Diff: Adafruit_GP9002.cpp

Revision:

1:09dc95ba8711

Parent:

0:e760d4cfabe4

Child:

2:ecf13e85f0fa

--- a/Adafruit_GP9002.cpp	Sat May 07 12:53:09 2016 +0000
+++ b/Adafruit_GP9002.cpp	Sun May 08 13:47:58 2016 +0000
@@ -83,18 +83,21 @@
   dcpinmask = digitalPinToBitMask(_dc);
   */
 
+  command(GP9002_DISPLAYSOFF);
+ // command(GP9002_DISPLAY1ON); //defer till display clear
   command(GP9002_DISPLAY);
-  dataWrite(GP9002_DISPLAY_MONOCHROME);
+  dataWrite(GP9002_DISPLAY_GRAYSCALE);
   command(GP9002_LOWERADDR1);
   dataWrite(0x0);
   command(GP9002_HIGHERADDR1);
   dataWrite(0x0);
-  command(GP9002_LOWERADDR2);
-  dataWrite(0x0);
-  command(GP9002_HIGHERADDR2);
-  dataWrite(0x4);
-  command(GP9002_OR);
+//  command(GP9002_LOWERADDR2);
+//  dataWrite(0x0);
+ // command(GP9002_HIGHERADDR2);
+//  dataWrite(0x4);
+ // command(GP9002_OR);  //contradicted by display1on, so no
   command(GP9002_CLEARSCREEN);
+  wait_us(500);
   command(GP9002_DISPLAY1ON);
 
   // hold the address so we can read and then write
@@ -112,21 +115,21 @@
   //drawLine(x, orig_y, x, orig_y+h, color); return;
 
   while (h) {
-    if ((h >= 8) && ((orig_y) % 8 == 0)) 
+    if ((h >= 4) && ((orig_y) % 4 == 0)) 
       break;
     drawPixel(x, orig_y, color);
     orig_y++;
     h--;
   }
 
-  if (h >= 8) {
+  if (h >= 4) {
       // calculate addr
       uint16_t addr = 0;
-      addr = x*8;
+      addr = x*16;
   //    uint16_t y = orig_y+h-8;
        uint16_t y=orig_y;
   //    y = 63 - y;                 //why?
-      addr += y/8;
+      addr += y/4;
 
   //    Serial.println(addr, HEX);  ///debug line ?
       command(GP9002_ADDRINCR);
@@ -136,14 +139,14 @@
       dataWrite(addr >> 8);
       command(GP9002_DATAWRITE);
 
-      while (h >= 8) {
+      while (h >= 4) {
 	// draw 8 pixels at once!
 	if (color) 
-	  dataWrite(0xFF);
+	  dataWrite(0b01010101 * (color & 3));
 	else 
 	  dataWrite(0x00);
-	h -= 8;
-	orig_y += 8;
+	h -= 4;
+	orig_y += 4;
       }
   }
   while (h+1) {
@@ -163,9 +166,9 @@
   
   // calculate addr
   uint16_t addr = 0;
-  addr = x*8;
+  addr = x*16;
  // y = 63 - y;                //why
-  addr += y/8;
+  addr += y/4;
 
   command(GP9002_ADDRHELD);
   command(GP9002_ADDRL);
@@ -175,19 +178,19 @@
   command(GP9002_DATAREAD);
   dataRead();
   p = dataRead();
-
+  y=0xc0>>((y & 3) <<1);
+  color*=0b01010101;
   //Serial.println(p, HEX);
+  p &= ~y;
 
-  if (color)
-    p |= (1 << (7-(y % 8)));
-  else
-    p &= ~(1 << (7-(y % 8)));
+  p |= color&y;
+  
   command(GP9002_DATAWRITE);
   dataWrite(p);
 }
 
   
-
+/* forbidden
 void Adafruit_GP9002::invert(bool i) {
   // This is kinda clumsy but it does work
   // fill the opposite screen with all on pixels so we can invert!
@@ -216,6 +219,7 @@
   command(GP9002_ADDRHELD);
 
 }
+*/
 /*
 void Adafruit_GP9002::slowSPIwrite(uint8_t d) {
  for (uint8_t i=0; i<8; i++) {
@@ -332,7 +336,7 @@
 void Adafruit_GP9002::clearDisplay(void) {
   command(GP9002_CLEARSCREEN);
 
-  wait_ms(1);
+  wait_us(500);
 }
 
 void Adafruit_GP9002::displayOff(void) {