Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.
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.. zephyr:board:: max32666evkit
Overview
********
The MAX32666EVKIT provides a platform for evaluating the capabilities of the MAX32665 and MAX32666
high-efficiency Arm® microcontrollers and audio DSP for wearable and hearable device applications.
The Zephyr port is running on the MAX32666 MCU.
Hardware
********
- MAX32666 MCU:
- High-Efficiency Microcontroller and Audio DSP for Wearable and Hearable Devices
- Arm Cortex-M4 with FPU Up to 96MHz
- Optional Second Arm Cortex-M4 with FPU Optimized for Data Processing
- Low-Power 7.3728MHz System Clock Option
- 1MB Flash, Organized into Dual Banks 2 x 512KB
- 560KB (448KB ECC) SRAM; 3 x 16KB Cache
- Optional Error Correction Code (ECC-SEC-DED)for Cache, SRAM, and Internal Flash
- Bluetooth 5 Low Energy Radio
- 1Mbps and 2Mbps Data Throughput
- Long Range (125kbps and 500kbps)
- Advertising Extension
- Rx Sensitivity: -95dbm; Tx Power Up to +4.5dbm
- On-Chip Matching with Single-Ended Antenna Port
- Power Management Maximizes Operating Time for Battery Applications
- Integrated SIMO SMPS for Coin-Cell Operation
- Dynamic Voltage Scaling Minimizes Active Core Power Consumption
- 27.3μA/MHz at 3.3V Executing from Cache
- Selectable SRAM Retention in Low Power Modes with RTC Enabled
- Multiple Peripherals for System Control
- Three QSPI Master/Slave with Three Chip Selects Each
- Three 4-Wire UARTs
- Three I2C Master/Slave
- Up to 50 GPIO
- QSPI (SPIXF) with Real-Time Flash Decryption
- QSPI (SPIXR) RAM Interface Provides SRAMExpansion
- 8-Input 10-Bit Delta-Sigma ADC 7.8ksps
- USB 2.0 HS Engine with Internal Transceiver
- PDM Interface Supports Two Digital Microphones
- I2S with TDM
- Six 32-Bit Timers
- Two High-Speed Timers
- 1-Wire Master
- Sixteen Pulse Trains (PWM)
- Secure Digital Interface Supports SD3.0/SDIO3.0/eMMC4.51
- Secure Valuable IP/Data with Hardware Security
- Trust Protection Unit (TPU) with MAA SupportsFast ECDSA and Modular Arithmetic
- AES128/192/256, DES, 3DES, Hardware Accelerator
- TRNG Seed Generator
- SHA-2 Accelerator•Secure Bootloader
- Benefits and Features of MAX32666EVKIT:
- Bluetooth SMA connector with a 2.4GHz Hinged Whip Antenna
- 1.28in 128 x 128 Monochrome TFT Display
- 64MB XIP Flash
- 1MB XIP RAM
- Stereo Audio Codec with Line-In and Line-Out 3.5mm Jacks
- Digital Audio Microphone
- USB 2.0 Micro B Interface
- USB 2.0 Micro B to Serial UARTs
- Micro SD Card Interface
- Select GPIOs Accessed Through a 0.1in Header
- Access to the 8 Analog Inputs Through a 0.1in Header
- Arm® or SWD JTAG 20-Pin Header
- 1-Wire RJ11 Port
- Can Be Solely Sourced by a Coin Cell Battery
- Board Power Provided by Either USB Port
- Individual Power Measurement on All IC Rails Through Jumpers
- On-Board 1.8V and 3.3V Regulators
- Two General-Purpose LEDs and Two General-Purpose Pushbutton Switches
Supported Features
==================
.. zephyr:board-supported-hw::
Connections and IOs
===================
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| Name | Name | Settings | Description |
+===========+===============+===============+==================================================================================================+
| JP1 | I2C0_SCL/SDA | | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects I2C0 SCL and SDA 1.5K pullups from VDDIOH. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects I2C0 SCL and SDA 1.5K pullups to VDDIOH. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP2 | I2C1_SCL/SDA | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects I2C1 SCL and SDA 1.5K pullups from VDDIOH. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects I2C1 SCL and SDA 1.5K pullups to VDDIOH. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP3 | I2C2_SCL/SDA | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects I2C2 SCL and SDA 1.5K pullups from VDDIOH. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects I2C2 SCL and SDA 1.5K pullups to VDDIOH. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP4 | P1_14 | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects LED D2 from P1_14. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects LED D2 to P1_14. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP5 | P1_15 | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects LED D3 from P1_15. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects LED D3 to P1_15. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP6 | VBUS | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | 2-1 | | | Connects VBUS to USB connector CN1 to supply board power. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | 2-3 | | | Connects VBUS to USB connector CN2 to supply board power. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP7 | N/A | N/A | N/A |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP8 | N/A | N/A | N/A |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP9 | +-----------+ | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | P0_20 | | | 2-1 | | | Connects the USB to serial UART to GPIO P0_20 (RX1). | |
| | +-----------+ | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | P0_28 | | | 2-3 | | | Connects the USB to serial UART to GPIO P0_28 (RX2). | |
