cc3100 spi driver for cc430

Hi Parth,

Can you please share some more details about setup and configuration, like Spi configuration you are using on cc430f5137 board? which pins of cc3100 are connected with mcu?

For spi configuration related details you can refer to host interface guide.

http://processors.wiki.ti.com/index.php/CC31xx_Host_Interface

http://processors.wiki.ti.com/index.php/CC31xx_SPI_Host_Interface

Regards,

Ankur

Hello Ankur,

Thanks for replying.
I have connected cc430f5137 as a master with 3100. Following are the port allocation for cc430f5137:
P1.5 MISO
P1.6 MOSI
P1.7 CLK
P1.4 IRQ
P1.1 CS
P1.0 HIB

Following ismy modified spi_open function from spi_debugging_tool example:

/* Select the SPI lines: MISO/MOSI on P1.5,6 CLK on P1.7 */

P1SEL |= (BIT5 + BIT6);

P1REN |= BIT6;
P1OUT |= BIT6;

P1SEL |= BIT7;

UCB0CTL1 |= UCSWRST; /* Put state machine in reset */
UCB0CTL0 = UCMSB + UCMST + UCSYNC + UCCKPH; /* 3-pin, 8-bit SPI master */

UCB0CTL1 = UCSWRST + UCSSEL_2; /* Use SMCLK, keep RESET */

/* Set SPI clock */
UCB0BR0 = 0x02; /* f_UCxCLK = 25MHz/2 */
UCB0BR1 = 0;
UCB0CTL1 &= ~UCSWRST;



/* P1.0 - WLAN enable full DS */
P1SEL &= ~BIT0;
P1OUT &= ~BIT0;
P1DIR |= BIT0;

/* Configure SPI IRQ line on P1.4 */
P1DIR &= ~BIT4;
P1SEL &= ~BIT4;

P1REN |= BIT4;


/* Configure the SPI CS to be on P1.1 */
P1OUT |= BIT1;
P1SEL &= ~BIT1;
P1DIR |= BIT1;

/* 50 ms delay */
//Delay(50);

/* Enable WLAN interrupt */
CC3100_InterruptEnable();

return NONOS_RET_OK;


Let me know if I am missing anything.
The spi test fails on reading. In spi_debugtool example it tries to match the sync pattern.
I am in need of a simple test to verify my spi connection and to conclude that 3100 response on spi commands correctly.

Appreciate you help here.

Thanks,
Parth

Hello Ankur,

I am able to solve the problem and now spi test passes with all tests.
Now, I am trying to run the sample application "getting_started_with_wlan_station" form simplelink sdk,
But when it reached the point of setting wlan policy, it return error code.

/* Set connection policy to Auto + SmartConfig (Device's default connection policy) */
retVal = sl_WlanPolicySet(SL_POLICY_CONNECTION, SL_CONNECTION_POLICY(1, 0, 0, 0, 1), NULL, 0);
ASSERT_ON_ERROR(retVal);

retVal returns -7 value. I see some other thread raising this problem, but couldn't find perfect answer for this.
Can you please help me here, is this known issue?

Thanks,
Parth

Hi Parthraj,

-7 error corresponds to the CC3100 file system. It seems that device is not able to access the file system.
Can you try formatting the serial flash and updating the service pack?
Please refer to uniflash user guide for deatils.
http://processors.wiki.ti.com/index.php/CC31xx_%26_CC32xx_UniFlash_Quick_Start_Guide

Regards,
Ankur

Hi Ankur,

Thanks for the information.
Is there anyway I can use cc3100 without file system/serial flash?

Thanks,
Parthraj

The problem I am having is, I have not put the provision of UART tx/rx to program the serial flash.
CC3100 has only SPI connection with host cc430f5137.
And Uniflash can format serial flash over uart connection to 3100 which I am not having right now.
So, is there any work around way that I can format flash via host controller?
Appreciate your help here.

Thanks,
Parthraj

Hi Parthraj,

The serial flash/file system is used to store the system configuration file along with user file and you can't bypass the same.

Formatting the serial flash via host controller is not supported and its always advised to route uart rx/tx to header or test point on the board.

Regards,
Ankur

Hi Parthraj,

I am closing this thread, for follow up query please open a new thread with a link to this one for reference.

Regards,
Ankur

Hello Ankur,

formatting the flash and service pack update resolved the issue.

Thanks for your support,
Parth