ATSAMB11-XPRO

ATSAMB11 BluSDK SMART SAM B11 Xplained Pro USER GUIDE Preface ® The Atmel SAM B11 Xplained Pro evaluation kit is a hardware platform to evaluate the ATSAMB11G18A microcontroller. Supported by the Atmel Studio integrated development platform, the kit provides easy access to the features of the Atmel ATSAMB11G18A and explains how to integrate the device in a custom design. The Xplained Pro MCU series evaluation kits include an on-board Embedded Debugger, and no external tools are necessary to program or debug the ATSAMB11G18A. The Xplained Pro extension kits offers additional peripherals to extend the features of the board and ease the development of custom designs. Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 Table of Contents Preface............................................................................................................................ 1 1. Introduction................................................................................................................ 3 1.1. 1.2. Features....................................................................................................................................... 3 Kit Overview................................................................................................................................. 3 2. Getting Started...........................................................................................................5 2.1. 2.2. Xplained Pro Quick Start.............................................................................................................. 5 Design Documentation and Relevant Links................................................................................. 5 3. Xplained Pro.............................................................................................................. 6 3.1. 3.2. 3.3. 3.4. 3.5. 3.6. Xplained Pro.................................................................................................................................6 Embedded Debugger................................................................................................................... 6 Xplained Pro Analog Module........................................................................................................7 3.3.1. Overview........................................................................................................................7 3.3.2. EDBG Interface..............................................................................................................8 3.3.3. Sample Rate.................................................................................................................. 8 3.3.4. Measurement Ranges and Accuracy.............................................................................8 Hardware Identification System....................................................................................................9 Power Sources............................................................................................................................. 9 Xplained Pro Headers and Connectors......................................................................................10 3.6.1. Xplained Pro Standard Extension Header................................................................... 10 3.6.2. Xplained Pro Power Header.........................................................................................11 4. Hardware User Guide.............................................................................................. 12 4.1. Connectors................................................................................................................................. 12 4.1.1. Xplained Pro Extension Headers.................................................................................12 4.1.2. VDDIO Header.............................................................................................................14 4.1.3. Current Measurement Header..................................................................................... 14 4.1.4. Cortex Debug Connector............................................................................................. 14 4.2. Peripherals................................................................................................................................. 15 4.2.1. Crystals........................................................................................................................15 4.2.2. Mechanical Buttons..................................................................................................... 15 4.2.3. LED..............................................................................................................................16 4.2.4. Debug I2C and UART.................................................................................................. 16 4.3. 