Interfacing 16x2 Lcd with TM4C123GH6PZ

Hello Raski,

Please check the following thread

http://e2e.ti.com/support/microcontrollers/tiva_arm/f/908/p/352472/1237790.aspx#1237790

Regards

Amit

Thank you..i'm not getting some points.In the  below macro defintion,i'm not getting meaning for these register.In which document it has been defined???

#define GPIO_PORTG_DATA_BITS_R ((volatile unsigned long *)0x40026000)
#define GPIO_PORTG_DATA_R (*((volatile unsigned long *)0x400263FC))
#define GPIO_PORTG_DIR_R (*((volatile unsigned long *)0x40026400))
#define GPIO_PORTG_IS_R (*((volatile unsigned long *)0x40026404))
#define GPIO_PORTG_IBE_R (*((volatile unsigned long *)0x40026408))
#define GPIO_PORTG_IEV_R (*((volatile unsigned long *)0x4002640C))
#define GPIO_PORTG_IM_R (*((volatile unsigned long *)0x40026410))
#define GPIO_PORTG_RIS_R (*((volatile unsigned long *)0x40026414))
#define GPIO_PORTG_MIS_R (*((volatile unsigned long *)0x40026418))
#define GPIO_PORTG_ICR_R (*((volatile unsigned long *)0x4002641C))
#define GPIO_PORTG_AFSEL_R (*((volatile unsigned long *)0x40026420))
#define GPIO_PORTG_DR2R_R (*((volatile unsigned long *)0x40026500))
#define GPIO_PORTG_DR4R_R (*((volatile unsigned long *)0x40026504))
#define GPIO_PORTG_DR8R_R (*((volatile unsigned long *)0x40026508))
#define GPIO_PORTG_ODR_R (*((volatile unsigned long *)0x4002650C))
#define GPIO_PORTG_PUR_R (*((volatile unsigned long *)0x40026510))
#define GPIO_PORTG_PDR_R (*((volatile unsigned long *)0x40026514))
#define GPIO_PORTG_SLR_R (*((volatile unsigned long *)0x40026518))
#define GPIO_PORTG_DEN_R (*((volatile unsigned long *)0x4002651C))
#define GPIO_PORTG_LOCK_R (*((volatile unsigned long *)0x40026520))
#define GPIO_PORTG_CR_R (*((volatile unsigned long *)0x40026524))
#define GPIO_PORTG_AMSEL_R (*((volatile unsigned long *)0x40026528))
#define GPIO_PORTG_PCTL_R (*((volatile unsigned long *)0x4002652C))
#define GPIO_PORTG_ADCCTL_R (*((volatile unsigned long *)0x40026530))
#define GPIO_PORTG_DMACTL_R (*((volatile unsigned long *)0x40026534))
#define GPIO_PORTG_SI_R (*((volatile unsigned long *)0x40026538))

Thanks n Reg

Hello Raski,

These are defined in the header file inc/tm4c123gh6pz.h

But I would suggest that instead of using direct address method, use the TIVAWare API's. The could would be more readable and manageable.

Regards

Amit

k..In that link they have used direct register what you sent me previously.

void lcd_DATA_Write(char data)

{

GPIO_PORTB_DATA_R=data;

GPIO_PORTE_DATA_R|=(1<<5); //RS=1

GPIO_PORTE_DATA_R&=~((1<<4)|(1<<3)); //R/W=0, E=0

SysTick_Wait(96); // 6us

GPIO_PORTE_DATA_R|=(1<<3);//E=1

SysTick_Wait(96); // 6us

GPIO_PORTE_DATA_R &=~(1<<3); // E=0 to produce a falling edge

SysTick_Wait(640); // 40us mandatory delay for the command to execute

}

n i didn't find any APIS will support for 16x2 LCd in driver library of tiva ware.

Hello Raski,

The API's to support a 16x2 LCD have to built from the basic API's.

The link that I had sent used Direct Register method (which is something that creates a lot of issues if you are not well familiar with the device functions).

Regards

Amit

k...you meant to say ,i suppose to use gpio APIs for configuring the  16x2 LCD???

Hello Raaki

Yes. That is correct. The forum (and me ) can help in moving over the existing code to API's based implementation, if you could make a start with the basic code.

Regards

Amit

K Thank you..Now i'll try to display some  character on LCD..i'l ask your support if i didn't get the output..

Best Regards

Raaki

HI..i'm not using any APIi function for LCD..Directly i'm writing to register address ..now i can able to display on LCD.i just defined in macros.

#define E 1 /*PH0*/
#define RS 2 /*PH1*/
#define LCDDATA (*((volatile unsigned long *)0x400043FC)) /*PortA*/
#define LCDCMD (*((volatile unsigned long *)0x400273FC))/*portH*/

Regards

Raaki ponki