Microchip Technology Power Debugger Bedienungsanleitung

Power Debugger

Preface

The Microchip Power Debugger is a powerful development tool for debugging and programming ARM® Cortex®-M

based Microchip SAM and Microchip AVR® microcontrollers using JTAG, SWD, PDI, UPDI, debugWIRE, aWire, TPI,

or SPI target interfaces.

In addition, the Microchip Power Debugger has two independent current sensing channels for measuring and

optimizing the power consumption of a design.

Microchip Power Debugger also includes a CDC virtual COM port interface as well as Microchip Data Gateway

Interface channels for streaming application data to the host computer from a SPI, USART, TWI, or GPIO source.

The Power Debugger is a CMSIS-DAP compatible debugger which works with MPLAB® X IDE, Atmel Studio 7.0, or

other front-end software capable of connecting to a generic CMSIS-DAP unit. The Power Debugger streams power

measurements and application debug data to Data Visualizer for real-time analysis.

A quick-start guide is included in the Power Debugger kit for convenience.

Info: Frequent updates of the Power Debugger firmware are provided in order to improve its features,

and to provide support for new MCUs. If required, refer to Appendix A to upgrade the Power Debugger

firmware.

Kit Contents

The Power Debugger kit contains:

• One Power Debugger unit with plastic back-plate

• Two USB cables (1.5m, high-speed, Micro-B)

• One adapter board containing 50-mil AVR, 100-mil AVR/SAM, and 100-mil 20-pin SAM adapters

• One IDC flat cable with 10-pin 50-mil connector and 6-pin 100-mil connector

• One 50-mil 10-pin mini squid cable with 10 x 100-mil sockets

• 20 x 100-mil separable strap cables

Figure 1. Power Debugger Kit Contents

Power Debugger

Table of Contents

Preface........................................................................................................................................................... 1

1. Kit Contents..................................................................................................................................2

1. Getting Started with the Power Debugger...............................................................................................5

2. Connecting the Power Debugger............................................................................................................ 7

2.1. Connecting to AVR® and SAM Target Devices.............................................................................7

3. Detailed Use Cases................................................................................................................................ 9

3.1. Low-Power Application.................................................................................................................9

3.2. USB-Powered Application.......................................................................................................... 29

4. On-chip Debugging............................................................................................................................... 53

4.1. Introduction.................................................................................................................................53

4.2. SAM Devices with JTAG/SWD................................................................................................... 53

4.3. AVR UC3 Devices with JTAG/aWire...........................................................................................58

4.4. tinyAVR®, megaAVR®, and XMEGA® Devices............................................................................64

5. Hardware Description............................................................................................................................77

5.1. Overview.................................................................................................................................... 77

5.2. Programming and Debugging.................................................................................................... 78

5.3. Analog Hardware........................................................................................................................78

5.4. Target Voltage Supply (VOUT)................................................................................................... 79

5.5. Data Gateway Interface..............................................................................................................79

5.6. CDC Interface.............................................................................................................................80

5.7. USB Connectors.........................................................................................................................80

5.8. LEDs...........................................................................................................................................83

6. Product Compliance..............................................................................................................................84

6.1. RoHS and WEEE....................................................................................................................... 84

6.2. CE and FCC...............................................................................................................................84

7. Firmware Release History and Known Issues...................................................................................... 85

7.1. Firmware Release History.......................................................................................................... 85

7.2. Known Issues.............................................................................................................................85

8. Revision History.................................................................................................................................... 86

The Microchip Website.................................................................................................................................87

Product Change Notification Service............................................................................................................87

Customer Support........................................................................................................................................ 87

Microchip Devices Code Protection Feature................................................................................................ 87

Legal Notice................................................................................................................................................. 87

Trademarks.................................................................................................................................................. 88

Power Debugger

Quality Management System....................................................................................................................... 88

Worldwide Sales and Service.......................................................................................................................89

Power Debugger

1. Getting Started with the Power Debugger

Getting started with the Power Debugger is simple, especially if one is familiar with the Atmel-ICE programmer and

debugger or any of the Microchip Xplained Pro kits.

Power Debugger

Getting Started with the Power Debugger

Tip: The Quick Start Guide shown here is included with the kit for convenience.

The use case section contains descriptions of how the Power Debugger can be put to use analyzing power

consumption in a number of scenarios. For a quick and easy introduction to Power Debugging, select the use case

which closest matches your current project or available boards.

The Hardware Description section provides technical details of the capabilities of the Power Debugger for users who

prefer to get started with custom boards.

Related Links

5. Hardware Description

Power Debugger

Getting Started with the Power Debugger

2. Connecting the Power Debugger

The many connection possibilities of the Power Debugger are laid out in a logical manner with the silkscreen serving

as a functional reference for most connectors. A connection overview is given here:

USB ‘DEBUG’ Connector: Must be connected to the host computer for debugger power supply and all data transfer.

USB ‘TARGET’ Connectors: Can be optionally used to supply USB power to the target. Data lines are passed

through to the corresponding ‘TARGET’ type A jack. For convenience when debugging USB powered applications,

the output to the target USB connector can be easily connected to either ‘A’ or ‘B’ channels using a jumper, as

indicated by the silkscreen drawing.

DGI 20-Pin Header Rows: Can be optionally connected to target data sources for data streaming to the computer.

