101-1102 Rabbit Semiconductor, 101-1102 Datasheet - Page 98
![no-image](/images/no-image-200.jpg)
101-1102
Manufacturer Part Number
101-1102
Description
KIT DEV RABBIT RCM4100 INTL
Manufacturer
Rabbit Semiconductor
Series
RabbitCore 4000r
Type
MPU Moduler
Datasheet
1.20-101-1093.pdf
(112 pages)
Specifications of 101-1102
Contents
RabbitCore Module, Dev. Board, Cable and Dynamic C® CD-Rom
For Use With/related Products
RCM4100
Lead Free Status / RoHS Status
Vendor undefined / Vendor undefined
- Current page: 98 of 112
- Download datasheet (2Mb)
B.4.4.1 RS-232
RS-232 serial communication on header J4 on both Prototyping Boards is supported by an
RS-232 transceiver installed at U3. This transceiver provides the voltage output, slew rate,
and input voltage immunity required to meet the RS-232 serial communication protocol.
Basically, the chip translates the Rabbit 4000’s signals to RS-232 signal levels. Note that
the polarity is reversed in an RS-232 circuit so that a +3.3 V output becomes approxi-
mately -10 V and 0 V is output as +10 V. The RS-232 transceiver also provides the proper
line loading for reliable communication.
RS-232 can be used effectively at the maximum baud rate for distances of up to 15 m.
RS-232 flow control on an RS-232 port is initiated in software using the
trolOn
of the flow control lines are specified using a set of five macros.
Standard 3-wire RS-232 communication using Serial Ports C and D is illustrated in the
following sample code.
94
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.
#define CINBUFSIZE
#define COUTBUFSIZE 15
#define DINBUFSIZE
#define DOUTBUFSIZE 15
#define MYBAUD 115200
#endif
main(){
}
function call from
serCopen(_MYBAUD);
serDopen(_MYBAUD);
serCwrFlush();
serCrdFlush();
serDwrFlush();
serDrdFlush();
serCclose(_MYBAUD);
serDclose(_MYBAUD);
RS232.LIB
15
15
// set baud rate
// set size of circular buffers in bytes
// open Serial Ports C and D
// flush their input and transmit buffers
// close Serial Ports C and D
, where
X
is the serial port (C or D). The locations
RabbitCore RCM4100
serXflowcon-
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