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qpcpp/examples/emwin/demo_no_wm/table.cpp
QL 7ebb142023 6.9.1
2020-10-01 12:50:17 -04:00

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//////////////////////////////////////////////////////////////////////////////
// Product: DPP example with emWin/uC/GUI, NO Window Manager
// Last updated for version 6.8.0
// Last updated on 2020-01-22
//
// Q u a n t u m L e a P s
// ---------------------------
// innovating embedded systems
//
// Copyright (C) 2005-2020 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 3 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 <www.gnu.org/licenses/>.
//
// Contact information:
// <www.state-machine.com/licensing>
// <info@state-machine.com>
//////////////////////////////////////////////////////////////////////////////
#include "qpcpp.hpp"
#include "dpp.hpp"
#include "bsp.hpp"
extern "C" {
#include "GUI.h"
#include "GUI_SIM.h"
#include "DIALOG.h"
}
Q_DEFINE_THIS_FILE
// Active object class -------------------------------------------------------
class Table : public QActive {
private:
uint8_t m_fork[N_PHILO];
uint8_t m_isHungry[N_PHILO];
public:
Table();
private:
Q_STATE_DECL(initial);
Q_STATE_DECL(ready);
Q_STATE_DECL(serving);
Q_STATE_DECL(paused);
};
#define RIGHT(n_) ((uint8_t)(((n_) + (N_PHILO - 1)) % N_PHILO))
#define LEFT(n_) ((uint8_t)(((n_) + 1) % N_PHILO))
enum m_forkState { FREE, USED };
// Local objects -------------------------------------------------------------
static Table l_table; // local Table object
#ifdef Q_SPY
enum QSUserRecords {
PHILO_STAT = QS_USER,
TABLE_STAT
};
#endif
// Public-scope objects ------------------------------------------------------
QActive * const AO_Table = &l_table; // "opaque" AO pointer
// GUI definition ============================================================
enum YCoord {
PHILO_0_Y = 0,
PHILO_1_Y = 20,
PHILO_2_Y = 40,
PHILO_3_Y = 60,
PHILO_4_Y = 80,
TABLE_Y = 100,
STATE_X = 100
};
static int l_xOrg = 80;
static int l_yOrg = 60;
static char const l_thinking[] = "thinking";
static char const *l_philoStat[N_PHILO] = {
l_thinking, l_thinking, l_thinking, l_thinking, l_thinking
};
static int const l_philoY[N_PHILO] = {
0, 20, 40, 60, 80
};
static char const *l_tableState = " ";
static int const l_tableY = 100;
//............................................................................
static void displyPhilStat(uint8_t n, char const *stat) {
GUI_SetBkColor(GUI_GRAY);
GUI_SetColor(GUI_BLACK);
GUI_SetFont(&GUI_Font13_ASCII);
l_philoStat[n] = stat;
GUI_DispStringAt(stat, l_xOrg + STATE_X, l_yOrg + l_philoY[n]);
QS_BEGIN_ID(PHILO_STAT, AO_Philo[n]->m_prio) // app-specific record begin
QS_U8(1, n); // Philosopher number
QS_STR(stat); // Philosopher status
QS_END()
}
//............................................................................
static void displyTableStat(char const *stat) {
GUI_SetBkColor(GUI_GRAY);
GUI_SetColor(GUI_BLACK);
GUI_SetFont(&GUI_Font13_ASCII);
l_tableState = stat;
GUI_DispStringAt(stat, l_xOrg + STATE_X, l_yOrg + l_tableY);
QS_BEGIN_ID(TABLE_STAT, AO_Table->m_prio) // app-specific record begin
QS_STR(stat); // Philosopher status
QS_END()
}
//............................................................................
static void renderDppScreen(void) {
GUI_SetBkColor(GUI_GRAY);
GUI_Clear();
GUI_SetColor(GUI_BLACK);
GUI_SetFont(&GUI_Font24_ASCII);
GUI_DispStringHCenterAt("Dining Philosophers - Demo", 160, 5);
GUI_SetFont(&GUI_Font13_ASCII);
GUI_DispStringAt("Philosopher 0", l_xOrg, l_yOrg + l_philoY[0]);
GUI_DispStringAt("Philosopher 1", l_xOrg, l_yOrg + l_philoY[1]);
GUI_DispStringAt("Philosopher 2", l_xOrg, l_yOrg + l_philoY[2]);
GUI_DispStringAt("Philosopher 3", l_xOrg, l_yOrg + l_philoY[3]);
GUI_DispStringAt("Philosopher 4", l_xOrg, l_yOrg + l_philoY[4]);
GUI_DispStringAt("Table", l_xOrg, l_yOrg + l_tableY);
displyPhilStat(0, l_philoStat[0]);
displyPhilStat(1, l_philoStat[1]);
displyPhilStat(2, l_philoStat[2]);
displyPhilStat(3, l_philoStat[3]);
displyPhilStat(4, l_philoStat[4]);
}
//............................................................................
static void moveDppScreen(int dx, int dy) {
l_xOrg += dx;
l_yOrg += dy;
renderDppScreen();
}
//............................................................................
