204 lines
6.7 KiB
ReStructuredText
204 lines
6.7 KiB
ReStructuredText
.. _max32655_fthr:
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MAX32655FTHR
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############
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Overview
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********
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The MAX32655FTHR is a rapid development platform to help engineers quickly implement
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ultra low-power wireless solutions using MAX32655 Arm© Cortex®-M4F and Bluetooth® 5.2 Low Energy (LE).
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The board also includes the MAX20303 PMIC for battery and power management.
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The form factor is a small 0.9in x 2.6in dual-row header footprint that is compatible
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with Adafruit Feather Wing peripheral expansion boards. The board includes a variety of peripherals,
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such as a digital microphone, lowpower stereo audio CODEC, 128MB QSPI Flash, micro SD card connector,
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RGB indicator LED, and pushbutton.
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The MAX32655FTHR provides a power-optimized flexible platform for quick proof-of-concepts and
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early software development to enhance time to market. Go to
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https://www.analog.com/MAX32655FTHR to get started developing with this board.
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The Zephyr port is running on the MAX32655 MCU.
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.. image:: img/max32655fthr_img1.jpg
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:align: center
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:alt: MAX32655FTHR Front
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.. image:: img/max32655fthr_img2.jpg
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:align: center
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:alt: MAX32655FTHR Front Modules
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.. image:: img/max32655fthr_img3.jpg
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:align: center
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:alt: MAX32655FTHR Back
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Hardware
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********
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- MAX32655 MCU:
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- Ultra-Low-Power Wireless Microcontroller
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- Internal 100MHz Oscillator
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- Flexible Low-Power Modes with 7.3728MHz System Clock Option
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- 512KB Flash and 128KB SRAM (Optional ECC on One 32KB SRAM Bank)
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- 16KB Instruction Cache
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- Bluetooth 5.2 LE Radio
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- Dedicated, Ultra-Low-Power, 32-Bit RISC-V Coprocessor to Offload Timing-Critical Bluetooth Processing
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- Fully Open-Source Bluetooth 5.2 Stack Available
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- Supports AoA, AoD, LE Audio, and Mesh
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- High-Throughput (2Mbps) Mode
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- Long-Range (125kbps and 500kbps) Modes
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- Rx Sensitivity: -97.5dBm; Tx Power: +4.5dBm
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- Single-Ended Antenna Connection (50Ω)
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- Power Management Maximizes Battery Life
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- 2.0V to 3.6V Supply Voltage Range
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- Integrated SIMO Power Regulator
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- Dynamic Voltage Scaling (DVS)
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- 23.8μA/MHz Active Current at 3.0V
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- 4.4μA at 3.0V Retention Current for 32KB
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- Selectable SRAM Retention + RTC in Low-Power Modes
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- Multiple Peripherals for System Control
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- Up to Two High-Speed SPI Master/Slave
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- Up to Three High-Speed I2C Master/Slave (3.4Mbps)
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- Up to Four UART, One I2S Master/Slave
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- Up to 8-Input, 10-Bit Sigma-Delta ADC 7.8ksps
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- Up to Four Micro-Power Comparators
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- Timers: Up to Two Four 32-Bit, Two LP, TwoWatchdog Timers
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- 1-Wire® Master
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- Up to Four Pulse Train (PWM) Engines
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- RTC with Wake-Up Timer
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- Up to 52 GPIOs
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- Security and Integrity
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- Available Secure Boot
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- TRNG Seed Generator
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- AES 128/192/256 Hardware Acceleration Engine
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- External devices connected to the MAX32655FTHR:
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- Audio Stereo Codec Interface
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- Digital Microphone
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- PMIC and Battery Charger
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- A 128Mb QSPI flash
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- Micro SDCard Interface
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- RGB LEDs
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- Push Buttons
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Supported Features
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==================
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Below are the interfaces supported by Zephyr on MAX32655FTHR.
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+-----------+------------+-------------------------------------+
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| Interface | Controller | Driver/Component |
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+===========+============+=====================================+
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| NVIC | on-chip | nested vector interrupt controller |
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+-----------+------------+-------------------------------------+
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| SYSTICK | on-chip | systick |
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+-----------+------------+-------------------------------------+
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| CLOCK | on-chip | clock and reset control |
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+-----------+------------+-------------------------------------+
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| GPIO | on-chip | gpio |
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+-----------+------------+-------------------------------------+
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| UART | on-chip | serial |
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+-----------+------------+-------------------------------------+
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| TRNG | on-chip | entropy |
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+-----------+------------+-------------------------------------+
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| I2C | on-chip | i2c |
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+-----------+------------+-------------------------------------+
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| DMA | on-chip | dma controller |
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+-----------+------------+-------------------------------------+
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| Watchdog | on-chip | watchdog |
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+-----------+------------+-------------------------------------+
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| SPI | on-chip | spi |
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+-----------+------------+-------------------------------------+
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Push Buttons
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************
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There are six pushbuttons on the MAX32655FTHR board
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SW1
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===
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PMIC Power Button, when the board is powered on state, pressing
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this button for 12 seconds performs a hard powerdown.
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When the board is in a powered-off state, pressing this button powers on the board.
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This button can also be read by MAX32655 firmware, PMIC_PFN2 signal connected to Port 0.13
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is a buffered input of the button status. When the button is pressed, this signal goes to a logic-low
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state.
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SW2
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===
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User-programmable function button connected to
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MAX32655 Port 0.2 through a debouncer IC.
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SW3
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===
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User-programmable function button connected to
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MAX32655 Port 0.3 through a debouncer IC.
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SW4
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===
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Wake-up button connected to MAX32655 Port 3.1.
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SW5
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===
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Resets the MAX32655 through RSTN input of the MAX32655.
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SW6
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===
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DAPLink adapter button. Keep this button
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pressed while applying power to the board to
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put the MAX32625 DAPLink adapter on board
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to MAINTENANCE mode for DAPLink firmware
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updates.
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LEDs
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****
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There are three RGB LEDs on the MAX32655FTHR board
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LED1 (D1)
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=========
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Connected to the MAX32655FTHR GPIO ports.
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This LED can be controlled by user firmware.
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Port 0.18: Red color
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Port 0.19: Green color
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Port 0.26: Blue color
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LED2 (D2)
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=========
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Connected to MAX20303 PMIC LEDx outputs.
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These LEDs can be controlled through I2C commands.
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They also can be configured as charge
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status indicators by issuing I2C commands.
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LED3 (D3)
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=========
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DAPLink adapter MAX32625 status LED.
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Controlled by the DAPLink adapter and cannot be
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used as a user LED.
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Programming and Debugging
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*************************
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Flashing
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========
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The MAX32625 microcontroller on the board is flashed with DAPLink firmware at the factory.
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It allows debugging and flashing the MAX32655 Arm Core over USB.
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Once the USB cable is connected to your host computer, then you can simply run the
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``west flash`` command to write a firmware image into flash.
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Debugging
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=========
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Please refer to the `Flashing`_ section and run the ``west debug`` command
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instead of ``west flash``.
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References
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**********
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- `MAX32655FTHR web page`_
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.. _MAX32655FTHR web page:
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https://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/max32655fthr.html
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