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TM4c123GXL Launchpad with CC3000 interface

r n
Prodigy 110 points

Hello,
           I have one more query related the standard pinout for
 TM4c123GXL Launchpad with CC3000  is
 given as below,

         For Tiva        For CC3000

 1       Vcc              Vbat
 2       PB5             Vbat_EN
 3       PB0
 4       PB1
 5       PE4
 6       PE5
 7       PB4            WI_SPI_CLK
 8       PA5
 9       PA6
 10      PA7
 11      PA2
 12      PA3
 13      PA4
 14      PB6          WI_SPI_DOUT
 15      PB7          WI_SPI_DIN
 16      RST
 17      PF0
 18      PE0           WI_SPI_FSS
 19      PB2           WI_SPI_IRQ
 20      GND          GND

 I have some doubt here  that pin 2  SPI_fss for board TM4C123GXL is
 connected to CC3000 pin 2 which is Vbat enable and CC3000 has pin 18 which is Wi_SPI_Fss
 which is exactly mismatch as per pins mention in EK-TM4cGXL  Lanuchpad
 & Swru331 pdf. So user need to change in hardware by ext connection to
 configure SPI_fss pin for TM4c

  • 0
    TI__Mastermind 27095 points

    Hi,

    I think the Pin mapping is alright here. With respect to CC3000 Boosterpack, the header J9 should map to the J1 of TivaC launchpad. And J10 of CC3000 Boosterpack should map to the J2 of TivaC launchpad.

    The 3rd Pin on J10(CC3000 Boosterpack) is specified as 'WL_SPI_CS' and not Vbat enable, which maps to PE0 (SPI Slave select) on Tiva C launchpad.

    Thanks & Regards,

    Raghavendra

  • 0 in reply to Raghavendra Shenoy
    Prodigy 110 points

    Hello, I am still not clear I have already seen this by seeing J1->J9 & J2->J10 only I have doubt . I know pin3 of J10 CC3000 is WI_SPI_CS I think when booster pack mounted on TIva launchpad it will get connected to PE0. But pin PE0 is not assigned to SPI_CS as per datasheet its given that GPIO-PCTL function for PE0 we can only select ANI3 or U7RX not SPI_CS so I have doubt about this. Please suggest

  • 0 in reply to Raghavendra Shenoy
    Prodigy 110 points

    Hello,

              I am still not clear I have already seen this by seeing J1->J9 & J2->J10  only I have doubt . I know pin3 of J10 CC3000 is WI_SPI_CS

    I  think when booster pack mounted on Tiva launchpad  it will get connected to PE0. But pin PE0 is not assigned to SPI_CS  as per datasheet its given that  GPIO-PCTL function for PE0 we can  only select ANI3 or U7RX not SPI_CS so I have doubt about this. Please suggest

  • 0 in reply to r n
    Prodigy 110 points

    This is ref pins given in datasheet

  • 0 in reply to r n
    TI__Mastermind 27095 points

    Hi,

    Looks like there is a gap in what we are understanding from the data sheet. Even the Stellaris LM4F120H5QR (TM4C1233H6PM) pin mapping shows PE0 as a GPIO function (ANI3 or U7RX). But we configure SPI CS on Port E, Pin 0.

    I will check this with the related experts and get back to you.

    Thanks & Regards,
    Raghavendra