Commit 567cf679 authored by Birte Kristina Friesel's avatar Birte Kristina Friesel
Browse files

pervasive_aurora_mb: add partial update support

parent 399c5385

include/driver/pervasive_aurora_mb.h

+1 −1
Original line number Diff line number Diff line
@@ -20,7 +20,7 @@ class PervasiveAuroraMb { 
		void setup();

		void powerOn();

		void initialize(signed char temperature = 20);

		void sendImage(unsigned char *frame);

		void sendImage(unsigned char *frame, unsigned int x = 0, unsigned int y = 0, unsigned int w = 0, unsigned int h = 0);

		void sendUpdate();

		void powerOff();

};

src/driver/pervasive_aurora_mb.cc

+25 −3
Original line number Diff line number Diff line
@@ -56,7 +56,7 @@ void PervasiveAuroraMb::initialize(signed char temperature) 
	spiWrite(0xe3, (const unsigned char[]){0x88}, 1);

}



void PervasiveAuroraMb::sendImage(unsigned char *frame)

void PervasiveAuroraMb::sendImage(unsigned char *frame, unsigned int x, unsigned int y, unsigned int w, unsigned int h)

{

	unsigned char null_int[2] = {0x00, 0x00};

	spiWrite(0x10, 0, 0);
@@ -71,9 +71,31 @@ void PervasiveAuroraMb::sendImage(unsigned char *frame) 
	 */

	spiWrite(0x13, 0, 0);

	gpio.write(PERVASIVE_AURORA_CS_PIN, 0);

	if (w == 0 || h == 0) {

		for (unsigned int i = 0; i < 300*(400/16); i++) {

			spi.xmit(2, null_int, 0, frame);

		}

	} else {

		unsigned int y1_mod = y % 8;

		unsigned int y2_mod = (y + h) % 8;

		for (unsigned int x_pos = 0; x_pos < 300; x_pos++) {

			for (unsigned int y_pos = 0; y_pos < 400/8; y_pos++) {

				if (x_pos < x || x_pos >= x+w || y_pos < y/8 || y_pos > (y+h)/8) {

					// outside of update area

					null_int[0] = 0xff;

				} else  if (y/8 == (y+h)/8) {

					null_int[0] = (0xff << y2_mod) | (0xff >> (8-y1_mod));

				} else if (y_pos == y/8) {

					null_int[0] = 0xff << y1_mod;

				} else if (y_pos == (y+h)/8) {

					null_int[0] = 0xff >> (8-y2_mod);

				} else {

					null_int[0] = 0x00;

				}

				spi.xmit(1, null_int, 0, frame);

			}

		}

	}

	gpio.write(PERVASIVE_AURORA_CS_PIN, 1);

}