參數(shù)資料
型號： 20-101-1028
廠商： Rabbit Semiconductor
文件頁數(shù)： 28/172頁
文件大小： 0K
描述： MODULE RABBITCORE RCM3750
標(biāo)準(zhǔn)包裝： 1
系列： RabbitCore®
模塊/板類型： MPU 核心模塊
適用于相關(guān)產(chǎn)品： RCM3750
產(chǎn)品目錄頁面： 619 (CN2011-ZH PDF)
其它名稱： 316-1110
User’s Manual
117
R
C
M
3
7
2
0
RS-232 can be used effectively at the RabbitCore module’s maximum baud rate for dis-
tances of up to 15 m.
When stuffed, the RS-232 chip brings out Serial Ports C and D to the header J3 area on the
RCM3720 Prototyping Board. An optional 2 × 5 header strip with a 0.1" pitch can be
installed at J3 to allow you to connect a ribbon cable that leads to a standard DB-9 serial
connector. The 2 × 5 header (Part No. 405-0023) can be purchased through our online
store, and is included with the subassembly (Part No. 151-0082) described above.
Table B-9 summarizes the serial port locations.
These serial ports can be configured in software as either one 5-wire or two 3-wire RS-232
channels. RS-232 flow control on an RS-232 port is initiated in software using the serX-
flowcontrolOn
function call from RS232.LIB, where X is the serial port (C or D). The
locations of the flow control lines are specified using a set of five macros.
SERX_RTS_PORT
—Data register for the parallel port that the RTS line is on (e.g., PCDR).
SERA_RTS_SHADOW
—Shadow register for the RTS line's parallel port (e.g., PCDRShadow).
SERA_RTS_BIT
—The bit number for the RTS line.
SERA_CTS_PORT
—Data register for the parallel port that the CTS line is on (e.g., PCDRShadow).
SERA_CTS_BIT
—The bit number for the CTS line.
Standard 3-wire RS-232 communication using Serial Ports C and D is illustrated in the
following sample code.
#define CINBUFSIZE
15
// set size of circular buffers in bytes
#define COUTBUFSIZE 15
#define DINBUFSIZE
15
#define DOUTBUFSIZE 15
#define MYBAUD 115200
// set baud rate
#endif
main(){
serCopen(_MYBAUD);
// open Serial Ports C and D
serDopen(_MYBAUD);
serCwrFlush();
// flush their input and transmit buffers
serCrdFlush();
serDwrFlush();
serDrdFlush();
serCclose(_MYBAUD);
// close Serial Ports C and D
serDclose(_MYBAUD);
}
Table B-9. RCM3720 Prototyping Board Serial Port Locations
Serial Port
Signal Header
Header Pins
CJ3
TxC…6
RxC…4
DJ3
TxD…3
RxD…5
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