Hello all,
I have an LCD module TM240320B9NFWUGWC and it has inbuilt ILI9325 controller. MPU-Interface Mode is through 8-bit parallel interface.
I'm trying to read its device code but its not working, I always getting 0x0000. If any body can help on this, that will be very appreciated.
My code is as follow ------------------------------------------------------------------ void TSLCDInit(void) //initial LCD { TSLCDOutIns(TS_INS_START_OSC); driver_code = TSLCDInDat(); if (driver_code == 0x9320) //ILI9320 { TSLCDInit9320(); } else if (driver_code == 0x9325) //ILI9325 { TSLCDInit9325(); } } -------------------------------------------------------------------- But I am getting driver_code = 0x0000
And my write command, write data and read data as follow
void TSLCDOutIns(unsigned short ins) //write instruction to LCD { LPC_PINCON->PINSEL0 &= ~(0xFFFF<<4); LPC_GPIO0->FIODIR |= LCD_DATA_MASK;
LCD_CS_LOW(); LCD_RS_LOW(); LCD_RD_HIGH();
LCD_WR_HIGH(); LCD_WR_LOW(); delay_ms(1); LPC_GPIO0->FIOPIN &= ~LCD_DATA_MASK; LCD_WR_HIGH();
LCD_WR_LOW(); delay_ms(1); LPC_GPIO0->FIOPIN |= ins<<2; LCD_WR_HIGH();
delay_ms(1); }
void TSLCDOutDat(unsigned short dat) //write data to LCD { LCD_RS_HIGH(); LCD_RD_HIGH(); LCD_WR_LOW();
LPC_PINCON->PINSEL0 &= ~(0xFFFF<<4); LPC_GPIO0->FIODIR |= LCD_DATA_MASK; LPC_GPIO0->FIOCLR = LCD_DATA_MASK; LPC_GPIO0->FIOSET = (dat >> 8 ) << 2;
LCD_CS_LOW(); LCD_CS_HIGH();
LPC_GPIO0->FIOCLR = LCD_DATA_MASK; LPC_GPIO0->FIOSET = dat << 2;
LCD_CS_LOW(); LCD_CS_HIGH(); LCD_WR_HIGH();
LPC_PINCON->PINSEL0 &= ~(0xFFFF<<4); LPC_GPIO0->FIODIR &= ~LCD_DATA_MASK; }
unsigned short TSLCDInDat(void) //read data from LCD { unsigned short retval = 0;
LPC_PINCON->PINSEL0 &= ~(0xFFFF<<4); LPC_GPIO0->FIODIR &= ~LCD_DATA_MASK;
LCD_CS_LOW(); LCD_RS_HIGH();
LCD_RD_LOW(); delay_ms(1); retval = (LPC_GPIO0->FIOPIN & LCD_DATA_MASK); LCD_RD_HIGH(); delay_ms(1);
LCD_RD_LOW(); delay_ms(1); retval = (retval << 8 ) | (LPC_GPIO0->FIOPIN & LCD_DATA_MASK); LCD_RD_HIGH(); delay_ms(1);
LCD_CS_HIGH();
return retval; }
Note: For data lines I am using P0.2 to P0.9 and that's why I am shifting 'ins' and 'dat' left by 2.
-Prakash 9886545216
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