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
Revision 1:c720fcb68396, committed 2015-04-10
- Comitter:
- el13a2w
- Date:
- Fri Apr 10 14:14:52 2015 +0000
- Parent:
- 0:b6b1dc0389cb
- Child:
- 2:272d9de9f37e
- Commit message:
- 2
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Thu Apr 09 10:22:49 2015 +0000
+++ b/main.cpp Fri Apr 10 14:14:52 2015 +0000
@@ -4,6 +4,8 @@
#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
@@ -17,6 +19,7 @@
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
@@ -42,10 +45,25 @@
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)
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.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.drawCircle(37,27,1,1); // x,y,radius,black fill
+ lcd.drawCircle(47,27,1,1); // x,y,radius,black fill
+ wait(1);
+ lcd.clear(); // Clear all pixels off display
+
serial.baud(9600); // set baud rate
unit.rise(&uPressed); // call ISR on rising edge (button pressed)
display.rise(&dPressed); // call ISR on rising edge (button pressed)
@@ -55,20 +73,25 @@
timer4.attach(&timer4Expired,0.5); // 2s timer
timer5.attach(&timer5Expired,0.1); // 2s timer
serial.attach(&serialISR); // attach serial ISR
- char buffer[30]; // buffer used to store time string
+ char buffer[30]; // buffer used to store information
set_time(0); // initialise time to 1st January 1970
led1 = 1;
+
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();
time_t seconds = time(NULL); // get current time
// format time into a string (time and date)
- strftime(buffer, 30 , "%D %r", localtime(&seconds));
- //if (dFlag) {
- //writeDataToFile(buffer, distance); // write current value to disk
- //}
+ strftime(buffer, 30 , "%b %d, %X", localtime(&seconds));
+ /*if (dFlag) {
+ writeDataToFile(buffer, distance); // write current value to disk
+ }*/
+ lcd.clear();
+ lcd.init(); // initialise display
if (distance<30) {
if (timer5Flag) {
timer5Flag = 0;
@@ -79,8 +102,24 @@
if (uFlag) {
float mdistance = distance/100;
serial.printf("%s, %.2f m\n",buffer, mdistance);
+ float length = sprintf(buffer,"D = %.2f m",mdistance);
+ if (dFlag) {
+ if (length <= 14) {
+ lcd.printString(buffer,7,1);
+ }
+ } else {
+ lcd.drawRect(1,1,84,48,1); // filled black rectangle
+ }
} else {
serial.printf("%s, %.0f cm\n",buffer, distance);
+ float length = sprintf(buffer,"D = %.2f cm",distance);
+ if (dFlag) {
+ if (length <= 14) {
+ lcd.printString(buffer,7,1);
+ }
+ } else {
+ lcd.drawRect(1,1,84,48,1); // filled black rectangle
+ }
}
serial.printf("Rate = 0.1\n");
warning();
@@ -95,11 +134,27 @@
if (uFlag) {
float mdistance = distance/100;
serial.printf("%s, %.2f m\n",buffer, mdistance);
+ float length = sprintf(buffer,"D = %.2f m",mdistance);
+ if (dFlag) {
+ if (length <= 14) {
+ lcd.printString(buffer,7,1);
+ }
+ } else {
+ lcd.drawRect(1,1,64,48,1); // filled black rectangle
+ }
} else {
serial.printf("%s, %.0f cm\n",buffer, distance);
+ float length = sprintf(buffer,"D = %.2f cm",distance);
+ if (dFlag) {
+ if (length <= 14) {
+ lcd.printString(buffer,7,1);
+ }
+ } else {
+ lcd.drawRect(1,1,64,48,1); // filled black rectangle
+ }
}
+ serial.printf("Rate = 0.1\n");
warning();
- serial.printf("Rate = 0.5\n");
}
} else if (distance<90) {
if (timer3Flag) {
@@ -111,11 +166,27 @@
if (uFlag) {
float mdistance = distance/100;
serial.printf("%s, %.2f m\n",buffer, mdistance);
+ float length = sprintf(buffer,"D = %.2f m",mdistance);
+ if (dFlag) {
+ if (length <= 14) {
+ lcd.printString(buffer,7,1);
+ }
+ } else {
+ lcd.drawRect(1,1,44,48,1); // filled black rectangle
+ }
} else {
serial.printf("%s, %.0f cm\n",buffer, distance);
+ float length = sprintf(buffer,"D = %.2f cm",distance);
+ if (dFlag) {
+ if (length <= 14) {
+ lcd.printString(buffer,7,1);
+ }
+ } else {
+ lcd.drawRect(1,1,44,48,1); // filled black rectangle
+ }
}
+ serial.printf("Rate = 0.1\n");
warning();
- serial.printf("Rate = 1\n");
}
} else if (distance<120) {
if (timer2Flag) {
@@ -127,11 +198,27 @@
if (uFlag) {
float mdistance = distance/100;
serial.printf("%s, %.2f m\n",buffer, mdistance);
+ float length = sprintf(buffer,"D = %.2f m",mdistance);
+ if (dFlag) {
+ if (length <= 14) {
+ lcd.printString(buffer,7,1);
+ }
+ } else {
+ lcd.drawRect(1,1,24,48,1); // filled black rectangle
+ }
} else {
serial.printf("%s, %.0f cm\n",buffer, distance);
+ float length = sprintf(buffer,"D = %.2f cm",distance);
+ if (dFlag) {
+ if (length <= 14) {
+ lcd.printString(buffer,7,1);
+ }
+ } else {
+ lcd.drawRect(1,1,24,48,1); // filled black rectangle
+ }
}
+ serial.printf("Rate = 0.1\n");
warning();
- serial.printf("Rate = 1.5\n");
}
} else {
if (timer1Flag) {
@@ -143,11 +230,27 @@
if (uFlag) {
float mdistance = distance/100;
serial.printf("%s, %.2f m\n",buffer, mdistance);
+ float length = sprintf(buffer,"D = %.2f m",mdistance);
+ if (dFlag) {
+ if (length <= 14) {
+ lcd.printString(buffer,7,1);
+ }
+ } else {
+ lcd.drawRect(1,1,4,48,1); // filled black rectangle
+ }
} else {
serial.printf("%s, %.0f cm\n",buffer, distance);
+ float length = sprintf(buffer,"D = %.2f cm",distance);
+ if (dFlag) {
+ if (length <= 14) {
+ lcd.printString(buffer,7,1);
+ }
+ } else {
+ lcd.drawRect(1,1,4,48,1); // filled black rectangle
+ }
}
+ serial.printf("Rate = 0.1\n");
warning();
- serial.printf("Rate = 2\n");
}
}
if (setTimeFlag) { // if updated time has been sent
@@ -230,13 +333,14 @@
void warning()
{
+ float vol = pot.read()/5;
led2 = !led2;
- buzzer = 0.5;
+ buzzer = vol+0.8;
}
void writeDataToFile(char* buffer, float distance)
{
- leds = 15; // turn on LEDs for feedback
+ leds = 1; // turn on LEDs for feedback
FILE *fp = fopen("/local/log.csv", "a"); // open 'log.csv' for appending
// if the file doesn't exist it is created, if it exists, data is appended to the end
fprintf(fp,"%s, %.2f\n",buffer, distance); // print string to file