qpc-rtthread/examples/workstation/calc2/bsp.c

/*****************************************************************************
* Product: Board Support Package (BSP) for the Calculator example
* Last updated for version 6.9.0
* Last updated on  2020-06-24
*
*                    Q u a n t u m  L e a P s
*                    ------------------------
*                    Modern Embedded Software
*
* Copyright (C) 2005 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 "qpc.h"
#include "bsp.h"

#include "safe_std.h" /* portable "safe" <stdio.h>/<string.h> facilities */
#include <stdlib.h>   /* for exit() */

#define DISP_WIDTH      15

/* helper macros to "stringify" values */
#define VAL(x) #x
#define STRINGIFY(x) VAL(x)

static char l_display[DISP_WIDTH + 1]; /* the calculator display */
static int  l_len;  /* number of displayed characters */

/*..........................................................................*/
void BSP_clear(void) {
    memset(l_display, ' ', DISP_WIDTH - 1);
    l_display[DISP_WIDTH - 1] = '0';
    l_display[DISP_WIDTH] = '\0';
    l_len = 0;
}
/*..........................................................................*/
void BSP_insert(int keyId) {
    if (l_len == 0) {
        l_display[DISP_WIDTH - 1] = (char)keyId;
        ++l_len;
    }
    else if (l_len < (DISP_WIDTH - 1)) {
        MEMMOVE_S(&l_display[0], DISP_WIDTH, &l_display[1], DISP_WIDTH - 1);
        l_display[DISP_WIDTH - 1] = (char)keyId;
        ++l_len;
    }
}
/*..........................................................................*/
void BSP_display(double value) {
    SNPRINTF_S(l_display, Q_DIM(l_display),
        "%" STRINGIFY(DISP_WIDTH) ".6g", value);
}
/*..........................................................................*/
void BSP_display_error(char const *err) {
    STRNCPY_S(l_display, DISP_WIDTH, err);
}
/*..........................................................................*/
void BSP_negate(void) {
    BSP_clear();
    l_display[DISP_WIDTH - 2] = '-';
}
/*..........................................................................*/
void BSP_show_display(void) {
    PRINTF_S("\n[%" STRINGIFY(DISP_WIDTH) "s] ", l_display);
}
/*..........................................................................*/
void BSP_exit(void) {
    PRINTF_S("\n%s\n", "Bye! Bye!");
    fflush(stdout);
    QF_onCleanup();
    exit(0);
}
/*..........................................................................*/
double BSP_get_value(void) {
    return strtod(l_display, (char **)0);
}
/*..........................................................................*/
void BSP_message(char const *msg) {
    PRINTF_S("%s", msg);
}

/*..........................................................................*/
void QF_onStartup(void) {
    QF_consoleSetup();
}
/*..........................................................................*/
void QF_onCleanup(void) {
    QF_consoleCleanup();
}
/*..........................................................................*/
void QF_onClockTick(void) {
}

/*..........................................................................*/
/* this function is used by the QP embedded systems-friendly assertions */
Q_NORETURN Q_onAssert(char const * const module, int_t const loc) {
    FPRINTF_S(stderr, "Assertion failed in %s:%d", module, loc);
    QF_onCleanup();
    exit(-1);
}