topic Re: simple SPI checking in Kinetis Microcontrollers

simple SPI checking

afdasdfas — Thu, 19 Dec 2013 05:41:22 GMT

I have 2 FRDM Kit ( KL25Z and K20D50M). I try to connect them by SPI ( one is Master, one is Slave, code of them i follow the help in CodeWarrior , see beelow).

When i debug the Salve kit. How can i know ( or see ) the Value which Slave receive in CodeWarrior program ?

it mean : how can i view that Value of InpData[BLOCK_SIZE] in codewarrior ?

Master

Content of ProcessorExpert.c:

#define BLOCK_SIZE 4

uint8_t OutData[BLOCK_SIZE] = "0123";

uint8_t InpData[BLOCK_SIZE];

volatile bool DataReceivedFlag = FALSE;

volatile LDD_SPIMASTER_TError ComError = 0U;

LDD_TError Error;

LDD_TDeviceData *MySPIPtr;

void main(void)

{

...

MySPIPtr = SM1_Init(NULL); /* Initialization of SM1 component */

Error = SM1_ReceiveBlock(MySPIPtr, InpData, BLOCK_SIZE); /* Request data block reception */

Error = SM1_SendBlock(MySPIPtr, OutData, BLOCK_SIZE); /* Start transmission/reception */

while (!DataReceivedFlag) {}; /* Wait until data block is transmitted/received */

}

Content of Event.c:

extern volatile bool DataReceivedFlag;

extern volatile LDD_SPIMASTER_TError ComError;

extern LDD_TError Error;

extern LDD_TDeviceData *MySPIPtr;

void SM1_OnBlockReceived(LDD_TUserData *UserDataPtr)

{

DataReceivedFlag = TRUE; /* Set Data received flag */

}

void SM1_OnError(LDD_TUserData *UserDataPtr)

{

Error = SM1_GetError(MySPIPtr, (LDD_SPIMASTER_TError *)&ComError); /* Get communication errors if occured */

}

Slave

Content of ProcessorExpert.c:

#define BLOCK_SIZE 4

uint8_t OutData[BLOCK_SIZE] = "0123";

uint8_t InpData[BLOCK_SIZE];

volatile bool DataReceivedFlag = FALSE;

volatile LDD_SPISLAVE_TError ComError = 0U;

LDD_TError Error;

LDD_TDeviceData *MySPIPtr;

void main(void)

...

  MySPIPtr = SS1_Init(NULL);                               /* Initialization of SS1 component */

  Error = SS1_ReceiveBlock(MySPIPtr, InpData, BLOCK_SIZE); /* Request data block reception */

  Error = SS1_SendBlock(MySPIPtr, OutData, BLOCK_SIZE);    /* Start transmission/reception */

  while (!DataReceivedFlag) {};                            /* Wait until data block is transmitted/received */

Content of Event.c:

extern volatile bool DataReceivedFlag;

extern volatile LDD_SPISLAVE_TError ComError;

extern LDD_TError Error;

extern LDD_TDeviceData *MySPIPtr;

void SS1_OnBlockReceived(LDD_TUserData *UserDataPtr)

  DataReceivedFlag = TRUE;                                 /* Set Data received flag */

void SS1_OnError(LDD_TUserData *UserDataPtr)

  Error = SS1_GetError(MySPIPtr, (LDD_SPISLAVE_TError *)&ComError); /* Get communication errors if occured */

Re: simple SPI checking

Hui_Ma — Thu, 19 Dec 2013 07:10:48 GMT

After you run the both boards, the SPI master will start SPI communication and the SPI slave will receive related data.

You can check the SPI InpData[] array in CodeWarrior watch window or use serial print related data after SPI transfer.

Wish it helps.

B.R.

Ma Hui

Re: simple SPI checking

afdasdfas — Thu, 19 Dec 2013 07:30:04 GMT

Can you tell me the way to :"CodeWarrior watch window" to see the SPI InpData[] value ? I try to find it in Codewarrior , but not see this tab.

Re: Re: simple SPI checking

Hui_Ma — Thu, 19 Dec 2013 07:50:37 GMT

I record a video about how to add variable to CodeWarrior's watch window.

Wish it helps.

B.R.

Ma Hui

Re: simple SPI checking

afdasdfas — Thu, 19 Dec 2013 08:00:46 GMT

Yes, that is right. Now i can read the Value of SPI debug. Thank you very much

Re: simple SPI checking

afdasdfas — Thu, 19 Dec 2013 09:46:19 GMT

Hi all

And other question , after i check the Value of the SPI InpData[] . I see that all SPI InpData[] value is 0xff although i send "0123", please help me to view and correct the code over here and help me to correct my SPI connect.

Re: simple SPI checking

Hui_Ma — Wed, 25 Dec 2013 01:40:20 GMT

Please check the hardware connection between 2 FRDM Kit ( KL25Z and K20D50M). And there is a thread about FRDM-K20D50M board connection, wish it helps.

https://community.freescale.com/thread/313682

Re: simple SPI checking

changkenta — Fri, 27 Dec 2013 08:18:14 GMT

Hello,

I have question about this issue: I can not setting the OnError Event mask of SPIMaster_LDD?

please let me know How to setting it.

Regards,

Kenta