Spi Mode; Example-Script - DEUTSCHMANN AUTOMATION UNIGATE IC2 - Fast Ethernet Instruction Manual

Synchronous serial interface
WriteShiftRegister( OutBuffer[0] );
ReadShiftRegister( InBuffer[0] );
// Input data is now in the INBuffer
// 0x58 is applied to the outputs of the analog converter
// 0x21 at the shift register's outputs
5.2

SPI mode

Before the interface can be used in SPI mode, this must be initialized. The command InitSPI
sets the operating type, the mode (signal polarity and phase) and the clock frequency.
The data exchange ensues with the command ExchangeSPI. The maximum clock frequency is
12 MHz. For details please see the IC2-Pinout list in the download area of our website.
Please also refer to the script commands documentation in the online help of the Protocol Devel-
oper.
5.2.1

Example-Script

var L_Freq : long;
var b_Channel : byte;
var w_Len : word;
var a_BufOut : buffer[100];
var a_BufIn : buffer[100];
moveconst( L_Freq, 1000000); // 1 MHz
InitSPI( 1 , 0 , L_Freq );
moveconst( b_Chanel, 0 );
moveconst( w_Len, 11 );
moveconst( a_BufOut[0], "Hello World" ); 
ExchangeSPI( b_Channel , w_Len , a_BufOut[0] , a_BufIn[0] );
25 Instruction manual UNIGATE
Deutschmann Automation GmbH & Co. KG
®
IC2 - Fast Ethernet V. 1.2 3.4.20