Simple 8x8 LED Matrix controller which interfaces with a Processing GUI over serial to display sketches
Dependencies: Multi_WS2811 mbed
Fork of Multi_WS2811_test by
main.cpp
- Committer:
- antoniorohit
- Date:
- 2014-11-14
- Revision:
- 32:7b60b9add4b5
- Parent:
- 30:52e9205a8059
- Child:
- 33:7973b70d4fab
File content as of revision 32:7b60b9add4b5:
#include "mbed.h" #include "WS2811.h" #include "Colors.h" #include "TSISensor.h" #include "MMA8451Q.h" #define MMA8451_I2C_ADDRESS (0x1d<<1) // per LED: 3 * 20 mA = 60mA max // 60 LEDs: 60 * 60mA = 3600 mA max // 120 LEDs: 7200 mA max unsigned const nLEDs = MAX_LEDS_PER_STRIP; // I/O pin usage // PTD0 TPM0 CH0 monitor // PTD1 TPM0 CH1 monitor // PTD2 data output // PTD3 debug output unsigned const DATA_OUT_PIN1 = 2; // PTD2 unsigned const DATA_OUT_PIN2 = 3; // PTD3 Serial pc(USBTX, USBRX); Timer timeRunning; TSISensor touchSensor; MMA8451Q acc(PTE25, PTE24, MMA8451_I2C_ADDRESS); PwmOut rled(LED_RED); PwmOut gled(LED_GREEN); // LED_BLUE is on PTD1 float touchPercentage; unsigned frames; float const minBrite = 0.2; float const maxBrite = 0.5; float brite; void readTouchSensor() { touchPercentage *= 0.9; touchPercentage += touchSensor.readPercentage() * 0.1; brite = minBrite + (maxBrite - minBrite) * touchPercentage; } // @brief sets different colors in each of the LEDs of a strip // @param strip the light strip // @param sat saturation, 0.0 - 1.0 // @param brite brightness, 0.0 - 1.0 // @param hueShift shift, 0.0 - 1.0 is equivalent to 0 - 360 degrees static void showRainbow(WS2811 &strip, float sat, float brite, float hueShift) { unsigned nLEDs = strip.numPixels(); for (unsigned i = 0; i < nLEDs; i++) { uint8_t r, g, b; float hue = ((float)i / (float)nLEDs) + hueShift; HSBtoRGB(hue, sat, brite, &r, &g, &b); strip.setPixelColor(i, r, g, b); } strip.show(); } static void clearScreen(WS2811 &strip) { unsigned nLEDs = strip.numPixels(); for (unsigned i = 0; i < nLEDs; i++) { strip.setPixelColor(i, 0, 0, 0); } strip.show(); } int main(void) { pc.baud(9600); WS2811 lightStrip1(nLEDs, DATA_OUT_PIN1); WS2811 lightStrip2(nLEDs, DATA_OUT_PIN2); lightStrip1.begin(); lightStrip2.begin(); rled = 1.0; gled = 1.0; float sat = 1.0; timeRunning.start(); uint8_t q = 0; char char_buff[6]; for (;;) { if(pc.readable()){ if(pc.getc()==255){ while(q < 6){ while(!pc.readable()); char_buff[q] = pc.getc(); pc.putc(char_buff[q]); if(char_buff[q] == 254) break; q++; } if(q >= 4){ lightStrip1.setPixelColor(int(char_buff[0])+8*char_buff[1], int(char_buff[2]), int(char_buff[3]), int(char_buff[4])); lightStrip1.show(); } else{ clearScreen(lightStrip1); } q = 0; WS2811::startDMA(); } } frames ++; } }