acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
TFT_Char_times.ino (4203B)
      1 /*
      2  Font draw speed and flicker test, draws all numbers 0-999 in each font
      3  Average time in milliseconds to draw each character is shown in red
      4  
      5  A total of 2890 characters are drawn in each font then the time per
      6  character printed on screen
      7  
      8   #########################################################################
      9   ###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######
     10   #########################################################################
     11  */
     12 
     13 #include <SPI.h>
     14 
     15 #include <TFT_eSPI.h> // Hardware-specific library
     16 
     17 TFT_eSPI tft = TFT_eSPI();       // Invoke custom library
     18 
     19 unsigned long drawTime = 0;
     20 
     21 void setup(void) {
     22   tft.begin();
     23   tft.setRotation(1);
     24 }
     25 
     26 void loop() {
     27   int xpos;
     28 
     29   //Measure time to clear screen
     30   //drawTime = millis();
     31   tft.fillScreen(TFT_BLACK);
     32   //drawTime = millis() - drawTime;
     33   tft.setTextColor(TFT_WHITE, TFT_BLACK);
     34   //tft.drawNumber(drawTime, 10, 100, 4);
     35   //delay(1000);
     36 
     37   drawTime = millis();
     38 
     39   // Print all numbers from 0 to 999 in font 1 and calculate character draw time
     40   for (int i = 0; i < 1000; i++) {
     41     yield(); tft.drawNumber(i, 100, 80, 1);
     42   }
     43 
     44   drawTime = millis() - drawTime;
     45 
     46   tft.setTextColor(TFT_RED, TFT_BLACK);
     47   xpos = 50;
     48   xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
     49   tft.drawString("ms per character", xpos, 180, 4);
     50   if (drawTime < 100) tft.drawString("Font 1 not loaded!", 50, 210, 4);
     51   
     52   delay(4000);
     53   tft.fillScreen(TFT_BLACK);
     54   tft.setTextColor(TFT_WHITE, TFT_BLACK);
     55     drawTime = millis();
     56 
     57   // Print all numbers from 0 to 999 in font 2 and calculate character draw time
     58   for (int i = 0; i < 1000; i++) {
     59     yield(); tft.drawNumber(i, 100, 80, 2);
     60   }
     61 
     62   drawTime = millis() - drawTime;
     63 
     64   tft.setTextColor(TFT_RED, TFT_BLACK);
     65   xpos = 50;
     66   xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
     67   tft.drawString("ms per character", xpos, 180, 4);
     68   if (drawTime < 200) tft.drawString("Font 2 not loaded!", 50, 210, 4);
     69   
     70   delay(4000);
     71   tft.fillScreen(TFT_BLACK);
     72   tft.setTextColor(TFT_WHITE, TFT_BLACK);
     73     drawTime = millis();
     74 
     75   // Print all numbers from 0 to 999 in font 4 and calculate character draw time
     76   for (int i = 0; i < 1000; i++) {
     77     yield(); tft.drawNumber(i, 100, 80, 4);
     78   }
     79 
     80   drawTime = millis() - drawTime;
     81 
     82   tft.setTextColor(TFT_RED, TFT_BLACK);
     83   xpos = 50;
     84   xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
     85   tft.drawString("ms per character", xpos, 180, 4);
     86   if (drawTime < 200) tft.drawString("Font 4 not loaded!", 50, 210, 4);
     87   
     88   delay(4000);
     89   tft.fillScreen(TFT_BLACK);
     90   tft.setTextColor(TFT_WHITE, TFT_BLACK);
     91     drawTime = millis();
     92 
     93   // Print all numbers from 0 to 999 in font 6 and calculate character draw time
     94   for (int i = 0; i < 1000; i++) {
     95     yield(); tft.drawNumber(i, 100, 80, 6);
     96   }
     97 
     98   drawTime = millis() - drawTime;
     99 
    100   tft.setTextColor(TFT_RED, TFT_BLACK);
    101   xpos = 50;
    102   xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
    103   tft.drawString("ms per character", xpos, 180, 4);
    104   if (drawTime < 200) tft.drawString("Font 6 not loaded!", 50, 210, 4);
    105   
    106   delay(4000);
    107   tft.fillScreen(TFT_BLACK);
    108   tft.setTextColor(TFT_WHITE, TFT_BLACK);
    109     drawTime = millis();
    110 
    111   // Print all numbers from 0 to 999 in font 7 and calculate character draw time
    112   for (int i = 0; i < 1000; i++) {
    113     yield(); tft.drawNumber(i, 100, 80, 7);
    114   }
    115 
    116   drawTime = millis() - drawTime;
    117 
    118   tft.setTextColor(TFT_RED, TFT_BLACK);
    119   xpos = 50;
    120   xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
    121   tft.drawString("ms per character", xpos, 180, 4);
    122   if (drawTime < 200) tft.drawString("Font 7 not loaded!", 50, 210, 4);
    123   
    124   delay(4000);
    125   tft.fillScreen(TFT_BLACK);
    126   tft.setTextColor(TFT_WHITE, TFT_BLACK);
    127     drawTime = millis();
    128 
    129   // Print all numbers from 0 to 999 in font 8 and calculate character draw time
    130   for (int i = 0; i < 1000; i++) {
    131     yield(); tft.drawNumber(i, 100, 80, 8);
    132   }
    133 
    134   drawTime = millis() - drawTime;
    135 
    136   tft.setTextColor(TFT_RED, TFT_BLACK);
    137   xpos = 50;
    138   xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
    139   tft.drawString("ms per character", xpos, 180, 4);
    140   if (drawTime < 200) tft.drawString("Font 8 not loaded!", 50, 210, 4);
    141   
    142   delay(4000);
    143 }
    144 
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