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The CC2540 USB Evaluation Module Kit contains one CC2540 Bluetooth low energy USB Dongle. The dongle can be used to enable Bluetooth low energy on your PC. It can also be used as a packet sniffer for analyzing the BLE protocol and for software and system level. If drivers were not downloaded automatically by Windows Update, use Device Manager to refresh the driver from Windows Update, or contact the device manufacturer. I’m Moli, your virtual agent. I can help with Moto phone issues. TI CC2540 USB CDC Serial Port (COM3) - Driver Download. Vendor: Texas Instruments. Product: TI CC2540 USB CDC Serial Port (COM3). Hardware Class: Ports. Search For More Drivers.: Go! PC Matic Newsletter. Our weekly newsletter is packed with computer tips & tricks. If your device belongs to the Communications and CDC Control device class, Usbser.sys is loaded automatically.You do not need to write your own INF to reference the driver. The driver is loaded based on a compatible ID match similar to other USB device class drivers included in Windows. USB Class02&SubClass02. Download the LaunchPad drivers for Windows: LaunchPad CDC drivers zip file for Windows 32 and 64 bit. This driver package will install all drivers for all LaunchPads. Unzip and double click 'Install Energia Drivers for Windows 32 bit' for Windows 32 bit or 'Install Energia Drivers for Windows 64 bit' for Windows 64 bit.

Bluetooth Low Energy Wiki Main Page

This page describes some common configurations when using a CC254x in combination with an external MCU.

Overview[edit]

Name	Description	Advantages	Disadvantages
Network Processor	External MCU drives application using CC254x HCI API. GATT database is stored on chip.	Prebuilt image available No IAR programming required Standard API	No custom profile support
Network Processor GATT_DB_OFF_CHIP	External MCU drives application using CC254x HCI API. GATT database is stored off chip.	Based off standard HostTestRelease project Custom profile allowed Standard API	Must compile with GATT_DB_OFF_CHIP config EXT MCU must handle all data read and writes
Network Processor Custom	HostTestRelease project modified to add custom profile and commands	Based off standard HostTestRelease project Custom profile support Standard API supported Custom command support	Must modify code on CC254X to add profiles Must modify code on CC254X to add commands
Stand Alone App with Serial Interface	Full stack, app and profiles with serial interface. Data can be passed between MCU and CC254X over user defined API.	Can be optimized for minimal serial traffic Logic can be divided between EXT MCU and CC2540 Easily leverage existing examples and certified profiles	Must define and implement serial API

Network Processor[edit]

The HostTestRelease project (included with standard BLE SDK) is the standard BLE Network Processor application. It can be loaded on the CC2540 or CC2541, with the any of the following used as a network processor interface:

1. UART
2. SPI
3. USB CDC virtual UART (CC2540 only)

More information on the HostTestRelease project can be found in the CC254x BLE Software Developer's Guide (http://www.ti.com/lit/pdf/swru271). An overview of the HCI command protocol can be found in the TI BLE Vendor Specific HCI Guide, which is linked from the Windows Start Menu after you have installed the SDK.

For applications which only act as a GATT client and do not need to act as a GATT server, this is an ideal choice.

Network Processor GATT_DB_OFF_CHIP[edit]

The HostTestRelease project has an option that can be enabled by including the preprocessor define 'GATT_DB_OFF_CHIP' to the project configuration (under compiler settings). By adding this define, the network processor will be built such that any GATT services are maintained by the external MCU. This includes handling of all peer GATT requests to read, write, and discover services and characteristics.

This option provides for maximum flexibility of the GATT server by the MCU; however the code required on the external MCU is fairly complex.

More information on this type of setup can be found here: http://processors.wiki.ti.com/index.php/LPRF_BLE_NPGATT

Network Processor Custom[edit]

Rather than using GATT_DB_OFF_CHIP, another possibility is to manually add your GATT profiles to the HostTestRelease project, and rebuild the project with the services integrated into the network processor. This reduces the complexity of the external MCU code; however it requires the ability to add custom commands to the network processor in order to allow the external MCU to manage the data in the GATT services.

More information on this type of setup can be found here: http://processors.wiki.ti.com/index.php/BLE_HostTest_Add_Cmds

Stand Alone App with Serial Interface[edit]

Instead of using the HostTestRelease network processor project, another option is to take one of the existing single-chip projects included in the BLE SDK (e.g SimpleBLEPeripheral, HeartRate, RunningSensor, etc...) and modify it to include a 'UART bridge' or a 'SPI bridge', giving the external MCU the ability to communicate with the CC254x.

In addition to creating the brige using the HAL UART or HAL SPI drivers, a communication protocol must be established, allowing the external MCU to send commands to the CC254x (e.g. start advertising, send notification, etc...). It also must allow the CC254x to send event to the external MCU when specific actions occur (e.g. connection established, connection terminated, etc...). For many applications this protocol can be very simple and just consist of a few key commands and events.

More information on this type of setup can be found here: http://processors.wiki.ti.com/index.php/SimpleBLEPeripheral_SerialInterface

Other UART Configurations[edit]

Ti Cc2540 Dongle Driver

See the following wiki page for all 4 UART configuations: http://processors.wiki.ti.com/index.php/All_4_uart_configs

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For technical support on MultiCore devices, please post your questions in the C6000 MultiCore Forum
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