Texas Instruments CC3235 SimpleLink Series Bedienungsanleitung

SWRU539–January 2019

CC3235x SimpleLink™ Wi-Fi®LaunchPad™ Development Kit (LAUNCHXL-

CC3235x)

User's Guide

SWRU539–January 2019

CC3235x SimpleLink™ Wi-Fi®LaunchPad™

Development Kit (LAUNCHXL-CC3235x)

The CC3235 SimpleLink™ LaunchPad™ Development Kit (LAUNCHXL-CC3235x) is a low-cost

evaluation platform for Arm®Cortex®-M4-based MCUs. The LaunchPad (LP) design highlights the

CC3235 Dual Band (2.4 GHz and 5 GHz) wireless MCU system on a chip. The CC3235 LaunchPad™ kit

also features temperature and accelerometer sensors, programmable user buttons, RGB LED for custom

applications, and onboard emulator for debugging. The stackable headers of the LAUNCHXL-CC3235x

demonstrate how easy it is to expand the functionality of the LaunchPad™ kit. BoosterPack™ Plug-in

Modules allow for interfacing with other peripherals such as graphical displays, audio codecs, antenna

selection, environmental sensing, and more.

The CC3235S and CC3235SF devices are part of the SimpleLink™ microcontroller (MCU) ecosystem

which consist of Wi-Fi®, Bluetooth®low energy, Sub-1 GHz and host MCUs. All share a common, easy-to-

use development environment with a single core software development kit (SDK) and a rich tool set. A

one-time integration of the SimpleLink™ platform lets you add any combination of devices from the

portfolio into your design. The ultimate goal of the SimpleLink™ platform is to achieve 100% code reuse

when your design requirements change. For more information, visit www.ti.com/SimpleLink.

Contents

1 Introduction ................................................................................................................... 3

1.1 CC3235x LaunchPad™ Development Kit ....................................................................... 3

1.2 Key Features ........................................................................................................ 3

1.3 Kit Contents.......................................................................................................... 3

1.4 Regulatory Compliance ............................................................................................ 4

2 Hardware Description ....................................................................................................... 5

2.1 Block Diagram....................................................................................................... 6

2.2 Hardware Features ................................................................................................. 7

2.3 Connecting a BoosterPack™ ..................................................................................... 8

2.4 Wired Connections, Jumper Settings, Buttons, and LEDs .................................................... 9

2.5 Power ............................................................................................................... 18

2.6 Isolated Current Measurement of the CC3235 Device....................................................... 21

2.7 RF Connections ................................................................................................... 23

2.8 Assembly Drawing ................................................................................................ 25

List of Figures

1 CC3235 LaunchPad™ Board Overview.................................................................................. 5

2 CC3235 LaunchPad™ Block Diagram.................................................................................... 6

3 Pin 1 Marking on CC3235 LaunchPad™ (3v3 Tag) .................................................................... 8

4 Default Jumper Configuration for JTAG Lines........................................................................... 9

5 JTAG IN Connector........................................................................................................ 10

6 I2C Connections ............................................................................................................ 11

7 Power Jumpers J28, J23, J24, J18, J21, and J22..................................................................... 12

8 External Supply Connections and LED Enable Jumper............................................................... 13

9 SOP Jumpers (Default Setting Shown) ................................................................................. 14

10 UART Routed to USB COM Port......................................................................................... 15

11 UART Routed to 20-Pin Header Connector ............................................................................ 15

12 CC3235 BoosterPack™ Header Pin Assignments .................................................................... 17

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13 Powering From USB Jumper Settings................................................................................... 18

14 CC3235 LaunchPad™ Powered by Battery ............................................................................ 19

15 Only CC3235 Device and Serial Flash Powered by Battery ......................................................... 20

16 Low-Current Measurement (<1 mA)..................................................................................... 21

17 Active Power Measurements (>1 mA)................................................................................... 22

18 Using Onboard Antenna (Default Condition) ........................................................................... 23

19 Board Modified for External Antenna Connections (Measure 2.4 GHz) ............................................ 23

20 Board Modified for External Antenna Connections (Measure 2.4 GHz or 5 GHz)................................. 24

21 CC3235SF LaunchPad™ Top-Layer Assembly Drawing............................................................. 25

22 CC3235S LaunchPad™ Top-Layer Assembly Drawing............................................................... 26

List of Tables

1 JTAG Header Pin Definitions............................................................................................... 9

2 I2C Jumper Definitions..................................................................................................... 11

3 Default I2C Addresses (of Onboard Sensors) .......................................................................... 11

4 Jumper Settings for LaunchPad™ Power............................................................................... 12

5 External Supply Connections and LED Enable Jumper............................................................... 13

6 Reset Pull-Up Jumper ..................................................................................................... 13

7 J15, J16, J17 on LaunchPad™........................................................................................... 14

8 Push-Button Definitions ................................................................................................... 16

9 LED Indicators.............................................................................................................. 16

Trademarks

SimpleLink, LaunchPad, BoosterPack, Internet-on-a chip, Code Composer Studio, Texas Instruments,

Tiva are trademarks of Texas Instruments.

IAR Embedded Workbench is a registered trademark of Texas Instruments.

Arm, Cortex are registered trademarks of Arm Limited.

Bluetooth is a registered trademark of Bluetooth SIG, Inc..

Wi-Fi is a registered trademark of Wi-Fi Alliance.

www.ti.com

Introduction

SWRU539–January 2019

CC3235x SimpleLink™ Wi-Fi®LaunchPad™ Development Kit (LAUNCHXL-

CC3235x)

1 Introduction

1.1 CC3235x LaunchPad™ Development Kit

Created for the Internet of Things (IoT), the SimpleLink™ Wi-Fi®CC3235 device is a single-chip

microcontroller (MCU) with built-in Wi-Fi®connectivity for the LaunchPad™ ecosystem, which integrates a

high-performance Arm®Cortex®-M4 MCU and lets customers develop an entire application with one

device. With on-chip Wi-Fi®, Internet, and robust security protocols, no prior Wi-Fi®experience is required

for fast development.

The CC3235 LaunchPad™ kit, referred to by its part number LAUNCHXL-CC3235x, is a low-cost

evaluation platform for Arm®Cortex®-M4-based MCUs. The LaunchPad™ design highlights the CC3235

Internet-on-a chip™ solution and Wi-Fi®capabilities. The CC3235 LaunchPad™ also features temperature

and accelerometer sensors, programmable user buttons, RGB LED for custom applications, and onboard

emulation for debugging. The stackable headers of the CC3235 LaunchPad™ XL interface demonstrate

how easy it is to expand the functionality of the LaunchPad™ when interfacing with other peripherals on

many existing BoosterPack™ add-on boards, such as graphical displays, audio codecs, antenna selection,

environmental sensing, and more. There are two variants of the LaunchPad™: LAUNCHXL-CC3235S and

LAUNCHXL-CC3235SF. This user's guide applies to both variants, and any differences are noted in

relevant sections.

Multiple development environment tools are also available, including the Eclipse-based Code Composer

Studio™ (CCS) integrated development environment (IDE) and IAR Embedded Workbench®from Texas

Instruments™. More information about the LaunchPad™, the supported BoosterPack™ modules, and the

available resources can be found at the LaunchPad™ portal from TI. Also, visit the CC3235 Wiki page for

design resources and example projects.

NOTE: The maximum RF power transmitted in each WLAN 2.4-GHz band is 18.3 dBm. The

maximum RF power transmitted in each WLAN 5-GHz band is 17 dBm.

The antennas used for this transmitter must be installed to provide a separation distance of

at least 20 cm from all people, and must not be colocated or operating in conjunction with

any other antenna or transmitter.

1.2 Key Features

• CC3235x Dual Band (2.4GHz and 5GHz) SimpleLink™ Wi-Fi®, Internet-on-a chip™ solution with

integrated MCU

• 40-pin LaunchPad™ pinout that leverages the BoosterPack™ ecosystem

• on-board XDS110-based JTAG emulation with serial port for flash programming

• Two buttons and RGB LED for user interaction

• Back-channel universal asynchronous receiver/transmitter (UART) through USB to PC

• Onboard chip antenna with U.FL connector for conducted testing

• Onboard accelerometer and temperature sensor

• Micro USB connector for power and debug connections

1.3 Kit Contents

• CC3235 LaunchPad™ development tool (LAUNCHXL-CC3235x)

• Micro USB cable

• Quick Start Guide

Introduction

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1.4 Regulatory Compliance

The SimpleLink™ CC3235x Wi-Fi®LaunchPads™ are tested for and found to be in compliance with FCC

and ISED regulations regarding unlicensed intentional radiators. Hereby, Texas Instruments Inc. declares

that the radio equipment type LAUNCHXL-CC3235S and LAUNCHXL-CC3235SF are in compliance with

Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet

addresses:

•LAUNCHXL-CC3235x Certification Documents

•LAUNCHXL-CC3235S Declaration of Conformity

•LAUNCHXL-CC3235SF Declaration of Conformity

Indoor Usage Restrictions:

The device is restricted to indoor use only when operating in the 5150 to 5350 MHz frequency range.

