Example #1
0
static int config_set(int id, GVariant *data, struct sr_dev_inst *sdi,
                      struct sr_channel *ch,
                      const struct sr_channel_group *cg)
{
    uint16_t i, j;
    int ret;
	const char *stropt;
    struct sr_channel *probe;
    uint64_t tmp_u64;

    (void) cg;

	struct dev_context *const devc = sdi->priv;

	if (sdi->status != SR_ST_ACTIVE)
		return SR_ERR_DEV_CLOSED;

	if (id == SR_CONF_SAMPLERATE) {
		devc->cur_samplerate = g_variant_get_uint64(data);
        devc->samples_counter = 0;
        devc->pre_index = 0;
		sr_dbg("%s: setting samplerate to %" PRIu64, __func__,
		       devc->cur_samplerate);
		ret = SR_OK;
	} else if (id == SR_CONF_LIMIT_SAMPLES) {
        devc->limit_msec = 0;
        devc->limit_samples = g_variant_get_uint64(data);
        devc->limit_samples_show = devc->limit_samples;
        if (sdi->mode == DSO && en_ch_num(sdi) == 1) {
            devc->limit_samples /= 2;
        }
		sr_dbg("%s: setting limit_samples to %" PRIu64, __func__,
		       devc->limit_samples);
		ret = SR_OK;
	} else if (id == SR_CONF_LIMIT_MSEC) {
		devc->limit_msec = g_variant_get_uint64(data);
		devc->limit_samples = 0;
        devc->limit_samples_show = devc->limit_samples;
		sr_dbg("%s: setting limit_msec to %" PRIu64, __func__,
		       devc->limit_msec);
        ret = SR_OK;
    } else if (id == SR_CONF_DEVICE_MODE) {
        sdi->mode = g_variant_get_int16(data);
        ret = SR_OK;
        if (sdi->mode == LOGIC) {
            sr_dev_probes_free(sdi);
            for (i = 0; probe_names[i]; i++) {
                if (!(probe = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE,
                        probe_names[i])))
                    ret = SR_ERR;
                else
                    sdi->channels = g_slist_append(sdi->channels, probe);
            }
            devc->cur_samplerate = SR_MHZ(1);
            devc->limit_samples = SR_MB(1);
            devc->limit_samples_show = devc->limit_samples;
        } else if (sdi->mode == DSO) {
            sr_dev_probes_free(sdi);
            for (i = 0; i < DEMO_MAX_DSO_PROBES_NUM; i++) {
                if (!(probe = sr_channel_new(i, SR_CHANNEL_DSO, TRUE,
                        probe_names[i])))
                    ret = SR_ERR;
                else {
                    probe->vdiv = 1000;
                    probe->vfactor = 1;
                    probe->coupling = SR_AC_COUPLING;
                    probe->trig_value = 0x80;
                    probe->vpos = (probe->index == 0 ? 0.5 : -0.5)*probe->vdiv;
                    sdi->channels = g_slist_append(sdi->channels, probe);
                    probe->ms_show = TRUE;
                    for (j = DSO_MS_BEGIN; j < DSO_MS_END; j++)
                        probe->ms_en[j] = default_ms_en[j];
                }
            }
            devc->cur_samplerate = DEMO_MAX_DSO_SAMPLERATE / DEMO_MAX_DSO_PROBES_NUM;
            devc->limit_samples = DEMO_MAX_DSO_DEPTH / DEMO_MAX_DSO_PROBES_NUM;
            devc->limit_samples_show = devc->limit_samples;
        } else if (sdi->mode == ANALOG) {
            sr_dev_probes_free(sdi);
            for (i = 0; i < DS_MAX_ANALOG_PROBES_NUM; i++) {
                if (!(probe = sr_channel_new(i, SR_CHANNEL_ANALOG, TRUE,
                        probe_names[i])))
                    ret = SR_ERR;
                else
                    sdi->channels = g_slist_append(sdi->channels, probe);
            }
            devc->cur_samplerate = SR_HZ(100);
            devc->limit_samples = SR_KB(1);
            devc->limit_samples_show = devc->limit_samples;
        } else {
            ret = SR_ERR;
        }
        sr_dbg("%s: setting mode to %d", __func__, sdi->mode);
    }else if (id == SR_CONF_PATTERN_MODE) {
        stropt = g_variant_get_string(data, NULL);
        ret = SR_OK;