4.2.5. Battery header............................................................................................................. 16 4.2.6. Temperature Sensor.................................................................................................... 17 Embedded Debugger Implementation........................................................................................17 4.3.1. Serial Wire Debug........................................................................................................17 4.3.2. Virtual COM Port..........................................................................................................17 4.3.3. Atmel Data Gateway Interface.....................................................................................18 4.3.4. SAM B11 Xplained Pro XAM Configuration................................................................. 18 5. Document Revision History..................................................................................... 20 Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 2 1. Introduction 1.1. Features • • • • • • • • • • • • 1.2. ATSAMB11G18A microcontroller Bluetooth Host and Device mode One mechanical reset button One mechanical programmable button One yellow user LED Battery header (1x2 100mil header) 32.768kHz crystal Two Xplained Pro extension headers Embedded Debugger – Auto-ID for board identification in Atmel Studio – One yellow status LED – One green board power LED – Symbolic debug of complex data types icluding scope information – Programming and debugging, including power measurements – Data Gateway Interface: SPI, I2C, four GPIOs – Virtual COM port (CDC) Embedded current measurement circuitry, with Atmel Data Visualizer support for data visualization USB powered Supported with application examples in Atmel Software Framework Kit Overview The Atmel SAM B11 Xplained Pro evaluation kit is a hardware platform to evaluate the Atmel ATSAMB11G18A. The kit offers a set of features that enables the ATSAMB11G18A user to get started with the SAM B peripherals right away and to get an understanding of how to integrate the device in their own design. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 3 Figure 1-1. SAM B11 Xplained Pro Evaluation Kit Overview Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 4 2. Getting Started 2.1. Xplained Pro Quick Start Steps to start exploring the Atmel Xplained Pro platform: 1. Download Atmel Studio. 2. Launch Atmel Studio. 3. Connect a USB cable (Standard-A to Micro-B or Micro-AB) between the PC and the DEBUG USB port on the kit. When the Xplained Pro MCU kit is connected to your computer for the first time, the operating system will ® perform a driver software installation. The driver file supports both 32- and 64-bit versions of Microsoft ® ® Windows XP, Windows Vista , Windows 7, and Windows 8. Once the Xplained Pro MCU board is powered the green power LED will be lit and Atmel Studio will auto detect which Xplained Pro MCU- and extension board(s) are connected. Atmel Studio will present relevant information like datasheets and kit documentation. The kit landing page in Atmel Studio also has the option to launch Atmel Software Framework (ASF) example applications for the kit. The SAM B11 device is programmed and debugged by the on-board Embedded Debugger and therefore no external programmer or debugger tool is needed. 2.2. Design Documentation and Relevant Links The following list contains links to the most relevant documents and software for the SAM B11 Xplained Pro. • • • • • • Xplained Pro products - Atmel Xplained Pro is a series of small-sized and easy-to-use evaluation kits for Atmel microcontrollers and other Atmel products. It consists of a series of low-cost MCU boards for evaluation and demonstration of features and capabilities of different MCU families. Atmel Studio - Free Atmel IDE for development of C/C++ and assembler code for Atmel microcontrollers. Atmel sample store - Atmel sample store where you can order samples of devices. EDBG User Guide - User guide containing more information about the on-board Embedded Debugger. ® ® IAR Embedded Workbench for ARM - This is a commercial C/C++ compiler that is available for ® ARM . There is a 30 day evaluation version as well as a code size limited kick-start version available from their website. The code size limit is 16KB for devices with M0, M0+, and M1 cores and 32KB for devices with other cores. Atmel Data Visualizer - Atmel Data Visualizer is a program used for processing and visualizing data. Data Visualizer can receive data from various sources such as the Embedded Debugger Data Gateway Interface found on Xplained Pro boards and COM ports. