101-1102 Rabbit Semiconductor, 101-1102 Datasheet - Page 49
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
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5.2 Dynamic C Function Calls
5.2.1 Digital I/O
The RCM4100 series of modules was designed to interface with other systems, and so
there are no drivers written specifically for the I/O. The general Dynamic C read and write
functions allow you to customize the parallel I/O to meet your specific needs. For exam-
ple, use
to set all the Port E bits as inputs, or use
to set all the Port E bits as outputs.
When using the auxiliary I/O bus on the Rabbit 4000 chip, add the line
to the beginning of any programs using the auxiliary I/O bus.
The sample programs in the Dynamic C
examples.
5.2.2 Serial Communication Drivers
Library files included with Dynamic C provide a full range of serial communications sup-
port. The
PACKET.LIB
by the 9th bit, by transmission gaps, or with user-defined special characters. Both libraries
provide blocking functions, which do not return until they are finished transmitting or
receiving, and nonblocking functions, which must be called repeatedly until they are fin-
ished, allowing other functions to be performed between calls. For more information, see
the Dynamic C Function Reference Manual and Technical Note TN213, Rabbit Serial
Port Software.
5.2.3 SRAM Use
The RCM4100 series of modules has a battery-backed data SRAM and a program-execu-
tion SRAM. Dynamic C provides the
be placed into the battery-backed SRAM. The compiler generates code that maintains two
copies of each protected variable in the battery-backed SRAM. The compiler also generates
a flag to indicate which copy of the protected variable is valid at the current time. This flag
is also stored in the battery-backed SRAM. When a protected variable is updated, the
“inactive” copy is modified, and is made “active” only when the update is 100% complete.
This assures the integrity of the data in case a reset or a power failure occurs during the
update process. At power-on the application program uses the active copy of the variable
pointed to by its associated flag.
User’s Manual
WrPortI(PEDDR, &PEDDRShadow, 0x00);
WrPortI(PEDDR, &PEDDRShadow, 0xFF);
#define PORTA_AUX_IO
RS232.LIB
library provides packet-based serial functions where packets can be delimited
library provides a set of circular-buffer-based serial functions. The
// required to enable auxiliary I/O bus
protected
SAMPLES/RCM4100
keyword to identify variables that are to
folder provide further
45
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