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Send multiple bytes in case of updating epaper #375

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Send multiple bytes in case of updating epaper #375

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62 changes: 31 additions & 31 deletions E-paper_Separate_Program/4inch_e-Paper_E/RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_4in0e.c
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Original file line number Diff line number Diff line change
Expand Up @@ -63,11 +63,30 @@ function : send data
parameter:
Data : Write data
******************************************************************************/
static void EPD_4IN0E_SendDataBurst(UBYTE *Data, unsigned Datac)
{
DEV_Digital_Write(EPD_DC_PIN, 1);
DEV_Digital_Write(EPD_CS_PIN, 0);
unsigned i;
for(i=0;i<Datac;++i) {
DEV_SPI_WriteByte(Data[i]);
}
DEV_Digital_Write(EPD_CS_PIN, 1);
}

static void EPD_4IN0E_SendData(UBYTE Data)
{
EPD_4IN0E_SendDataBurst(&Data, 1);
}

static void EPD_4IN0E_SendDataDuplicates(UBYTE Data, unsigned datac)
{
DEV_Digital_Write(EPD_DC_PIN, 1);
DEV_Digital_Write(EPD_CS_PIN, 0);
DEV_SPI_WriteByte(Data);
unsigned i;
for(i=0;i<datac;++i) {
DEV_SPI_WriteByte(Data);
}
DEV_Digital_Write(EPD_CS_PIN, 1);
}

Expand All @@ -91,7 +110,6 @@ function : Turn On Display
******************************************************************************/
static void EPD_4IN0E_TurnOnDisplay(void)
{

EPD_4IN0E_SendCommand(0x04); // POWER_ON
EPD_4IN0E_ReadBusyH();
DEV_Delay_ms(200);
Expand Down Expand Up @@ -198,11 +216,7 @@ void EPD_4IN0E_Clear(UBYTE color)
Height = EPD_4IN0E_HEIGHT;

EPD_4IN0E_SendCommand(0x10);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN0E_SendData((color<<4)|color);
}
}
EPD_4IN0E_SendDataDuplicates((color<<4)|color, Width*Height);

EPD_4IN0E_TurnOnDisplay();
}
Expand All @@ -213,15 +227,13 @@ function : show 7 kind of color block
******************************************************************************/
void EPD_4IN0E_Show7Block(void)
{
unsigned long j, k;
unsigned long k;
unsigned char const Color_seven[6] =
{EPD_4IN0E_BLACK, EPD_4IN0E_YELLOW, EPD_4IN0E_RED, EPD_4IN0E_BLUE, EPD_4IN0E_GREEN, EPD_4IN0E_WHITE};

EPD_4IN0E_SendCommand(0x10);
for(k = 0 ; k < 6; k ++) {
for(j = 0 ; j < 20000; j ++) {
EPD_4IN0E_SendData((Color_seven[k]<<4) |Color_seven[k]);
}
EPD_4IN0E_SendDataDuplicates((Color_seven[k]<<4) |Color_seven[k], 20000);
}
EPD_4IN0E_TurnOnDisplay();
}
Expand All @@ -233,28 +245,19 @@ void EPD_4IN0E_Show(void)
{EPD_4IN0E_BLACK, EPD_4IN0E_YELLOW, EPD_4IN0E_RED, EPD_4IN0E_BLUE, EPD_4IN0E_GREEN, EPD_4IN0E_WHITE};

UWORD Width, Height;
Width = (EPD_4IN0E_WIDTH % 2 == 0)? (EPD_4IN0E_WIDTH / 2 ): (EPD_4IN0E_WIDTH / 2 + 1);
Width = (EPD_4IN0E_WIDTH % 2 == 0)? (EPD_4IN0E_WIDTH / 2): (EPD_4IN0E_WIDTH / 2 + 1);
Height = EPD_4IN0E_HEIGHT;
k = 0;
o = 0;

EPD_4IN0E_SendCommand(0x10);
for (UWORD j = 0; j < Height; j++) {
if((j > 10) && (j<50))
for (UWORD i = 0; i < Width; i++) {
EPD_4IN0E_SendData((Color_seven[0]<<4) |Color_seven[0]);
}
else if(o < Height/2)
for (UWORD i = 0; i < Width; i++) {
EPD_4IN0E_SendData((Color_seven[0]<<4) |Color_seven[0]);
}

if(((j > 10) && (j<50))
|| o < Height/2)
EPD_4IN0E_SendDataDuplicates((Color_seven[0]<<4) |Color_seven[0], Width);
else
{
for (UWORD i = 0; i < Width; i++) {
EPD_4IN0E_SendData((Color_seven[k]<<4) |Color_seven[k]);

}
EPD_4IN0E_SendDataDuplicates((Color_seven[k]<<4) |Color_seven[k], Width);
k++ ;
if(k >= 6)
k = 0;
Expand All @@ -274,15 +277,12 @@ function : Sends the image buffer in RAM to e-Paper and displays
void EPD_4IN0E_Display(UBYTE *Image)
{
UWORD Width, Height;
Width = (EPD_4IN0E_WIDTH % 2 == 0)? (EPD_4IN0E_WIDTH / 2 ): (EPD_4IN0E_WIDTH / 2 + 1);
Width = (EPD_4IN0E_WIDTH % 2 == 0)? (EPD_4IN0E_WIDTH / 2): (EPD_4IN0E_WIDTH / 2 + 1);
Height = EPD_4IN0E_HEIGHT;

EPD_4IN0E_SendCommand(0x10);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN0E_SendData(Image[i + j * Width]);
}
}
EPD_4IN0E_SendDataBurst(Image, Width * Height);

EPD_4IN0E_TurnOnDisplay();
}

Expand Down