Jason lukose
4180 Fish Tank Project
Dependencies: Motordriver NeoStrip mbed-rtos mbed
Fork of
rtos_basic
by 
mbed official
Revision 12:097b52548f0b, committed 2017-12-14
- Comitter:
- 4180Team
- Date:
- Thu Dec 14 04:56:17 2017 +0000
- Parent:
- 11:0309bef74ba8
- Commit message:
- Final 4180 Project
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Motordriver.lib Thu Dec 14 04:56:17 2017 +0000 @@ -0,0 +1,1 @@ +http://os.mbed.com/users/littlexc/code/Motordriver/#3110b9209d3c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/NeoStrip.lib Thu Dec 14 04:56:17 2017 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/4180Team/code/NeoStrip/#bcd2cc14bd34
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/gt.h Thu Dec 14 04:56:17 2017 +0000
@@ -0,0 +1,12 @@
+/**** gt.h ****/
+
+const int gt_img[] = {
+ 0x122446, 0xffff00, 0xffff00, 0xffff00, 0xffff00, 0x122446, 0x122446, 0x122446,
+ 0xffff00, 0xffff00, 0x122446, 0x122446, 0x122446, 0x122446, 0x122446, 0x122446,
+ 0xffff00, 0x122446, 0x122446, 0x122446, 0x122446, 0x122446, 0x122446, 0x122446,
+ 0xffff00, 0x122446, 0x122446, 0xffff00, 0xffff00, 0xffff00, 0xffff00, 0xffff00,
+ 0xffff00, 0xffff00, 0x122446, 0x122446, 0xffff00, 0x122446, 0xffff00, 0x122446,
+ 0x122446, 0xffff00, 0xffff00, 0xffff00, 0xffff00, 0x122446, 0xffff00, 0x122446,
+ 0x122446, 0x122446, 0x122446, 0x122446, 0x122446, 0x122446, 0xffff00, 0x122446,
+ 0x122446, 0x122446, 0x122446, 0x122446, 0x122446, 0x122446, 0xffff00, 0x122446};
+
--- a/main.cpp Wed Feb 15 14:04:02 2017 -0600
+++ b/main.cpp Thu Dec 14 04:56:17 2017 +0000
@@ -1,22 +1,222 @@
#include "mbed.h"
#include "rtos.h"
-
-DigitalOut led1(LED1);
-DigitalOut led2(LED2);
-Thread thread;
-
-void led2_thread() {
+#include <stdint.h>
+#include "NeoStrip.h"
+#include "gt.h"
+#include <iomanip> // setprecision
+#include <sstream> // stringstream
+#include "motordriver.h"
+#define N 64
+#define PATTERNS 3
+
+RawSerial pi(USBTX, USBRX);
+
+NeoStrip strip(p18, N);
+DigitalIn b1(p20); // brightness up
+DigitalIn b2(p19); // brightness down
+DigitalIn b3(p21); // next pattern
+
+Thread t1;
+Thread t2;
+Mutex ulcd_mutex;
+Motor A(p24, p23, p22, 1); // pwm, fwd, rev, can brake
+PwmOut led1(LED1); //indicates when mbed is ready
+PwmOut led2(LED2);
+PwmOut led4(LED4);
+AnalogIn photocell(p16);
+float volatile x = 0; //global variable to change motor speed
+bool test = false;
+int hueToRGB(float h);
+void pattern0();
+void pattern1();
+void pattern2();
+// array of function pointers to the various patterns
+void (*patterns[])(void) = {&pattern0, &pattern1, &pattern2};
+
+//
+void motor() {
+ while(true) {
+ led1 = 1;
+ if (test) {
+ x = .30;
+ A.speed(x);
+ Thread::wait(1200);
+ test = false;
+ A.speed(0);
+ }
+ }
+}
+double volatile bright = 0.05;
+bool test2 = false;
+float value = 0;
+void ambient() {
+ led2 = 1;
while (true) {
- led2 = !led2;
- Thread::wait(1000);
+ if (test2) {
+ value = photocell;
+ if (value < .10) value = .10;
+ if (value > .3) value = .30;
+ bright = abs(value - .10 - .20);
+ if (bright > .25) bright = .25;
+ strip.setBrightness(bright);
+ }
+ }
+}
+int pattern = 0;
+void dev_recv()
+{
+ char temp = 0;
+ while(pi.readable()) {
+ temp = pi.getc();
+ pi.putc(temp);
+ if (temp=='1') {
+ bright = .15;
+ strip.setBrightness(bright);
+ }
+ if (temp=='0' && bright > 0){
+ bright = 0;
+ strip.setBrightness(bright);
+ }
+ if (temp=='=') test = true; // run motor
