CCS/CC3200-LAUNCHXL: cc3200 data receive problem

Aju s

Part Number: CC3200-LAUNCHXL

Tool/software: Code Composer Studio

Hi,

i have some doubts in spi reception of cc3200.(i'm using cc3200 launchxl in ccs7 with CC3200SDK_1.3.0).i have to transmit and receive characters over spi so i import the spi demo code and corrected the transmit but in the case of reception i use "MAP_SPIDataGet(GSPI_BASE,&ulRecvData);" function but it doesn't shows any reception .

The program waits in

// Wait for Rx data
//
while(!(HWREG(ulBase + MCSPI_O_CH0STAT) & MCSPI_CH0STAT_RXS))
{
}

(MISO pin is P2.7(7th pin in P2header))

i think slave doesn't responding but that's wrong because i input character through uart from another system to the MISO pin ,at that time also the program is in the waiting state.Can anyone solve this problem?i'm really stuck here.... (i tried "MAP_SPITransfer(GSPI_BASE,0,rec[0],1,SPI_CS_ENABLE|SPI_CS_DISABLE " also but the result is same)

Thank You

over 8 years ago

0 Benjamin Moore over 8 years ago

TI__Mastermind 30820 points

Hi Aju,

I recommend using a logic analyzer to make sure the correct data is being output from the slave onto the MISO lines when the transfer occurs.

Best Regards,
Ben M

0 Aju s over 8 years ago in reply to Benjamin Moore

Expert 1220 points

Thanks for your reply
i probed by logic analyzer and observe that there is no data transferring.i analyse the problem and observe the above .Please answer it

0 Benjamin Moore over 8 years ago in reply to Aju s

TI__Mastermind 30820 points

Hi Aju,

I'm not sure I understand your description. The SPI slave is supposed to be outputting data, but you do not see any data coming out? You need to make sure the slave is properly configured so that it will send data when clocked.

You are using two LaunchPads, correct? Did you set the MASTER_MODE define to 0 before building and flashing the slave device?

Best Regards,
Ben M

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CCS/CC3200-LAUNCHXL: cc3200 data receive problem