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