S32K3X4EVB-Q257 LPI2C_1 PTF7, PTF8 can't output I2C signal but PTC6, PTC7 worked fine

[Neil1210]

When I configured PTF7 and PTF8 (LPI2C_1) as I2C master on S32K3X4EVB-Q257,
I can't measure the I2C signal form PTF7 and PTF8.
I have already pulled up resistors of 4.7K with VDD on PTF7 and PTF8.
But it worked fine if I configured LPI2C_1 pins as PTC6 and PTC7.

My software environment is S32DS 3.4 + RTD version 2.0.0.
Here is my configuration：

Here is my source code：

#define TRANSFER_SIZE 8U

#define I2C_INSTANCE   1U

uint8 txBuffer[TRANSFER_SIZE] = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7};

int main(void)

{

    /* Init clock  */

    Clock_Ip_Init(&Clock_Ip_aClockConfig[0]);

/* Enable LPI2C interrupts */

    IntCtrl_Ip_Init(&IntCtrlConfig_0);

    IntCtrl_Ip_ConfigIrqRouting(&intRouteConfig);

/* Init Pins */

Siul2_Port_Ip_Init(NUM_OF_CONFIGURED_PINS0, g_pin_mux_InitConfigArr0);

/* Init master module */

Lpi2c_Ip_MasterInit(I2C_INSTANCE, &I2c_Lpi2cMasterChannel0_VS_0);

/* Send data non-blocking */

while (TRUE) {

Lpi2c_Ip_MasterSendDataBlocking(I2C_INSTANCE, txBuffer, TRANSFER_SIZE, TRUE, 1000);

}

    return 0;

}

#ifdef __cplusplus

}

#endif

Is there any suggestion to make PTF7 and PTF8 to output I2C signal?  

[Senlent · Accepted solution]

Hi@Neil1210

I just modifed this area only(I am not using external pull-up resistors)

Logic analyzer connection:

and the test result:

seem it work fine on myside.