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qpc/examples/80x86/qk/watcom/l/game/bsp.c
Quantum Leaps 696f5cef7b 4.5.02
2012-08-14 18:07:04 -04:00

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/*****************************************************************************
* Product: "Fly 'n' Shoot" game example, preemptive QK kernel, Open Watcom
* Last Updated for Version: 4.5.00
* Date of the Last Update: May 18, 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 "game.h"
#include "bsp.h"
#include "video.h" /* the direct video interface */
#include <dos.h> /* for _dos_setvect()/_dos_getvect() */
#include <conio.h> /* for inp()/outp() */
#include <stdlib.h> /* for _exit() */
Q_DEFINE_THIS_FILE
/* Global-scope objects ----------------------------------------------------*/
Lib1_context * volatile impure_ptr1;
Lib2_context * volatile impure_ptr2;
/* Local-scope objects -----------------------------------------------------*/
static void interrupt (*l_dosTmrISR)();
static void interrupt (*l_dosKbdISR)();
#ifdef Q_SPY
static uint16_t l_uart_base; /* QS data uplink UART base address */
QSTimeCtr l_tickTime; /* keeps timetsamp at tick */
static uint8_t l_tmr;
static uint8_t l_kbd;
#define UART_TXFIFO_DEPTH 16
#endif
#define TMR_VECTOR 0x08
#define KBD_VECTOR 0x09
/*..........................................................................*/
static void interrupt ISR_tmr() {
static QEvt const tickEvt = { TIME_TICK_SIG, 0 };
QK_ISR_ENTRY(); /* inform QK about entering the ISR */
QF_TICK(&l_tmr); /* call QF_tick() outside of critical section */
QF_PUBLISH(&tickEvt, &l_tmr); /* publish the tick event */
#ifdef Q_SPY
l_tickTime += 0x10000;
#endif
QK_ISR_EXIT(); /* inform QK about exiting the ISR */
}
/*..........................................................................*/
static void interrupt ISR_kbd() {
uint8_t key; /* key scan code from 8042 kbd controller */
uint8_t kcr; /* get keyboard control register */
static uint8_t ship_pos = GAME_SHIP_Y;
QK_ISR_ENTRY(); /* inform QK about entering the ISR */
key = inp(0x60); /* key scan code from 8042 kbd controller */
kcr = inp(0x61); /* get keyboard control register */
outp(0x61, (uint8_t)(kcr | 0x80)); /* toggle acknowledge bit high */
outp(0x61, kcr); /* toggle acknowledge bit low */
switch (key) {
case 200: /* Up-arrow */
case 208: { /* Down-arrow */
ObjectPosEvt *ope = Q_NEW(ObjectPosEvt, PLAYER_SHIP_MOVE_SIG);
if ((key == (uint8_t)200) && (ship_pos > 0x00)) {
--ship_pos;
}
else if ((key == (uint8_t)208)
&& (ship_pos < (GAME_SCREEN_HEIGHT - 3))) {
++ship_pos;
}
ope->x = (uint8_t)GAME_SHIP_X; /* x-position is fixed */
ope->y = (uint8_t)ship_pos;
QACTIVE_POST(AO_Ship, (QEvt *)ope, &l_kbd); /* to the ship */
Video_printNumAt(24, 24, VIDEO_FGND_YELLOW, ship_pos);
break;
}
case 57: { /* Space */
static uint16_t ntrig = 0;
static QEvt const fireEvt = { PLAYER_TRIGGER_SIG, 0 };
QF_PUBLISH(&fireEvt, &l_kbd);
Video_printNumAt(47, 24, VIDEO_FGND_YELLOW, ++ntrig);
break;
} /* Esc */
case 129: {
static QEvt const quitEvt = { PLAYER_QUIT_SIG, 0 };
QF_PUBLISH(&quitEvt, &l_kbd);
break;
}
}
QK_ISR_EXIT(); /* inform QK about exiting the ISR */
}
/*..........................................................................*/
void BSP_init(int argc, char *argv[]) {
char const *com = "COM1";
if (argc > 1) {
com = argv[1];
(void)com; /* avoid compiler warning if QS is not used */
}
if (!QS_INIT(com)) { /* initialize QS */
Q_ERROR();
}
QS_OBJ_DICTIONARY(&l_tmr);