        if (!strcmp(stropt, pattern_strings[PATTERN_SINE])) {
            devc->sample_generator = PATTERN_SINE;
        } else if (!strcmp(stropt, pattern_strings[PATTERN_SQUARE])) {
            devc->sample_generator = PATTERN_SQUARE;
        } else if (!strcmp(stropt, pattern_strings[PATTERN_TRIANGLE])) {
            devc->sample_generator = PATTERN_TRIANGLE;
        } else if (!strcmp(stropt, pattern_strings[PATTERN_SAWTOOTH])) {
            devc->sample_generator = PATTERN_SAWTOOTH;
        } else if (!strcmp(stropt, pattern_strings[PATTERN_RANDOM])) {
            devc->sample_generator = PATTERN_RANDOM;
		} else {
            ret = SR_ERR;
		}
        sr_dbg("%s: setting pattern to %d",
			__func__, devc->sample_generator);
    } else if (id == SR_CONF_MAX_HEIGHT) {
        stropt = g_variant_get_string(data, NULL);
        ret = SR_OK;
        for (i = 0; i < ARRAY_SIZE(maxHeights); i++) {
            if (!strcmp(stropt, maxHeights[i])) {
                devc->max_height = i;
                break;
            }
        }
        sr_dbg("%s: setting Signal Max Height to %d",
            __func__, devc->max_height);
    } else if (id == SR_CONF_INSTANT) {
        devc->instant = g_variant_get_boolean(data);
        sr_dbg("%s: setting INSTANT mode to %d", __func__,
               devc->instant);
        ret = SR_OK;
    } else if (id == SR_CONF_HORIZ_TRIGGERPOS) {
        ret = SR_OK;
    } else if (id == SR_CONF_TRIGGER_HOLDOFF) {
        ret = SR_OK;
    } else if (id == SR_CONF_TRIGGER_MARGIN) {
        ret = SR_OK;
    } else if (id == SR_CONF_EN_CH) {
        ch->enabled = g_variant_get_boolean(data);
        sr_dbg("%s: setting ENABLE of channel %d to %d", __func__,
               ch->index, ch->enabled);
        ret = SR_OK;
    } else if (id == SR_CONF_DATALOCK) {
        devc->data_lock = g_variant_get_boolean(data);
        sr_dbg("%s: setting data lock to %d", __func__,
               devc->data_lock);
        ret = SR_OK;
    } else if (id == SR_CONF_VDIV) {
        tmp_u64 = g_variant_get_uint64(data);
        ch->vpos = (tmp_u64 * 1.0 / ch->vdiv) * ch->vpos;
        ch->vdiv = tmp_u64;
        sr_dbg("%s: setting VDIV of channel %d to %" PRIu64, __func__,
               ch->index, ch->vdiv);
        ret = SR_OK;
    } else if (id == SR_CONF_FACTOR) {
        ch->vfactor = g_variant_get_uint64(data);
        sr_dbg("%s: setting FACTOR of channel %d to %" PRIu64, __func__,
               ch->index, ch->vfactor);
        ret = SR_OK;
    } else if (id == SR_CONF_VPOS) {
        //ch->vpos = g_variant_get_double(data);
        sr_dbg("%s: setting VPOS of channel %d to %lf", __func__,
               ch->index, ch->vpos);
        ret = SR_OK;
    } else if (id == SR_CONF_TIMEBASE) {
        devc->timebase = g_variant_get_uint64(data);
        sr_dbg("%s: setting TIMEBASE to %" PRIu64, __func__,
               devc->timebase);
        ret = SR_OK;
    } else if (id == SR_CONF_COUPLING) {
        ch->coupling = g_variant_get_byte(data);
        sr_dbg("%s: setting AC COUPLING of channel %d to %d", __func__,
               ch->index, ch->coupling);
        ret = SR_OK;
    } else if (id == SR_CONF_TRIGGER_SOURCE) {
        devc->trigger_source = g_variant_get_byte(data);
        sr_dbg("%s: setting Trigger Source to %d",
            __func__, devc->trigger_source);
        ret = SR_OK;
    } else if (id == SR_CONF_TRIGGER_SLOPE) {
        devc->trigger_slope = g_variant_get_byte(data);
        sr_dbg("%s: setting Trigger Slope to %d",
            __func__, devc->trigger_slope);
        ret = SR_OK;
    } else if (id == SR_CONF_TRIGGER_VALUE) {
        ch->trig_value = g_variant_get_byte(data);
        sr_dbg("%s: setting channel %d Trigger Value to %d",
            __func__, ch->index, ch->trig_value);
        ret = SR_OK;
    } else {
        ret = SR_ERR_NA;
	}

