Adrian Wong
This program allows user to measure distance with SRF02 distance sensor and display the result on a Nokia LCD Display
Dependencies: N5110 PowerControl SRF02 mbed
Diff: main.cpp
- Revision:
- 3:012cdc8e0f75
- Parent:
- 2:272d9de9f37e
- Child:
- 4:880995b4a063
--- a/main.cpp Fri Apr 10 14:38:27 2015 +0000
+++ b/main.cpp Sun Apr 26 19:41:25 2015 +0000
@@ -3,62 +3,19 @@
#include "PowerControl/EthernetPowerControl.h"
#include "SRF02.h"
#include "N5110.h"
-
-// vcc, sce, rst, dc, mosi, clk, led
-N5110 lcd(p7,p8,p9,p10,p11,p13,p26); //pwm for led backlight
-BusOut leds(LED4,LED3,LED2,LED1); // Onboard LEDs
-SRF02 sensor(p28,p27); // sda, scl
-Serial serial(USBTX,USBRX); // tx, rx
-Ticker timer1; // timer1
-Ticker timer2; // timer2
-Ticker timer3; // timer3
-Ticker timer4; // timer4
-Ticker timer5; // timer5
-InterruptIn unit(p16); // input interrupt button
-InterruptIn display(p17); // input interrupt button
-DigitalOut led1(p24); // on/off LED
-DigitalOut led2(p23); // warning LED
-PwmOut buzzer(p21); // warning buzzer
-AnalogIn pot(p20);
-LocalFileSystem local("local"); // create local filesystem
-
-void serialISR(); // ISR that is called when serial data is received
-void setTime(); // function to set the UNIX time
-char rxString[16]; // buffer to store received string
-void error(int code); // determines error
-void uPressed(); // function to action of unit button
-void dPressed(); // function to action of display button
-void timer1Expired(); // function to action when timer1 triggers
-void timer2Expired(); // function to action when timer2 triggers
-void timer3Expired(); // function to action when timer3 triggers
-void timer4Expired(); // function to action when timer4 triggers
-void timer5Expired(); // function to action when timer5 triggers
-void warning(); // warning function
-void writeDataToFile(char* buffer, float distance); // function to write data to file
-float measureDistance(); // function to get distance
-
-int timer1Flag = 0; // set timer1Flag
-int timer2Flag = 0; // set timer2Flag
-int timer3Flag = 0; // set timer3Flag
-int timer4Flag = 0; // set timer4Flag
-int timer5Flag = 0; // set timer5Flag
-int uFlag = 0; // set unitFlag
-int dFlag = 0; // set displayFlag
-int setTimeFlag = 0; // flag for ISR
-int nGen[84][48]; // array set
-int x = 84; // size of set horizontally (x-axis)
-int y = 48; //size of set vertically (y-axis)
+#include "main.h"
int main()
{
+ //PHY_PowerDown();
lcd.init(); // initialise display
- lcd.printString("Ultrasonic", 13,1);
- lcd.printString("Sensor", 25,2);
- lcd.printString("Adrian Wong", 9,4);
+ lcd.printString("Ultrasonic", 13,1); // print string on row 1
+ lcd.printString("Sensor", 25,2); // print string on row 2
+ lcd.printString("Adrian Wong", 9,4); // print string on row 4
lcd.drawRect(1,1,81,45,0); // transparent, just outline
lcd.drawRect(5,26,28,2,1); // filled black rectangle
lcd.drawRect(51,26,28,2,1); // filled black rectangle
- lcd.printString("X", 40,3);
+ lcd.printString("X", 40,3); // print string on row 3
lcd.drawCircle(37,27,1,1); // x,y,radius,black fill
lcd.drawCircle(47,27,1,1); // x,y,radius,black fill
wait(1);
@@ -68,10 +25,10 @@
unit.rise(&uPressed); // call ISR on rising edge (button pressed)
