+ uint16_t readcount, delaycount;
+ uint8_t changrp_mask;
+ int i;
+
+ if (!(sdi = sr_get_device_instance(device_instances, device_index)))
+ return SR_ERR;
+
+ ols = sdi->priv;
+
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR;
+
+ readcount = ols->limit_samples / 4;
+
+ memset(trigger_config, 0, 16);
+ trigger_config[ols->num_stages - 1] |= 0x08;
+ if (ols->trigger_mask[0]) {
+ delaycount = readcount * (1 - ols->capture_ratio / 100.0);
+ ols->trigger_at = (readcount - delaycount) * 4 - ols->num_stages;
+
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_0,
+ reverse32(ols->trigger_mask[0])) != SR_OK)
+ return SR_ERR;
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_0,
+ reverse32(ols->trigger_value[0])) != SR_OK)
+ return SR_ERR;
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0,
+ trigger_config[0]) != SR_OK)
+ return SR_ERR;
+
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_1,
+ reverse32(ols->trigger_mask[1])) != SR_OK)
+ return SR_ERR;
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_1,
+ reverse32(ols->trigger_value[1])) != SR_OK)
+ return SR_ERR;
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_1,
+ trigger_config[1]) != SR_OK)
+ return SR_ERR;
+
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_2,
+ reverse32(ols->trigger_mask[2])) != SR_OK)
+ return SR_ERR;
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_2,
+ reverse32(ols->trigger_value[2])) != SR_OK)
+ return SR_ERR;
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_2,
+ trigger_config[2]) != SR_OK)
+ return SR_ERR;
+
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_3,
+ reverse32(ols->trigger_mask[3])) != SR_OK)
+ return SR_ERR;
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_3,
+ reverse32(ols->trigger_value[3])) != SR_OK)
+ return SR_ERR;
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_3,
+ trigger_config[3]) != SR_OK)
+ return SR_ERR;
+ } else {
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_0,
+ ols->trigger_mask[0]) != SR_OK)
+ return SR_ERR;
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_0,
+ ols->trigger_value[0]) != SR_OK)
+ return SR_ERR;
+ if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0,
+ 0x00000008) != SR_OK)
+ return SR_ERR;
+ delaycount = readcount;
+ }
+
+ sr_info("ols: setting samplerate to %" PRIu64 " Hz (divider %u, "
+ "demux %s)", ols->cur_samplerate, ols->cur_samplerate_divider,
+ ols->flag_reg & FLAG_DEMUX ? "on" : "off");
+ if (send_longcommand(sdi->serial->fd, CMD_SET_DIVIDER,
+ reverse32(ols->cur_samplerate_divider)) != SR_OK)
+ return SR_ERR;
+
+ /* Send sample limit and pre/post-trigger capture ratio. */
+ data = ((readcount - 1) & 0xffff) << 16;
+ data |= (delaycount - 1) & 0xffff;
+ if (send_longcommand(sdi->serial->fd, CMD_CAPTURE_SIZE, reverse16(data)) != SR_OK)
+ return SR_ERR;
+
+ /*
+ * Enable/disable channel groups in the flag register according to the
+ * probe mask.
+ */
+ changrp_mask = 0;
+ for (i = 0; i < 4; i++) {
+ if (ols->probe_mask & (0xff << (i * 8)))
+ changrp_mask |= (1 << i);
+ }