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Hi,
Im having huge trouble trying to interface the newhaven LCD display which has a ST7565P LCD driver to the PSOC 4.
http://www.newhavendisplay.com/nhdc12864a1zfsbfbwhtt-p-3895.html
I have an SPI block and 3 output pins on my "top design"
3 output pins - Reset, A0, CS
On the SPI, i used the mosi (SCL) to connect to the SCL on the LCD, while miso(SDA) to the data pin on the LCD
I have an initialization code that runs like this... I basically took this off newhaven's website..
int main()
{
/* Initialization */
XBEE_Start(); //starts the Xbee UART
SPI_Start();
LCD_Initialization();
...................
}
void comm_out(unsigned char j) //Command Output Serial Interface
{
unsigned int n;
CS_Write(0);
A0_Write(0); //A0 = Command
for(n=0; n<8; n++){
j <<=1;
SPI_mosi_s_Write(0);
SPI_miso_s_Write(j);
CyDelayUs(1);
SPI_mosi_s_Write(1);
}
CS_Write(1);
}
void LCD_Initialization(void)
{
comm_out(0xA0); //RAM->SEG output = normal
comm_out(0xAE); //Display OFF
comm_out(0xC0); //COM scan direction = normal
comm_out(0xA2); //1/9 bias
comm_out(0x2F); //power control set
comm_out(0x21); //resistor ratio set
comm_out(0x81); //Electronic volume command (set contrast)
comm_out(0x2F); //Electronic volume value (contrast value)
}
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I would recommend you take a look at the SPI examples in PSOC
Creator, on start page, "Find Example Project" link.
Then adapt the command and init code you have to send in the
example approach. Make sure you meet and startup/init timing the
display has from power up.
Regards, Dana.
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