display.rise(&dPressed); // call ISR on rising edge (button pressed)
timer1.attach(&timer1Expired,2); // 2s timer
- timer2.attach(&timer2Expired,1.5); // 2s timer
- timer3.attach(&timer3Expired,1); // 2s timer
- timer4.attach(&timer4Expired,0.5); // 2s timer
- timer5.attach(&timer5Expired,0.1); // 2s timer
+ timer2.attach(&timer2Expired,1.5); // 1.5s timer
+ timer3.attach(&timer3Expired,1); // 1s timer
+ timer4.attach(&timer4Expired,0.5); // 0.5s timer
+ timer5.attach(&timer5Expired,0.1); // 0.1s timer
serial.attach(&serialISR); // attach serial ISR
char buffer[30]; // buffer used to store information
char buffer1[14]; // buffer used to store distance for LCD
@@ -83,40 +40,40 @@
while(1) {
lcd.normalMode(); // normal colour mode
lcd.setBrightness(0.5); // put LED backlight on 50%
- led2 = 0;
- buzzer = 0;
- buzzer.period(0.001);
- float distance = measureDistance();
+ led2 = 0; // resets led2
+ buzzer = 0; // resets buzzer
+ buzzer.period(0.001); // sets buzzer pwm period
+ float distance = measureDistance(); // get the distance
time_t seconds = time(NULL); // get current time
// format time into a string (time and date)
- strftime(buffer, 30 , "%b %d, %X", localtime(&seconds));
- strftime(buffer2, 14 , "%X", localtime(&seconds));
- strftime(buffer3, 14 , "%b %d", localtime(&seconds));
+ strftime(buffer, 30 , "%b %d, %X", localtime(&seconds)); // set buffer to store time and date
+ strftime(buffer2, 14 , "%X", localtime(&seconds)); // set buffer2 to store time
+ strftime(buffer3, 14 , "%b %d", localtime(&seconds)); // set buffer3 to store date and month
/*if (dFlag) {
writeDataToFile(buffer, distance); // write current value to disk
}*/
- lcd.clear();
+ lcd.clear(); // clear display
lcd.init(); // initialise display
if (distance<30) {
if (timer5Flag) {
- timer5Flag = 0;
- timer4Flag = 0;
- timer3Flag = 0;
- timer2Flag = 0;
- timer1Flag = 0;
+ timer5Flag = 0; // resets timer flag
+ timer4Flag = 0; // resets timer flag
+ timer3Flag = 0; // resets timer flag
+ timer2Flag = 0; // resets timer flag
+ timer1Flag = 0; // resets timer flag
if (uFlag) {
- float mdistance = distance/100;
- serial.printf("%s, %.2f m\n",buffer, mdistance);
- float length = sprintf(buffer1,"D = %.2f m",mdistance);
- float length1 = sprintf(buffer2,"%s",buffer2);
- float length2 = sprintf(buffer3,"%s",buffer3);
+ float mdistance = distance/100; // get distance in metres
+ serial.printf("%s, %.2f m\n",buffer, mdistance); // print time then distance in metres
+ float length = sprintf(buffer1,"D = %.2f m",mdistance); // print distance on lcd
+ float length1 = sprintf(buffer2,"%s",buffer2); // print time
+ float length2 = sprintf(buffer3,"%s",buffer3); // print date and month
if (dFlag) {
if (length <= 14) {
if (length1 <= 14) {
if (length2 <= 14) {
- lcd.printString(buffer1,3,1);
- lcd.printString(buffer2,18,4);
- lcd.printString(buffer3,24,3);
+ lcd.printString(buffer1,3,1); // print on row 1
+ lcd.printString(buffer2,18,4); // print on row 4
+ lcd.printString(buffer3,24,3); // print on row 3
}
}
}
@@ -124,17 +81,17 @@
lcd.drawRect(1,1,84,48,1); // filled black rectangle
}
} else {
- serial.printf("%s, %.0f cm\n",buffer, distance);
- float length = sprintf(buffer1,"D = %.2f cm",distance);
- float length1 = sprintf(buffer2,"%s",buffer2);
