Difference between revisions of "Serial Open"

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(Created page with '{{subst:syscall|Serial_Open|0x1BB7|int Serial_Open(unsigned char *mode)}}')
 
 
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{{DISPLAYTITLE:Serial_Open}}
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{{syscall
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== Synopsis ==
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| name = Serial_Open
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'''Syscall index: 0x1BB7'''
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| header = fxcg/serial.h
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| index = 0x1BB7
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'''Function signature:''' int Serial_Open(unsigned char *mode)
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| signature = int Serial_Open(unsigned char* mode)
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| synopsis = Opens the 3-pin serial port with the specified parameters.
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=== Inputs ===
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| parameters = * '''mode''' - pointer to a six-byte array containing the settings for the serial port:
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{{{!}}
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! Index
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=== Outputs ===
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! Description
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! Values
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{{!}}-
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== Comments ==
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{{!}} 0 {{!}}{{!}} Unknown {{!}}{{!}} Always 0
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{{!}}-
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{{!}} 1 {{!}}{{!}} Bit rate {{!}}{{!}}
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{{{!}}
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! Value
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! Rate
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{{!}}-
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{{!}} 0 {{!}}{{!}} 300
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{{!}}-
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{{!}} 1 {{!}}{{!}} 600
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{{!}}-
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{{!}} 2 {{!}}{{!}} 1200
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{{!}}-
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{{!}} 3 {{!}}{{!}} 2400
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{{!}}-
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{{!}} 4 {{!}}{{!}} 4800
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{{!}}-
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{{!}} 5 {{!}}{{!}} 9600
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{{!}}-
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{{!}} 6 {{!}}{{!}} 19200
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{{!}}-
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{{!}} 7 {{!}}{{!}} 38400
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{{!}}-
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{{!}} 8 {{!}}{{!}} 57600
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{{!}}-
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{{!}} 9 {{!}}{{!}} 115200
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{{!}}}
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{{!}}-
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{{!}} 2 {{!}}{{!}} Parity {{!}}{{!}}
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{{{!}}
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! Value
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! Parity
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{{!}}-
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{{!}} 0 {{!}}{{!}} None
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{{!}}-
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{{!}} 1 {{!}}{{!}} Odd
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{{!}}-
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{{!}} 2 {{!}}{{!}} Even
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{{!}}}
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{{!}}-
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{{!}} 3 {{!}}{{!}} Data length {{!}}{{!}}
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{{{!}}
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! Value
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! Length (bits)
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{{!}}-
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{{!}} 0 {{!}}{{!}} 8
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{{!}}-
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{{!}} 1 {{!}}{{!}} 7
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{{!}}}
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{{!}}-
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{{!}} 4 {{!}}{{!}} Stop bits {{!}}{{!}}
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{{{!}}
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! Value
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! Stop bits
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{{!}}-
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{{!}} 0 {{!}}{{!}} 1
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{{!}}-
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{{!}} 1 {{!}}{{!}} 2
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{{!}}}
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{{!}}-
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{{!}} 5 {{!}}{{!}} Unused {{!}}{{!}} Always 0
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{{!}}}
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| returns = * 0 if successful;
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* 3 if the serial port is already open;
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* 4 if '''mode'''[0] is not zero.
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| example = Check if the serial port is already open, and configure it for 9600 bps 8N1 operation if not.
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if (Serial_IsOpen() != 1) {
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    unsigned char mode[6] = {0, 5, 0, 0, 0, 0};    // 9600 bps 8n1
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    Serial_Open(mode);
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}
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}}
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[[Category:Syscalls:Serial]]

Latest revision as of 06:20, 1 August 2014


Synopsis

Header: fxcg/serial.h
Syscall index: 0x1BB7
Function signature: int Serial_Open(unsigned char* mode)

Opens the 3-pin serial port with the specified parameters.

Parameters

  • mode - pointer to a six-byte array containing the settings for the serial port:
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


Returns

  • 0 if successful;
  • 3 if the serial port is already open;
  • 4 if mode[0] is not zero.

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);
}
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