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Kyle Isom
2025-04-10 23:12:01 -07:00
parent 25199750cf
commit 8ecbfeab1e
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151
picocalc/libraries/TFT_eSPI/examples/480 x 320/TFT_Char_times/TFT_Char_times.ino Normal file
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/*
Font draw speed and flicker test, draws all numbers 0-999 in each font
Average time in milliseconds to draw each character is shown in red
A total of 2890 characters are drawn in each font then the time per
character printed on screen
#########################################################################
###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######
#########################################################################
*/
#include <SPI.h>
#include <TFT_eSPI.h> // Hardware-specific library
TFT_eSPI tft = TFT_eSPI(); // Invoke custom library
unsigned long drawTime = 0;
void setup(void) {
tft.begin();
tft.setRotation(1);
}
void loop() {
int xpos;
//Measure time to clear screen
//drawTime = millis();
tft.fillScreen(TFT_BLACK);
//drawTime = millis() - drawTime;
tft.setTextColor(TFT_WHITE, TFT_BLACK);
//tft.drawNumber(drawTime, 10, 100, 4);
//delay(1000);
drawTime = millis();
// Print all numbers from 0 to 999 in font 1 and calculate character draw time
for (int i = 0; i < 1000; i++) {
yield(); tft.drawNumber(i, 100, 80, 1);
}
drawTime = millis() - drawTime;
tft.setTextColor(TFT_RED, TFT_BLACK);
xpos = 50;
xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
tft.drawString("ms per character", xpos, 180, 4);
if (drawTime < 100) tft.drawString("Font 1 not loaded!", 50, 210, 4);
delay(4000);
tft.fillScreen(TFT_BLACK);
tft.setTextColor(TFT_WHITE, TFT_BLACK);
drawTime = millis();
// Print all numbers from 0 to 999 in font 2 and calculate character draw time
for (int i = 0; i < 1000; i++) {
yield(); tft.drawNumber(i, 100, 80, 2);
}
drawTime = millis() - drawTime;
tft.setTextColor(TFT_RED, TFT_BLACK);
xpos = 50;
xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
tft.drawString("ms per character", xpos, 180, 4);
if (drawTime < 200) tft.drawString("Font 2 not loaded!", 50, 210, 4);
delay(4000);
tft.fillScreen(TFT_BLACK);
tft.setTextColor(TFT_WHITE, TFT_BLACK);
drawTime = millis();
// Print all numbers from 0 to 999 in font 4 and calculate character draw time
for (int i = 0; i < 1000; i++) {
yield(); tft.drawNumber(i, 100, 80, 4);
}
drawTime = millis() - drawTime;
tft.setTextColor(TFT_RED, TFT_BLACK);
xpos = 50;
xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
tft.drawString("ms per character", xpos, 180, 4);
if (drawTime < 200) tft.drawString("Font 4 not loaded!", 50, 210, 4);
delay(4000);
tft.fillScreen(TFT_BLACK);
tft.setTextColor(TFT_WHITE, TFT_BLACK);
drawTime = millis();
// Print all numbers from 0 to 999 in font 6 and calculate character draw time
for (int i = 0; i < 1000; i++) {
yield(); tft.drawNumber(i, 100, 80, 6);
}
drawTime = millis() - drawTime;
tft.setTextColor(TFT_RED, TFT_BLACK);
xpos = 50;
xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
tft.drawString("ms per character", xpos, 180, 4);
if (drawTime < 200) tft.drawString("Font 6 not loaded!", 50, 210, 4);
delay(4000);
tft.fillScreen(TFT_BLACK);
tft.setTextColor(TFT_WHITE, TFT_BLACK);
drawTime = millis();
// Print all numbers from 0 to 999 in font 7 and calculate character draw time
for (int i = 0; i < 1000; i++) {
yield(); tft.drawNumber(i, 100, 80, 7);
}
drawTime = millis() - drawTime;
tft.setTextColor(TFT_RED, TFT_BLACK);
xpos = 50;
xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
tft.drawString("ms per character", xpos, 180, 4);
if (drawTime < 200) tft.drawString("Font 7 not loaded!", 50, 210, 4);
delay(4000);
tft.fillScreen(TFT_BLACK);
tft.setTextColor(TFT_WHITE, TFT_BLACK);
drawTime = millis();
// Print all numbers from 0 to 999 in font 8 and calculate character draw time
for (int i = 0; i < 1000; i++) {
yield(); tft.drawNumber(i, 100, 80, 8);
}
drawTime = millis() - drawTime;
tft.setTextColor(TFT_RED, TFT_BLACK);
xpos = 50;
xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
tft.drawString("ms per character", xpos, 180, 4);
if (drawTime < 200) tft.drawString("Font 8 not loaded!", 50, 210, 4);
delay(4000);
}