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PNI CommBoard User Manual Page 18

6 I

C Operation

The SpacePoint Scout and RM3100 Evaluation Board offer the option of using an I

C interface.

Refer to Figure 4-3 to configure the CommBoard for the desired interface. This section reviews

how to use the CommBoard to communicate using the I

C interface via a terminal emulation

program. If the user will employ the Scout‟s UART interface, then the CommBoard simply

passes the UART commands through the USB interface using the virtual communication port, as

discussed in Section 4.1. If the user will employ the RM3100 Evaluation Board‟s SPI interface,

refer to Section 5.

Note the I

C interface operates exclusively in hexadecimal, and the hexadecimal digits “a”

through “f” must be lower case. In addition to converting UART to I

C, the CommBoard allows

for monitoring the DRDY line. A summary of commands for working with an I

C interface is

given below.

Table 6-1: I

C Command Summary Table

Byte

Code

Command

Syntax

Response

{

Start of I

C Read

Command packet

{SLA REG NUM}

REG = Command or Register number in hex(uint8)

NUM = Number of bytes to read

}

Start I

C Read

Packet with STOP

HEX((uint8)data)

[

Start of I

C Write

Command Packet

[SLA REG data, data, data…..]

SLA = Slave 8-bit Address (R/W bit will be

overridden)

REG = Command or Register number (Uint8)

data = 8-bit data in 2-byte ASIC HEX format

]

Send I

C Write

Packet with STOP

<SP>

<TAB>

Delimiters

Delimiters. Used to separate characters or data in

the return data string sent to the host.

Hold for DRDY

Y,y

Hold Always

Quit Hold

Q (Capital „Q‟ only)

Flush UART

Receive Buffer

F (Capital „F‟ only)

Reset I

Set I

C clock

&# where # = 0-A (single digit)

T,t

Terminal Mode

Lower case „t‟ turns off terminal mode. Capital „T‟

turns on verbose terminal mode.

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Comentarios a estos manuales

ChrisPlafe 26 Apr 2024 | 08:28:15

Hello, im noob :)

Pni CommBoard Manual de usuario Pagina 20

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