- float length2 = sprintf(buffer3,"%s",buffer3);
+ serial.printf("%s, %.0f cm\n",buffer, distance); // print time then distance in centimetres
+ float length = sprintf(buffer1,"D = %.2f cm",distance); // print distance on lcd
+ float length1 = sprintf(buffer2,"%s",buffer2); // print time
+ float length2 = sprintf(buffer3,"%s",buffer3); // print date and month
if (dFlag) {
if (length <= 14) {
if (length1 <= 14) {
if (length2 <= 14) {
- lcd.printString(buffer1,3,1);
- lcd.printString(buffer2,18,4);
- lcd.printString(buffer3,24,3);
+ lcd.printString(buffer1,3,1); // print on row 1
+ lcd.printString(buffer2,18,4); // print on row 4
+ lcd.printString(buffer3,24,3); // print on row 3
}
}
}
@@ -147,24 +104,24 @@
}
} else if (distance<60) {
if (timer4Flag) {
- timer5Flag = 0;
- timer4Flag = 0;
- timer3Flag = 0;
- timer2Flag = 0;
- timer1Flag = 0;
+ timer5Flag = 0; // resets timer flag
+ timer4Flag = 0; // resets timer flag
+ timer3Flag = 0; // resets timer flag
+ timer2Flag = 0; // resets timer flag
+ timer1Flag = 0; // resets timer flag
if (uFlag) {
- float mdistance = distance/100;
- serial.printf("%s, %.2f m\n",buffer, mdistance);
- float length = sprintf(buffer1,"D = %.2f m",mdistance);
- float length1 = sprintf(buffer2,"%s",buffer2);
- float length2 = sprintf(buffer3,"%s",buffer3);
+ float mdistance = distance/100; // get distance in metres
+ serial.printf("%s, %.2f m\n",buffer, mdistance); // print time then distance in metres
+ float length = sprintf(buffer1,"D = %.2f m",mdistance); // print distance on lcd
+ float length1 = sprintf(buffer2,"%s",buffer2); // print time
+ float length2 = sprintf(buffer3,"%s",buffer3); // print date and month
if (dFlag) {
if (length <= 14) {
if (length1 <= 14) {
if (length2 <= 14) {
- lcd.printString(buffer1,3,1);
- lcd.printString(buffer2,18,4);
- lcd.printString(buffer3,24,3);
+ lcd.printString(buffer1,3,1); // print on row 1
+ lcd.printString(buffer2,18,4); // print on row 4
+ lcd.printString(buffer3,24,3); // print on row 3
}
}
}
@@ -172,17 +129,17 @@
lcd.drawRect(1,1,64,48,1); // filled black rectangle
}
} else {
- serial.printf("%s, %.0f cm\n",buffer, distance);
- float length = sprintf(buffer1,"D = %.2f cm",distance);
- float length1 = sprintf(buffer2,"%s",buffer2);
- float length2 = sprintf(buffer3,"%s",buffer3);
+ serial.printf("%s, %.0f cm\n",buffer, distance); // print time then distance in centimetres
+ float length = sprintf(buffer1,"D = %.2f cm",distance); // print distance on lcd
+ float length1 = sprintf(buffer2,"%s",buffer2); // print time
+ float length2 = sprintf(buffer3,"%s",buffer3); // print date and month
if (dFlag) {
if (length <= 14) {
if (length1 <= 14) {
if (length2 <= 14) {
- lcd.printString(buffer1,3,1);
- lcd.printString(buffer2,18,4);
- lcd.printString(buffer3,24,3);
+ lcd.printString(buffer1,3,1); // print on row 1
+ lcd.printString(buffer2,18,4); // print on row 4
+ lcd.printString(buffer3,24,3); // print on row 3
}
}
}
@@ -195,24 +152,24 @@
}
} else if (distance<90) {
if (timer3Flag) {
- timer5Flag = 0;
- timer4Flag = 0;
- timer3Flag = 0;
- timer2Flag = 0;
- timer1Flag = 0;
+ timer5Flag = 0; // resets timer flag
+ timer4Flag = 0; // resets timer flag
+ timer3Flag = 0; // resets timer flag
+ timer2Flag = 0; // resets timer flag
+ timer1Flag = 0; // resets timer flag
