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9 tile screen working with one image space, platform for development
main.cpp
- Committer:
- rsavitski
- Date:
- 2012-03-06
- Revision:
- 0:8b26631e8c70
File content as of revision 0:8b26631e8c70:
#include "mbed.h" #include "ledScreen.h" // screen instance ledScreen screen; // sin lookup table and related functions unsigned char sinlut[256]; void initSinLut() { for (int i=0; i<256; i++) sinlut[i] = cos((float)i / 256.0 * (3.14159265 * 2))*127 + 128; } inline unsigned char lut_sin(int x) { return (x>0)?sinlut[x%256]:sinlut[(-x)%256]; } // Example frame makes: //rainbow void makeFrame1(unsigned char* data) { static int time=0; time++; // override data with a intensity gradient test pattern for (int x=0; x<3*16; x++) { for (int y=0; y<48; y++) { int i = (x + y*(16*3)) * 3; // figure out the memory location data[i] = lut_sin((x+y)*255/48+(time/2)%256); //(sin((float)(x+time)/15.0)+1.0)*128 ; // red data[i+1] = lut_sin(((x+y)*255/48+(time/2)+ 85)%256); //(sin((float)(x+time)/15.0)+1.0)*128 ; // red data[i+2] = lut_sin(((x+y)*255/48+(time/2)+170)%256); //(sin((float)(x+time)/15.0)+1.0)*128 ; // red } } } //cool lines void makeFrame2(unsigned char* data) { static int time=0; time++; // override data with a intensity gradient test pattern for (int x=0; x<3*16; x++) { for (int y=0; y<16; y++) { int i = (x + y*(16*3)) * 3; // figure out the memory location data[i] = lut_sin(x*255/48+(time)%256 + y*16); //(sin((float)(x+time)/15.0)+1.0)*128 ; // red data[i+1] = lut_sin(x*255/48+(time)%256 + y*16 + 85); //(sin((float)(x+time)/15.0)+1.0)*128 ; // red data[i+2] = lut_sin(x*255/48+(time)%256 + y*16 + 170); //(sin((float)(x+time)/15.0)+1.0)*128 ; // red } } } // static gradients void makeFrame3(unsigned char* data) { static int time=0; time++; // override data with a intensity gradient test pattern for (int x=0; x<3*16; x++) { for (int y=0; y<16; y++) { int i = (x + y*(16*3)) * 3; // figure out the memory location data[i] = x*256/48; //(sin((float)(x+time)/15.0)+1.0)*128 ; // red data[i+1] = 0; // green data[i+2] = y*256/16; //(i/3)%256 ; // blue } } } void makeFrame33(unsigned char* data) { static int time=0; time++; for (int x=0; x<3*16; x++) { for (int y=0; y<48; y++) { int i = (x + y*(16*3)) * 3; // figure out the memory location data[i] = x*256/48; //(sin((float)(x+time)/15.0)+1.0)*128 ; // red data[i+1] = 0; // green data[i+2] = y*256/48; //(i/3)%256 ; // blue } } } int main() { // framebuffer on client side unsigned char imageSource[256*3*3*3] = { 0 }; // prepare sin lookup table (optional) initSinLut(); // start the screen output, which will keep outputting the frames that are in its internal buffer (updated via .transformFrame) screen.start(); while (1) { makeFrame1(imageSource); // prepare framebuffer with current frame screen.transformFrame(imageSource); // write framebuffer to output framebuffer wait_ms(0.5); // slow down the framerate (optional) } }