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 5 3. Xplained Pro 3.1. Xplained Pro Xplained Pro is an evaluation platform that provides the full Atmel microcontroller experience. The platform consists of a series of Microcontroller (MCU) boards and extension boards, which are integrated with Atmel Studio, have Atmel Software Framework (ASF) drivers and demo code, support data streaming, and more. Xplained Pro MCU boards support a wide range of Xplained Pro extension boards, which are connected through a set of standardized headers and connectors. Each extension board has an identification (ID) chip to uniquely identify which boards are connected to an Xplained Pro MCU board. This information is used to present relevant user guides, application notes, datasheets, and example code through Atmel Studio. 3.2. Embedded Debugger The SAM B11 Xplained Pro contains the Atmel Embedded Debugger (EDBG) for on-board debugging. The EDBG is a composite USB device of three interfaces; a debugger, Virtual COM Port, and a Data Gateway Interface (DGI). Together with Atmel Studio, the EDBG debugger interface can program and debug the ATSAMB11G18A. On SAM B11 Xplained Pro, the SWD interface is connected between the EDBG and the ATSAMB11G18A. The Virtual COM Port is connected to a UART on the ATSAMB11G18A and provides an easy way to communicate with the target application through terminal software. It offers variable baud rate, parity, and stop bit settings. Note that the settings on the ATSAMB11G18A must match the settings given in the terminal software. Info:  The virtual COM port in the EDBG requires the terminal software to set the data terminal ready (DTR) signal to enable the UART pins connected to the ATSAMB11G18A. If the DTR signal is not enabled the UART pins on the EDBG is kept in high-z (tristate) rendering the COM port unusable. The DTR signal is set automatically by some terminal software, but it may have to be manually enabled in your terminal. The DGI consists of several physical interfaces for communication with the host computer. Communication over the interfaces is bidirectional. It can be used to send events and values from the ATSAMB11G18A or as a generic printf-style data channel. Traffic over the interfaces can be timestamped on the EDBG for more accurate tracing of events. Note that timestamping imposes an overhead that reduces maximal throughput. Atmel Data Visualizer is used to send and receive data through DGI. The EDBG controls two LEDs on SAM B11 Xplained Pro; a power LED and a status LED. The table below shows how the LEDs are controlled in different operation modes. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 6 Table 3-1. EDBG LED Control Operation mode Power LED Status LED Normal operation Power LED is lit when power is applied to the board. Activity indicator, LED flashes when any communication happens to the EDBG. Bootloader mode (idle) The power LED and the status LED blinks simultaneously. Bootloader mode (firmware upgrade) The power LED and the status LED blinks in an alternating pattern. For further documentation on the EDBG, see the EDBG User Guide. Xplained Pro Analog Module 3.3.1. Overview The Xplained Pro Analog Module (XAM) extends the embedded debugger with high dynamic range current measurement. This enables power profiling of the target system. Current output 3.3. Calibration circuitry GPIO(s) Control MCU Sync GPIO I2C Calibration ON/OFF GPIO SPI EDBG Clock sync Range selection voltage reference 2.7V SWD AREF 100 Ohm 100 mOhm Pre-amplifier 2x ADC0 ADC1 20x20x S&H ADC 16x GND Active filter with gain Current input GPIO Xplained Pro Analog Module (XAM) The XAM consists of: • • • • Calibration circuitry Voltage reference Analog frontend – Shunt resistors with a range selection switch – Pre-amplifier – Two active filters with gain Control MCU Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 7 – – – Analog to digital converter Signal processing Control/communication interface to the EDBG The current measurement frontend is a high side shunt measurement with a pre-amplifier and a second active filter stage with gain. The wide dynamic range is achieved by four measurement ranges which are defined by two shunts and the two parallel second stage active filters with gain. 3.3.2. EDBG Interface The Xplained Pro Analog Module (XAM) is connected to the EDBG with the following interfaces: • • • • • • I2C: This is used to control and configure the XAM SPI: Current measurement data is streamed to the EDBG via this interface. This is a one-way data transfer channel from the XAM to the EDBG SWD: The MCU in the XAM is programmed via SWD from the EDBG GPIO: At least one GPIO that is connected to the EDBG from the target MCU is also connected to the current measurement unit to enable the user to sync current measurements with his application Clock sync: Synchronization signal to synchronize ADC measurements with EDBG Reference clock: Reference clock for the XAM 3.3.3. Sample Rate The raw sampling rate of the Xplained Pro analog module (XAM) is up to 250kHz and with the default averaging configuration (average of 16 samples) the actual output of the XAM is 16.67kSPS (note that the XAM output sample rate is not an integer fraction of the raw sampling). 