Table::Table() : QActive((QStateHandler)&Table::initial) {
uint8_t n;
for (n = 0; n < N_PHILO; ++n) {
m_fork[n] = FREE;
m_isHungry[n] = 0;
}
}
//............................................................................
Q_STATE_DEF(Table, initial) {
GUI_Init(); // initialize the embedded GUI
subscribe(DONE_SIG);
subscribe(PAUSE_SIG);
return tran(&ready);
}
//............................................................................
Q_STATE_DEF(Table, ready) {
switch (e->sig) {
case Q_ENTRY_SIG: {
renderDppScreen();
return Q_RET_HANDLED;
}
case Q_INIT_SIG: {
return tran(&serving);
}
// ... hardkey events ...
case KEY_LEFT_REL_SIG: { // hardkey LEFT released
moveDppScreen(-5, 0);
return Q_RET_HANDLED;
}
case KEY_RIGHT_REL_SIG: { // hardkey RIGHT released
moveDppScreen(5, 0);
return Q_RET_HANDLED;
}
case KEY_DOWN_REL_SIG: { // hardkey DOWN released
moveDppScreen(0, 5);
return Q_RET_HANDLED;
}
case KEY_UP_REL_SIG: { // hardkey UP released
moveDppScreen(0, -5);
return Q_RET_HANDLED;
}
}
return super(&top);
}
//............................................................................
Q_STATE_DEF(Table, serving) {
uint8_t n, m;
TableEvt *pe;
switch (e->sig) {
case Q_ENTRY_SIG: {
displyTableStat("serving");
for (n = 0; n < N_PHILO; ++n) { // give permissions to eat...
if (m_isHungry[n]
&& (m_fork[LEFT(n)] == FREE)
&& (m_fork[n] == FREE))
{
m_fork[LEFT(n)] = m_fork[n] = USED;
pe = Q_NEW(TableEvt, EAT_SIG);
pe->philoNum = n;
QF::PUBLISH(pe, me);
m_isHungry[n] = 0;
displyPhilStat(n, "eating ");
}
}
return Q_RET_HANDLED;
}
case HUNGRY_SIG: {
n = ((TableEvt *)e)->philoNum;
Q_ASSERT(n < N_PHILO && !m_isHungry[n]);
displyPhilStat(n, "hungry ");
m = LEFT(n);
if (m_fork[m] == FREE && m_fork[n] == FREE) {
m_fork[m] = m_fork[n] = USED;
pe = Q_NEW(TableEvt, EAT_SIG);
pe->philoNum = n;
QF::PUBLISH(pe, me);
displyPhilStat(n, "eating ");
}
else {
m_isHungry[n] = 1;
}
return Q_RET_HANDLED;
}
case DONE_SIG: {
n = ((TableEvt *)e)->philoNum;
Q_ASSERT(n < N_PHILO);
displyPhilStat(n, "thinking");
m_fork[LEFT(n)] = m_fork[n] = FREE;
m = RIGHT(n); // check the right neighbor
if (m_isHungry[m] && m_fork[m] == FREE) {
m_fork[n] = m_fork[m] = USED;
m_isHungry[m] = 0;
pe = Q_NEW(TableEvt, EAT_SIG);
pe->philoNum = m;
QF::PUBLISH(pe, me);
displyPhilStat(m, "eating ");
}
m = LEFT(n); // check the left neighbor
n = LEFT(m);
if (m_isHungry[m] && m_fork[n] == FREE) {
m_fork[m] = m_fork[n] = USED;
m_isHungry[m] = 0;
pe = Q_NEW(TableEvt, EAT_SIG);
pe->philoNum = m;
QF::PUBLISH(pe, me);
displyPhilStat(m, "eating ");
}
return Q_RET_HANDLED;
}
case PAUSE_SIG: // "Toggle" button pressed
case KEY_CENTER_PRESS_SIG: { // hardkey CENTER pressed
return tran(&paused);
}
}
return super(&ready);
}
//............................................................................
Q_STATE_DEF(Table, paused) {
uint8_t n;
switch (e->sig) {
case Q_ENTRY_SIG: {
displyTableStat("paused");
return Q_RET_HANDLED;
}
case HUNGRY_SIG: {
n = ((TableEvt *)e)->philoNum;
Q_ASSERT(n < N_PHILO && !m_isHungry[n]);
displyPhilStat(n, "hungry ");
m_isHungry[n] = 1;
return Q_RET_HANDLED;
}
case DONE_SIG: {
n = ((TableEvt *)e)->philoNum;
Q_ASSERT(n < N_PHILO);
displyPhilStat(n, "thinking");
m_fork[LEFT(n)] = m_fork[n] = FREE;
return Q_RET_HANDLED;
}
case PAUSE_SIG: // "Toggle" button pressed
case KEY_CENTER_REL_SIG: { // hardkey CENTER released
return tran(&serving);
}
}
return super(&ready);
}
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