write_parms.lock_timeout = VXI_DEFAULT_TIMEOUT_MS;
write_parms.flags = DF_END;
write_parms.data.data_len = MIN(len, vxi->max_send_size);
- write_parms.data.data_val = command;
+ write_parms.data.data_val = (char *)command;
if (!(write_resp = device_write_1(&write_parms, vxi->client))
|| write_resp->error) {