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302 lines
11 KiB
C++
302 lines
11 KiB
C++
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//////////////////////////////////////////////////////////////////////////////
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// Product: DPP example with lwIP and direct screen output
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// Last Updated for Version: 4.5.00
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// Date of the Last Update: May 20, 2012
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//
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// Q u a n t u m L e a P s
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// ---------------------------
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// innovating embedded systems
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//
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// Copyright (C) 2002-2012 Quantum Leaps, LLC. All rights reserved.
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//
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// This program is open source software: you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as published
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// by the Free Software Foundation, either version 2 of the License, or
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// (at your option) any later version.
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//
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// Alternatively, this program may be distributed and modified under the
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// terms of Quantum Leaps commercial licenses, which expressly supersede
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// the GNU General Public License and are specifically designed for
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// licensees interested in retaining the proprietary status of their code.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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// Contact information:
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// Quantum Leaps Web sites: http://www.quantum-leaps.com
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// http://www.state-machine.com
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// e-mail: info@quantum-leaps.com
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//////////////////////////////////////////////////////////////////////////////
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#include "qp_port.h" // QP port header file
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#include "dpp.h" // application events and active objects
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#include "bsp.h" // Board Support Package header file
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extern "C" {
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#include "rit128x96x4.h" // RITEK 128x96x4 OLED used in Rev C-D boards
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}
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#include <stdio.h>
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Q_DEFINE_THIS_FILE
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// Active object class -------------------------------------------------------
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class Table : public QActive {
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uint8_t m_fork[N_PHILO];
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uint8_t m_isHungry[N_PHILO];
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uint8_t m_displayOn;
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uint8_t m_udpCtr;
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QTimeEvt m_te_DISPLAY_TIMEOUT;
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public:
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Table(); // ctor
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private:
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static QState initial(Table *me, QEvt const *e);
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static QState serving(Table *me, QEvt const *e);
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private:
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void displayInit(void);
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void displayOn(void);
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void displayOff(void);
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void displayPhilStat(uint8_t n, char const *stat);
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void displyIPAddr(char const *ip_addr);
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void displyUdpText(char const *text);
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void displyCgiText(char const *text);
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};
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#define RIGHT(n_) ((uint8_t)(((n_) + (N_PHILO - 1)) % N_PHILO))
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#define LEFT(n_) ((uint8_t)(((n_) + 1) % N_PHILO))
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enum ForkState { FREE, USED };
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#ifdef Q_SPY
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enum AppRecords { // application-specific QS trace records
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PHILO_STAT = QS_USER,
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CGI_TEXT,
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UDP_TEXT,
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};
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#endif
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// Local objects -------------------------------------------------------------
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static Table l_table; // the single instance of the Table active object
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enum TablePrivateSignals {
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DISPLAY_TIMEOUT_SIG = MAX_SIG
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};
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#define DISPLAY_TIMEOUT (BSP_TICKS_PER_SEC * 30)
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// Global-scope objects ------------------------------------------------------
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QActive * const AO_Table = (QActive *)&l_table; // "opaque" AO pointer
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//............................................................................
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Table::Table()
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: QActive((QStateHandler)&Table::initial),
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m_te_DISPLAY_TIMEOUT(DISPLAY_TIMEOUT_SIG)
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{
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uint8_t n;
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for (n = 0; n < N_PHILO; ++n) {
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m_fork[n] = FREE;
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m_isHungry[n] = 0;
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}
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m_udpCtr = 0;
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}
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//............................................................................
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QState Table::initial(Table *me, QEvt const *e) {
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(void)e; // suppress the compiler warning about unused parameter
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me->displayInit(); // Initialize the OLED display
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me->subscribe(DONE_SIG); // subscribe to published events...
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me->subscribe(BTN_DOWN_SIG);
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me->subscribe(DISPLAY_IPADDR_SIG);
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me->subscribe(DISPLAY_CGI_SIG);
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me->subscribe(DISPLAY_UDP_SIG);
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QS_OBJ_DICTIONARY(&l_table);
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QS_FUN_DICTIONARY(&QHsm::top);
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QS_FUN_DICTIONARY(&Table::initial);
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QS_FUN_DICTIONARY(&Table::serving);
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QS_SIG_DICTIONARY(DONE_SIG, static_cast<void *>(0)); // global signals
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QS_SIG_DICTIONARY(EAT_SIG, static_cast<void *>(0));
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QS_SIG_DICTIONARY(DISPLAY_IPADDR_SIG, static_cast<void *>(0));
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QS_SIG_DICTIONARY(DISPLAY_CGI_SIG, static_cast<void *>(0));
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QS_SIG_DICTIONARY(DISPLAY_UDP_SIG, static_cast<void *>(0));
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QS_SIG_DICTIONARY(HUNGRY_SIG, me); // signal just for Table
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QS_SIG_DICTIONARY(DISPLAY_TIMEOUT_SIG, me); // signal just for Table
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return Q_TRAN(&Table::serving);
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}
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//............................................................................
