Exemplo n.º 1
0
mraa_init()
{
    if (plat != NULL) {
        return MRAA_ERROR_PLATFORM_ALREADY_INITIALISED;
    }

    uid_t proc_euid = geteuid();
    struct passwd* proc_user = getpwuid(proc_euid);

#ifdef DEBUG
    setlogmask(LOG_UPTO(LOG_DEBUG));
#else
    setlogmask(LOG_UPTO(LOG_NOTICE));
#endif

    openlog("libmraa", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
    syslog(LOG_NOTICE, "libmraa version %s initialised by user '%s' with EUID %d",
           mraa_get_version(), (proc_user != NULL) ? proc_user->pw_name : "<unknown>", proc_euid);

#ifdef SWIGPYTHON
    // Initialise python threads, this allows use to grab the GIL when we are
    // required to do so
    Py_InitializeEx(0);
    PyEval_InitThreads();
#endif
    advance_func = (mraa_adv_func_t*) malloc(sizeof(mraa_adv_func_t));
    memset(advance_func, 0, sizeof(mraa_adv_func_t));

#if defined(X86PLAT)
    // Use runtime x86 platform detection
    platform_type = mraa_x86_platform();
#elif defined(ARMPLAT)
    // Use runtime ARM platform detection
    platform_type = mraa_arm_platform();
#else
#error mraa_ARCH NOTHING
#endif

    if (plat == NULL) {
        printf("mraa: FATAL error, failed to initialise platform\n");
        return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
    }

    syslog(LOG_INFO, "libmraa initialised for platform '%s' of type %d", mraa_get_platform_name(), platform_type);
    return MRAA_SUCCESS;
}
Exemplo n.º 2
0
mraa_init()
{
    if (plat != NULL) {
        return MRAA_ERROR_PLATFORM_ALREADY_INITIALISED;
    }

#ifdef DEBUG
    setlogmask(LOG_UPTO(LOG_DEBUG));
#else
    setlogmask(LOG_UPTO(LOG_NOTICE));
#endif

    openlog("libmraa", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
    syslog(LOG_DEBUG, "libmraa initialised by user %d", getuid());

#ifdef SWIGPYTHON
    // Initialise python threads, this allows use to grab the GIL when we are
    // required to do so
    Py_InitializeEx(0);
    PyEval_InitThreads();
#endif
    advance_func = (mraa_adv_func_t*) malloc(sizeof(mraa_adv_func_t));
    memset(advance_func, 0, sizeof(mraa_adv_func_t));

#ifdef X86PLAT
    // Use runtime x86 platform detection
    platform_type = mraa_x86_platform();
#elif ARMPLAT
    // Use runtime ARM platform detection
    platform_type = mraa_arm_platform();
#else
    #error mraa_ARCH NOTHING
#endif

    if (plat == NULL) {
        printf("mraa: FATAL error, failed to initialise platform\n");
        return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
    }
    syslog(LOG_INFO, "libmraa initialised for platform %d", platform_type);
    return MRAA_SUCCESS;
}
Exemplo n.º 3
0
Arquivo: mraa.c Projeto: MFALHI/mraa
/**
 * Whilst the actual mraa init function is now called imraa_init, it's only
 * callable externally if IMRAA is enabled
 */
mraa_result_t
imraa_init()
{
    if (plat != NULL) {
        return MRAA_SUCCESS;
    }

    uid_t proc_euid = geteuid();
    struct passwd* proc_user = getpwuid(proc_euid);

#ifdef DEBUG
    setlogmask(LOG_UPTO(LOG_DEBUG));
#else
    setlogmask(LOG_UPTO(LOG_NOTICE));
#endif

    openlog("libmraa", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
    syslog(LOG_NOTICE, "libmraa version %s initialised by user '%s' with EUID %d",
           mraa_get_version(), (proc_user != NULL) ? proc_user->pw_name : "<unknown>", proc_euid);

    mraa_platform_t platform_type;
#if defined(X86PLAT)
    // Use runtime x86 platform detection
    platform_type = mraa_x86_platform();
#elif defined(ARMPLAT)
    // Use runtime ARM platform detection
    platform_type = mraa_arm_platform();
#elif defined(MOCKPLAT)
    // Use mock platform
    platform_type = mraa_mock_platform();
#else
#error mraa_ARCH NOTHING
#endif

    if (plat != NULL) {
        plat->platform_type = platform_type;
    } else {
        platform_name = NULL;
    }

    // Create null base platform if one doesn't already exist
    if (plat == NULL) {
        plat = (mraa_board_t*) calloc(1, sizeof(mraa_board_t));
        if (plat != NULL) {
            plat->platform_type = MRAA_NULL_PLATFORM;
            plat->platform_name = "Unknown platform";
        }
    }

#if defined(USBPLAT)
    // Now detect sub platform, note this is not an else since we could be in
    // an error case and fall through to MRAA_ERROR_PLATFORM_NOT_INITIALISED
    if (plat != NULL) {
        mraa_platform_t usb_platform_type = mraa_usb_platform_extender(plat);
        // if we have no known platform just replace usb platform with platform
        if (plat->platform_type == MRAA_UNKNOWN_PLATFORM && usb_platform_type != MRAA_UNKNOWN_PLATFORM) {
            plat->platform_type = usb_platform_type;
        }
    }
    if (plat == NULL) {
        printf("mraa: FATAL error, failed to initialise platform\n");
        return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
    }
#endif

#if defined(IMRAA)
    const char* subplatform_lockfile = "/tmp/imraa.lock";
    mraa_add_from_lockfile(subplatform_lockfile);
#endif

    // Look for IIO devices
    mraa_iio_detect();

    if (plat != NULL) {
        int length = strlen(plat->platform_name) + 1;
        if (mraa_has_sub_platform()) {
            // Account for ' + ' chars
            length += strlen(plat->sub_platform->platform_name) + 3;
        }
        platform_name = calloc(length, sizeof(char));
        if (mraa_has_sub_platform()) {
            snprintf(platform_name, length, "%s + %s", plat->platform_name, plat->sub_platform->platform_name);
        } else {
            strncpy(platform_name, plat->platform_name, length);
        }
    }

    lang_func = (mraa_lang_func_t*) calloc(1, sizeof(mraa_lang_func_t));
    if (lang_func == NULL) {
        return MRAA_ERROR_NO_RESOURCES;
    }

    syslog(LOG_NOTICE, "libmraa initialised for platform '%s' of type %d", mraa_get_platform_name(), mraa_get_platform_type());
    return MRAA_SUCCESS;
}