if (uFlag) {
- float mdistance = distance/100;
- serial.printf("%s, %.2f m\n",buffer, mdistance);
- float length = sprintf(buffer1,"D = %.2f m",mdistance);
- float length1 = sprintf(buffer2,"%s",buffer2);
- float length2 = sprintf(buffer3,"%s",buffer3);
+ float mdistance = distance/100; // get distance in metres
+ serial.printf("%s, %.2f m\n",buffer, mdistance); // print time then distance in metres
+ float length = sprintf(buffer1,"D = %.2f m",mdistance); // print distance on lcd
+ float length1 = sprintf(buffer2,"%s",buffer2); // print time
+ float length2 = sprintf(buffer3,"%s",buffer3); // print date and month
if (dFlag) {
if (length <= 14) {
if (length1 <= 14) {
if (length2 <= 14) {
- lcd.printString(buffer1,3,1);
- lcd.printString(buffer2,18,4);
- lcd.printString(buffer3,24,3);
+ lcd.printString(buffer1,3,1); // print on row 1
+ lcd.printString(buffer2,18,4); // print on row 4
+ lcd.printString(buffer3,24,3); // print on row 3
}
}
}
@@ -220,17 +177,17 @@
lcd.drawRect(1,1,44,48,1); // filled black rectangle
}
} else {
- serial.printf("%s, %.0f cm\n",buffer, distance);
- float length = sprintf(buffer1,"D = %.2f cm",distance);
- float length1 = sprintf(buffer2,"%s",buffer2);
- float length2 = sprintf(buffer3,"%s",buffer3);
+ serial.printf("%s, %.0f cm\n",buffer, distance); // print time then distance in centimetres
+ float length = sprintf(buffer1,"D = %.2f cm",distance); // print distance on lcd
+ float length1 = sprintf(buffer2,"%s",buffer2); // print time
+ float length2 = sprintf(buffer3,"%s",buffer3); // print date and month
if (dFlag) {
if (length <= 14) {
if (length1 <= 14) {
if (length2 <= 14) {
- lcd.printString(buffer1,3,1);
- lcd.printString(buffer2,18,4);
- lcd.printString(buffer3,24,3);
+ lcd.printString(buffer1,3,1); // print on row 1
+ lcd.printString(buffer2,18,4); // print on row 4
+ lcd.printString(buffer3,24,3); // print on row 3
}
}
}
@@ -243,24 +200,24 @@
}
} else if (distance<120) {
if (timer2Flag) {
- timer5Flag = 0;
- timer4Flag = 0;
- timer3Flag = 0;
- timer2Flag = 0;
- timer1Flag = 0;
+ timer5Flag = 0; // resets timer flag
+ timer4Flag = 0; // resets timer flag
+ timer3Flag = 0; // resets timer flag
+ timer2Flag = 0; // resets timer flag
+ timer1Flag = 0; // resets timer flag
if (uFlag) {
- float mdistance = distance/100;
- serial.printf("%s, %.2f m\n",buffer1, mdistance);
- float length = sprintf(buffer,"D = %.2f m",mdistance);
- float length1 = sprintf(buffer2,"%s",buffer2);
- float length2 = sprintf(buffer3,"%s",buffer3);
+ float mdistance = distance/100; // get distance in metres
+ serial.printf("%s, %.2f m\n",buffer, mdistance); // print time then distance in metres
+ float length = sprintf(buffer1,"D = %.2f m",mdistance); // print distance on lcd
+ float length1 = sprintf(buffer2,"%s",buffer2); // print time
+ float length2 = sprintf(buffer3,"%s",buffer3); // print date and month
if (dFlag) {
if (length <= 14) {
if (length1 <= 14) {
if (length2 <= 14) {
- lcd.printString(buffer1,3,1);
- lcd.printString(buffer2,18,4);
- lcd.printString(buffer3,24,3);
+ lcd.printString(buffer1,3,1); // print on row 1
+ lcd.printString(buffer2,18,4); // print on row 4
+ lcd.printString(buffer3,24,3); // print on row 3
}
}
}
@@ -268,17 +225,17 @@