3.3.4. Measurement Ranges and Accuracy The Xplained Pro analog module has four measurement ranges. These are defined by two shunt resistors and two gain stages. Measurement range Hardware Resolution Accuracy Comments Range 1 Low current shunt and high gain stage 20nA 1 LSB ±1% Below 1μA the error will increase. Typical error for 300nA is 1 LSB ± 10% Range 2 Low current shunt and low gain stage 150nA 1 LSB ±1% Range 3 High current shunt and high gain stage 10μA 1 LSB ±1% Range 4 High current shunt and low gain stage 100μA 1 LSB ±1% Above 100mA the error will increase to 1 LSB ±5% at 400mA. Maximum current is 400mA The ranges are switched automatically by the XAM to achieve best measurement results and the currently active range is visualized in the Atmel Data Visualizer frontend tool. The maximum voltage drop over the shunt resistor is 100mV and the XAM will switch the range automatically before this limit is reached. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 8 3.4. Hardware Identification System ™ All Xplained Pro compatible extension boards have an Atmel ATSHA204 CryptoAuthentication chip mounted. This chip contains information that identifies the extension with its name and some extra data. When an Xplained Pro extension is connected to an Xplained Pro MCU board the information is read and sent to Atmel Studio. The Atmel Kits extension, installed with Atmel Studio, will give relevant information, code examples, and links to relevant documents. The table below shows the data fields stored in the ID chip with example content. Table 3-2. Xplained Pro ID Chip Content 3.5. Data field Data type Example content Manufacturer ASCII string Atmel'\0' Product Name ASCII string Segment LCD1 Xplained Pro'\0' Product Revision ASCII string 02'\0' Product Serial Number ASCII string 1774020200000010’\0’ Minimum Voltage [mV] uint16_t 3000 Maximum Voltage [mV] uint16_t 3600 Maximum Current [mA] uint16_t 30 Power Sources The SAM B11 Xplained Pro kit can be powered by several power sources as listed in the table below. Table 3-3. Power Sources for SAM B11 Xplained Pro Power input Voltage requirements Current requirements Connector marking External power 5V ±2% (±100mV) for USB host operation. 4.3V to 5.5V if USB host operation is not required. Recommended minimum is 1A to be able to provide enough current for connected USB devices and the board itself. Recommended maximum is 2A due to the input protection maximum current specification. PWR Embedded debugger USB 4.4V to 5.25V (according 500mA (according to to USB spec.) USB spec.) DEBUG USB The kit will automatically detect which power sources are available and choose which one to use according to the following priority: 1. 2. External power. Embedded Debugger USB. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 9 Note:  The selection for the supply of the Target MCU has a separate connector. The above priority selects which supply is used to power the EDBG and the VCC_P3V3_CON. Info:  External power is required when 500mA from a USB connector is not enough to power the board with possible extension boards. A connected USB device in a USB host application might easily exceed this limit. 3.6. Xplained Pro Headers and Connectors 3.6.1. Xplained Pro Standard Extension Header All Xplained Pro kits have one or more dual row, 20-pin, 100mil extension header. Xplained Pro MCU boards have male headers, while Xplained Pro extensions have their female counterparts. Note that all pins are not always connected. All connected pins follow the defined pin-out description in the table below. The extension headers can be used to connect a variety of Xplained Pro extensions to Xplained Pro MCU boards or to access the pins of the target MCU on Xplained Pro MCU boards directly. Table 3-4. Xplained Pro Standard Extension Header Pin number Name Description 1 ID Communication line to the ID chip on an extension board 2 GND Ground 3 ADC(+) Analog to digital converter, alternatively positive part of differential ADC 4 ADC(-) Analog to digital converter, alternatively negative part of differential ADC 5 GPIO1 General purpose I/O 6 GPIO2 General purpose I/O 7 PWM(+) Pulse width modulation, alternatively positive part of differential PWM 8 PWM(-) Pulse width modulation, alternatively negative part of differential PWM 9 IRQ/GPIO Interrupt request line and/or general purpose I/O 10 SPI_SS_B/ GPIO Slave select for SPI and/or general purpose I/O 11 I2C_SDA Data line for I2C interface. Always implemented, bus type. 12 I2C_SCL Clock line for I2C interface. Always implemented, bus type. 13 UART_RX Receiver line of target device UART 14 UART_TX Transmitter line of target device UART 15 SPI_SS_A Slave select for SPI. Should preferably be unique. