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# SimpleLink™ CC3235S LaunchPad™ Settings & Resources

The SimpleLink CC3235S LaunchPad contains a CC3235S device.

## Jumper Settings

- Close the `LEDs` jumper to enable the on-board LEDs.
- Close the `RX` and `TX` jumpers to enable UART via the XDS110 on-board USB debugger.
- Close the `OPAMP EN`, `GND`, and `BRD` jumpers to enable the operation amplifier circuit on analog pins `P57`, `P58`, `P59`, and `P60`. The operation amplifier circuit–even when disabled–prevents any output on the respective pins. Additionally, the input voltage is clipped to 1.4 Volts.

## Header Pins

Header pins designated with an asterisk (`*`) on the silkscreen are not connected to the device by default.

## SysConfig Board File

The CC3235S_LAUNCHXL.syscfg.json is a handcrafted file used by SysConfig. It describes the physical pin-out and components on the LaunchPad.

## Driver Examples Resources

Examples utilize SysConfig to generate software configurations into the ti_drivers_config.c and ti_drivers_config.h files. The SysConfig user interface can be utilized to determine pins and resources used. Information on pins and resources used is also present in both generated files.

## TI BoosterPacks™

The following BoosterPack(s) are used with some driver examples.

#### BOOSTXL-SHARP128 LCD & SD Card BoosterPack

- The SD card’s default SPI bus is not compatible with this LaunchPad’s header pin layout. To use the SD card, the BoosterPack cannot be placed directly atop the LaunchPad. Use the following modification(s) to enable SD card usage with the fatsd, fatsdraw, and sdraw example(s).

  - Use a jumper wire to connect:

    LaunchPad | BOOSTXL-SHARP128
    --- | ---
    `3V3` | `3V3`
    `GND` | `GND`
    `P08/CMD` | `SPI_MOSI`
    `P07/CLK` | `SPI_CLK`
    `P06/DATA` | `SPI_MISO`

- The LCD’s SPI slave select and power pins are not compatible with this LaunchPad’s header pin layout. The BoosterPack can be placed directly atop the LaunchPad. Use the following modification(s) to use the BOOSTXL-SHARP128 LCD with the display example.

  - Use a jumper wire to connect:

    LaunchPad | BOOSTXL-SHARP128
    --- | ---
    `3V3` | `LCD_PWR`
    `P03` | `LCD_CS`

#### BP-BASSENSORSMKII BoosterPack

- The OPT3001’s interrupt pin is not compatible with this LaunchPad. Use one of the following modification(s) to enable the OPT3001’s usage with the i2copt3001_cpp example.

  - Use a jumper wire to connect `O_INT` to `P05`.

#### CC3200 Audio BoosterPack

- No modifications are needed.

## Reset Behavior

By default, the application is not retained after a power reset.