lcd.drawRect(1,1,24,48,1); // filled black rectangle
}
} else {
- serial.printf("%s, %.0f cm\n",buffer, distance);
- float length = sprintf(buffer1,"D = %.2f cm",distance);
- float length1 = sprintf(buffer2,"%s",buffer2);
- float length2 = sprintf(buffer3,"%s",buffer3);
+ serial.printf("%s, %.0f cm\n",buffer, distance); // print time then distance in centimetres
+ float length = sprintf(buffer1,"D = %.2f cm",distance); // print distance on lcd
+ float length1 = sprintf(buffer2,"%s",buffer2); // print time
+ float length2 = sprintf(buffer3,"%s",buffer3); // print date and month
if (dFlag) {
if (length <= 14) {
if (length1 <= 14) {
if (length2 <= 14) {
- lcd.printString(buffer1,3,1);
- lcd.printString(buffer2,18,4);
- lcd.printString(buffer3,24,3);
+ lcd.printString(buffer1,3,1); // print on row 1
+ lcd.printString(buffer2,18,4); // print on row 4
+ lcd.printString(buffer3,24,3); // print on row 3
}
}
}
@@ -291,24 +248,24 @@
}
} else {
if (timer1Flag) {
- timer5Flag = 0;
- timer4Flag = 0;
- timer3Flag = 0;
- timer2Flag = 0;
- timer1Flag = 0;
+ timer5Flag = 0; // resets timer flag
+ timer4Flag = 0; // resets timer flag
+ timer3Flag = 0; // resets timer flag
+ timer2Flag = 0; // resets timer flag
+ timer1Flag = 0; // resets timer flag
if (uFlag) {
- float mdistance = distance/100;
- serial.printf("%s, %.2f m\n",buffer, mdistance);
- float length = sprintf(buffer1,"D = %.2f m",mdistance);
- float length1 = sprintf(buffer2,"%s",buffer2);
- float length2 = sprintf(buffer3,"%s",buffer3);
+ float mdistance = distance/100; // get distance in metres
+ serial.printf("%s, %.2f m\n",buffer, mdistance); // print time then distance in metres
+ float length = sprintf(buffer1,"D = %.2f m",mdistance); // print distance on lcd
+ float length1 = sprintf(buffer2,"%s",buffer2); // print time
+ float length2 = sprintf(buffer3,"%s",buffer3); // print date and month
if (dFlag) {
if (length <= 14) {
if (length1 <= 14) {
if (length2 <= 14) {
- lcd.printString(buffer1,3,1);
- lcd.printString(buffer2,18,4);
- lcd.printString(buffer3,24,3);
+ lcd.printString(buffer1,3,1); // print on row 1
+ lcd.printString(buffer2,18,4); // print on row 4
+ lcd.printString(buffer3,24,3); // print on row 3
}
}
}
@@ -316,17 +273,17 @@
lcd.drawRect(1,1,4,48,1); // filled black rectangle
}
} else {
- serial.printf("%s, %.0f cm\n",buffer, distance);
- float length = sprintf(buffer1,"D = %.2f cm",distance);
- float length1 = sprintf(buffer2,"%s",buffer2);
- float length2 = sprintf(buffer3,"%s",buffer3);
+ serial.printf("%s, %.0f cm\n",buffer, distance); // print time then distance in centimetres
+ float length = sprintf(buffer1,"D = %.2f cm",distance); // print distance on lcd
+ float length1 = sprintf(buffer2,"%s",buffer2); // print time
+ float length2 = sprintf(buffer3,"%s",buffer3); // print date and month
if (dFlag) {
if (length <= 14) {
if (length1 <= 14) {
if (length2 <= 14) {
- lcd.printString(buffer1,3,1);
- lcd.printString(buffer2,18,4);
- lcd.printString(buffer3,24,3);
+ lcd.printString(buffer1,3,1); // print on row 1
+ lcd.printString(buffer2,18,4); // print on row 4
+ lcd.printString(buffer3,24,3); // print on row 3
}
}
}
@@ -408,6 +365,7 @@
void uPressed() // toggle direction in ISR
{
uFlag = !uFlag;
+ wait (0.2);
}
void dPressed() // toggle direction in ISR