	return ret;
}
Example #2
0
static void samples_generator(uint16_t *buf, uint64_t size,
                              const struct sr_dev_inst *sdi,
                              struct dev_context *devc)
{
    uint64_t i, pre0_i, pre1_i;
    GSList *l;
    struct sr_channel *probe;
    int offset;
    unsigned int start_rand;
    const uint64_t span = DEMO_MAX_DSO_SAMPLERATE / devc->cur_samplerate;
    const uint64_t len = ARRAY_SIZE(sinx) - 1;
    const int *pre_buf;
    uint16_t tmp_u16 = 0;
    unsigned int ch_num = en_ch_num(sdi) ? en_ch_num(sdi) : 1;

    switch (devc->sample_generator) {
    case PATTERN_SINE: /* Sine */
        pre_buf = sinx;
        break;
    case PATTERN_SQUARE:
        pre_buf = sqrx;
        break;
    case PATTERN_TRIANGLE:
        pre_buf = trix;
        break;
    case PATTERN_SAWTOOTH:
        pre_buf = sawx;
        break;
    case PATTERN_RANDOM:
        pre_buf = ranx;
        break;
    default:
        pre_buf = sinx;
        break;
    }

    if (devc->samples_counter == devc->limit_samples &&
        size != devc->limit_samples) {
        for (i = 0; i < devc->limit_samples; i++)
            *(buf + i) = *(buf + ((i + size)%devc->limit_samples));
    } else if (sdi->mode == LOGIC) {
        for (i = 0; i < size; i++) {
            //index = (i/10/g_slist_length(sdi->channels)+start_rand)%len;
            //*(buf + i) = (uint16_t)(((const_dc+pre_buf[index]) << 8) + (const_dc+pre_buf[index]));
            tmp_u16 = 0;
            if (i < ch_num*4)
                *(buf + i) = tmp_u16;
            else if (i % 4 == 0) {
                start_rand = rand() % (ch_num * 4);
                if (start_rand == (i/4 % ch_num))
                    tmp_u16 = 0xffff;
                *(buf + i) = tmp_u16 ? ~*(buf + i - ch_num*4) : *(buf + i - ch_num*4);
            } else {
                *(buf + i) = *(buf + i - 1);
            }
        }
    } else if (sdi->mode == ANALOG) {
        for (i = 0; i < size; i++) {
            if (rand() % (devc->limit_samples / 100) == 0)
                *(buf + i) = 0x4000 + rand() % 0x8000;
            else if (rand() % (devc->limit_samples / 1000) == 0)
                *(buf + i) = 0x7000 + rand() % 0x2000;
            else
                *(buf + i) = 0x8000;
        }
    } else {
        if (devc->pre_index == 0) {
            devc->mstatus.ch0_max = 0;
            devc->mstatus.ch0_min = 255;
            devc->mstatus.ch1_max = 0;
            devc->mstatus.ch1_min = 255;
            devc->mstatus.ch0_period = 0;
            devc->mstatus.ch0_pcnt = 1;
            devc->mstatus.ch1_period = 0;
            devc->mstatus.ch1_pcnt = 1;
        }
        memset(buf+devc->pre_index, 0, size*sizeof(uint16_t));
        for (l = sdi->channels; l; l = l->next) {
            start_rand = devc->pre_index == 0 ? rand()%len : 0;
            probe = (struct sr_channel *)l->data;
            offset = ceil((0.5 - (probe->vpos/probe->vdiv/10.0)) * 255);
            //offset = 128;
            pre0_i = devc->pre_index;
            pre1_i = devc->pre_index;
            for (i = devc->pre_index; i < devc->pre_index + size; i++) {
                if (probe->coupling == SR_DC_COUPLING) {
                    *(buf + i) += (uint8_t)(offset + (1000.0/probe->vdiv) * (pre_buf[(i*span+start_rand)%len] - const_dc)) << (probe->index * 8);
                } else if (probe->coupling == SR_AC_COUPLING) {
                    *(buf + i) += (uint8_t)(offset + (1000.0/probe->vdiv) * pre_buf[(i*span+start_rand)%len]) << (probe->index * 8);
                } else {
                    *(buf + i) += offset << (probe->index * 8);
                }

                if (probe->index == 0) {
                    devc->mstatus.ch0_max = MAX(devc->mstatus.ch0_max, (*(buf + i) & 0x00ff));
                    devc->mstatus.ch0_min = MIN(devc->mstatus.ch0_min, (*(buf + i) & 0x00ff));
                    if (i > devc->pre_index &&
                        pre_buf[(i*span+start_rand)%len] < 0 &&
                        pre_buf[((i-1)*span+start_rand)%len] > 0) {
                        devc->mstatus.ch0_period = 2*(i - pre0_i)*pow(10, 8)/DEMO_MAX_DSO_SAMPLERATE;
                        pre0_i = i;
                    }
                } else {
                    devc->mstatus.ch1_max = MAX(devc->mstatus.ch1_max, ((*(buf + i) & 0xff00) >> 8));
                    devc->mstatus.ch1_min = MIN(devc->mstatus.ch1_min, ((*(buf + i) & 0xff00) >> 8));
                    if (i > devc->pre_index &&
                        pre_buf[(i*span+start_rand)%len] < 0 &&
                        pre_buf[((i-1)*span+start_rand)%len] > 0) {
                        devc->mstatus.ch1_period = 2*(i - pre1_i)*pow(10, 8)/DEMO_MAX_DSO_SAMPLERATE;
                        pre1_i = i;
                    }
                }
            }
        }

        for (l = sdi->channels; l; l = l->next) {
            probe = (struct sr_channel *)l->data;
            if (!probe->enabled) {
                devc->mstatus.ch1_max = MAX(devc->mstatus.ch0_max, devc->mstatus.ch1_max);
                devc->mstatus.ch1_min = MIN(devc->mstatus.ch0_min, devc->mstatus.ch1_min);
                devc->mstatus.ch0_max = MAX(devc->mstatus.ch0_max, devc->mstatus.ch1_max);
                devc->mstatus.ch0_min = MIN(devc->mstatus.ch0_min, devc->mstatus.ch1_min);
                break;
            }
        }
    }
}