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qpc/examples/80x86/dos/watcom/l/sls/bsp.c

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4.5.02
2012-08-14 18:07:04 -04:00
/*****************************************************************************
* Product: BSP for State-Local Storage Example, 80x86, Vanilla, 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" /* the port of the QP framework */
#include "num_ent.h"
#include "ui.h"
#include "bsp.h"
#include "video.h"
#include <dos.h> /* for _dos_setvect()/_dos_getvect() */
#include <conio.h> /* for inp()/outp() */
#include <stdlib.h> /* for _exit() */
Q_DEFINE_THIS_FILE
/* 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() {
QF_ISR_ENTRY(); /* QF-specific ISR entry */
QF_TICK(&l_tmr); /* call QF_tick() outside of critical section */
#ifdef Q_SPY
l_tickTime += 0x10000;
#endif
QF_ISR_EXIT(); /* QF-specific ISR exit */
}
/*..........................................................................*/
static void interrupt ISR_kbd() {
uint8_t key;
uint8_t kcr;
KeyboardEvt *ke;
QF_ISR_ENTRY(); /* QF-specific ISR entry */
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) {
default: {
// Video_printNumAt(1, 24, VIDEO_FGND_YELLOW, key);
break;
}
case 2: /* '1' */
case 3: /* '2' */
case 4: /* '3' */
case 5: /* '4' */
case 6: /* '5' */
case 7: /* '6' */
case 8: /* '7' */
case 9: /* '8' */
case 10: { /* '9' */
ke = Q_NEW(KeyboardEvt, DIGIT_1_9_SIG);
ke->key_code = '0' + (key - 1);
QACTIVE_POST(AO_UI, (QEvt *)ke, &l_kbd);
break;
}
case 11: { /* '0' */
KeyboardEvt *ke = Q_NEW(KeyboardEvt, DIGIT_0_SIG);
ke->key_code = '0';
QACTIVE_POST(AO_UI, (QEvt *)ke, &l_kbd);
break;
}
case 52: { /* '.' */
ke = Q_NEW(KeyboardEvt, POINT_SIG);
ke->key_code = '.';
QACTIVE_POST(AO_UI, (QEvt *)ke, &l_kbd);
break;
}
case 12: { /* '-' */
ke = Q_NEW(KeyboardEvt, NEG_SIG);
ke->key_code = '-';
QACTIVE_POST(AO_UI, (QEvt *)ke, &l_kbd);
break;
}
case 46: { /* 'c' */
static QEvt const ce = { C_SIG, 0, 0 };
QACTIVE_POST(AO_UI, (QEvt *)&ce, &l_kbd);
break;
}
case 18: { /* 'e' */
static QEvt const cee = { CE_SIG, 0, 0 };
QACTIVE_POST(AO_UI, (QEvt *)&cee, &l_kbd);
break;
}
case 28: { /* ENTER */
static QEvt const ee = { ENTER_SIG, 0, 0 };
QACTIVE_POST(AO_UI, (QEvt *)&ee, &l_kbd);
break;
}
case 200: { /* UP-arrow */
static QEvt const ue = { UP_SIG, 0, 0 };
QACTIVE_POST(AO_UI, (QEvt *)&ue, &l_kbd);
break;
}
case 208: { /* DOWN-arrow */
static QEvt const de = { DOWN_SIG, 0, 0 };
QACTIVE_POST(AO_UI, (QEvt *)&de, &l_kbd);
break;
}
case 59: { /* F1 */
static QEvt const he = { HELP_SIG, 0, 0 };
QACTIVE_POST(AO_UI, (QEvt *)&he, &l_kbd);
break;
}
case 129: { /* ESC */
static QEvt const qe = { QUIT_SIG, 0, 0 };