AVR and SAM Debug Headers: To connect to the target device using either AVR 10-pin pinout (or via relevant

adapter) or the 10-pin ARM Cortex debug pinout.

VOUT: Optionally provide power from the Power Debugger to the target in the range 1.6V to 5.5V. Up to 100 mA can

be sourced. Voltage output is configured using the software front-end, and current is sourced from the DEBUG USB

connector.

GND: To ensure safe and accurate operation of the Power Debugger, a shared ground is essential.

‘A’ and ‘B’ Channel Current Measurement Ports: Depicted with ammeter symbols on the silkscreen, these two

measurement channels are to be connected in a high-side configuration. This means that the voltage supply is

connected to the input of the ammeter, and the load (target) is connected to the output.

Info: The grouping of the ‘A’ and ‘B’ channel input and output signals with respect to their neighboring

pins is purely for convenience. To route the configurable VOUT voltage source into channel ‘A’, a jumper

can be used. This voltage can be routed to channel ‘B’ using a wire-strap. The same applies to the voltage

provided by the TARGET USB connector.

Tip: For common power routing configurations, refer to the printed quick-start guide included in the kit

and in the Getting Started section.

2.1 Connecting to AVR® and SAM Target Devices

The Power Debugger is equipped with two 50-mil 10-pin JTAG connectors. Both connectors are directly electrically

connected, but conform to two different pinouts; the AVR JTAG header and the ARM Cortex Debug header. The

connector should be selected based on the pinout of the target board, and not the target MCU type - for example, a

SAM device mounted in an AVR STK600 stack should use the AVR header.

The Power Debugger kit contains all necessary cabling and adapters. An overview of connection options is shown.

Power Debugger

Connecting the Power Debugger

Figure 2-1. Power Debugger Connection Options

10-pin 50-mil JTAG/SWD

(Cortex debug header) 20-pin 100-mil SAM

header (for EVKs etc)

10-pin 100-mil JTAG/SWD header 10-pin 100-mil AVR JTAG header

6-pin 100-mil AVR ISP/PDI/

debugWIRE/aWire/TPI header

6-pin 50-mil AVR ISP/PDI/

debugWIRE/aWire/TPI header

10-pin 50-mil AVR JTAG header

The red wire marks pin 1 of the 10-pin 50-mil connector. Pin 1 of the 6-pin 100-mil connector is placed to the right of

the keying when the connector is seen from the cable. Pin 1 of each connector on the adapter is marked with a white

dot. The figure below shows the pinout of the debug cable. The connector marked A plugs into the debugger while

the B side plugs into the target board.

Figure 2-2. Debug Cable Pinout

A B

1 2

9 1 2

9 10

Power Debugger

Connecting the Power Debugger

3. Detailed Use Cases

A collection of use cases for the Power Debugger are outlined here. Each use case sets out to solve a given problem

in a certain scenario, and then provides a detailed account of how this can be achieved using the Power Debugger.

Low-Power (battery) Application

Different sleep modes of a basic low-power application are analyzed.

USB Application

Using the pass-through USB connection, the overall current consumption of a USB powered board is measured and

analyzed.

3.1 Low-Power Application

This use case uses a megaAVR® device to introduce you to the Power Debugger. Using the tool with Atmel Studio

and Data Visualizer, we learn how it can be used to measure, analyze, understand, and optimize the power

consumption of a typical low-power application. We also look at an example of code instrumentation using the Data

Gateway Interface.

Important: The Data Visualizer used in this use case should not be confused with the MPLAB Data

Visualizer. These two applications have a similar feature set and the Power Debugger also works with the

MPLAB Data Visualizer, but the user interface is totally different. The Data Visualizer referred to in this use

case was originally named Atmel Data Visualizer.

The example makes use of the ATmega328PB Xplained Mini Board, but could very easily be adapted to suit any

simple custom board.

3.1.1 Requirements

To be able to work through this example, the following is required:

• Host computer with Atmel Studio 7 (or later) installed (Data Visualizer is included)

• Microchip Power Debugger Kit (cabling included)

• Microchip ATmega328PB Xplained Mini Kit, or similar target board

• Pin headers: one 2x3 100-mil ISP header; two 1x8 100-mil headers

• Access to basic soldering equipment

3.1.2 Initial Hardware Setup

A block diagram of the initial setup is shown here.

Power Debugger

Detailed Use Cases

GND

Vcc

USB

AVR

ISP

DGI

CLK

PD1

PD4

host

POWER DEBUGGER

APWR_EN

USART/SPI

To get started a few modifications need to be made to the hardware.

In order to measure the current consumed by the target MCU you will need to intercept its power supply and feed it

through the measurement circuitry of the Power Debugger. This requires that a power rail header is mounted to the

Xplained Mini board.

To do: Mount power rail header on the Xplained Mini board.

We will make use of code instrumentation to send data from the Xplained Mini board to the Power Debugger DGI. To

do this we need access to PORTD features on the target MCU.

To do: Mount PORTD 0..7 header on the Xplained Mini board.

Although the ATmega328PB Xplained Mini board already contains a debugger (mEDBG), it is not going to be used in

this example. Instead we would rather make use of the Power Debugger for programming purposes.

To do: Mount the 6-pin 100-mil ISP programming header on the Xplained Mini board.

The headers to be mounted are shown here.

Power Debugger

Detailed Use Cases

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