HOLT HI-3110 User Manual page 7

SW2 OPT2 switch
OPT2 is also used in the receiver mode. It enables the FILTON bit(bit4) in the CTRL1 register for CAN ID
filtering. See the Receive Mode description in the software description section for more details.
Buttons1 – Button4 (SW1-SW4)
Depending on the mode these buttons will perform specific tasks.
Serial Port Configuration
The serial port is optional and provides access to additional status and data information:
Software Revision
Current Mode
CAN Frame data
CAN History FIFO data
Status Registers data
Sleep Mode status
Serial Commands Menu
A simple menu of commands is provided for resetting the HI-3110, reading and displaying the HI-3110
status registers, and a demo how to pass input strings to the program. There are provisions for
additional user code to be implemented so custom commands can be developed and easily integrated.
UART Serial Port Setup: 115200 Baud, 8 bits, No Parity, No handshaking.
A USB to Serial adapter is provided in the kit which can be used with PC's that don't have a serial port.
At power on reset (POR) the revision of the program will be displayed on the LEDs for two seconds in
binary format where LED1 is the LSB. After two seconds they will be turned off then LED7 will flash every
second as the main MCU "live" operating indicator. A message will also be sent to the Serial Port . For
Receive mode it will be shown as:
Holt HI 3110 Demonstration Software Revision: xx
Receive Mode polled
7
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AN-175
Holt Integrated Circuits