REVO / RA8875

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Fork of RA8875 by David Smart

Diff: RA8875.cpp

Revision:
60:2dfd574f63bd
Parent:
59:fb40aad4efd4
Child:
61:8f3153bf0baa
--- a/RA8875.cpp	Thu Jul 24 00:41:37 2014 +0000
+++ b/RA8875.cpp	Sat Aug 16 19:26:17 2014 +0000
@@ -814,15 +814,19 @@
 RetCode_t RA8875::line(loc_t x1, loc_t y1, loc_t x2, loc_t y2)
 {
     PERFORMANCE_RESET;
-    WriteCommandW(0x91, x1);
-    WriteCommandW(0x93, y1);
-    WriteCommandW(0x95, x2);
-    WriteCommandW(0x97, y2);
-    unsigned char drawCmd = 0x00;       // Line
-    WriteCommand(0x90, drawCmd);
-    WriteCommand(0x90, 0x80 + drawCmd); // Start drawing.
-    while (ReadCommand(0x90) & 0x80)    // await completion.
-        wait_us(POLLWAITuSec);
+    if (x1 == x2 && y1 == y2)
+        pixel(x1, y1);
+    else {
+        WriteCommandW(0x91, x1);
+        WriteCommandW(0x93, y1);
+        WriteCommandW(0x95, x2);
+        WriteCommandW(0x97, y2);
+        unsigned char drawCmd = 0x00;       // Line
+        WriteCommand(0x90, drawCmd);
+        WriteCommand(0x90, 0x80 + drawCmd); // Start drawing.
+        while (ReadCommand(0x90) & 0x80)    // await completion.
+            wait_us(POLLWAITuSec);
+    }
     REGISTERPERFORMANCE(PRF_DRAWLINE);
     return noerror;
 }