TM4C129XNCZAD: Pullups

Did you enable the internal pull-up in your code? They are not enabled by default.

and i configured open drain on the data bus.
i dont see high voltage after this lines of code

GPIOPadConfigSet(GPIO_PORTB_BASE,GPIO_PIN_2,GPIO_STRENGTH_12MA,GPIO_PIN_TYPE_STD);
GPIOPadConfigSet(GPIO_PORTB_BASE,GPIO_PIN_3,GPIO_STRENGTH_12MA,GPIO_PIN_TYPE_OD);
GPIOPadConfigSet(GPIO_PORTG_BASE,GPIO_PIN_0,GPIO_STRENGTH_12MA,GPIO_PIN_TYPE_STD);
GPIOPadConfigSet(GPIO_PORTG_BASE,GPIO_PIN_1,GPIO_STRENGTH_12MA,GPIO_PIN_TYPE_OD);



this is my code:


#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdint.h>
#include "driverlib/rom.h"
#include "driverlib/rom_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/i2c.h"
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_nvic.h"
#include "inc/hw_types.h"
#include "driverlib/timer.h"
#include "driverlib/uart.h"
#include "driverlib/pin_map.h"
//#include "inc/tm4c129xnczad.h"


// PROTOTYPE FUNCTIONS
void I2C0Handler(void);
void I2C1Handler(void);


// main function
int main()
{
volatile uint32_t SysClk=0;
volatile uint32_t RECEVIED_DATA=0;
volatile char ch;
// set clock
SysClk=SysCtlClockFreqSet(SYSCTL_OSC_INT|SYSCTL_USE_PLL|SYSCTL_CFG_VCO_320,16000000);

// Enable i2c peripheral
SysCtlPeripheralDisable(SYSCTL_PERIPH_I2C0);// clk PB2 , data PB3
SysCtlPeripheralReset(SYSCTL_PERIPH_I2C0); // clk PG0 , data PG1
SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C0);
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_I2C0));


SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C1);
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_I2C1));

// ENABLE GPIO PORTS OF THE I2C
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOG);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);

// configure pin muxing for i2c0
GPIOPinConfigure(GPIO_PB2_I2C0SCL);
GPIOPinConfigure(GPIO_PB3_I2C0SDA);

// configure pin muxing for i2c1
GPIOPinConfigure(GPIO_PG0_I2C1SCL);
GPIOPinConfigure(GPIO_PG1_I2C1SDA);

//select i2c function for this pins.
//also configure the pins for i2c
//setting them to open drain
//
//
GPIOPinTypeI2C(GPIO_PORTB_BASE, GPIO_PIN_2);
GPIOPinTypeI2CSCL(GPIO_PORTB_BASE,GPIO_PIN_3);
GPIOPinTypeI2C(GPIO_PORTG_BASE, GPIO_PIN_1);
GPIOPinTypeI2CSCL(GPIO_PORTG_BASE,GPIO_PIN_0);
GPIOPadConfigSet(GPIO_PORTB_BASE,GPIO_PIN_2,GPIO_STRENGTH_12MA,GPIO_PIN_TYPE_STD);
GPIOPadConfigSet(GPIO_PORTB_BASE,GPIO_PIN_3,GPIO_STRENGTH_12MA,GPIO_PIN_TYPE_OD);
GPIOPadConfigSet(GPIO_PORTG_BASE,GPIO_PIN_0,GPIO_STRENGTH_12MA,GPIO_PIN_TYPE_STD);
GPIOPadConfigSet(GPIO_PORTG_BASE,GPIO_PIN_1,GPIO_STRENGTH_12MA,GPIO_PIN_TYPE_OD);

//set i2c clock
I2CMasterInitExpClk(I2C0_BASE,SysCtlClockGet(),false);

// specify slave address to send from the master

I2CMasterSlaveAddrSet(I2C0_BASE,0x3B,false);

I2CSlaveEnable(I2C1_BASE);
I2CSlaveInit(I2C1_BASE,0x3B);



I2CMasterDataPut(I2C0_BASE,'q');

I2CMasterControl(I2C0_BASE,I2C_MASTER_CMD_SINGLE_SEND);




while(I2CMasterBusy(I2C0_BASE))
{

}

RECEVIED_DATA=I2CSlaveDataGet(I2C1_BASE);
ch=(char)RECEVIED_DATA;
return 0;
}