FRDMK64 SPI INTERRUPT ISSUE

sudhakarp — Fri, 20 Nov 2015 09:57:39 GMT

HI,

I am using FRDMK64f120 controller, KDS2.0 and KSDK 1.1.0 example . I Tried SPI driver example code. in this one i dnt need interrupt so i commented following line

int32_t IRQNumber = g_dspiIrqId[SPI_INSTANCE];

_int_install_isr(IRQNumber, (INT_ISR_FPTR)DSPI_DRV_MasterIRQHandler, (void*)SPI_INSTANCE);

after that its not communicating with my AT45DB161 why..?

if i enable interrupt only its working fine. what is the reason?

MY REQUIREMENT:

what ever data coming from UART i want to write into external data flash. so for that i am calling external data flash write function inside void uartUser_RxCallback(uint32_t instance, void * param). function. that time its hanging may be i thing its related to interrupt only give some solution.

my spi initialization code:

dspi_master_user_config_t userConfig;

userConfig.isChipSelectContinuous = true;

userConfig.isSckContinuous = false;

userConfig.pcsPolarity = kDspiPcs_ActiveLow;

userConfig.whichCtar = kDspiCtar1;//kDspiCtar0;

userConfig.whichPcs = kDspiPcs1;//kDspiPcs0;

//* Init the DSPI module

dspi_master_state_t dspiMasterState;

dspi_status_t status = DSPI_DRV_MasterInit(SPI_INSTANCE, &dspiMasterState, &userConfig);

//* Define bus configuration

dspi_device_t spiDevice;

spiDevice.dataBusConfig.bitsPerFrame = 8;

spiDevice.dataBusConfig.clkPhase = kDspiClockPhase_SecondEdge;//kDspiClockPhase_SecondEdge

spiDevice.dataBusConfig.clkPolarity = kDspiClockPolarity_ActiveLow;//kDspiClockPolarity_ActiveLow

spiDevice.dataBusConfig.direction = kDspiMsbFirst;

spiDevice.bitsPerSec = 60000000;

//* Configure the SPI bus

uint32_t calculatedBaudRate;

status = DSPI_DRV_MasterConfigureBus(SPI_INSTANCE, &spiDevice, &calculatedBaudRate);

/* SPI use interrupt, must be installed in MQX and file fsl_dspi_irq.c must not be included in project */

// int32_t IRQNumber = g_dspiIrqId[SPI_INSTANCE]; //COMMENTED

// _int_install_isr(IRQNumber, (INT_ISR_FPTR)DSPI_DRV_MasterIRQHandler, (void*)SPI_INSTANCE); //COMMENTED

PLEASE GIVE SOME SOLUTION. I Can use with interrupt also but when i call spi related function inside void uartUser_RxCallback(uint32_t instance, void * param)

function its hanging. i dnt know why. may be i thing uartUser_RxCallback function also interrupt.

regards,

sudhakar p

Re: FRDMK64 SPI INTERRUPT ISSUE

Jorge_Gonzalez — Mon, 30 Nov 2015 18:10:14 GMT

Hello sudhakar p:

The KSDK DSPI driver is based on interrupts. If you want to use it in polling mode you need to use the HAL layer instead. I recommend you to install the latest KSDK v1.3 and there is an example for DSPI in polling mode in the next path:

C:\Freescale\KSDK_1.3.0\examples\frdmk64f\driver_examples\dspi\dspi_polling

Regards!

Jorge Gonzalez

topic FRDMK64 SPI INTERRUPT ISSUE in Kinetis Software Development Kit

FRDMK64 SPI INTERRUPT ISSUE

Re: FRDMK64 SPI INTERRUPT ISSUE