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 10 3.6.2. Pin number Name Description 16 SPI_MOSI Master out slave in line of serial peripheral interface. Always implemented, bus type. 17 SPI_MISO Master in slave out line of serial peripheral interface. Always implemented, bus type. 18 SPI_SCK Clock for serial peripheral interface. Always implemented, bus type. 19 GND Ground 20 VCC Power for extension board Xplained Pro Power Header The power header can be used to connect external power to the SAM B11 Xplained Pro kit. The kit will automatically detect and switch to any external power if supplied. The power header can also be used as supply for external peripherals or extension boards. Care must be taken not to exceed the total current limitation of the on-board regulator when using the 3.3V pin. Table 3-5. Xplained Pro Power Header Pin number Pin name Description 1 VEXT_P5V0 External 5V input 2 GND Ground 3 VCC_P5V0 Unregulated 5V (output, derived from one of the input sources) 4 VCC_P3V3 Regulated 3.3V (output, used as main power supply for the kit) Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 11 4. Hardware User Guide 4.1. Connectors The following sections describes the implementation of the relevant connectors and headers on SAM B11 Xplained Pro and their connection to the ATSAMB11G18A. The tables of connections in the sections also describes which signals are shared between the headers and on-board functionality. 4.1.1. Xplained Pro Extension Headers The SAM B11 Xplained Pro headers EXT1 and EXT3 offers access to the I/O of the microcontroller in order to expand the board e.g., by connecting extensions to the board. These headers are based on the standard extension header specified in Table 3-4 Xplained Pro Standard Extension Header on page 10 . The headers have a pitch of 2.54mm Table 4-1. Extension Header EXT1 EXT1 pin SAM B11 Function pin Shared functionality 1 [ID] - - Communication line to the ID chip on an extension board 2 [GND] - - Ground 3 [ADC(+)] GPIO_M S1 ADC 4 [ADC(-)] GPIO_M S2 ADC 5 [GPIO1] GPIO4 GPIO 6 [GPIO2] AO_GPIO GPIO/IRQ _2 7 [PWM(+)] - - 8 [PWM(-)] - - 9 [IRQ/GPIO] AO_GPIO IRQ/GPIO _0 10 [SPI_SS_B/GPIO] GPIO_5 GPIO EDBG SPI Temperature Sensor on page 17 11 [TWI_SDA] LP_GPIO I²C SDA _8 EDBG I²C, Temperature Sensor 12 [TWI_SCL] LP_GPIO I²C SCL _9 EDBG I²C, Temperature Sensor 13 [USART_RX] LP_GPIO UART1 RXD _2 14 [USART_TX] LP_GPIO UART TXD _3 Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 12 EXT1 pin SAM B11 Function pin Shared functionality 15 [SPI_SS_A] LP_GPIO SPI_SSN _12 16 [SPI_MOSI] LP_GPIO SPI MOSI _11 EDBG SPI 17 [SPI_MISO] LP_GPIO SPI MISO _13 EDBG SPI 18 [SPI_SCK] LP_GPIO SPI SCK _10 EDBG SPI 19 [GND] - - Ground 20 [VCC] - - Power for extension board Table 4-2. Extension Header EXT3 EXT3 pin SAM B11 Function pin Shared functionality 1 [ID] - - Communication line to the ID chip on an extension board 2 [GND] - - Ground 3 [ADC(+)] GPIO_M S3 ADC 4 [ADC(-)] GPIO_M S4 ADC 5 [GPIO1] LP_GPIO GPIO _20 6 [GPIO2] - - 7 [PWM(+)] - - 8 [PWM(-)] - - 9 [IRQ/GPIO] AO_GPIO IRQ/GPIO _1 10 [SPI_SS_B/GPIO] - EDBG GPIO3 - 11 [TWI_SDA] LP_GPIO I²C SDA _14 DEBUG I²C 12 [TWI_SCL] LP_GPIO I²C SCL _15 DEBUG I²C 13 [USART_RX] LP_GPIO UART2 RX _6 DEBUG UART 14 [USART_TX] LP_GPIO UART2 TX _7 DEBUG UART Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 13 4.1.2. EXT3 pin SAM B11 Function pin Shared functionality 15 [SPI_SS_A] LP_GPIO SPI1 SSN _16 16 [SPI_MOSI] LP_GPIO SPI1 MOSI _19 17 [SPI_MISO] LP_GPIO SPI1 MISO _18 18 [SPI_SCK] LP_GPIO SPI1 SCK _17 19 [GND] - - Ground 20 [VCC] - - Power for extension board VDDIO Header The SAM B11 Xplained Pro has a 2-pin header connecting the power supply from the VCC_MCU net to VCC_IO net through a jumper. This header can be used to measure the current to the I/O block of the SAM B11 device by removing the jumper and connect an ammeter. SAM B11 has the possibility to run the I/O block at a lower voltage level than the MCU is running and thus support interfacing devices that require lower operating voltages. The header can then be used to power the VCC_IO pin at a different voltage level by removing the jumper and connecting a power supply with the desired voltage. Refer to the datasheet of the device for valid operating voltages. Table 4-3. VDDIO Header 4.1.3. VDDIO header pin Function 1 VCC_MCU power supply 2 VCC_IO power input Current Measurement Header An angled 1x2, 100mil pin-header marked with MCU current measurement is located at the upper edge of the SAM B11 Xplained Pro. All power to the ATSAMB11G18A is routed through this header. To measure the power consumption of the device remove the jumper and replace it with an ammeter. Caution:  Removing the jumper from the pin-header while the kit is powered may cause the ATSAMB11G18A to be powered through its I/O pins. This may cause permanent damage to the device. 4.1.4. Cortex Debug Connector ® SAM B11 Xplained Pro has a 10-pin 50-mil Cortex Debug Connector that can be used to attach external debuggers to the ATSAMB11G18A. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 14 Table 4-4. Cortex Debug Connector Cortex Debug Connector pin Pin / Net Function Shared functionality 1 VCC_TARGET_P3V3 ATSAMB11G18A voltage 2 GPIO_1 SWD data signal 3 GND Ground 4 GPIO_2 SWD clock signal 5 GND Ground 6 - - 7 - - 8 - - 9 GND Ground 10 RESETN Target reset signal EDBG SWD EDBG SWD The Target reset is isolated from the Cortex Debug Connector by R300 (0 Ohm link) which is not mounted by default in the PCBA 4.2. Peripherals 4.2.1. Crystals The SAM B11 Xplained Pro kit contains one mounted 32.768kHz crystal that can be used as clock sources for the SAM B11. The crystal has cut-straps next to them that can be used to measure the oscillator safety factor. This is done by cutting the strap and adding a resistor across the strap. Information about oscillator allowance and safety factor can be found in application note AVR41001, information about clock calibration and compensation can be found in application note AT03155. The footprint for the external crystal is based on the Fox FQ5032B series Table 4-5. External 32.768kHz Crystal 4.2.2. SAM B11 pin Function Shared functionality RTC_CLKP XIN32 - RTC_CLKN XOUT32 - Mechanical Buttons SAM B11 Xplained Pro contains two mechanical buttons. One button is the RESET button connected to the SAM B11 reset line and the other is a generic user configurable button. When a button is pressed it will drive the I/O line to GND. Note:  There is no pull-up resistor connected to the generic user button. Remember to enable the internal pull-up in the SAM B11 to use the button. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 15 Table 4-6. Mechanical Buttons 4.2.3. SAM B11 pin Silkscreen text Shared functionality RESET RESET - GPIO_23 SW0 EDBG GPIO LED There is one yellow LED available on the SAM B11 Xplained Pro board that can be turned on and off. The LED can be activated by driving the connected I/O line to GND. Table 4-7. LED Connection 4.2.4. SAM B11 pin Function Shared functionality GPIO_22 Yellow LED0 EDBG GPIO Debug I2C and UART Debug I2C and UART are used for debugging the BLE stack in the SAM B11 boards. Both these headers are not mounted on the production variant. Pinout for the Debug I2C: Table 4-8. Debug I2C Pinout Specification SAM B11 pin Function Shared functionality I2C SCL Clock line for I2C EXT3 GND Ground I2C SDA Data line for I2C EXT3 NC Pinout for Debug UART: Table 4-9. Debug UART Pinout Specification SAM B11 pin Function Shared functionality UART TXD UART TX pin EXT3 UART RXD UART RX pin EXT3 GND 4.2.5. Battery header The SAM B11 Xplained Pro has a BATTERY HEADER for connecting the battery for use with the SAM B11 module. The battery header has a VCC and GND pin and disconnects the LDO for the MCU. It is polarity protected. The batter power supply can be given to the device by placing a jumper over pin 1-2 on the 3-pin VBAT SELECT header. By default the jumper is placed over pin 2-3 to select the board power supply. This configuration is selected to avoid draining the battery and can be used during development. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 16 Table 4-10. VBAT SELECT Header 4.2.6. VBAT SELECT pin Function 1 Power from battery 2 VCC pin of SAM B11 board, powers both MCU and Extensions 3 Power from board supply Temperature Sensor The SAM B11 Xplained Pro has an on board temperature sensor AT30TSE758A, powered by the VCC_TARGET_P3V3 of the board. The temperature sensor is I²C controlled and is available on the address 0x48 (7bit MSB address) AT30TSE758A also has a serial EEPROM accessible through I²C 4.3. SAMB11 pin Function Shared functionality LP_GPIO_8 SDA (Data line) EXT1, EDBG I²C LP_GPIO_9 SCL (Clock line) EXT1, EDBG I²C LP_GPIO_5 ALERT EXT1 Embedded Debugger Implementation SAM B11 Xplained Pro contain an Embedded Debugger (EDBG) that can be used to program and debug the ATSAMB11G18A using Serial Wire Debug (SWD). The Embedded Debugger also include a Virtual Com port interface over UART, an Atmel Data Gateway Interface over SPI, and I2C and it includes four of the SAM B11 GPIOs. The kit also includes a XAM extension processor to the Embedded Debugger for on-board current measurement. Atmel Studio can be used as a front end for the Embedded Debugger. 