úÎ)'¨      The blocking Š function takes one additional argument, the timeout (since it cannot continue executing commands in parallel while one command freezes). timeout (in ms) yWrapping commands is identical to the non-blocking version except that there is no predicate to recognize return values. (The end of line character for this port The command to send The serial port to access % takes produces a structure around a  to D | handle multiple callers to the serial port. The return value is B | the channel to which all commands will flow. Users should use  | the , function to access it instead of trying to  | access its details directly. All the commands to operate a  should be  specializations of  , created by applying it to the E first three arguments, then using that thereafter as the command to  the serial port. AFor example, the Olympus IX-81 requires a login command from the  user (2LOG IN) followed by rn as an end of line. The  response will be 2LOG + followed by r. So a login command  would look like   p = do string "2LOG +\r"  return True  , login mgr = wrapCommand "\r\n" "2LOG IN" p  uses parsers that return  so users can choose D whether or not to match any given command based upon its contents, B rather than just blindly saying whether it matches or not. This $ may change to simple predicates of String -> Bool in future. (The end of line character for this port The command to send /The predicate to recognize the returning value The serial port to access The response from the port  Serial8 lets the user set the number of stop bits, the parity, > flow control (there is no hardware flow control, since it isn't  supported in the System.Posix.IO library), number of bits per < byte, and the baud rate. The baud rate is declared by the   in System.Posix.Terminal. ,  , and   are defined here. 5 opens the serial port and sets the options the user C passes, makes its buffering line oriented, and returns the handle C to control it. For example, an Olympus IX-81 microscope attached 8 to the first serial port on Linux would be opened with 4 openSerial "/dev/ttyS0" B19200 8 One Even Software )The filename of the serial port, such as devttyS0 )The number of bits per word, typically 8 Almost always One unless you're talking to a printer               !"#$ serial-0.2System.Serial.BlockingManagerSystem.Serial.Manager System.SerialBlockingSerialManagerBlockingSerialCommand serialManager wrapCommand SerialManager SerialCommand FlowControl NoFlowControlSoftwareParityNoParityOddEvenStopBitsTwoOne openSerialbaseGHC.IO.Handle.TypesHandleprocess portWatcherghc-primGHC.BoolBool unix-2.4.0.2System.Posix.TerminalBaudRate withParitywithFlowControl withStopBitsconfigureSettings