QF_PUBLISH(&qe, &l_kbd);
break;
}
}
QF_ISR_EXIT(); /* QF-specific ISR exit */
}
/*..........................................................................*/
void BSP_init(int argc, char *argv[]) {
char const *com = "COM1";
com = com; /* avoid compiler warning if QS is not used */
if (argc > 1) {
com = argv[1];
}
if (!QS_INIT(com)) { /* initialize QS */
Q_ERROR();
}
}
/*..........................................................................*/
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 QF_onIdle(void) {
5.1.0b
2013-09-30 12:54:30 -04:00
QF_INT_ENABLE(); /* always enable interrupts */
4.5.02
2012-08-14 18:07:04 -04:00
#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
}
/*..........................................................................*/
/* this function is used by the QP embedded systems-friendly assertions */
void Q_onAssert(char const * const 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);
_exit(-1);
}
//----------------------------------------------------------------------------
#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,Out */
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));
QS_FILTER_ON(QS_SIG_DICTIONARY);
QS_FILTER_ON(QS_OBJ_DICTIONARY);
QS_FILTER_ON(QS_FUN_DICTIONARY);
QS_FILTER_ON(QS_ASSERT);
QS_FILTER_ON(QS_QEP_STATE_EMPTY);
QS_FILTER_ON(QS_QEP_STATE_ENTRY);
QS_FILTER_ON(QS_QEP_STATE_EXIT);
QS_FILTER_ON(QS_QEP_STATE_INIT);
QS_FILTER_ON(QS_QEP_INIT_TRAN);
QS_FILTER_ON(QS_QEP_INTERN_TRAN);
QS_FILTER_ON(QS_QEP_TRAN);
QS_FILTER_ON(QS_QEP_IGNORED);
QS_FILTER_ON(QS_QF_ACTIVE_ADD);
QS_FILTER_ON(QS_QF_ACTIVE_REMOVE);
QS_FILTER_ON(QS_QF_ACTIVE_SUBSCRIBE);
QS_FILTER_ON(QS_QF_ACTIVE_UNSUBSCRIBE);
QS_FILTER_ON(QS_QF_ACTIVE_POST_FIFO);
QS_FILTER_ON(QS_QF_ACTIVE_POST_LIFO);
QS_FILTER_ON(QS_QF_ACTIVE_GET);
QS_FILTER_ON(QS_QF_ACTIVE_GET_LAST);
QS_FILTER_ON(QS_QF_EQUEUE_INIT);
QS_FILTER_ON(QS_QF_EQUEUE_POST_FIFO);
QS_FILTER_ON(QS_QF_EQUEUE_POST_LIFO);
QS_FILTER_ON(QS_QF_EQUEUE_GET);
QS_FILTER_ON(QS_QF_EQUEUE_GET_LAST);
QS_FILTER_ON(QS_QF_MPOOL_INIT);
QS_FILTER_ON(QS_QF_MPOOL_GET);
QS_FILTER_ON(QS_QF_MPOOL_PUT);
QS_FILTER_ON(QS_QF_PUBLISH);
QS_FILTER_ON(QS_QF_NEW);
QS_FILTER_ON(QS_QF_GC_ATTEMPT);
QS_FILTER_ON(QS_QF_GC);
// QS_FILTER_ON(QS_QF_TICK);
QS_FILTER_ON(QS_QF_TIMEEVT_ARM);
QS_FILTER_ON(QS_QF_TIMEEVT_AUTO_DISARM);
QS_FILTER_ON(QS_QF_TIMEEVT_DISARM_ATTEMPT);
QS_FILTER_ON(QS_QF_TIMEEVT_DISARM);
QS_FILTER_ON(QS_QF_TIMEEVT_REARM);
QS_FILTER_ON(QS_QF_TIMEEVT_POST);
// QS_FILTER_OFF(QS_QF_CRIT_ENTRY);
// QS_FILTER_OFF(QS_QF_CRIT_EXIT);
// QS_FILTER_ON(QS_QF_ISR_ENTRY);
// QS_FILTER_ON(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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