spi in imx8x M4 core

[Ouseppachan_CR]

Hi,

Am trying to setup lpspi from m4 core in imx8x processor and i dindnt found any sample code in SDK. can anyone help with a sample code for spi in imx8x M4 core.

[Chavira]

Hi @Ouseppachan_CR!

Thank you for contacting NXP Support!

Sorry, unfortunately, we don't have examples for that.

All the examples can be found on our Git Hub.

https://github.com/nxp-mcuxpresso/mcux-sdk-examples/tree/main/mekmimx8qx

We have the documentation of our MCUXPRESSO SDK that documentation can be useful for you.

You can download the Documentation and the SDK by following the link:

 https://mcuxpresso.nxp.com/en/welcome

Best Regards!

Chavira

[Ouseppachan_CR]

hi @Chavira,

I saw these examples, from this i tried to initilised lpspi.

The pin settings i have done is following,

sc_pm_set_resource_power_mode(ipc, SC_R_SPI_2, SC_PM_PW_MODE_ON);

sc_pad_set_all(ipc, IMX8QXP_SPI2_SCK, 0U, SC_PAD_CONFIG_NORMAL, SC_PAD_ISO_OFF, 0x40 ,SC_PAD_WAKEUP_OFF); // CLK

sc_pad_set_all(ipc, IMX8QXP_SPI2_SDI, 0U, SC_PAD_CONFIG_NORMAL, SC_PAD_ISO_OFF, 0x40 ,SC_PAD_WAKEUP_OFF); // MISO

sc_pad_set_all(ipc, IMX8QXP_SPI2_SDO, 0U, SC_PAD_CONFIG_NORMAL, SC_PAD_ISO_OFF, 0x40 ,SC_PAD_WAKEUP_OFF); // MOSI

sc_pm_clock_enable(ipc, SC_R_SPI_2, SC_PM_CLK_PER, true, 0);

CLOCK_SetIpFreq(kCLOCK_DMA_Lpspi2, SC_60MHZ);

and the spi initilisation was,

LPSPI_MasterGetDefaultConfig(&Masterconfig);

LPSPI_MasterInit(ADMA__LPSPI2, &Masterconfig, SC_60MHZ);

LPSPI_EnableInterrupts(ADMA__LPSPI2, kLPSPI_AllInterruptEnable);

EnableIRQ(ADMA_SPI2_INT_IRQn);

I am sending a data by the function

LPSPI_MasterTransferNonBlocking(ADMA__LPSPI2, &g_s_handle, &slaveXfer);

By this i am not getting the clock on SCK pin.

with regards,

Ouseppachan CR

[Chavira]

Hi @Ouseppachan_CR!

The pins should be configured on pin_mux.c, you can get based on the example of iMX8QM.

You can use the Config tools for iMX to do the pin configuration.

https://github.com/nxp-mcuxpresso/mcux-sdk-examples/blob/main/mekmimx8qm/driver_examples/lpspi/edma_...

https://github.com/nxp-mcuxpresso/mcux-sdk-examples/blob/main/mekmimx8qm/driver_examples/lpspi/edma_...

https://www.nxp.com/design/design-center/development-boards/i-mx-evaluation-and-development-boards/c...

Best Regards!

Chavira