104 lines
2.3 KiB
C++
104 lines
2.3 KiB
C++
/*
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Tests the updated floating point plot function
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The datum is set to the centre of the 320 x 240 screen
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so numbers are printed the middle.
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The last test shows the datum point as a red dot.
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Normally strings are printed relative to the top left corner but this can be
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changed with the setTextDatum() function. The library has #defines for:
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TL_DATUM 0 //Top left
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TC_DATUM 1 //Top centre
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TR_DATUM 2 //Top right
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ML_DATUM 3 //Middle left
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MC_DATUM 4 //Middle centre
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MR_DATUM 5 //Middle right
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BL_DATUM 6 //Bottom left
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BC_DATUM 7 //Bottom centre
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BR_DATUM 8 //Bottom right
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Needs fonts 2 and 6
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Make sure all the display driver and pin comnenctions are correct by
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editting the User_Setup.h file in the TFT_eSPI library folder.
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#########################################################################
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###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######
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#########################################################################
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*/
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#include <TFT_eSPI.h> // Hardware-specific library
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#include <SPI.h>
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TFT_eSPI tft = TFT_eSPI(); // Invoke custom library
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unsigned long drawTime = 0;
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void setup(void) {
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Serial.begin(115200);
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tft.init();
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tft.setRotation(1);
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}
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void loop() {
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char tmp[12];
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tft.fillScreen(TFT_BLACK);
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tft.setTextColor(TFT_WHITE, TFT_BLACK);
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// Datum is middle centre
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tft.setTextDatum(MC_DATUM);
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// Test floating point drawing function:
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// drawFloat(value, precision, x, y, font);
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float test = 67.125;
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tft.drawFloat(test, 4, 160, 120, 6);
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tft.drawString(dtostrf(test,4,4,tmp), 100, 200, 6);
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delay(1000);
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tft.fillScreen(TFT_BLACK);
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test = -0.555555;
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tft.drawFloat(test, 3, 160, 120, 6);
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tft.drawString(dtostrf(test,2,2,tmp), 100, 200, 6);
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delay(1000);
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tft.fillScreen(TFT_BLACK);
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test = 0.123;
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tft.drawFloat(test, 4, 160, 120, 6);
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tft.drawString(dtostrf(test,4,4,tmp), 100, 200, 6);
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delay(1000);
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tft.fillScreen(TFT_BLACK);
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// This does not work at the moment....
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test = 9999999;
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tft.drawFloat(test, 0, 160, 120, 6);
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tft.drawString(dtostrf(test,4,4,tmp), 100, 200, 6);
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delay(1000);
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//Plot the datum for the last number
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tft.fillCircle(160,120,5,TFT_RED);
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tft.setTextDatum(MC_DATUM);
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tft.setTextColor(TFT_BLACK);
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tft.drawString("X", 160, 120, 2);
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delay(4000);
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}
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