4.3.1. Serial Wire Debug The Serial Wire Debug (SWD) use two pins to communicate with the target. For further information on how to use the programming and debugging capabilities of the EDBG, see Embedded Debugger on page 6. Table 4-11. SWD Connections 4.3.2. SAM B11 pin Function Shared functionality LP_GPIO_0 SWD clock Table 4-4 Cortex Debug Connector on page 15 LP_GPIO_1 SWD data Table 4-4 Cortex Debug Connector on page 15 Virtual COM Port The Embedded Debugger acts as a Virtual Com Port gateway by using one of the ATSAMB11G18A UARTs. For further information on how to use the Virtual COM port, see Embedded Debugger on page 6. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 17 Table 4-12. Virtual COM Port Connections 4.3.3. SAM B11 pin Function Shared functionality LP_GPIO_2 UART TXD(SAM B11 TX line) EXT1 LP_GPIO_3 UART RXD (SAM B11 RX line) EXT1 Atmel Data Gateway Interface The Embedded Debugger features an Atmel Data Gateway Interface (DGI) by using either a SPI or I²C. The DGI can be used to send a variety of data from the ATSAMB11G18A to the host PC. For further information on how to use the DGI interface, see Atmel Data Visualizer and the EDBG User Guide. Table 4-13. DGI Interface Connections When Using SPI SAM B11 pin Function Shared functionality LP_GPIO_7 GPIO/SPI SS (Slave select) ((SAM B11 is Master)) - LP_GPIO_13 SPI MISO (Master In, Slave Out) EXT1 LP_GPIO_11 SERCOM5 PAD[2] SPI MOSI (Master Out, Slave in) EXT1 LP_GPIO_10 SERCOM5 PAD[3] SPI SCK (Clock Out) EXT1 Table 4-14. DGI Interface Connections When Using I²C SAM B11 pin Function Shared functionality LP_GPIO_8 SDA (Data line) EXT1 LP_GPIO_9 SCL (Clock line) EXT1 Four GPIO lines are connected to the Embedded Debugger. The EDBG can monitor these lines and time stamp pin value changes. This makes it possible to accurately time stamp events in the SAM B11 application code. For further information on how to configure and use the GPIO monitoring features, see Atmel Data Visualizer and the EDBG User Guide. Table 4-15. GPIO Lines Connected to the EDBG 4.3.4. SAM B11 pin Function Shared functionality LP_GPIO_22 GPIO0 USER LED LP_GPIO_23 GPIO1 USER BUTTON LP_GPIO_18 GPIO2 EXT3 LP_GPIO_20 GPIO3 SAM B11 Xplained Pro XAM Configuration On the SAM B11 Xplained Pro the MCU and the MCU peripherals (e.g. extensions) are powered by its own regulator as show in the following figure. All other parts of the board, mainly embedded debugger and accompanying Xplained Pro Analog Module (XAM), are powered from a separate regulator. The current to the MCU and peripherals can be measured by connecting them to the XAM output through jumper settings. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 18 Figure 4-1. SAMB11 XAM Implementation Block Diagram On the SAM B11 Xplained Pro the XAM can be used in four configurations: 1. No current measurement or external MCU current measurement: The XAM is bypassed and thus the MCU and peripherals are supplied directly by the regulator. Set both jumpers in the "BYPASS" position. In this configuration it is also possible to connect external measurement tools on the Xplained Pro MCU power measurement header to measure MCU current directly instead of using the XAM. 2. MCU current measurement: The XAM measures only the MCU current while the peripherals are supplied directly by the regulator. For this configurations place the jumper for "I/O" (peripherals) into the "BYPASS" position and the for "MCU" into the "MEASURE" position. 3. Peripherals measurement: The XAM measures only the peripherals current while the MCU is directly supplied by the regulator. For this configuration place the jumper for "MCU" into the "BYPASS" position and the "I/O" jumper into the "MEASURE" position. 4. MCU and peripherals measurement: In this configuration both MCU and peripherals are measured by the XAM. Place both jumpers on "I/O" and "MCU" headers in the "MEASURE" position. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 19 5. Document Revision History Doc. rev. Date Comment 42664A 02/2016 Initial document release. Atmel SAM B11 Xplained Pro [USER GUIDE] Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 20 Atmel Corporation © 1600 Technology Drive, San Jose, CA 95110 USA T: (+1)(408) 441.0311 F: (+1)(408) 436.4200 | www.atmel.com 2016 Atmel Corporation. / Rev.: Atmel-42664A-ATSAMB11-Xplained-Pro_User Guide-02/2016 ® ® ® ® Atmel , Atmel logo and combinations thereof, Enabling Unlimited Possibilities , AVR , QTouch , and others are registered trademarks or trademarks of Atmel ® ® ® Corporation in U.S. and other countries. Windows is a registered trademark of Microsoft Corporation in U.S. and or other countries. ARM , ARM Connected logo and others are the registered trademarks or trademarks of ARM Ltd. Other terms and product names may be trademarks of others. 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