Atmel EDBG User Manual Download Page 8

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4.3.1.2.  Kit Data

Token: 

0xD2

The EDBG has 256 bytes for storing kit-specific data such as MAC address, calibration values, etc. See
the kit documentation for details on how the data is organized. The information can be retrieved by using
the 

Kit Data

 token. Note that not all kits have kit-specific data, and the entire section will read as 0.

After sending the token, the stored kit-specific data will be sent byte-by-byte, starting with location 0, until
a stop condition is detected.

4.4. 

GPIO Interface

Up to four General Purpose Input/Output (GPIO) signals are connected to DGI. In input mode, they can
be used as a status indication from the target device. In output mode, they can be used as virtual control
signals to simulate buttons.

The GPIO interface is always timestamped. It is only useful for signals with a relatively slow toggle rate
(<250kHz).

4.5. 

Timestamp Module

Data received on DGI Interfaces can be routed through the timestamp module to embed timing
references into the data stream. The timestamp is implemented as a counter, which increments in steps
of (32/60) µs, giving a timestamp accuracy of about half a microsecond.

The timestamp module does not use DMA since it requires CPU intervention on each data unit received.
This implies a lower maximum data throughput and demands a larger delay between each data unit.

Atmel EDBG [USER GUIDE]

Atmel-42096C-EDBG_User Guide-10/2016

8

Summary of Contents for EDBG

Page 1: ...r EDBG is an onboard debugger for integration into development kits with Atmel MCUs In addition to programming and debugging support through Atmel Studio the EDBG offers data streaming capabilities be...

Page 2: ...4 1 SPI Interface 6 4 2 USART Interface 6 4 3 I2C Interface 6 4 3 1 Information Interface 7 4 4 GPIO Interface 8 4 5 Timestamp Module 8 5 Technical Overview 9 5 1 Pin Usage 9 5 2 Power Consumption 9 5...

Page 3: ...is factory configured depending on the specific kit capabilities The configuration is read by Atmel Studio to present the correct capabilities and simplify the user interface Supported extension boar...

Page 4: ...es are supported Atmel ARM Cortex M programming and debug interfaces Serial Wire Debug SWD Atmel megaAVR programming and debug interfaces JTAG Atmel AVR XMEGA programming and debug interfaces Program...

Page 5: ...n options must be specified in the terminal application which will propagate the configuration to the EDBG Virtual COM Port on connection The target MCU UART must be configured to match the Virtual CO...

Page 6: ...ed For sending data to the target device DMA is always used 4 2 USART Interface The Universal Synchronous Asynchronous Receiver Transmitter USART interface is connected through three digital signals R...

Page 7: ...AKed 4 3 1 1 Extension Boards Token 0xE1 The EDBG has 10 pins designated for extension board identification These pins are sampled on power up and the extension board identification information is sto...

Page 8: ...ed to DGI In input mode they can be used as a status indication from the target device In output mode they can be used as virtual control signals to simulate buttons The GPIO interface is always times...

Page 9: ...the design but should be well below 1mA 5 3 LED Control The EDBG controls two LEDs the power LED and the status LED The power LED is on by default when the kit is powered but can be disabled by the ED...

Page 10: ...Doc Rev Date Comments 42096C 10 2016 Updated Firmware Release History 42096B 02 2014 Added details about TWI info interface 42096A 02 2013 Initial document release Atmel EDBG USER GUIDE Atmel 42096C...

Page 11: ...ed kits 2 17 11 11 2015 CDC buffer fix 2 16 22 09 2015 Data polling improvements SWD speed improvement 2 09 11 05 2015 Improved power measurement Improved unlocking of SAM devices 2 01 27 01 2015 Impr...

Page 12: ...TION ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES Atmel makes no representations or warranties with respect to the accurac...

Page 13: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Microchip ATSAM4L8 XSTK...

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