DVK-BT860-ST

A Datasheet BT860 Development Kit Applicable to the following Laird part numbers: - DVK-BT860-SA – Integrated antenna version - DVK-BT860-ST – Trace pin for external antenna version Version 1.0 BT860 Development Kit Datasheet REVISION HISTORY Version Date 1.0 12 Jan 2018 Notes Contributor(s) Initial version Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth Raymond Au Raj Khatri Approver Jacky Kuo Shewan Yitayew 2 © Copyright 2018 Laird. All Rights Reserved Jonathan Kaye Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT860 Development Kit Datasheet CONTENTS 1 Overview ................................................................................................................................................................ 4 2 Introduction ........................................................................................................................................................... 4 2.1. Package Contents ......................................................................................................................................... 4 2.2. DVK-BT860 – Main Development Board ...................................................................................................... 4 3 Getting to Know the Development Board.............................................................................................................. 5 4 Power Supply.......................................................................................................................................................... 5 5 Interface Specification............................................................................................................................................ 6 6 Other Features ..................................................................................................................................................... 10 6.1. Current Consumption Measurement ........................................................................................................... 10 7 Additional Documentation ................................................................................................................................... 11 Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 3 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT860 Development Kit Datasheet 1 OVERVIEW Laird’s Development Kit (DVK-BT860-Sx) provides a platform for rapid prototyping of BT860 series modules. The development board provides simple, easy to use access to the various hardware interfaces and configuration options for the module. The DVK is the perfect platform to provide for early development testing of the BT860 module series features and functionality, prior to designing the module onto a host PCB. This manual is for the development PCB which is DVK-BT860 1.0 on PCB. 2 INTRODUCTION The Laird DVK-BT860 is designed to support the rapid development of applications and evaluation for the specific Laird Bluetooth module part number BT860-Sx. In-depth documentation for thismodule series is available from the BT860 series product page: https://www.lairdtech.com/products/bt860-uart-ble-module 2.1. Package Contents Each DVK-BT860 contains the following items: Development Motherboard The motherboard has the appropriate BT860 module already soldered down onto it and all available hardware interfaces are exposed. USB Cable – USB A type male to Micro-USB type The USB cable can be used to power, control, and configure the BT860. Stand-off Screw nuts (4); Stand-off (4) Pin Header Fly Leads Leads for easy prototyping into host board (6) Provides links to additional information including BT860 User Manual, Utilities, Schematics, and Quick Start Guides. Only supplied with DVK-BT860-ST. Antenna supplied is Laird part # 0600-00040. Insert card External antenna 2.2. DVK-BT860 – Main Development Board The development board allows the BT860 module to be easily connected to a PC. The development board provides USB to UART converter linking to USB connector and the BT860 UART HCI interface. Any Windows PC (Windows 7 or later) auto-installs the necessary drivers and if your PC can not locate the drivers, you can download them from http://www.ftdichip.com/Products/FT232R.htm. Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 4 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT860 Development Kit Datasheet 3 GETTING TO KNOW THE DEVELOPMENT BOARD Figure 1: Main DVK-BT860 board 4 POWER SUPPLY Table 1: Input voltage Minimum Typical Maximum 4.5V 5V 5.5V Input Voltage Power supply options for powering development board from: ▪ ▪ USB External DC supply The DVK-BT860-Sx includes a USB cable to provide power to the development board. This should be plugged into a PC USB port, a USB hub, or a mains adaptor with a USB output. If a hub is used, it should be a powered USB hub to ensure that sufficient current is available at the port. The BT860-Sx module can be driven by the available current at a USB port. The low noise LDO (U7) on the DVK-BT860-Sx provides the 3.3V out to support the whole board’s operating voltage. Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 5 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT860 Development Kit Datasheet 5 INTERFACE SPECIFICATION 5.1. GPIOs (PIN HEADER – J11 and J12) There are four GPIO signals (GPIO[1; 5; 6; 7]) presented on pin header J11 and J12 individual. These can be used for an LED indicator or Cypress GCI (Global Coexistence Interface) or BT_HOST_WAKEUP. The following are the default settings by firmware on the BT860-Sx (Table 2). Table 2: J11 and J12 pin headers GPIO Number GPIO_1 GPIO_5 GPIO_6 GPIO_7 Function BT_HOST_WAKEUP LED indications Cypress GCI; BT_SECI_IN (same as WLAN_Activity) Cypress GCI; BT_SECI_OUT (same as BT_Activity) Note 1: All GPIOs functions are configured by firmware and any changes from the defaults would require a new firmware load. The pin descriptions of J11 and J12 are shown in Table 3 and Table 4. Pin-1 is marked with a square pad. Table 3: J11 pin descriptions J11 Pin-1 Description GPIO[1] Direction O Description GPIO[5] GPIO[7] GPIO[6] Direction O O I Table 4: J12 pin descriptions J12 Pin-1 Pin-3 Pin-4 There are four LED indicators on the DVK-BT860-Sx asshown in Table 5. Table 5: LEDs description and functions LEDs LED1 LED2 LED3 LED4 Description Connected to the BT_SECI_I Connected to the BT_SECI_OUT Connected to the output of the U4 (LDO) Function Cypress GCI indication Cypress GCI indication 3.3V power supply rail indication For BT860-Sx status indications including inquiry, connected, and data traffic. ▪ When in inquiry mode, the LED BR/EDR Modes flashes with one-second periods. Connected to GPIO_5 LE Mode Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 6 © Copyright 2018 Laird. All Rights Reserved ▪ When the BT connection is created, the LED is in a solid light state ▪ When the BT has data traffic, the LED flashes with 250 ms periods ▪ When in inquiry mode, the LED is flashing with 1 second periods. ▪ When the BT connection is created, the LED is in a solid light ▪ When the BT has data traffic, the LED is flashing with 250 ms periods Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT860 Development Kit Datasheet Figure 2: Pin headers - J11 and J12 Figure 3: LED1 Figure 4: LED2, LED3, LED4 PLEASE NOTE – The LED4 status configuration is controlled by firmware, any changes from the above default, please contact Laird. 5.2. PCM/I2S Interface (Pin Header – J11) The DVK-BT860-Sx has a four-wire digital audio port capable of operating in PCM or I2S mode; it is a dedicated audio interface and cannot be used as general purpose GPIOs. Figure 5: Pin header J11 Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 7 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT860 Development Kit Datasheet The pin descriptions of J11 in PCM/I2S are shown in 6. Table 6: J11 descriptions for PCM/I2S interface Description (PCM/I2S/SPI) J11 2 Pin-2 PCM_SYNC/I S_WS Pin-3 Direction I/O 2 I/O 2 PCM_CLK/I S_CLK Pin-4 PCM_IN/I S_DI Input Pin-5 PCM_OUT/I2S_OUT Output Pin-6 GND 5.3. 4-Wire UART Serial Interface The DVK-BT860-Sx provides access to the TTL level HCI interface of the BT860-Sx module through pin header J10 (Figure 6) or through USB (via U9 FTDI USB-UART convertor chip). The default configuration is USB. Figure 6: Pin header J10 Note: When you use the J10 to access the BT860-Sx module, you must remove all of the J18 jumpers. The pins of header J10 are detailed in Table 6. Table 6: J10 descriptions J10 Description (UART) Pin 1 GND Pin 2 Module_RTS Pin 3 NA Pin 4 Module_RX Input Pin 5 Module_TX Output Pin 6 Module_CTS Input Note: Direction Output For a 3-wire interface, you can leave RTS/CTS floating. You can use just TX, RX and GND pin to access the module. Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 8 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT860 Development Kit Datasheet 5.3.1. UART Interface Driven by USB USB Connector The development kit provides a USB Type micro-USB connector (USB1) which allows connection to any USB host device. The connector optionally supplies power to the DVKBT860-Sx when SW4 is set to the USB position. The USB signals are connected to a USB to serial convertor device (FT232R) (Figure 7). USB – UART The development kit is fitted with a (U9) FTDI FT232R USB to UART converter which provides USB-to-Virtual COM port on any Windows PC (Win 7 or later). Upon connection, Windows auto-installs the required drivers. For more details and driver downloads, visit http://www.ftdichip.com/Products/FT232R.htm. UART Interface driven by USB FTDI chip UART interface driven by USB FTDI chip. In normal operation, the BT860-SxHCI interface is driven by the FTDI FT232R USB to UART converter. Note: Before using the 4-wire UART through J10, place the jumper on J16 to disable the function of FT232R. Figure 7: Micro-USB Connector (USB1), FT232R (U9), SW4, and J16 5.4. Push Button SW2 (push button TACT switch) provides a reset signal to reset the BT860-Sx module (Error! Reference source not found.). Push Button Label on DVK-BT860 PCB Description SW2 Reset Reset the BT860-Sx module Figure 8: SW2 Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 9 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT860 Development Kit Datasheet 6 OTHER FEATURES 6.1. Current Consumption Measurement A removable jumper (J17) is provided to break the power supply line directly to the module (if SB9 is cut), allowing you to measure current consumption. For normal operation, J17 must be fitted. Figure 9 shows the locations of SB9 and J17. Note: This measures the current consumption of the BT860-Sx series module ONLY. Figure 9: Current measurement circuit To prepare the board for current measurement, cut the shorting of the solder bridge SB9. After this modification, there are two primary ways to measure the current consumption: ▪ ▪ Using Ammeter – Connect an ampere meter between the two pins of connector J17. This directly monitors the current. Using Oscilloscope (Note below) – Mount a resistor on the footprint R28. The resistor should not be larger than 10 Ohm. Connect an oscilloscope or similar with two probes on the pin on the J17 connector and measure the voltage drop. The voltage drop is proportional with current consumption. If a 1 Ohm resistor is chosen, 1 mV equals 1 mA. There is also a third way to measure current: ▪ Using Current Shunt Monitor – The current drawn by the BT860-Sx module can be monitored using the Current Shunt Monitor (CSM), INA216 (U8). The gain of INA216 is 200 V/V for lowest possible drop voltage. Note: The Current Shunt Monitor method allows the dynamic current consumption waveforms on oscilloscope as the BT860-Sx radio operates. This can provide insight into power optimization. Current consumed by the BT860-Sx series module is measured as a voltage (that is proportional to the current) using the CSM by connecting measuring voltmeter or oscilloscope to TP14 Connect measuring voltmeter or oscilloscope GND to TP15. I(mA) = Vmeas_TP14(mV) /51 CAUTION: To avoid permanently damaging the current shunt monitor IC U8, do not short the TP14 output to GND. Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 10 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610 BT860 Development Kit Datasheet 7 ADDITIONAL DOCUMENTATION Laird offers a variety of documentation and ancillary information to support our customers through the initial evaluation process and ultimately into mass production. Additional documentation can be found at the BT860 product page under the documentation tab. It includes: ▪ ▪ ▪ BT860 – Class 1 BT4.2 Dual Mode HCI module – Product brief BT860 Datasheet - Hardware Integration Guide BT860 Using the BT860 with the BlueZ Linux BCCMD tool © Copyright 2018 Laird. All Rights Reserved. Patent pending. Any information furnished by Laird and its agents is believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use and application of Laird materials or products rests with the end user since Laird and its agents cannot be aware of all potential uses. Laird makes no warranties as to non-infringement nor as to the fitness, merchantability, or sustainability of any Laird materials or products for any specific or general uses. Laird, Laird Technologies, Inc., or any of its affiliates or agents shall not be liable for incidental or consequential damages of any kind. All Laird products are sold pursuant to the Laird Terms and Conditions of Sale in effect from time to time, a copy of which will be furnished upon request. When used as a tradename herein, Laird means Laird PLC or one or more subsidiaries of Laird PLC. Laird™, Laird Technologies™, corresponding logos, and other marks are trademarks or registered trademarks of Laird. Other marks may be the property of third parties. Nothing herein provides a license under any Laird or any third party intellectual property right. Embedded Wireless Solutions Support Center: http://ews-support.lairdtech.com www.lairdtech.com/bluetooth 11 © Copyright 2018 Laird. All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2923 0610