Difference between revisions of "Serial Open"

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     Serial_Open(mode);
 
     Serial_Open(mode);
 
  }
 
  }
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[[Category:Syscalls|Serial_Open]]

Revision as of 11:42, 14 May 2012

Synopsis

Syscall index: 0x1BB7

Function signature: int Serial_Open(unsigned char *mode)

Inputs

mode: a 6-byte array specifying the desired communication parameters. Summarized in the table below.

Index Description Values
0 Unknown Always 0
1 Bit rate
Value Rate
0 300
1 600
2 1200
3 2400
4 4800
5 9600
6 19200
7 38400
8 57600
9 115200
2 Parity
Value Parity
0 None
1 Odd
2 Even
3 Data length
Value Length (bits)
0 8
1 7
4 Stop bits
Value Stop bits
0 1
1 2
5 Unused Always 0


Outputs

Returns 0 for success, 3 if the serial port is already open, and 4 if the byte at index 0 was not 0.

Example

Check if the serial port is already open, and configure it for 9600 bps 8n1 operation if not.

if (Serial_IsOpen() != 1) {
    unsigned char mode[6] = {0, 5, 0, 0, 0, 0};    // 9600 bps 8n1
    Serial_Open(mode);
}