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PNI CommBoard User Manual Page 9

5 SPI Operation

The RM3100 Evaluation Board, RM3000-f Evaluation Board and V2Xe incorporate a SPI

interface. For the RM3100 an I

C interface is also available, as discussed in Section 6. This

section reviews how to use the CommBoard to communicate with these SPI devices via a

computer using a terminal emulation program. Note the CommBoard not only converts UART

to SPI, but it also allows for control and monitoring of the SSN, CLEAR, and DRDY lines.

5.1 SPI Commands

A summary of the commands relevant for working with SPI devices is given below.

Table 5-1: SPI Command Summary Table

ASCII

Char.

Command

Syntax

Response

W, w

SPI Write

W{NIML}#(delimiter){{NIML}#(delimiter)…}{<CR>}

R, r

SPI Read

R{#}{S}(NIML){{#}{S}(NIML)…}<CR>

#{(delimiter)#...}{<CR>}

<SP>

<TAB>

<CR>

Delimiter

Delimiters. Used to separate characters or data

in a string. Sending a delimiter also changes the

default delimiter used in the return data string

sent to host.

X, x

Hex/ Decimal

X = Hex mode (default), x= Decimal mode

Hold for

DRDY

~1 = Hold until DRDY HIGH,

~0 = Hold until DRDY LOW

Y, y

Hold Always

Quit Hold

Q (Capital „Q‟ only)

Flush UART

Receive

Buffer

F (Capital „F‟ only)

Handshake

Status

Num2str (Uint8) or

dec2hex(Uint8). More

verbose in terminal

mode

Pulse CLEAR

SSN Control

$1 = Set SSN HIGH, $0=Set SSN LOW

Pause 2 ms

V, v

CPHA Setting

“V” sets CPHA=1, “v” sets CPHA=0

O, o

CPOL Setting

“O” sets CPOL=1, “o” sets CPOL=0

Z, z

Clock Rate

“Z” = 1 MHz, “z” = 50 kHz, default = 100 kHz

T, t

Terminal

Mode

“T” turns on verbose terminal mode. “t” turns off

terminal mode.

For “T”: Sign-on text

including mode and

version number

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 22 23

Comentarios a estos manuales

ChrisPlafe 26 Apr 2024 | 08:28:15

Hello, im noob :)

Pni CommBoard Manual de usuario Pagina 11

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