... Prev . Next . comedi_command -- start streaming input/output . ... int comedi_command (comedi_t * device, comedi_cmd * command); . The function comedi_command() starts streaming input or output. The command structure pointed to by the parameter command specifies the acquisition. For input subdevices, sample values are read using the function read(). For output subdevices, sample vlaues are written using the function write(). ... comedi_command_test ...