NXC C programs, Other Subject

Assignment Help:
A description of each function used in the program.

Theree programs:

/* HiTechnic Experimenter''s Kit Program

Experiment - 6 Reaction Time Measurement

This program measures the time taken to press a button switch after an LED is turned on.

(c) HiTechnic 2009

*/
#include "NXCDefs.h"

#define PROTO_PORT IN_1

int currtime;
int deltatime;
int randomtime;
int inputdata;
int outputdata;
int count;
byte cmndbuf[]; // buffer for outbound I2C command
byte respbuf[]; // buffer for inbound I2C response

/* protoboard I/O map
42,43 - A0 input
44,45 - A1 input
46,47 - A2 input
48,49 - A3 input
4A,4B - A4 input
4C - B inputs
4D - B outputs
4E - B controls
*/

void readdata()
{
ArrayInit(cmndbuf, 0, 2); // set the buffer to hold 2 values
cmndbuf[0] = 0x02; // set write to channel
cmndbuf[1] = 0x4C; // to set read address
count=1; // 1 byte to read
I2CBytes(PROTO_PORT, cmndbuf, count, respbuf); // issue I2C write command and read the byte back
inputdata=respbuf[0]&0x03;
}

void writedata()
{
ArrayInit(cmndbuf, 0, 3); // set the buffer to hold 3 values
cmndbuf[0] = 0x02; // set write to channel
cmndbuf[1] = 0x4D; // to set write address
cmndbuf[2] = outputdata; // to set write data
count=0; // no bytes to read
I2CBytes(PROTO_PORT, cmndbuf, count, respbuf); // issue I2C write command and read the byte back
}

task main()
{
SetSensorLowspeed(PROTO_PORT); // set sensor port 1 to low speed serial (I2C)
Wait(100);

ArrayInit(cmndbuf, 0, 3); // set the buffer to hold 3 values
cmndbuf[0] = 0x02; // set write to channel
cmndbuf[1] = 0x4E; // to set write address
cmndbuf[2] = 0x30; // to write 001111
count=0; // no bytes to read
I2CBytes(PROTO_PORT, cmndbuf, count, respbuf); // issue I2C write command
Wait(100);

while (TRUE)
{
outputdata=0;
writedata();
ClearScreen();
TextOut(20, LCD_LINE2, "running");
randomtime=Random(5000)+5000;
Wait(randomtime);

outputdata=0x10;
writedata();
currtime=CurrentTick();

inputdata=0x00;
while(inputdata!=0x01)
{
readdata();
}
deltatime=CurrentTick()-currtime;
ClearScreen();
NumOut(20, LCD_LINE2, deltatime);

inputdata=0x00;
while(inputdata!=0x03)
{
readdata();
}
}
}

Related Discussions:- NXC C programs

What are the variables that influence long-term exposure, Exposure to organ...

Exposure to organic dust occurs in a variety of different environments that can be broadly categorized into agricultural environments, industrial environments, office buildings and

Pancreas in digestion process, The pancreas is an organ that secretes, into...

The pancreas is an organ that secretes, into the small intestine, three classes of digestive enzymes that help break down fats, proteins, and carbohydrates. It also secretes "buffe

Library stacking, what do you understand by stacking? discuss the different...

what do you understand by stacking? discuss the different methods of stacking in libraries.

Sample of a good academic project proposal , Example Project Proposal ...

Example Project Proposal   Title   A Database System to Record Compliance with Software Licence Agreements. Introduction The area of software licensing has becom

Foundation Course in Science and Technology Bachelor’s De, Describe the ...

Describe the factors which decide the broad area of Scientific activity?

SOCIAL STUDIES HOMEWORK, How have communities such as Atlantic City on the ...

How have communities such as Atlantic City on the Jersy Shore changed over time?

Political geography, Political Geography: Political geography is a branch ...

Political Geography: Political geography is a branch of human geography (the branch of geography concerned with understanding the world's culture and how it relates to geographic

M-commerce, WHAT IS M-COMMERCE? M-commerce or mobile commerce is the bu...

WHAT IS M-COMMERCE? M-commerce or mobile commerce is the buying and selling of services and goods through wireless technology- i.e. handheld devices such as and personal digita

THREE PHASE CLAMP-ON TYPE POWER ANALYZER, I need circuit diagram and codin...

I need circuit diagram and coding of microcontroller .kindly help me.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd