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qpcpp/examples/80x86/dos/watcom/l/sls/bsp.cpp

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4.5.01
2012-08-14 18:00:48 -04:00
//////////////////////////////////////////////////////////////////////////////
// Product: Board Support Package (BSP) for the UI example
// Last Updated for Version: 4.5.00
// Date of the Last Update: May 20, 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
#define UART_TXFIFO_DEPTH 16
#endif
#define TMR_VECTOR 0x08
#define KBD_VECTOR 0x09
//............................................................................
static void interrupt ISR_tmr() {
QF_ISR_ENTRY();
QF::tick(); // process all armed time events
#ifdef Q_SPY
l_tickTime += 0x10000;
#endif
QF_ISR_EXIT();
}
//............................................................................
static void interrupt ISR_kbd() {
QF_ISR_ENTRY();
uint8_t key = inp(0x60); // key scan code from 8042 kbd controller
uint8_t kcr = inp(0x61); // get keyboard control register
outp(0x61, (uint8_t)(kcr | 0x80)); // toggle acknowledge bit high
outp(0x61, kcr); // toggle acknowledge bit low
KeyboardEvt *ke;
switch (key) {
default: {
// Video::printNumAt(1, 24, Video::FGND_YELLOW, key);
break;
}
case 11: { // '0'
KeyboardEvt *ke = Q_NEW(KeyboardEvt, DIGIT_0_SIG);
ke->key_code = '0';
AO_UI->postFIFO(ke);
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);
AO_UI->postFIFO(ke);
break;
}
case 52: { // '.'
ke = Q_NEW(KeyboardEvt, POINT_SIG);
ke->key_code = '.';
AO_UI->postFIFO(ke);
break;
}
case 12: { // '-'
ke = Q_NEW(KeyboardEvt, NEG_SIG);
ke->key_code = '-';
AO_UI->postFIFO(ke);
break;
}
case 46: { // 'c'
static QEvt const ce = { C_SIG, 0 };
AO_UI->postFIFO(&ce);
break;
}
case 18: { // 'e'
static QEvt const cee = { CE_SIG, 0 };
AO_UI->postFIFO(&cee);
break;
}
case 28: { // ENTER
static QEvt const ee = { ENTER_SIG, 0 };
AO_UI->postFIFO(&ee);
break;
}
case 200: { // UP-arrow
static QEvt const ue = { UP_SIG, 0 };
AO_UI->postFIFO(&ue);
break;
}
case 208: { // DOWN-arrow
static QEvt const de = { DOWN_SIG, 0 };
AO_UI->postFIFO(&de);
break;
}
case 59: { // F1
static QEvt const he = { HELP_SIG, 0 };
AO_UI->postFIFO(&he);
break;
}
case 129: { // ESC
static QEvt const qe = { QUIT_SIG, 0 };
QF::publish(&qe);
break;
}
}
QF_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_DISABLE();
QS_EXIT(); // exit QS
_exit(0); // exit to DOS
}
//............................................................................
void QF::onIdle(void) { // NOTE: entered with interrupts DISABLED
QF_INT_ENABLE(); // must at least enable interrupts
#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
extern "C" 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
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_ON(QS_QF_INT_LOCK);
// QS_FILTER_ON(QS_QF_INT_UNLOCK);
// 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 = 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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