framework-arduinoteensy-cxx20/libraries/RA8875/Examples/_Energia_IDE/benchmarks/benchmarks.ino

/*
A benchmark test - measure the speed of many drawing functions of RA8875 library at any rotation
Open your serial monitor for results
*/

#include <SPI.h>
#include <RA8875.h>

#define DELAY_BETWEEN 500


#define RA8875_RESET 9//any pin or nothing!

#if defined(NEEDS_SET_MODULE)//Energia, this case is for stellaris/tiva

RA8875 tft = RA8875(3);//select SPI module 3
/*
for module 3 (stellaris)
 SCLK:  PD_0
 MOSI:  PD_3
 MISO:  PD_2
 SS:    PD_1
 */
#endif

void setup() {
  Serial.begin(38400);
  long unsigned debug_start = millis ();
  while (!Serial && ((millis () - debug_start) <= 5000)) ;
  tft.begin(RA8875_800x480);
}

uint8_t rot = 0;
void loop(void) {
  test(rot);
  rot++;
  if (rot > 3) rot = 0;
}