Fixed B/W fill color

rpi/examples/hello_epaper/main.cpp

@@ -7,7 +7,8 @@
 #include "../../../src/bb_epaper.h"
 //BBEPAPER bbep(EPD213_104x212); // InkyPHAT 2.13"
 BBEPAPER bbep(EPD295_128x296);
-// BCM GPIO numbers
+//BBEPAPER bbep(EPD154R_152x152);
+// BCM GPIO numbers used by Pimoroni e-paper "HATs"
 #define PIN_DC 22
 #define PIN_RST 27
 #define PIN_BUSY 17
@@ -16,18 +17,20 @@ BBEPAPER bbep(EPD295_128x296);
 
 int main(int argc, const char * argv[]) {
 
-  bbep.initIO(PIN_DC, PIN_RST, PIN_BUSY, PIN_CS, SPI_BUS, 4000000);
-//  bbep.allocBuffer();
+  bbep.initIO(PIN_DC, PIN_RST, PIN_BUSY, PIN_CS, SPI_BUS, 8000000);
+  bbep.allocBuffer(); // draw into RAM first
   bbep.fillScreen(BBEP_WHITE);
   bbep.setRotation(90);
-  bbep.setFont(FONT_16x16);
+  bbep.setFont(FONT_12x16);
   bbep.setTextColor(BBEP_BLACK);
   bbep.drawString("Hello World!", 0, 0);
-//  bbep.writePlane();
-  bbep.refresh(REFRESH_FULL);
-  bbep.sleep(DEEP_SLEEP);
+  bbep.setTextColor(BBEP_RED); // will be black on B/W panels
+  bbep.drawString("In red!", 0, 16);
+  bbep.writePlane(); // push the pixels from our RAM buffer to the e-epaper
+  bbep.refresh(REFRESH_FULL); // do a full refresh (only type possible on B/W/R)
+  bbep.sleep(DEEP_SLEEP); // turn off the epaper power circuit
 
-    return 0;
+  return 0;
 } /* main() */
 
 

src/bb_ep.inl

@@ -1270,6 +1270,12 @@ void bbepFill(BBEPDISP *pBBEP, unsigned char ucData, int iPlane)
         } else if (ucData == BBEP_RED) {
             uc1 = 0x00; uc2 = 0xff;
         }
+    } else { // B/W
+        if (ucData == BBEP_WHITE) {
+            uc1 = uc2 = 0xff;
+	} else {
+            uc1 = uc2 = 0x00;
+	}
     }
     if (pBBEP->ucScreen) { // there's a local framebuffer, use it
         memset(pBBEP->ucScreen, uc1, iSize);

src/bb_ep_gfx.inl

@@ -1090,7 +1090,7 @@ int bbepWriteString(BBEPDISP *pBBEP, int x, int y, char *szMsg, int iSize, int i
                 }
 #endif
             }
-            pBBEP->iCursorX += iLen;
+            x = pBBEP->iCursorX += iLen;
             if (pBBEP->iCursorX >= pBBEP->width-11 && pBBEP->wrap) // word wrap enabled?
             {
                 x = pBBEP->iCursorX = 0; // start at the beginning of the next line