adafruit-mirror/Adafruit_Learning_System_Guides
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

add CPX gizmo support

Browse source
This commit is contained in:
ladyada 2019-04-05 22:44:46 -04:00
parent e3fea33395
commit 85766e34a0
1 changed files with 34 additions and 14 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

48
Hallowing_Googly_Eye/Hallowing_Googly_Eye.ino
View file

@ -17,10 +17,23 @@
// whose radius is the eye radius minus the pupil radius.
#define INNER_RADIUS (EYE_RADIUS - PUPIL_RADIUS)
#define TFT_CS 39 // Hallowing display control pins: chip select
#define TFT_RST 37 // Display reset
#define TFT_DC 38 // Display data/command select
#define TFT_BACKLIGHT 7 // Display backlight pin
#if defined(ADAFRUIT_HALLOWING)
#define TFT_CS 39 // Hallowing display control pins: chip select
#define TFT_RST 37 // Display reset
#define TFT_DC 38 // Display data/command select
#define TFT_BACKLIGHT 7 // Display backlight pin
#define TFT_SPI SPI
#define TFT_PERIPH PERIPH_SPI
Adafruit_LIS3DH accel = Adafruit_LIS3DH();
#elif defined(ARDUINO_SAMD_CIRCUITPLAYGROUND_EXPRESS)
#define TFT_CS A7 // Display select
#define TFT_DC A6 // Display data/command pin
#define TFT_RST -1 // Display reset pin
#define TFT_BACKLIGHT A3
#define TFT_PERIPH PERIPH_SPI1
#define TFT_SPI SPI1
Adafruit_LIS3DH accel(&Wire1);
#endif
// For the sake of math comprehension and simplicity, movement takes place
// in a traditional Cartesian coordinate system (+Y is up), floating point
@ -34,8 +47,8 @@ bool firstFrame = true; // Force full-screen update on initial frame
// Declarations for various Hallowing hardware -- display, accelerometer
// and SPI rate & mode.
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);
Adafruit_LIS3DH accel = Adafruit_LIS3DH();
Adafruit_ST7735 tft = Adafruit_ST7735(&TFT_SPI, TFT_CS, TFT_DC, TFT_RST);
SPISettings settings(12000000, MSBFIRST, SPI_MODE0);
// Declarations related to DMA (direct memory access), which lets us walk
@ -72,31 +85,31 @@ void setup(void) {
int dmac_id;
volatile uint32_t *data_reg;
dma.allocate();
if(&PERIPH_SPI == &sercom0) {
if(&TFT_PERIPH == &sercom0) {
dma.setTrigger(SERCOM0_DMAC_ID_TX);
data_reg = &SERCOM0->SPI.DATA.reg;
#if defined SERCOM1
} else if(&PERIPH_SPI == &sercom1) {
} else if(&TFT_PERIPH == &sercom1) {
dma.setTrigger(SERCOM1_DMAC_ID_TX);
data_reg = &SERCOM1->SPI.DATA.reg;
#endif
#if defined SERCOM2
} else if(&PERIPH_SPI == &sercom2) {
} else if(&TFT_PERIPH == &sercom2) {
dma.setTrigger(SERCOM2_DMAC_ID_TX);
data_reg = &SERCOM2->SPI.DATA.reg;
#endif
#if defined SERCOM3
} else if(&PERIPH_SPI == &sercom3) {
} else if(&TFT_PERIPH == &sercom3) {
dma.setTrigger(SERCOM3_DMAC_ID_TX);
data_reg = &SERCOM3->SPI.DATA.reg;
#endif
#if defined SERCOM4
} else if(&PERIPH_SPI == &sercom4) {
} else if(&TFT_PERIPH == &sercom4) {
dma.setTrigger(SERCOM4_DMAC_ID_TX);
data_reg = &SERCOM4->SPI.DATA.reg;
#endif
#if defined SERCOM5
} else if(&PERIPH_SPI == &sercom5) {
} else if(&TFT_PERIPH == &sercom5) {
dma.setTrigger(SERCOM5_DMAC_ID_TX);
data_reg = &SERCOM5->SPI.DATA.reg;
#endif
@ -134,6 +147,13 @@ void loop(void) {
float ax = accel.y_g * scale, // Horizontal acceleration, pixel units
ay = accel.x_g * scale; // Vertical acceleration "
#if defined(ARDUINO_SAMD_CIRCUITPLAYGROUND_EXPRESS)
// CPX has different accel orientations
float temp = ay;
ay = ax;
ax = -temp;
#endif
// Add scaled accelerometer readings to pupil velocity, store interim
// values in vxNew, vyNew...a little friction prevents infinite bounce.
float vxNew = (vx + ax) * DRAG,
@ -272,7 +292,7 @@ void loop(void) {
if(x2 > 127) x2 = 127;
if(y2 > 127) y2 = 127;
SPI.beginTransaction(settings); // SPI init
TFT_SPI.beginTransaction(settings); // SPI init
digitalWrite(TFT_CS, LOW); // Chip select
tft.setAddrWindow(x1, y1, x2-x1+1, y2-y1+1);
digitalWrite(TFT_CS, LOW); // Re-select after addr function
@ -398,7 +418,7 @@ void loop(void) {
while(dma_busy); // Wait for last DMA transfer to complete
digitalWrite(TFT_CS, HIGH); // Deselect
SPI.endTransaction(); // SPI done
TFT_SPI.endTransaction(); // SPI done
}
void dmaXfer(uint16_t n) { // n = Transfer size in bytes