Wiki

The most recent version of this page is a draft.DiffThis version is outdated by a newer approved version.DiffThis version (21 Mar 2024 03:33) was approved by Joyce Velasco.The Previously approved version (18 Mar 2024 02:59) is available.Diff

This is an old revision of the document!


MAX32670-LR-ARDZ Long Range Wireless Radio Development Platform for Asset Management Applications

Overview

The MAX32670-LR-ARDZ base board features the MAX32670 high-reliability, ultralow power microcontroller based on Arm Cortex-M4 processor, and the LR1110 long range RF transceiver module. The integrated RF transceiver supports a frequency range from 800 MHz up to 960 MHz, making it suitable for high-performance flexible platforms that wirelessly transmit encrypted data at long-range; enabling a wide range of IoT applications using ADI sensing solutions.

This solution also utilizes Semtech’s Long Range Cloud™ Geolocation capabilities to significantly reduce power consumption by determining asset location in a cloud-based solver. Due to its low power consumption, this module is ideal for devices running on small-sized batteries The on-board MAX32670 Arm Cortex®-M4 32-bit microcontroller provides the platform with complete capability to run entire RF stacks and user applications.

Features

MCU
Arm Cortex-M4 Core with FPU up to 100 MHz
384 kB Flash Memory with Error Correction
160 kB SRAM (128 KB with ECC Enabled), optionally preserved in lowest power modes
Compatible RTC resolution for long range radio application for protocol timeout management
Security
Available Secure Boot
Support cryptographic algorithms, including AES-128/192/256
Power
Ultralow Power Real Time Clock with Integrated Power Switch
With 300 nA power consumption during sleep mode
Multi-Purpose Radio Front-End Targeting Geolocation Purposes
GNSS (GPS/BeiDou) low-power scanning
802.11b/g/n Wi-Fi ultralow power passive scanning
Long Range Radio
Support FSK, GFSK, MSK, GMSK, and Long Range FHSS modulations
Power Output: +15 dBm transmit peak power
Programmable bit rate up to 62.5 kbps and 300 kbps
Support sub-GHz ISM bands from 800 MHz to 960 MHz
High sensitivity: down to -148 dBm


Applications

  • Asset location
  • Asset recovery
  • Asset traceability
  • Inventory management
  • Asset loss and theft prevention


System Architecture




Hardware Design

In order to use this base board, all hardware settings such as the hardware peripheral connections, jumpers and UART switch configurations, power configurations, connectivity options, and the USB connectors and programming connections are provided in this page. Links to the schematics and the layout files are also available below.

Components and Connections

Peripheral Connectors


The following standard connectors are provided on the base board for customer to use with external add-on modules:

Connector Name Function
DC Power Connector Header Input range from +4 V to +6 V DC supply voltage
Battery Holder Battery holder for CR123A
Cortex SWD Header Used for flash programming and debug interface; also, provides a virtual serial port connection to MAX32670 microcontroller
PMOD_SPI 12-pin SPI PMOD connector
PMOD_I2C 8-pin I2C PMOD connector
ESP32 Connector ESP32 Devkit V1 connector
Arduino Connectors Arduino Uno Rev3 compatible connectors


MAX32670 MCU Pin Map


The pin map for the MAX32670 MCU is described in the table and its schematic diagram below.

