Function ScaleToRaw

test/touch_xpt2046_test.cpp:20–22

constexpr int kPinCs = 15;

int16_t ScaleToRaw(int16_t value, int16_t max) {
  return static_cast<int16_t>((4096LL * value) / max);
}

struct TouchEmulator {
  testing::TestViewport viewport;