topic Re: I2C sample from SDK does not work on LPCXpresso5411x development board in LPC Microcontrollers

I2C sample from SDK does not work on LPCXpresso5411x development board

misterbee — Fri, 20 May 2022 07:54:48 GMT

I have with me LPCXpresso5411x development board. I use MCUXpresso IDE to import a project sample freertos_i2c. It can build and run the debugger. However it seems there is no I2C communication establish, the callback i2c_slave_callback() is not triggered at all.

The following init is success:

status = I2C_RTOS_Init(&master_rtos_handle, EXAMPLE_I2C_MASTER, &masterConfig, sourceClock);

However the following attempt for master to transfer data fail with status 2611:

status = I2C_RTOS_Transfer(&master_rtos_handle, &masterXfer);
if (status != kStatus_Success)
{
PRINTF("I2C master: error during write transaction, %d", status);
}

I am expecting it works just out of the box, or is there anything I miss or should preconfigure before?

Re: I2C sample from SDK does not work on LPCXpresso5411x development board

Julián_AragónM — Fri, 20 May 2022 17:17:06 GMT

Hi misterbee,

There isn't any pre-configuration needed to run the i2c example. Could you please re-confirm both i2c connections?

I2C1 connected to I2C2

SCL P0_25(J1 pin1) --> P0_18(J1 pin11)

SDA P0_26(J1 pin3) --> P0_20(J1 pin13)

Can you also please confirm if you are connecting any extra boards or any other component? Did you modify the SDK example?

Best regards, Julian

Re: I2C sample from SDK does not work on LPCXpresso5411x development board

misterbee — Mon, 23 May 2022 06:00:51 GMT

Hi @Julián_AragónM ,

Thank you for the response. I don't connect to any board nor I modify the SDK. I just take a fresh board and load the sample from the IDE.

Where can check this? From the code? which file/function?

"I2C1 connected to I2C2

SCL P0_25(J1 pin1) --> P0_18(J1 pin11)

SDA P0_26(J1 pin3) --> P0_20(J1 pin13)"

Re: I2C sample from SDK does not work on LPCXpresso5411x development board

misterbee — Mon, 23 May 2022 06:56:58 GMT

Hi @Julián_AragónM ,

I saw this in the code, will this help to answer your question about the I2C connection?