Net Name Pin Name
UART
UART0A_RX_32670 20 P0.8 P0.8/UART0A_RX/I2S0_SDO/TMR0B_I
UART0A_TX_32670 21 P0.9 P0.9/UART0A_TX/I2S0_WS/TMR0B_O
UART0A_CTS_32670 22 P0.10 P0.10/UART0A_CTS/I2S0_SCK/TMR1B_I/DIV_CLK_OUTB
UART0A_RTS_32670 23 P0.11 P0.11/UART0A_RTS/I2S0_SDI/TMR1B_O
UART1A_RX_32670 17 P0.28 P0.28/UART1A_RX/TMR2D_I
UART1A_TX_32670 18 P0.29 P0.29/UART1A_TX/TMR2D_O
UART1A_CTS_32670 19 P0.30 P0.30/UART1A_CTS/TMR3D_I
SPI
SPI0_MISO_32670 6 P0.2 P0.2/SPI0_MISO/UART1B_RX/TMR1A_I
SPI0_MOSI_32670 7 P0.3 P0.3/SPI0_MOSI/UART1B_TX/TMR1A_O
SPI0_SCK_32670 8 P0.4 P0.4/SPI0_SCK/UART1B_CTS/TMR2A_I
SPI0_SS0_32670 9 P0.5 P0.5/SPI0_SS0/UART1B_RTS/TMR2A_O/DIV_CLK_OUTA
SPI1_MISO_32670 26 P0.14 P0.14/SPI1_MISO/UART2B_RX/TMR3B_I
SPI1_MOSI_32670 27 P0.15 P0.15/SPI1_MOSI/UART2B_TX/TMR3B_O
SPI1_SCK_32670 28 P0.16 P0.16/SPI1_SCK/UART2B_CTS/TMR0C_I
SPI1_SS0_32670 29 P0.17 P0.17/SPI1_SS0/UART2B_RTS/TMR0C_O
I2C
I2C0_SCL_32670 10 P0.6 P0.6/I2C0_SCL/LPTMR0_I/TMR3A_I
I2C0_SDA_32670 11 P0.7 P0.7/I2C0_SDA/LPTMR0_O/TMR3A_O
I2C1_SCL_32670 24 P0.12 P0.12/I2C1_SCL/EXT_CLK2/TMR2B_I/EXT_CLK1
I2C1_SDA_32670 25 P0.13 P0.13/I2C1_SDA/32KCAL/TMR2B_O/SPI1_SS0
I2C2_SCL_32670 30 P0.18 P0.18/I2C2_SCL/TMR1C_I
I2C2_SDA_32670 31 P0.19 P0.19/I2C2_SDA/TMR1C_O
JTAG
SWDIO_32670 4 P0.0 P0.0/SWDIO/TMR0A_I
SWDCLK_32670 5 P0.1 P0.1/SWDCLK/TMR0A_O
SWDCLKB_32670 1 P0.20 P0.20/CM4_RX/TMR2C_I/SWDCLKB
SWDIOB_32670 3 P0.22 P0.22/LPTMR1_I/TMR3C_I/SWDIOB
GPIO
P0_21_32670 2 P0.21 P0.21/CM4_TX/TMR2C_O
P0_23_32670 12 P0.23 P0.23/LPTMR1_O/TMR3C_O
P0_24_32670 13 P0.24 P0.24/LPUART0_CTS/UART0B_RX/TMR0D_I
P0_25_32670 14 P0.25 P0.25/LPUART0_RTS/UART0B_TX/TMR0D_O
P0_26_32670 15 P0.26 P0.26/LPUART0_RX/UART0B_CTS/TMR1D_I
P0_27_32670 16 P0.27 P0.27/LPUART0_TX/UART0B_RTS/TMR1D_O
RSTN_32670 35 RSTN RSTN


ESP32 Connector Pin Map


All connector pinouts for the ESP32 Development Board are described in the table and its schematic diagram below.