+ if (temp=='a') test2 = true; // ambient mode on
+ if (temp=='m') test2 = false; // manual mode on
+ if (temp=='+') {
+ bright = bright + .083;
+ if (bright > .25) bright = .25;
+ strip.setBrightness(bright);
+ }
+ if (temp=='-') {
+ bright = bright - .083;
+ if (bright < 0) bright = 0;
+ strip.setBrightness(bright);
+ }
+ if (temp=='p') pattern = (pattern + 1) % 3;
}
}
-
int main() {
- thread.start(led2_thread);
+ pi.baud(9600);
+ pi.attach(&dev_recv, Serial::RxIrq);
+ b1.mode(PullUp);
+ b2.mode(PullUp);
+ b3.mode(PullUp);
+ bool b3o = b3; // old copy of button 3 to poll for changes
+ bright = .05;
+ strip.setBrightness(bright); // set default brightness
+ t1.start(ambient);
+ t2.start(motor);
- while (true) {
- led1 = !led1;
- Thread::wait(500);
+ while (1) {
+ //button 1 increases brightness
+ if (b1 && bright < .25)
+ {
+ bright += 0.005;
+ if (bright > .25)
+ bright = .25;
+ strip.setBrightness(bright);
+ }
+
+ // button 2 decreases brightness
+ if (b2 && bright > 0)
+ {
+ bright -= 0.005;
+ if (bright < 0)
+ bright = 0;
+ strip.setBrightness(bright);
+ }
+
+ // button 3 changes the pattern, only do stuff when its state has changed
+ if (b3 != b3o)
+ {
+ if (b3 && ++pattern == PATTERNS)
+ pattern = 0;
+ b3o = b3;
+ }
+ // run the pattern update function which sets the strip's pixels
+ patterns[pattern]();
+ strip.write();
+ wait_ms(10);
}
}
+
+//// pattern0 displays a static image
+void pattern0()
+{
+ strip.setPixels(0, N, gt_img);
+}
+
+// display a shifting rainbow, all colors have maximum
+// saturation and value, with evenly spaced hue
+void pattern1()
+{
+ static float dh = 360.0 / N;
+ static float x = 0;
+ for (int i = 0; i < N; i++)
+ strip.setPixel(i, hueToRGB((dh * i) - x));
+ x += 1;
+ if (x > 360)
+ x = 0;
+}
+// display a shifting gradient between red and blue
+void pattern2()
+{
+ // offset for each pixel to allow the pattern to move
+ static float x = 0;
+ float r, b, y;
+ for (int i = 0; i < N; i++)
+ {
+ // y is a scaled position between 0 (red) and 1.0 (blue)
+ y = 1.0 * i / (N - 1) + x;
+ if (y > 1)
+ y -= 1;
+ // if on the left half, red is decreasing and blue is increasng
+ if (y < 0.5)
+ {
+ b = 2 * y;
+ r = 1 - b;
+ }
+ // else red is increasing and blue is decreasing
+ else
+ {
+ r = 2 * (y - 0.5);
+ b = 1 - r;
+ }
+ // scale to integers and set the pixel
+ strip.setPixel(i, (uint8_t)(r * 255), 0, (uint8_t)(b * 200));
+ }
+ x += 0.003;
+ if (x > 1)
+ x = 0;
+}
+
+// Converts HSV to RGB with the given hue, assuming
+// maximum saturation and value
+int hueToRGB(float h)
+{
+ // lots of floating point magic from the internet and scratching my head
+ float r, g, b;
+ if (h > 360)
+ h -= 360;
+ if (h < 0)
+ h += 360;
+ int i = (int)(h / 60.0);
+ float f = (h / 60.0) - i;
+ float q = 1 - f;
+ switch (i % 6)
+ {
+ case 0: r = 1; g = f; b = 0; break;
+ case 1: r = q; g = 1; b = 0; break;
+ case 2: r = 0; g = 1; b = f; break;
+ case 3: r = 0; g = q; b = 1; break;
+ case 4: r = f; g = 0; b = 1; break;
+ case 5: r = 1; g = 0; b = q; break;
+ default: r = 0; g = 0; b = 0; break;
+ }
+ // scale to integers and return the packed value
+ uint8_t R = (uint8_t)(r * 255);
+ uint8_t G = (uint8_t)(g * 255);
+ uint8_t B = (uint8_t)(b * 255);
+ return (R << 16) | (G << 8) | B;
+}
+// test code, this demonstrates working motor drivers.
+// full reverse to full stop, dynamicaly brake and switch off.
+