SystemBase Eddy DK, Руководство программиста

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Eddy DK Programmer Guide
102
6.5 Serial functions
These functions are used to handle internal serial port and UART.
SB_OpenSerial
Function Opens serial port.
Format int SB_OpenSerial (int Port_No);
Parameter Port_No
Serial port number
0: First serial port
1: Second serial port
(Only available for Eddy-CPU, Eddy-DK)
Returns -1 ~ N Opened serial port handle
-1: Open error
N: Opened serial port handle
Notice Eddy provides maximum two serial ports; however for normal model
where Eddy-CPU is mounted, Eddy only provides one serial port.
DK board has two on-board serial ports. User can use both of the serial
ports if the user sets DIP switch on DK board to make it recognized as
Eddy-CPU or Eddy-DK.
SB_InitSerial
Function Initialize data communication configuration of serial port.
Format Void SB_InitSerial (int Handle, char Speed, char LCR, char Flow);
Parameter Handle Serial port handle acquired from OpenSerial
Baud rate
Speed
0 : 150 BPS,
2 : 600 BPS
4 : 2400 BPS
6 : 9600 BPS
8 : 38400 BPS
10 : 115200 BPS
12 : 460800 BPS 1 : 300 BPS
3 : 1200 BPS:
5 : 4800 BPS
7 : 19200 BPS
9 : 57600 BPS
11 : 230400 BPS
13 : 921600 BPS