Pin Name Pin Number Pin Description
EN 1 P0_27_32670
GPIO 2 P0_21_32670
GPIO 3 P0_23_32670
GPIO 4 P0_24_32670
GPIO 5 P0_25_32670
GPIO 6 P0_26_32670
GPIO 7 I2C2_SDA_32670
GPIO 8 I2C1_SCL_32670
GPIO 9 I2C1_SDA_32670
GPIO 10 I2C2_SCL_32670
HSPI CLK 11 SPI0_SCK_32670
HSPI MISO 12 SPI0_MISO_32670
HSPI MOSI 13 SPI0_MOSI_32670
GPIO 14
GPIO 15
GPIO 16
GND 17 GND
VIN 18 VOUT_3130(def)/VCC_31334
VSPI MOSI 1 SPI1_MOSI_32670
I2C SCL 2 I2C0_SCL_32670
UART 0 TX 3 UART0A_TX_32670
UART 0 RX 4 UART0A_RX_32670
I2C SDA 5 I2C0_SDA_32670
VSPI MISO 6 SPI1_MISO_32670
VSPI CLK 7 SPI1_SCK_32670
VSPI CS0 8 SPI1_SS0_32670
UART 2 TX 9 UART1A_TX_32670
UART 2 RX 10 UART1A_RX_32670
RTC 11 UART0A_CTS_32670
RTC 12 UART0A_RTS_32670
RTC 13 SPI0_SS0_32670
RTC 14 UART1A_CTS_32670
SDI 15
SDO 16
SCK 17
3V3 18 VOUT_3130


Arduino Connector Pin Map


Net Name Pin Number Pin Name Description
P4
-- 1 NC
1V8_SSB0/3V3_SSB3(def) 2 IOREF POW
RSTN_32670 3 RESET AVR/POW
VOUT_3130 4 3.3V POW
-- 5 5V POW
-- 6 GND POW
-- 7 GND POW
1V8_SSB0/0V7_SSB2/3V3_SSB3(def)/VCC_31334 8 VIN POW
P3
P0_21_32670 1 A0/PC0 AVR/DIG/ANA
P0_23_32670 2 A1/PC1 AVR/DIG/ANA
P0_24_32670 3 A2/PC2 AVR/DIG/ANA
P0_25_32670 4 A3/PC3 AVR/DIG/ANA
I2C1_SDA_32670(def)/I2C2_SDA_32670 5 A4/PC4/SDA AVR/DIG/ANA/I2C
I2C1_SCL_32670(def)/I2C2_SCL_32670 6 A5/PC5/SCL AVR/DIG/ANA/I2C
P6
I2C0_SCL_32670 1 PC5/SCL AVR/DIG/ANA/I2C
I2C0_SDA_32670 2 PC4/SDA AVR/DIG/ANA/I2C
-- 3 AREF POW
-- 4 GND POW
SPI0_SCK_32670 5 PB5/SCK AVR/DIG/SPI
SPI0_MISO_32670 6 PB4/MISO AVR/DIG/SPI
SPI0_MOSI_32670 7 PB3/MOSI AVR/DIG/SPI/PWM
SPI0_SS0_32670 8 PB2/SS AVR/DIG/SPI/PWM
SWDCLKB_32670 9 PB1 AVR/DIG/PWM
SWDIOB_32670 10 PB0 AVR/DIG
P7
SPI1_SS0_32670 1 PD7 AVR/DIG
UART0A_CTS_32670 2 PD6 AVR/DIG/PWM
UART1A_CTS_32670 3 PD5 AVR/DIG/PWM
UART0A_RTS_32670 4 PD4 AVR/DIG
UART1A_TX_32670 5 PD3 AVR/DIG/PWM/INT
UART1A_RX_32670 6 PD2 AVR/DIG/INT
UART0A_TX_32670(def)/P0_27_32670 7 PD1 AVR/DIG/SER
UART0A_RX_32670(def)/P0_26_32670 8 PD0 AVR/DIG/SER
P5
SPI1_MISO_32670 1 MISO
3V3_SSB3(def)/VCC_31334 2 VCC
SPI1_SCK_32670 3 SCK
SPI1_MOSI_32670 4 MOSI
RSTN_32670 5 RESET
-- 6 GND


