINT0_PRIO,
SYSTICK_PRIO,
// ...
};
//............................................................................
static unsigned l_rnd; // random seed
#ifdef Q_SPY
QP::QSTimeCtr QS_tickTime_;
QP::QSTimeCtr QS_tickPeriod_;
static uint8_t l_SysTick_Handler;
static uint8_t l_GPIOPortA_IRQHandler;
#define QS_BUF_SIZE (2*1024)
#define QS_BAUD_RATE 115200
enum AppRecords { // application-specific trace records
PHILO_STAT = QP::QS_USER
};
#endif
//............................................................................
extern "C" void SysTick_Handler(void) __attribute__((__interrupt__));
extern "C" void SysTick_Handler(void) {
#ifdef Q_SPY
uint32_t dummy = SysTick->CTRL; // clear NVIC_ST_CTRL_COUNT flag
QS_tickTime_ += QS_tickPeriod_; // account for the clock rollover
#endif
QP::QF::TICK(&l_SysTick_Handler); // process all armed time events
}
//............................................................................
extern "C" void PIOINT0_IRQHandler(void) __attribute__((__interrupt__));
extern "C" void PIOINT0_IRQHandler(void) {
AO_Table->POST(Q_NEW(QP::QEvt, MAX_PUB_SIG), // for testing
&l_GPIOPortA_IRQHandler);
}
//............................................................................
void BSP_init(void) {
SystemInit(); // initialize the clocking system
GPIOInit(); // initialize GPIO (sets up clock)
GPIOSetDir(LED_PORT, LED_BIT, 1); // set port for LED to output
if (QS_INIT((void *)0) == 0) { // initialize the QS software tracing
Q_ERROR();
}
QS_RESET();
QS_OBJ_DICTIONARY(&l_SysTick_Handler);
QS_OBJ_DICTIONARY(&l_GPIOPortA_IRQHandler);
}
//............................................................................
void BSP_terminate(int16_t result) {
(void)result;
}
//............................................................................
void BSP_displayPhilStat(uint8_t n, char const *stat) {
if (stat[0] == 'e') {
GPIOSetValue(LED_PORT, LED_BIT, LED_ON); // LED on
}
else {
GPIOSetValue(LED_PORT, LED_BIT, LED_OFF); // LED off
}
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_displayPaused(uint8_t paused) {
(void)paused;
}
//............................................................................
uint32_t BSP_random(void) { // a very cheap pseudo-random-number generator
// "Super-Duper" Linear Congruential Generator (LCG)
// LCG(2^32, 3*7*11*13*23, 0, seed)
//
l_rnd = l_rnd * (3*7*11*13*23);
return l_rnd >> 8;
}
//............................................................................
void BSP_randomSeed(uint32_t seed) {
l_rnd = seed;
}
} // namespace DPP
//////////////////////////////////////////////////////////////////////////////
//............................................................................
extern "C" void Q_onAssert(char const * const file, int line) {
(void)file; // avoid compiler warning
(void)line; // avoid compiler warning
QF_INT_DISABLE(); // make sure that all interrupts are disabled
for (;;) { // NOTE: replace the loop with reset for final version
}
}
//............................................................................
// error routine that is called if the STM32 library encounters an error
extern "C" void assert_failed(char const *file, int line) {
Q_onAssert(file, line);
}
namespace QP {
//............................................................................
void QF::onStartup(void) {
// Set up and enable the SysTick timer. It will be used as a reference
// for delay loops in the interrupt handlers. The SysTick timer period
// will be set up for BSP_TICKS_PER_SEC.
//
SysTick_Config(SystemCoreClock / DPP::BSP_TICKS_PER_SEC);
// enable EINT0 interrupt, which is used for testing preemptions
NVIC_EnableIRQ(EINT0_IRQn);
// set priorities of all interrupts in the system...
NVIC_SetPriority(SysTick_IRQn, DPP::SYSTICK_PRIO);
NVIC_SetPriority(EINT0_IRQn, DPP::PIOINT0_PRIO);
}
//............................................................................
void QF::onCleanup(void) {
}
//............................................................................
void QF::onIdle(void) { // entered with interrupts DISABLED, see NOTE01
// toggle the blue LED on and then off, see NOTE02
//GPIOSetValue(LED_PORT, LED_BIT, LED_ON); // LED on
//GPIOSetValue(LED_PORT, LED_BIT, LED_OFF); // LED off
#ifdef Q_SPY
QF_INT_ENABLE();
if ((LPC_UART->LSR & LSR_THRE) != 0) { // is THR empty?
QF_INT_DISABLE();
uint16_t b = QS::getByte();
QF_INT_ENABLE();
if (b != QS_EOD) { // not End-Of-Data?
LPC_UART->THR = (b & 0xFF); // put into the THR register
}
}
#elif defined NDEBUG
// put the CPU and peripherals to the low-power mode
__WFI(); // stop clocking the CPU and wait for interrupt
QF_INT_ENABLE();
#else
QF_INT_ENABLE();
#endif
}
//----------------------------------------------------------------------------
#ifdef Q_SPY
//............................................................................
bool QS::onStartup(void const *arg) {
static uint8_t qsBuf[QS_BUF_SIZE]; // buffer for Quantum Spy
initBuf(qsBuf, sizeof(qsBuf));
UARTInit(QS_BAUD_RATE); // initialize the UART with the desired baud rate
NVIC_DisableIRQ(UART_IRQn); // do not use the interrupts (QS uses polling)
LPC_UART->IER = 0;
DPP::QS_tickPeriod_ = (QSTimeCtr)(SystemCoreClock/DPP::BSP_TICKS_PER_SEC);
DPP::QS_tickTime_ = DPP::QS_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_CRIT_ENTRY);
QS_FILTER_OFF(QS_QF_CRIT_EXIT);
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 true; // return success
}
//............................................................................
void QS::onCleanup(void) {
}
//............................................................................
QSTimeCtr QS::onGetTime(void) { // invoked with interrupts locked
if ((SysTick->CTRL & 0x00010000U) == 0U) { // COUNT no set?
return DPP::QS_tickTime_ - (QSTimeCtr)SysTick->VAL;
}
else { // the rollover occured, but the SysTick_ISR did not run yet
return DPP::QS_tickTime_ - (QSTimeCtr)SysTick->VAL
+ DPP::QS_tickPeriod_;
}
}
//............................................................................
void QS::onFlush(void) {
uint16_t b;
while ((b = getByte()) != QS_EOD) { // while not End-Of-Data...
while ((LPC_UART->LSR & LSR_THRE) == 0U) { // while TXE not empty
}
LPC_UART->THR = (b & 0xFF); // put into the THR register
}
}
#endif // Q_SPY
//----------------------------------------------------------------------------
} // namespace QP
//////////////////////////////////////////////////////////////////////////////
// NOTE01:
// The QF_onIdle() callback is called with interrupts locked, because the
// determination of the idle condition might change by any interrupt posting
// an event. QF::onIdle() must internally unlock interrupts, ideally
// atomically with putting the CPU to the power-saving mode.
//
// NOTE02:
// The User LED is used to visualize the idle loop activity. The brightness
// of the LED is proportional to the frequency of invcations of the idle loop.
// Please note that the LED is toggled with interrupts locked, so no interrupt
// execution time contributes to the brightness of the User LED.
//
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