data编程代写、代做C++，Python程序
1.Project Temperature Controlled Fan

The temperature controlled fan activates or turn off a fan determined by the ambient temperature. Refer to the appendix for the circuit.

Figure 1-1

2.Code Development Part 1

2.1I/O Initialisation

Create the I/O initialization routine.

Refer to the schematic to determine which are the I/O that are inputs and outputs using the DDRx registers. Digital input ports must be set to logic ‘0’.

For I/O that are analog, their digital function must be disabled using the DIDRO register. Their logic needs to be set to ‘0’. void ioInit(){
DDRB =
DDRC =
DDRD =
PORTB =
PORTC =
PORTD =
DIDR0 =
}

Listing 2-1

2.2 3-Digit Display

The concept of driving the 3-digit multiplexing display is shown in Figure 2-1.

A timer interrupt determines the rate of multiplexing. The displayNow( ) is call whenever the timer interrupt. The global variable dpNum stores the 3-digit number to be displayed. The global variable whichDigit determines which digit to turn on. Example, if whichDigit is “2” and dpNum is “295”. The displayNow( ) function when called, will display “9” on the 2nd digit (display the 10th). The displayNow( ) function also maintains the content inside whichDigit to between 1 to 3.

Listing 2-2 shows an example of how the displayNow( ) function can be written.


unsigned int dpNum; // Declare these 2 variables as global.
unsigned char whichDigit;

void displayNow(){
PORTB = // Turn off all mux transistors.
PORTC = // Clear the 4 bit BCD output ports to 0.

switch(whichDigit){
case 1: PORTC = (PORTC & 0xF0) | (dpNum/100);// Display 100th.
PORTB = (PORTB & 0xF8) | 0x01 // Turn on mux 1 transistor.
break;
case 2: // Complete case 2 & 3.

case 3:

}
whichDigit++; // Setup for next digit.
if (whichDigit>3) whichDigit = 1; // Set back to 1st digit.
}

Listing 2-2


2.3 Timer 0 Interrupt

Program timer 0 to interrupt at an interval of 5ms. The displayNow( ) function is called every interrupt. This will take care of the multiplexing display of the content in variable displayNumber.

void interruptInit(){
// Run timer 0 with prescaler 1024.
TCCR0B =
// Enable timer 0 interrupt.
TIMSK0 =
}
ISR(TIMER0_OVF_vect) {
// Load timer for 5 ms overflow.
TCNT0 =
displayNow();
}
Listing 2-3

2.4 Test Your Multiplexing Display

Test your program. You should see the 3-digit LED display showing the number in the variable displayNumber. #include
#include

// Declare your global variables here.

// Place all supporting functions here.

int main(){
ioInit();
interruptInit();
// Place the Global Interrupt enable
// instruction here.
while(1){
// Nothing need to be done
// in this while-loop.
}

Listing 2-4

3.Code Development Part 2

3.1 ADC

Create 2 functions: (1) readADC( ) and (2) initADC( ). Merge this program with the codes you have developed in Code Development Part 1. Test your ADC acquisition by reading the temperature sensor into a variable (tempInADC) and pass the content to the variable dpNum. The content in the dpNum variable will be displayed on the 3-digit LED display. Note that the display number is the ADC value and not the temperature.





unsigned int readADC(){
// Select ADC channel to read.
ADMUX =
// Start ADC conversion.
ADCSRA =
// Wait for ADC conversion complete.
- - - -
// Reset ADC complete flag.
- - - -
// Return converted value.
- - - -
}
void initADC(){
// Enable ADC, clear ADC conversion flag
// & set ADC clock.
ADCSRA =
// Set up reference voltage.
ADMUX =
}

int main(){
- - - -
// Merge with the codes in Listing 2-4.
- - - -
- - - -
initADC();
while(1){
tempInADC = readADC();
dpNum = tempInADC;
}
}

Listing 3-1

3.2 Convert ADC Reading to Temperature

Modify the program in Listing 3-1 to display temperature instead of ADC value. Add a conversion function to convert the temperature in ADC value to oC before passing the data to dpNum for display. If your hardware is capable of displaying the decimal point, you should program it.


unsigned int readADC(){
- - - - -
- - - - -
}


unsigned int convert(unsigned int k){

// Perform the conversion of ADC value
// to temperature value here and store
// the final value in temperature.

return(temperature);
}

int main(){
- - - -
- - - -
while(1){
tempInADC = readADC();
dpNum = convert(tempInADC);
}
}

Listing 3-2

4.Code Development Part 3

4.1 Activating the Fan

Define the temperature to turn on and off the fan. In the main( ) function, use decision making instruction such as if-statement to decide when to turn on or off the fan.