PMOD Connector Pin Map


SPI PMOD
Net Name Pin Number Pin Name
SPI0_SS0_32670(def)/SPI1_SS0_32670 1 SS
SPI0_MOSI_32670 2 MOSI
SPI0_MISO_32670 3 MISO
SPI0_SCK_32670 4 SCK
GND 5 GND
1V8_SSB3/3V3_SSB3(def)/VOUT_3130 6 VCC
P0_21_32670 7 INT
P0_26_32670 8 RST
SWDIOB_32670 9 IO7
P0_23_32670 10 IO8
GND 11 GND
1V8_SSB3/3V3_SSB3(def)/VOUT_3130 12 VCC
I2C PMOD
I2C1_SCL_32670/I2C2_SCL_32670 1 SCL
I2C1_SCL_32670/I2C2_SCL_32670 2 SCL
I2C1_SDA_32670/I2C2_SDA_32670 3 SDA
I2C1_SDA_32670/I2C2_SDA_32670 4 SDA
GND 5 GND
GND 6 GND
1V8_SSB3/3V3_SSB3(def)/VOUT_3130 7 VCC
1V8_SSB3/3V3_SSB3(def)/VOUT_3130 8 VCC


Wireless Connectivity Options


These are the wireless connectivity options available to use for Internet of Things (IoT) applications:

  1. On-board Chip Antenna (FL1)
  2. External Antenna connected through SMA connector (J3)
  3. GNSS Antenna SMA connector (J2)
  4. Wi-Fi Antenna SMA connector (J1)

These options can be configured by populating C67 with 39 pF for the external antenna or R159 with 0 Ω for on-board RF chip antenna with the center frequency tuned at 915 MHz.


Long Range Radio Connectivity Chipset


The MAX32670-LR-ARDZ utilizes the LR1110 long range radio connectivity chipset from Semtech. This chipset comes complete with the full low-power, wide area networking protocol built on top of the LoRa radio modulation technique.

The MAX32670 communicates to the LR1110 using the SPI bus, so the users will need to send LoRa commands and data over SPI bus. Library functions calls have been specifically designed to be used with the MAX32670 and LR1110 using SPI bus.

The pins that connect the MAX32670 and the LR1110 are as follows:

Connected to Net Name Pin I/O Name Function
P0_21_32670 - - 6 NRESET NRESET
P0_27_32670 - - 9 DIO9 IRQ
SPI1_SS0_32670 - - 10 DIO8 RFSW3
P0_23_32670 DIO7_1110 11 DIO7 RFSW2
P0_26_32670 DIO6_1110 19 DIO6 RFSW1
P0_25_32670 DIO5_1110 20 DIO5 RFSW0
SPI0_MISO_32670 - - 21 DIO4 SPI MISO
SPI0_MOSI_32670 - - 22 DIO3 SPI MOSI
SPI0_SCK_32670 - - 23 DIO2 SPI SCK
SPI0_SS0_32670 - - 24 DIO1 SPI NSS
P0_24_32670 - - 25 DIO0/ BUSY BUSY


Input Power Source Options


There are two (2) ways of powering the eval board, and a user may use any combination of power sources.

  1. Terminal Block - when an external supply is connected to the Terminal block connector P11.
  2. Battery Powered - when batteries are connected to BT1 connector on the back of the board.

Each of the different power modes, provides a different level of control and flexibility. You can find a matrix table of the different power modes and their general function here:

Power Source Voltage Rails Provided Peripherals Powered Function
Terminal Block (P11) 3 V to 6 V - MAX32670
- SPI and I2C PMODs
- ESP32 connectors
- Arduino connectors
- LR1110 chip
able to supply ALL voltages any peripheral might need
Battery Power (BT1) 3 V and 6 V - MAX32670
- SPI and I2C PMODs
- ESP32 connectors
- Arduino connectors
- LR1110 chip
able to supply ALL voltages any peripheral might need


Reset Button

Button Function
S1 provides a hardware RESET to MAX32670 microcontroller.


LED Indicators


The base board has five LEDs: DS1, DS2, DS3, DS4, and DS5.

Button Function
DS1 used as a LED indicator to one of the GPIOs of the MAX32670, P0.28.
DS2 used as a LED indicator to one of the GPIOs of the MAX32670, P0.29.
DS3 used as a LED indicator for the voltage output from the power supply.
DS4 used as a LED indicator for the voltage output from the MAX31334.
DS5 used as a LED indicator for the 3.3 V voltage output from the MAX3130.


