sdi->inst_type = SR_INST_SERIAL;
sdi->conn = serial;
for (i = 0; i < MAX_CHANNELS; i++) {
snprintf(channel, 10, "CH%d", i + 1);
ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel);
sdi->inst_type = SR_INST_SERIAL;
sdi->conn = serial;
for (i = 0; i < MAX_CHANNELS; i++) {
snprintf(channel, 10, "CH%d", i + 1);
ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel);