User manual

Hardware Description

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Table 1. JTAG Headers

Reference Usage Comments

J8 (TCK)

(1)

JTAG Short : Routes the on-board emulator to the CC3200

J9 (TMS)

(1)

J10 (TDI) Open: Isolate the on-board emulator from the CC3200.

J11(TDO)

(1)

For the SWD mode, only TCK and TMS need to be shorted to the CC3200.

When a battery is used, be sure to disconnect all the JTAG headers to prevent any reverse leakage

current.

2.4.2 I2C Connections

The board features an accelerometer and a temperature sensor for the out-of-box demo. These are

connected to the I2C bus and can be isolated using the jumpers provided.

Figure 5. I2C Connections

By removing J2 and J3, the accelerometer and the temperature sensors are isolated from the I2C bus.

Note that this also removes any pull-up resistor from the I2C bus.

2.4.2.1 Jumper Settings

Table 2. Jumper Settings

Reference Usage Comments

J2 I2C SDA Short : Connect the CC3200 I2C bus to the on-board sensors with pull-up

Open : Isolate the sensors from the CC3200

J3 I2C SCL Short : Connect the CC3200 I2C bus to the on-board sensors with pull-up

Open : Isolate the sensors from the CC320

J4 INT Short : Connect the accelerometer interrupt to the CC3200 on GPIO13

2.4.2.2 Default I2C Address

CC3200 SimpleLink™ Wi-Fi

and IoT Solution with MCU LaunchPad SWRU372–June 2014

Hardware

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