#include
#include
#define TurnOnTemp 260
#define TurnOffemp 250 int main(){
- - - -
- - - -
while(1){
tempInADC = readADC();
dpNum = convert(tempInADC);

// If temperature greater or equal
// TurnOnTemp, activate the fan.
// If temoerature less or equal to
// TurnOffTemp, off the fan.
}
}

Listing 4-1
5.Additional Features

Notice that the following resources on the circuit*1 which are not used in the above coding:

1.Potentiometer, VR1
2.LED. D2
3.A set of pusb buttons, SW1 to SW3

What other features can you add to your “product”?

*1 Referring to the project circuit. If you are using the trainer circuit, the resources are different.
Appendix A: Project Board Schematic

Appendix B: Trainer Schematic

END OF PAPER

热门主题

课程名

mktg2509 csci 2600 38170 lng302 csse3010 phas3226 77938 arch1162 engn4536/engn6536 acx5903 comp151101 phl245 cse12 comp9312 stat3016/6016 phas0038 comp2140 6qqmb312 xjco3011 rest0005 ematm0051 5qqmn219 lubs5062m eee8155 cege0100 eap033 artd1109 mat246 etc3430 ecmm462 mis102 inft6800 ddes9903 comp6521 comp9517 comp3331/9331 comp4337 comp6008 comp9414 bu.231.790.81 man00150m csb352h math1041 eengm4100 isys1002 08 6057cem mktg3504 mthm036 mtrx1701 mth3241 eeee3086 cmp-7038b cmp-7000a ints4010 econ2151 infs5710 fins5516 fin3309 fins5510 gsoe9340 math2007 math2036 soee5010 mark3088 infs3605 elec9714 comp2271 ma214 comp2211 infs3604 600426 sit254 acct3091 bbt405 msin0116 com107/com113 mark5826 sit120 comp9021 eco2101 eeen40700 cs253 ece3114 ecmm447 chns3000 math377 itd102 comp9444 comp(2041|9044) econ0060 econ7230 mgt001371 ecs-323 cs6250 mgdi60012 mdia2012 comm221001 comm5000 ma1008 engl642 econ241 com333 math367 mis201 nbs-7041x meek16104 econ2003 comm1190 mbas902 comp-1027 dpst1091 comp7315 eppd1033 m06 ee3025 msci231 bb113/bbs1063 fc709 comp3425 comp9417 econ42915 cb9101 math1102e chme0017 fc307 mkt60104 5522usst litr1-uc6201.200 ee1102 cosc2803 math39512 omp9727 int2067/int5051 bsb151 mgt253 fc021 babs2202 mis2002s phya21 18-213 cege0012 mdia1002 math38032 mech5125 07 cisc102 mgx3110 cs240 11175 fin3020s eco3420 ictten622 comp9727 cpt111 de114102d mgm320h5s bafi1019 math21112 efim20036 mn-3503 fins5568 110.807 bcpm000028 info6030 bma0092 bcpm0054 math20212 ce335 cs365 cenv6141 ftec5580 math2010 ec3450 comm1170 ecmt1010 csci-ua.0480-003 econ12-200 ib3960 ectb60h3f cs247—assignment tk3163 ics3u ib3j80 comp20008 comp9334 eppd1063 acct2343 cct109 isys1055/3412 math350-real math2014 eec180 stat141b econ2101 msinm014/msing014/msing014b fit2004 comp643 bu1002 cm2030
联系我们
EMail: 99515681@qq.com
QQ: 99515681
留学生作业帮-留学生的知心伴侣！
工作时间：08:00-21:00
python代写
微信客服：codinghelp
站长地图