Programming Connectors


This board uses an SWD interface and the MAX32625PICO board for programming the on-board MCUs. See the MAX32625PICO page for more details.

  • P1 - SWD interface used to program the MAX32670

Connected to Pin Number
1V8_SSB0/3V3_SSB3(def) 1
SWDIO_32670 2
GND 3
SWDCLK_32670 4
GND 5
UART0A_TX_32670 6
- 7
UART0A_RX_32670 8
- 9
RSTN_32670 10

The connector used are based off the 10-pin Arm Cortex standard pinout (0.05“ pin spacing). That pinout is common to both JTAG and SWD debug modes and is depicted in the following image.

The debugger board will need to be plugged in via the USB port in order to program any board.

In order to program the MAX32670 node board, the board must be powered by (1) CR123A battery or by an external power supply through P11. Otherwise, there will be no connection between the two boards.



System Setup

PHASE 1: Hardware Setup

Note that this setup only applies for MAX32670-LR-ARDZ Base Board. Users may use a different base board or microcontroller, however the firmware built for this demo application cannot be used as this is specifically designed for the MAX32670-LR-ARDZ.


Equipment Needed

  • One (1) MAX32670-LR-ARDZ Base Board
  • One (1) EV-CATTLETAG-ARDZ Sensor Node
  • One (1) MAX32625PICO Rapid Development Platform with 10-pin ribbon cable
  • One (1) CR123A Battery or any equivalent external DC power supply (+3 V to +4.7 V)
    • Note that this is not included in the kit
  • One (1) Micro USB to USB cable
  • Host PC (Windows 10 or later)





  1. Insert one CR123A battery (3 V to 4.7 V) into the battery holder (BT1 connector) of the MAX32670-LR-ARDZ Base Board.

    Make sure to check for the battery polarity in the BT1 connector, refer to the figure below. The DS3 LED will light up indicating that you have inserted the battery correctly and that power is provided in the base board.

  2. Connect the EV-CATTLETAG-ARDZ to the MAX32670-LR-ARDZ Base Board by aligning the corresponding Arduino headers on each board.
  3. Connect the MAX32625PICO programming adapter to the MAX32670-LR-ARDZ Base Board through the 10-pin ribbon cable.

    Make sure that the MAX32625PICO programming adapter has been flashed with the correct image before connecting it to the MAX32670-LR-ARDZ Base Board. If you do not know how to load the image, click on the instructions below:

    How to flash the firmware image in the MAX32625PICO

    How to flash the firmware image in the MAX32625PICO

    1. Download the firmware image: MAX32625PICO Firmware
    2. Do not connect the MAX32625PICO to the MAX32670-LR-ARDZ Base Board yet.
    3. Connect the MAX32625PICO to the Host PC using the micro USB to USB cable.
    4. Press the button on the MAX32625PICO. (Do not release the button until the MAINTENANCE drive is mounted).
    5. Release the button once the MAINTENANCE drive is mounted.
    6. Drag and drop (to the MAINTENANCE drive) the firmware image.
    7. After a few seconds, the MAINTENANCE drive will disappear and be replaced by a drive named DAPLINK. This indicates that the process is complete, and the MAX32625PICO can now be used to flash the firmware of the MAX32670-LR-ARDZ Base Board.
  4. Connect the MAX32625PICO programming adapter to the Host PC using the micro USB to USB cable.


Once you have completed this setup, proceed to PHASE 2 found in ADI Long Range Wireless Radio Software User Guide.



Resources

Design and Integration Files

MAX32670-LR Design Support Package

REV C

  • Schematic
  • Bill of Materials
  • Layout
  • Allegro Project

Help and Support

For questions and more information, please visit the Analog Devices Engineer Zone.



End of Document

resources/eval/user-guides/max32670-lr-ardz.1710988386.txt.gz · Last modified: 21 Mar 2024 03:33 by Joyce Velasco