https://community.nxp.com/t5/S32K/S32K14x-MCAL-I2C-I2c-SyncTransmit-error/m-p/1680419#M24681 <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Snipaste_2023-07-03_14-12-59.png" style="width: 999px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/230501i5F3C360189D9003D/image-size/large?v=v2&amp;px=999" role="button" title="Snipaste_2023-07-03_14-12-59.png" alt="Snipaste_2023-07-03_14-12-59.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Snipaste_2023-07-03_14-20-51.png" style="width: 999px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/230503iE3BF8969151CB34E/image-size/large?v=v2&amp;px=999" role="button" title="Snipaste_2023-07-03_14-20-51.png" alt="Snipaste_2023-07-03_14-20-51.png" /></span></P><DIV><DIV><DIV><DIV><DIV><P>It could send slave device address OK, but slave device not response ACK, and the function</P><P>I2c_LPI2C_MasterSyncSend() first enter loop could run to section<BR />I2c_LPI2C_au8CurrentIndex[u8Channel]++;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; but second loop run into function&nbsp;I2c_LPI2C_MasterErrorHandler()&nbsp;&nbsp;<BR />/* Log the error and it will be checked during the sync transfer or in the DMA transfer */ I2c_LPI2C_au8ErrorsFound[u8Channel] = 0x1U;&nbsp; so cause the code ran at&nbsp;<BR />I2c_aeChannelStatus[s8LogicalChannel] = I2C_CH_ERROR_PRESENT;&nbsp; &nbsp;return E_NOT_OK，break out.&nbsp; &nbsp; &nbsp; Is there some MCAL IIC sample application demo can reference,and how to&nbsp;figure out&nbsp;the problem before. Thank you!</P></DIV></DIV></DIV></DIV></DIV> Mon, 03 Jul 2023 10:05:01 GMT DELPHI_Eric 2023-07-03T10:05:01Z https://community.nxp.com/t5/S32K/S32K14x-MCAL-I2C-I2c-SyncTransmit-error/m-p/1680419#M24681 <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Snipaste_2023-07-03_14-12-59.png" style="width: 999px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/230501i5F3C360189D9003D/image-size/large?v=v2&amp;px=999" role="button" title="Snipaste_2023-07-03_14-12-59.png" alt="Snipaste_2023-07-03_14-12-59.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Snipaste_2023-07-03_14-20-51.png" style="width: 999px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/230503iE3BF8969151CB34E/image-size/large?v=v2&amp;px=999" role="button" title="Snipaste_2023-07-03_14-20-51.png" alt="Snipaste_2023-07-03_14-20-51.png" /></span></P><DIV><DIV><DIV><DIV><DIV><P>It could send slave device address OK, but slave device not response ACK, and the function</P><P>I2c_LPI2C_MasterSyncSend() first enter loop could run to section<BR />I2c_LPI2C_au8CurrentIndex[u8Channel]++;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; but second loop run into function&nbsp;I2c_LPI2C_MasterErrorHandler()&nbsp;&nbsp;<BR />/* Log the error and it will be checked during the sync transfer or in the DMA transfer */ I2c_LPI2C_au8ErrorsFound[u8Channel] = 0x1U;&nbsp; so cause the code ran at&nbsp;<BR />I2c_aeChannelStatus[s8LogicalChannel] = I2C_CH_ERROR_PRESENT;&nbsp; &nbsp;return E_NOT_OK，break out.&nbsp; &nbsp; &nbsp; Is there some MCAL IIC sample application demo can reference,and how to&nbsp;figure out&nbsp;the problem before. Thank you!</P></DIV></DIV></DIV></DIV></DIV> Mon, 03 Jul 2023 10:05:01 GMT https://community.nxp.com/t5/S32K/S32K14x-MCAL-I2C-I2c-SyncTransmit-error/m-p/1680419#M24681 DELPHI_Eric 2023-07-03T10:05:01Z https://community.nxp.com/t5/S32K/S32K14x-MCAL-I2C-I2c-SyncTransmit-error/m-p/1680438#M24683 In the function I2c_LPI2C_MasterSyncSend() , when the while(;;) first loop, the line 1601：u32IsrStatus = REG_READ32(LPI2C_MSR_ADDR32(u8Channel)); u32IsrStatus read value was 0x3000001；when the second loop, u32IsrStatus read value was 0x700 Mon, 03 Jul 2023 10:18:48 GMT https://community.nxp.com/t5/S32K/S32K14x-MCAL-I2C-I2c-SyncTransmit-error/m-p/1680438#M24683 DELPHI_Eric 2023-07-03T10:18:48Z