From aa804d5ac60a29acdb864645c0cff7ee953c9cec Mon Sep 17 00:00:00 2001
From: IOsetting <iosetting@outlook.com>
Date: Sun, 12 Mar 2023 02:36:33 +0800
Subject: [PATCH] refactor: epd lib enhancements

---
 Libraries/EPaper/Lib/EPD_1in54.c | 44 ++++++++++++++++++++++----------
 1 file changed, 30 insertions(+), 14 deletions(-)

diff --git a/Libraries/EPaper/Lib/EPD_1in54.c b/Libraries/EPaper/Lib/EPD_1in54.c
index 01c88b0..033b054 100644
--- a/Libraries/EPaper/Lib/EPD_1in54.c
+++ b/Libraries/EPaper/Lib/EPD_1in54.c
@@ -143,6 +143,28 @@ static void EPD_1IN54_SendData(UBYTE Data)
     EPD_Digital_Write(EPD_CS_PIN, 1);
 }
 
+static void EPD_1IN54_SendDataArray(const UBYTE *Data, UWORD len)
+{
+    EPD_Digital_Write(EPD_DC_PIN, 1);
+    EPD_Digital_Write(EPD_CS_PIN, 0);
+    while (len--)
+    {
+        EPD_SPI_WriteByte(*Data++);
+    }
+    EPD_Digital_Write(EPD_CS_PIN, 1);
+}
+
+static void EPD_1IN54_SendDataBurst(const UBYTE Data, UWORD len)
+{
+    EPD_Digital_Write(EPD_DC_PIN, 1);
+    EPD_Digital_Write(EPD_CS_PIN, 0);
+    while (len--)
+    {
+        EPD_SPI_WriteByte(Data);
+    }
+    EPD_Digital_Write(EPD_CS_PIN, 1);
+}
+
 /******************************************************************************
 function :	Wait until the busy_pin goes LOW
 parameter:
@@ -235,13 +257,9 @@ void EPD_1IN54_Init(UBYTE Mode)
     //set the look-up table register
     EPD_1IN54_SendCommand(0x32);
     if(Mode == EPD_1IN54_FULL){
-        for (UWORD i = 0; i < 30; i++) {
-                EPD_1IN54_SendData(EPD_1IN54_lut_full_update[i]);
-        }
+        EPD_1IN54_SendDataArray(EPD_1IN54_lut_full_update, 30);
     }else if(Mode == EPD_1IN54_PART){
-        for (UWORD i = 0; i < 30; i++) {
-                EPD_1IN54_SendData(EPD_1IN54_lut_partial_update[i]);
-        }
+        EPD_1IN54_SendDataArray(EPD_1IN54_lut_partial_update, 30);
     }else{
         EPD_Printf("error, the Mode is EPD_1IN54_FULL or EPD_1IN54_PART");
     }
@@ -261,9 +279,7 @@ void EPD_1IN54_Clear(void)
     for (UWORD j = 0; j < Height; j++) {
         EPD_1IN54_SetCursor(0, j);
         EPD_1IN54_SendCommand(0x24);
-        for (UWORD i = 0; i < Width; i++) {
-            EPD_1IN54_SendData(0XFF);
-        }
+        EPD_1IN54_SendDataBurst(0xFF, Width);
     }
     EPD_1IN54_TurnOnDisplay();
 }
@@ -278,16 +294,16 @@ void EPD_1IN54_Display(UBYTE *Image)
     Width = (EPD_1IN54_WIDTH % 8 == 0)? (EPD_1IN54_WIDTH / 8 ): (EPD_1IN54_WIDTH / 8 + 1);
     Height = EPD_1IN54_HEIGHT;
 
-    UDOUBLE Addr = 0;
     // UDOUBLE Offset = ImageName;
     EPD_1IN54_SetWindow(0, 0, EPD_1IN54_WIDTH, EPD_1IN54_HEIGHT);
     for (UWORD j = 0; j < Height; j++) {
         EPD_1IN54_SetCursor(0, j);
         EPD_1IN54_SendCommand(0x24);
-        for (UWORD i = 0; i < Width; i++) {
-            Addr = i + j * Width;
-            EPD_1IN54_SendData(Image[Addr]);
-        }
+        EPD_1IN54_SendDataArray(Image + (j * Width), Width);
+        // for (UWORD i = 0; i < Width; i++) {
+        //     Addr = i + j * Width;
+        //     EPD_1IN54_SendData(Image[Addr]);
+        // }
     }
     EPD_1IN54_TurnOnDisplay();
 }