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Hardware Description

SWRU539–January 2019

CC3235x SimpleLink™ Wi-Fi®LaunchPad™ Development Kit (LAUNCHXL-

CC3235x)

2 Hardware Description

Figure 1 shows the CC3235 LaunchPad™ board.

Figure 1. CC3235 LaunchPad™ Board Overview

Hardware Description

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CC3235x SimpleLink™ Wi-Fi®LaunchPad™ Development Kit (LAUNCHXL-

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2.1 Block Diagram

Figure 2 shows the CC3235 LaunchPad™ block diagram.

Figure 2. CC3235 LaunchPad™ Block Diagram

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Hardware Description

SWRU539–January 2019

CC3235x SimpleLink™ Wi-Fi®LaunchPad™ Development Kit (LAUNCHXL-

CC3235x)

2.2 Hardware Features

• CC3235 SimpleLink™ Wi-Fi®, Internet-on-a chip™ solution with integrated MCU

• 40-pin LaunchPad™ standard that leverages the BoosterPack™ ecosystem

• TI Standard XDS110-based JTAG emulation with serial port for flash programming

• Supports both 4-wire JTAG and 2-wire SWD

• Two buttons and a RGB LED for user interaction

• Virtual COM port UART through USB on PC

• Onboard chip antenna with U.FL or SMA for conducted testing, selectable using 0-Ωresistors

• Onboard accelerometer and temperature sensor for out-of-box demo, with the option to isolate them

from the inter-integrated circuit (I2C) bus

• Micro USB connector for power and debug connections

• Headers for current measurement and external JTAG connection, with an option to use the onboard

XDS110 to debug customer platforms

• Bus-powered device, with no external power required for Wi-Fi®

• Long-range transmission with a highly optimized antenna (200-meter typical in open air with a 6-dBi

antenna AP)

• Can be powered externally, working down to 2.3 V (typical)

Hardware Description

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2.3 Connecting a BoosterPack™

A compatible BoosterPack™ can be stacked on top of the LaunchPad™ using the 2-pin × 20-pin

connectors. The connectors do not have a key to prevent misalignment of the pins or reverse connection.

For ease of use, a BoosterPack™ Checker tool can be used to verify if the LaunchPad™ is compatible

with a given BoosterPack™ (see dev.ti.com/bpchecker/#).

Ensure that the 3V3 and 5V pins are aligned with the BoosterPack™ module header pins. On the CC3235

LaunchPad™, a small white 3V3 tag symbol is provided near pin 1 (see Figure 3) to orient all

BoosterPack™ modules. This same marking, provided on compatible BoosterPack™ modules, must be

aligned before powering up the boards.

Figure 3. Pin 1 Marking on CC3235 LaunchPad™ (3v3 Tag)

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Hardware Description

SWRU539–January 2019

CC3235x SimpleLink™ Wi-Fi®LaunchPad™ Development Kit (LAUNCHXL-

CC3235x)

2.4 Wired Connections, Jumper Settings, Buttons, and LEDs

2.4.1 JTAG Headers

Headers are provided onboard to isolate the CC3235 device from the onboard XDS110-based JTAG

emulator. These jumpers are shorted by default when the board is shipped from TI. Figure 4 and Table 1

show default configurations. Figure 5 shows the external emulator connection.

Figure 4. Default Jumper Configuration for JTAG Lines

(1) For SWD mode, only TCK and TMS must be shorted to the CC3235 device.

Table 1. JTAG Header Pin Definitions

Reference Use Comments

J4 (TCK)(1) JTAG and SWD

Jumpers populated: onboard emulator connected

Jumpers not populated: onboard emulator disconnected

J4 (TMS)(1) JTAG and SWD

J4 (TDI) JTAG

J4 (TDO) JTAG

Hardware Description

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To connect an external emulator, remove these jumpers and place the external emulator on the JTAG IN

connector (see Figure 5).

Figure 5. JTAG IN Connector

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