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QState Table::serving(Table *me, QEvt const *e) {
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uint8_t n, m;
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TableEvt *pe;
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switch (e->sig) {
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case Q_ENTRY_SIG: {
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me->m_te_DISPLAY_TIMEOUT.postEvery((QActive *)me,
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DISPLAY_TIMEOUT);
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me->displayOn();
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return Q_HANDLED();
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}
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case Q_EXIT_SIG: {
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me->m_te_DISPLAY_TIMEOUT.disarm();
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me->displayOff();
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return Q_HANDLED();
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}
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case HUNGRY_SIG: {
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n = ((TableEvt const *)e)->philoNum;
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// phil ID must be in range and he must be not hungry
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Q_ASSERT((n < N_PHILO) && (!me->m_isHungry[n]));
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me->displayPhilStat(n, "hungry ");
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m = LEFT(n);
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if ((me->m_fork[m] == FREE) && (me->m_fork[n] == FREE)) {
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me->m_fork[m] = me->m_fork[n] = USED;
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pe = Q_NEW(TableEvt, EAT_SIG);
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pe->philoNum = n;
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QF::PUBLISH(pe, me);
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me->displayPhilStat(n, "eating ");
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}
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else {
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me->m_isHungry[n] = 1;
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}
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return Q_HANDLED();
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}
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case DONE_SIG: {
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n = ((TableEvt const *)e)->philoNum;
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// phil ID must be in range and he must be not hungry
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Q_ASSERT((n < N_PHILO) && (!me->m_isHungry[n]));
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me->displayPhilStat(n, "thinking");
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m = LEFT(n);
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// both forks of Phil[n] must be used
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Q_ASSERT((me->m_fork[n] == USED) && (me->m_fork[m] == USED));
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me->m_fork[m] = me->m_fork[n] = FREE;
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m = RIGHT(n); // check the right neighbor
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if (me->m_isHungry[m] && (me->m_fork[m] == FREE)) {
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me->m_fork[n] = me->m_fork[m] = USED;
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me->m_isHungry[m] = 0;
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pe = Q_NEW(TableEvt, EAT_SIG);
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pe->philoNum = m;
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QF::PUBLISH(pe, me);
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me->displayPhilStat(m, "eating ");
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}
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m = LEFT(n); // check the left neighbor
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n = LEFT(m); // left fork of the left neighbor
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if (me->m_isHungry[m] && (me->m_fork[n] == FREE)) {
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me->m_fork[m] = me->m_fork[n] = USED;
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me->m_isHungry[m] = 0;
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pe = Q_NEW(TableEvt, EAT_SIG);
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pe->philoNum = m;
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QF::PUBLISH(pe, me);
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me->displayPhilStat(m, "eating ");
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}
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return Q_HANDLED();
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}
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case BTN_DOWN_SIG: {
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me->displayOn();
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return Q_HANDLED();
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}
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case DISPLAY_TIMEOUT_SIG: {
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me->displayOff();
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return Q_HANDLED();
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}
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case DISPLAY_IPADDR_SIG: {
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me->displyIPAddr(((TextEvt *)e)->text);
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return Q_HANDLED();
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}
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case DISPLAY_CGI_SIG: {
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me->displyCgiText(((TextEvt *)e)->text);
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return Q_HANDLED();
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}
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case DISPLAY_UDP_SIG: {
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TextEvt *te;
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me->displyUdpText(((TextEvt *)e)->text);
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++me->m_udpCtr;
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te = Q_NEW(TextEvt, SEND_UDP_SIG);
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snprintf(te->text, Q_DIM(te->text), "%s-%d",
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((TextEvt const *)e)->text, (int)me->m_udpCtr);
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AO_LwIPMgr->POST(te, me); // post directly
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return Q_HANDLED();
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}
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}
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return Q_SUPER(&QHsm::top);
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}
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// helper functions for the display ..........................................
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//............................................................................
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void Table::displayInit(void) {
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RIT128x96x4Init(1000000);
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RIT128x96x4StringDraw("IP :", 0*6, 0*8, 5);
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RIT128x96x4StringDraw("DPP: 0 ,1 ,2 ,3 ,4", 0*6, 2*8, 5);
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RIT128x96x4StringDraw("CGI:", 0*6, 4*8, 5);
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RIT128x96x4StringDraw("UDP:", 0*6, 6*8, 5);
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m_displayOn = 1;
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}
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//............................................................................
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void Table::displayOn(void) {
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m_te_DISPLAY_TIMEOUT.rearm(DISPLAY_TIMEOUT);
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if (!m_displayOn) {
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m_displayOn = 1;
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RIT128x96x4DisplayOn();
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}
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}
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//............................................................................
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void Table::displayOff(void) {
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if (m_displayOn) {
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m_displayOn = 0;
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RIT128x96x4DisplayOff();
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}
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}
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//............................................................................
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void Table::displayPhilStat(uint8_t n, char const *stat) {
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if (m_displayOn) {
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char str[2];
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str[0] = stat[0];
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str[1] = '\0';
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RIT128x96x4StringDraw(str, (6*6 + 3*6*n), 2*8, 15);
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}
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QS_BEGIN(PHILO_STAT, AO_Philo[n]) // application-specific record begin
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QS_U8(1, n); // Philosopher number
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QS_STR(stat); // Philosopher status
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QS_END()
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}
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//............................................................................
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void Table::displyIPAddr(char const *ip_addr) {
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displayOn(); // make sure the screen is on
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RIT128x96x4StringDraw(" ", 5*6, 0*8, 15); // wipe
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RIT128x96x4StringDraw(ip_addr, 5*6, 0*8, 15);
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}
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//............................................................................
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void Table::displyCgiText(char const *text) {
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displayOn(); // make sure the screen is on
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RIT128x96x4StringDraw(" ", 5*6, 4*8, 15); // wipe
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RIT128x96x4StringDraw(text, 5*6, 4*8, 15);
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QS_BEGIN(CGI_TEXT, 0) // application-specific record begin
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QS_STR(text); // User text
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QS_END()
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}
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//............................................................................
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void Table::displyUdpText(char const *text) {
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displayOn(); // make sure the screen is on
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RIT128x96x4StringDraw(" ", 5*6, 6*8, 15); // wipe
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RIT128x96x4StringDraw(text, 5*6, 6*8, 15);
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QS_BEGIN(UDP_TEXT, 0) // application-specific record begin
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QS_STR(text); // User text
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QS_END()
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}
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