20-101-0356 Rabbit Semiconductor, 20-101-0356 Datasheet - Page 51

• Manufacturer Part Number: 20-101-0356
• Description: COMPUTER SINGLE-BOARD BL1800
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-0356

• Module/board Type: Single Board Computer Module
• Product: Modules
• Data Bus Width: 8 bit
• Processor Type: Rabbit 2000
• Sram: 128 KB
• Flash: 256 KB
• Timers: 8 bit, 10 bit
• Number Of I/os: 14
• Backup Battery: 3 V Lithium Coin Type
• Operating Voltage: 8 V to 40 V
• Power Consumption: 1.2 W
• Board Size: 89 mm x 64 mm x 19 mm
• Description/function: Computer Module
• For Use With/related Products: BL1800
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 316-1079

4.2.4 RS-485 Serial Communication Sample Program
The following sample program illustrates the use of the RS-485 serial drivers. The sample
program shows a byte being transmitted, and then the RS-485 transceiver waits for a reply.
User’s Manual
#define DINBUFSIZE
#define DOUTBUFSIZE 15
void main( void ){
}
NOTE: If your version of Dynamic C is earlier than 6.55, see Technical Note 117, Jack-
int nEcho,nReply;
char cChar;
Jr485Init ();// Init RS485 Control (PD5)
serDopen ( 9600 );// Open Serial Port D
for (;;) {// Forever
}
rabbit (BL1800 Series) RS-485 Bulletin, for information on restrictions on using both
DA1 and RS-485 at the same time.
for (cChar='a';cChar<='z';++cChar){
}
Jr485Tx ();// Enable RS485 Transmitter
serDputc ( cChar );// Send Byte
while ((nEcho = serDgetc ()) == -1);
Jr485Rx ();// Disable RS485 Transmitter
while ((nReply = serDgetc ()) == -1);
printf ( "%02x -> %02x\n",nEcho,nReply );
15
// Wait for Echo
// Wait for Reply
// Send Alphabet
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