reply[0] = '\0';
gpd_receive_reply(serial, reply, sizeof(reply));
if (sscanf(reply, "%f", &devc->config[i].output_voltage_max) != 1) {
reply[0] = '\0';
gpd_receive_reply(serial, reply, sizeof(reply));
if (sscanf(reply, "%f", &devc->config[i].output_voltage_max) != 1) {