QS_OBJ_DICTIONARY(&l_kbd);
Video_clearScreen(VIDEO_BGND_LIGHT_GRAY);
Video_clearRect( 0, 0, 80, 1, VIDEO_BGND_RED | VIDEO_BLINK);
Video_clearRect( 0, 8, 80, 24, VIDEO_BGND_BLACK | VIDEO_FGND_WHITE);
Video_clearRect( 0, 7, 80, 8, VIDEO_BGND_BLUE);
Video_clearRect( 0, 24, 80, 25, VIDEO_BGND_BLUE);
Video_clearRect(24, 24, 28, 25, VIDEO_BGND_RED | VIDEO_BLINK);
Video_clearRect(24, 24, 28, 25, VIDEO_BGND_RED | VIDEO_BLINK);
Video_printStrAt(35, 0, VIDEO_FGND_WHITE, "FLY 'n' SHOOT");
Video_printStrAt(15, 2, VIDEO_FGND_BLACK,
"Press UP-arrow to move the space ship up");
Video_printStrAt(15, 3, VIDEO_FGND_BLACK,
"Press DOWN-arrow to move the space ship down");
Video_printStrAt(15, 4, VIDEO_FGND_BLACK,
"Press SPACE to fire the missile");
Video_printStrAt(15, 5, VIDEO_FGND_BLACK,
"Press ESC to quit the game");
Video_printStrAt( 8, 24, VIDEO_FGND_WHITE, "Ship Position:");
Video_printStrAt(37, 24, VIDEO_FGND_WHITE, "Triggers:");
Video_printStrAt(61, 24, VIDEO_FGND_WHITE, "Score:");
Video_clearRect(24, 24, 28, 25, VIDEO_BGND_RED);
Video_clearRect(47, 24, 51, 25, VIDEO_BGND_RED);
Video_clearRect(68, 24, 72, 25, VIDEO_BGND_RED);
Video_printNumAt(24, 24, VIDEO_FGND_YELLOW, 0);
Video_printNumAt(47, 24, VIDEO_FGND_YELLOW, 0);
Video_printNumAt(68, 24, VIDEO_FGND_YELLOW, 0);
}
/*..........................................................................*/
void BSP_drawBitmap(uint8_t const *bitmap, uint8_t width, uint8_t height) {
Video_drawBitmapAt(0, 8, bitmap, width, height);
}
/*..........................................................................*/
void BSP_drawNString(uint8_t x, uint8_t y, char const *str) {
Video_drawStringAt(x, 8 + y*8, str);
}
/*..........................................................................*/
void BSP_updateScore(uint16_t score) {
if (score == 0) {
Video_clearRect(68, 24, 72, 25, VIDEO_BGND_RED);
}
Video_printNumAt(68, 24, VIDEO_FGND_YELLOW, score);
}
/*..........................................................................*/
void BSP_displayOn(void) {
}
/*..........................................................................*/
void BSP_displayOff(void) {
Video_clearRect( 0, 8, 80, 24, VIDEO_BGND_BLACK | VIDEO_FGND_WHITE);
}
/*..........................................................................*/
void QF_onStartup(void) {
uint16_t count;
/* save the origingal DOS vectors ... */
l_dosTmrISR = _dos_getvect(TMR_VECTOR);
l_dosKbdISR = _dos_getvect(KBD_VECTOR);
QF_INT_DISABLE();
count = (uint16_t)(((1193180 * 2) / BSP_TICKS_PER_SEC + 1) >> 1);
outp(0x43, 0x36); /* use mode-3 for timer 0 in the 8254 */
outp(0x40, count & 0xFF); /* load low byte of timer 0 */
outp(0x40, (count >> 8) & 0xFF); /* load high byte of timer 0 */
_dos_setvect(TMR_VECTOR, &ISR_tmr);
_dos_setvect(KBD_VECTOR, &ISR_kbd);
QF_INT_ENABLE();
}
/*..........................................................................*/
void QF_onCleanup(void) {
/* restore the DOS system clock tick rate... */
QF_INT_DISABLE();
outp(0x43, 0x36); /* use mode-3 for timer 0 in the 8254 */
outp(0x40, 0); /* load low byte of timer 0 */
outp(0x40, 0); /* load high byte of timer 0 */
/* restore the original DOS vectors ... */
_dos_setvect(TMR_VECTOR, l_dosTmrISR);
_dos_setvect(KBD_VECTOR, l_dosKbdISR);
QF_INT_ENABLE();
QS_EXIT(); /* exit QS */
_exit(0); /* exit to DOS */
}
/*..........................................................................*/
void QK_onIdle(void) {
#ifdef Q_SPY
if ((inp(l_uart_base + 5) & (1 << 5)) != 0) { /* Tx FIFO empty? */
uint16_t fifo = UART_TXFIFO_DEPTH; /* depth of the 15550 Tx FIFO */
uint8_t const *block;
QF_INT_DISABLE();
block = QS_getBlock(&fifo); /* try to get next block to transmit */
QF_INT_ENABLE();
while (fifo-- != 0) { /* any bytes in the block? */
outp(l_uart_base + 0, *block++);
}
}
#endif
}
/*--------------------------------------------------------------------------*/
void Q_onAssert(char const Q_ROM * const Q_ROM_VAR file, int line) {
Video_clearRect ( 0, 24, 80, 25, VIDEO_BGND_RED);
Video_printStrAt( 0, 24, VIDEO_FGND_WHITE, "ASSERTION FAILED in file:");
Video_printStrAt(26, 24, VIDEO_FGND_YELLOW, file);
Video_printStrAt(57, 24, VIDEO_FGND_WHITE, "line:");
Video_printNumAt(62, 24, VIDEO_FGND_YELLOW, line);
QF_stop(); /* stop QF and cleanup */
}
/*--------------------------------------------------------------------------*/
#ifdef Q_SPY
/*..........................................................................*/
static uint8_t UART_config(char const *comName, uint32_t baud) {
switch (comName[3]) { /* Set the base address of the COMx port */
case '1': l_uart_base = (uint16_t)0x03F8; break; /* COM1 */
case '2': l_uart_base = (uint16_t)0x02F8; break; /* COM2 */
case '3': l_uart_base = (uint16_t)0x03E8; break; /* COM3 */
case '4': l_uart_base = (uint16_t)0x02E8; break; /* COM4 */
default: return (uint8_t)0; /* COM port out of range failure */
}
baud = (uint16_t)(115200UL / baud); /* divisor for baud rate */
outp(l_uart_base + 3, (1 << 7)); /* Set divisor access bit (DLAB) */
outp(l_uart_base + 0, (uint8_t)baud); /* Load divisor */
outp(l_uart_base + 1, (uint8_t)(baud >> 8));
outp(l_uart_base + 3, (1 << 1) | (1 << 0)); /* LCR:8-bits,no p,1stop */
outp(l_uart_base + 4, (1 << 3) | (1 << 1) | (1 << 0)); /* DTR,RTS,Out2 */
outp(l_uart_base + 1, 0); /* Put UART into the polling FIFO mode */
outp(l_uart_base + 2, (1 << 2) | (1 << 0)); /* FCR: enable, TX clear */
return (uint8_t)1; /* success */
}
/*..........................................................................*/
uint8_t QS_onStartup(void const *arg) {
static uint8_t qsBuf[1*1024]; /* buffer for Quantum Spy */
QS_initBuf(qsBuf, sizeof(qsBuf));
/* 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);
return UART_config((char const *)arg, 115200UL);
}
/*..........................................................................*/
void QS_onCleanup(void) {
}
/*..........................................................................*/
QSTimeCtr QS_onGetTime(void) { /* invoked with interrupts locked */
static uint32_t l_lastTime;
uint32_t now;
uint16_t count16; /* 16-bit count from the 8254 */
outp(0x43, 0); /* latch the 8254's counter-0 count */
count16 = (uint16_t)inp(0x40); /* read the low byte of counter-0 */
count16 += ((uint16_t)inp(0x40) << 8); /* add on the hi byte */
now = l_tickTime + (0x10000 - count16);
if (l_lastTime > now) { /* are we going "back" in time? */
now += 0x10000; /* assume that there was one rollover */
}
l_lastTime = now;
return (QSTimeCtr)now;
}
/*..........................................................................*/
void QS_onFlush(void) {
uint16_t b;
while ((b = QS_getByte()) != QS_EOD) { /* next QS trace byte available? */
while ((inp(l_uart_base + 5) & (1 << 5)) == 0) { /* not empty? */
}
outp(l_uart_base + 0, (uint8_t)b); /* put the byte to TX FIFO */
}
}
#endif /* Q_SPY */
/*--------------------------------------------------------------------------*/
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