| | +-----------+ | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP10 | +-----------+ | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | P0_21 | | | 2-1 | | | Connects the USB to serial UART to GPIO P0_21 (TX1). | |
| | +-----------+ | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | P0_29 | | | 2-3 | | | Connects the USB to serial UART to GPIO P0_29 (TX2). | |
| | +-----------+ | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP11 | +-----------+ | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | P0_22 | | | 2-1 | | | Connects the USB to serial UART to GPIO P0_22 (CTS1_N). | |
| | +-----------+ | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | P0_30 | | | 2-3 | | | Connects the USB to serial UART to GPIO P0_30 (CTS2_N). | |
| | +-----------+ | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP12 | +-----------+ | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | P0_23 | | | 2-1 | | | Connects the USB to serial UART to GPIO P0_23 (RTS1_N). | |
| | +-----------+ | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | P0_31 | | | 2-3 | | | Connects the USB to serial UART to GPIO P0_31 (RTS2_N). | |
| | +-----------+ | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP13 | VREGI | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | 2-1 | | | Connects VREGI to the coin cell battery. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | 2-3 | | | Connects VREGI to 3V3. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP14 | VDDIOH | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | 1-2 | | | Connects VDDIOH to VREGO_A | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | 3-4 | | | Connects VDDIOH to 1V8. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | 5-6 | | | Connects VDDIOH to 3V3. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP15 | VDDIOH | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects power from VDDIOH. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects power to VDDIOH. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP16 | VDDB | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects power from VDDB. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects power to VDDB. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP17 | VDDIO | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | 2-1 | | | Connects VDDIO to VREGO_A. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | 2-3 | | | Connects VDDIO to 1V8. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP18 | VDDIO | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects power from VDDIO. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects power to VDDIO. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP19 | VDDA | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects power from VDDA. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects power to VDDA. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP20 | VCORE_A | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects power from VCORE_A. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects power to VCORE_A. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP21 | VCORE_B | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects power from VCORE_B. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects power to VCORE_B. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP22 | VTXIN | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects power from VTXIN. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects power to VTXIN. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
| JP23 | VRXIN | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Open | | | Disconnects power from VRXIN. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | Close | | | Connects power to VRXIN. | |
| | | +-----------+ | +-------------------------------------------------------------------------------+ |
| | | | |
+-----------+---------------+---------------+--------------------------------------------------------------------------------------------------+
Programming and Debugging
*************************
.. zephyr:board-supported-runners::
Flashing
========
The MAX32666 MCU can be flashed by connecting an external debug probe to the
SWD port. SWD debug can be accessed through the Cortex 10-pin connector, J6.
Logic levels are fixed to VDDIOH (1.8V or 3.3V).
Once the debug probe is connected to your host computer, then you can simply run the
``west flash`` command to write a firmware image into flash. To perform a full erase,
pass the ``--erase`` option when executing ``west flash``.
.. note::
This board uses OpenOCD as the default debug interface. You can also use
a Segger J-Link with Segger's native tooling by overriding the runner,
appending ``--runner jlink`` to your ``west`` command(s). The J-Link should
be connected to the standard 20-pin connector (J7) or a Cortex® 10-pin connector (J6).
Debugging
=========
Please refer to the `Flashing`_ section and run the ``west debug`` command
instead of ``west flash``.
References
**********
- `MAX32666EVKIT web page`_
.. _MAX32666EVKIT web page:
https://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/MAX32666EVKIT.html