/* clang-format off */ /* * TEXT BELOW IS USED AS SETTING FOR TOOLS ************************************* BOARD_InitPins: - options: {callFromInitBoot: 'true', coreID: cm4, enableClock: 'true'} - pin_list: - {pin_num: '31', peripheral: FLEXCOMM0, signal: RXD_SDA_MOSI, pin_signal: PIO0_0/FC0_RXD_SDA_MOSI/FC3_CTS_SDA_SSEL0/CTIMER0_CAP0/SCT0_OUT3, mode: inactive, invert: disabled, glitch_filter: disabled, slew_rate: standard, open_drain: disabled} - {pin_num: '32', peripheral: FLEXCOMM0, signal: TXD_SCL_MISO, pin_signal: PIO0_1/FC0_TXD_SCL_MISO/FC3_RTS_SCL_SSEL1/CTIMER0_CAP1/SCT0_OUT1, mode: inactive, invert: disabled, glitch_filter: disabled, slew_rate: standard, open_drain: disabled} - {pin_num: '3', peripheral: FLEXCOMM4, signal: RTS_SCL_SSEL1, pin_signal: PIO0_25/FC4_RTS_SCL_SSEL1/FC6_CTS_SDA_SSEL0/CTIMER0_CAP2/CTIMER1_CAP1, invert: disabled, glitch_filter: disabled, i2c_slew: i2c, i2c_drive: low, i2c_filter: enabled} - {pin_num: '4', peripheral: FLEXCOMM4, signal: CTS_SDA_SSEL0, pin_signal: PIO0_26/FC4_CTS_SDA_SSEL0/CTIMER0_CAP3, invert: disabled, glitch_filter: disabled, i2c_slew: i2c, i2c_drive: low, i2c_filter: enabled} - {pin_num: '58', peripheral: FLEXCOMM5, signal: TXD_SCL_MISO, pin_signal: PIO0_18/FC5_TXD_SCL_MISO/SCT0_OUT0/CTIMER0_MAT0, mode: inactive, invert: disabled, glitch_filter: disabled, slew_rate: standard, open_drain: disabled} - {pin_num: '60', peripheral: FLEXCOMM5, signal: RXD_SDA_MOSI, pin_signal: PIO0_20/FC5_RXD_SDA_MOSI/FC0_SCK/CTIMER3_CAP0, mode: inactive, invert: disabled, glitch_filter: disabled, slew_rate: standard, open_drain: disabled} * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS *********** */ /* clang-format on */ /* FUNCTION ************************************************************************************************************ * * Function Name : BOARD_InitPins * Description : Configures pin routing and optionally pin electrical features. * * END ****************************************************************************************************************/ /* Function assigned for the Cortex-M4F */ void BOARD_InitPins(void) { /* Enables the clock for the IOCON block. 0 = Disable; 1 = Enable.: 0x01u */ CLOCK_EnableClock(kCLOCK_Iocon); const uint32_t port0_pin0_config = (/* Pin is configured as FC0_RXD_SDA_MOSI */ IOCON_PIO_FUNC1 | /* No addition pin function */ IOCON_PIO_MODE_INACT | /* Input function is not inverted */ IOCON_PIO_INV_DI | /* Enables digital function */ IOCON_PIO_DIGITAL_EN | /* Input filter disabled */ IOCON_PIO_INPFILT_OFF | /* Standard mode, output slew rate control is enabled */ IOCON_PIO_SLEW_STANDARD | /* Open drain is disabled */ IOCON_PIO_OPENDRAIN_DI); /* PORT0 PIN0 (coords: 31) is configured as FC0_RXD_SDA_MOSI */ IOCON_PinMuxSet(IOCON, 0U, 0U, port0_pin0_config); const uint32_t port0_pin1_config = (/* Pin is configured as FC0_TXD_SCL_MISO */ IOCON_PIO_FUNC1 | /* No addition pin function */ IOCON_PIO_MODE_INACT | /* Input function is not inverted */ IOCON_PIO_INV_DI | /* Enables digital function */ IOCON_PIO_DIGITAL_EN | /* Input filter disabled */ IOCON_PIO_INPFILT_OFF | /* Standard mode, output slew rate control is enabled */ IOCON_PIO_SLEW_STANDARD | /* Open drain is disabled */ IOCON_PIO_OPENDRAIN_DI); /* PORT0 PIN1 (coords: 32) is configured as FC0_TXD_SCL_MISO */ IOCON_PinMuxSet(IOCON, 0U, 1U, port0_pin1_config); const uint32_t port0_pin18_config = (/* Pin is configured as FC5_TXD_SCL_MISO */ IOCON_PIO_FUNC1 | /* No addition pin function */ IOCON_PIO_MODE_INACT | /* Input function is not inverted */ IOCON_PIO_INV_DI | /* Enables digital function */ IOCON_PIO_DIGITAL_EN | /* Input filter disabled */ IOCON_PIO_INPFILT_OFF | /* Standard mode, output slew rate control is enabled */ IOCON_PIO_SLEW_STANDARD | /* Open drain is disabled */ IOCON_PIO_OPENDRAIN_DI); /* PORT0 PIN18 (coords: 58) is configured as FC5_TXD_SCL_MISO */ IOCON_PinMuxSet(IOCON, 0U, 18U, port0_pin18_config); const uint32_t port0_pin20_config = (/* Pin is configured as FC5_RXD_SDA_MOSI */ IOCON_PIO_FUNC1 | /* No addition pin function */ IOCON_PIO_MODE_INACT | /* Input function is not inverted */ IOCON_PIO_INV_DI | /* Enables digital function */ IOCON_PIO_DIGITAL_EN | /* Input filter disabled */ IOCON_PIO_INPFILT_OFF | /* Standard mode, output slew rate control is enabled */ IOCON_PIO_SLEW_STANDARD | /* Open drain is disabled */ IOCON_PIO_OPENDRAIN_DI); /* PORT0 PIN20 (coords: 60) is configured as FC5_RXD_SDA_MOSI */ IOCON_PinMuxSet(IOCON, 0U, 20U, port0_pin20_config); const uint32_t port0_pin25_config = (/* Pin is configured as FC4_RTS_SCL_SSEL1 */ IOCON_PIO_FUNC1 | /* I2C mode */ IOCON_PIO_I2CSLEW_I2C | /* Input function is not inverted */ IOCON_PIO_INV_DI | /* Enables digital function */ IOCON_PIO_DIGITAL_EN | /* Input filter disabled */ IOCON_PIO_INPFILT_OFF | /* Low drive: 4 mA */ IOCON_PIO_I2CDRIVE_LOW | /* I2C 50 ns glitch filter enabled */ IOCON_PIO_I2CFILTER_EN); /* PORT0 PIN25 (coords: 3) is configured as FC4_RTS_SCL_SSEL1 */ IOCON_PinMuxSet(IOCON, 0U, 25U, port0_pin25_config); const uint32_t port0_pin26_config = (/* Pin is configured as FC4_CTS_SDA_SSEL0 */ IOCON_PIO_FUNC1 | /* I2C mode */ IOCON_PIO_I2CSLEW_I2C | /* Input function is not inverted */ IOCON_PIO_INV_DI | /* Enables digital function */ IOCON_PIO_DIGITAL_EN | /* Input filter disabled */ IOCON_PIO_INPFILT_OFF | /* Low drive: 4 mA */ IOCON_PIO_I2CDRIVE_LOW | /* I2C 50 ns glitch filter enabled */ IOCON_PIO_I2CFILTER_EN); /* PORT0 PIN26 (coords: 4) is configured as FC4_CTS_SDA_SSEL0 */ IOCON_PinMuxSet(IOCON, 0U, 26U, port0_pin26_config); }

Re: I2C sample from SDK does not work on LPCXpresso5411x development board

Julián_AragónM — Tue, 24 May 2022 14:31:59 GMT

Hi @misterbee,

This is in the "readme" file under docs folder in your project folder. It can be found in "...\Documents\MCUXpressoIDE_11.5.1_7266\workspace\lpcxpresso54114_freertos_i2c\doc"

There you can find the instructions to run the project.

Best regards, Julian

Re: I2C sample from SDK does not work on LPCXpresso5411x development board

misterbee — Wed, 25 May 2022 06:48:44 GMT

Thank you @Julián_AragónM , I can see the instruction now to setup connection I2C1 <-> I2C2.

Should I expect this setup already done when I download the sdk sample? Or I have to do this in addition?

Re: I2C sample from SDK does not work on LPCXpresso5411x development board

misterbee — Wed, 25 May 2022 07:30:05 GMT

Just want to attach the snapshot of the error log from com port

Re: I2C sample from SDK does not work on LPCXpresso5411x development board

Julián_AragónM — Wed, 25 May 2022 14:02:31 GMT

Hi @misterbee,

Could you please attach a picture of your physical setup?

Best regards, Julian

Re: I2C sample from SDK does not work on LPCXpresso5411x development board

misterbee — Thu, 26 May 2022 01:56:28 GMT

Hi @Julián_AragónM ,

It is now resolved, silly me, just realized need to do wiring to physically connect between the two I2C :D.

Thank you for showing me the instruction doc, otherwise I would not be aware of this :).