tiva used as i2c in slave mode

My initial comment is that I don't see where the InitConsole() function is called to setup the UART and I2C interface signals.

--Bobby

Hello,

i reconfigure my code but still not working.

tell me the reason 

#include "inc/hw_memmap.h"

/* Defines the common types and macros */
#include "inc/hw_types.h"

/* Defines and Macros for GPIO API */
#include "driverlib/gpio.h"

/* Prototypes for the system control driver */
#include "driverlib/sysctl.h"

#include "driverlib/adc.h"

#include "driverlib/uart.h"

#include "driverlib/interrupt.h"

#include "utils/uartstdio.h"

#include "inc/hw_i2c.h"
#include "driverlib/i2c.h"
#define SLAVE_ADDRESS 0x3B
void
InitConsole(void)
{

SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C0);
GPIOPinConfigure(GPIO_PB2_I2C0SCL);
GPIOPinConfigure(GPIO_PB3_I2C0SDA);
GPIOPinTypeI2CSCL(GPIO_PORTB_BASE, GPIO_PIN_2);
GPIOPinTypeI2C(GPIO_PORTB_BASE, GPIO_PIN_3);

/* Make the UART pins be peripheral controlled. */
GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
//
// Initialize the UART for console I/O.
//
UARTStdioInit(0);
GPIOPinTypeI2C(GPIO_PORTB_BASE, GPIO_PIN_2 | GPIO_PIN_3);

}

int main(void)
{

/*Set the clocking to run at 80Mhz from the crystal of 16MHz using PLL*/
SysCtlClockSet(SYSCTL_SYSDIV_2_5 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_XTAL_16MHZ);
SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C0);
I2CSlaveIntEnable(I2C0_SLAVE_BASE);
InitConsole();
I2CSlaveEnable(I2C0_SLAVE_BASE);
I2CSlaveInit(I2C0_SLAVE_BASE, 0x3B);

I2CSlaveDataPut(I2C0_SLAVE_BASE,'q');

}

reply

Hello Payal,

Which TIVAWare version are you using since in 2.0.1.11577 release I2C0_SLAVE_BASE is not defined.

Secondly, can you read the I2C0 register through the debugger and cross check it against the Register Specification in the data sheet to check if the Slave Module is enabled correctly.

Regards

Amit

i dont know tivaware version.

how can read i2c0 regster ?

when i used "I2CSlaveDataPut(I2C0_SLAVE_BASE,'q');" instruction it write q in i2c register. it is put q in data bus or reg?

and i interface tiva with raspberry pi using i2c.

Hello Payal,

You can open the inc/hw_i2c.h file (as an example) and within the first 40 lines there should be a comment like

// This is part of revision 2.0.1.11577 of the Tiva Firmware Development Package.
This can be used to inform the version of TivaWare

Do you have a debugger connected to the TIVA device? When you call the I2CSlaveDataPut it would write to the Register. However my contention is on the I2C0_SLAVE_BASE define. Can you check what the define value is and when you use the I2CSlaveDataPut what address does it correspond to.

Regards

Amit

This is part of revision 8555 of the Stellaris Firmware Development Package.

in hw_i2c i found this.

would u tell me what i do now?

no i have only tiva launchpad .

Hello Payal,

Can you please remove the following line from your code

GPIOPinTypeI2C(GPIO_PORTB_BASE, GPIO_PIN_2 | GPIO_PIN_3);

Also, can you put a scope probe or a LA probe and see if the Master is sending a I2C Transaction. if yes, then please do attach the waveform.

Regards

Amit