Hyeco Smart Tech ML601 Embedded Low Power Consumption Lora Module User Manual

: June 6, 2024
: Hyeco Smart Tech

Table of Contents

Introduction
- The ASR6601 is a LoRa soc chip.
- Main feature：
Basic parameters of the module
Hardware introduction
Parameter of function.
Regional division of FLASH
Usage of module
AT instruction
Restores the default serial port rate 38400 and no checked
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ML601
Embedded low power consumption LoRa module manual
0V1

Date	Author	Version	Note
June 21st ,2021	Yebing Wang	V0.1	First edition, modules’ definition of

Introduction

The ASR6601 is a LoRa soc chip.

The interior is implemented by core of Cortex M4 with the software core of Semtech’s LoRa transceiver SX1262. The module can achieve 868(for EU)/915Mhz frequency band communication. The module implements the LoRa device with CLASS A,B,C protocol, DTU and various private protocols. Class A, B,C protocol is nonstandard Lorawan protocol and is only suitable for our gateway. The MCU inside the module is powerful, with a 48Mhz master frequency and 16kbytes Sram,128k flash, making a big leap in performance from the previous ASR6505. In order to reduce the cost of hardware, the Open MCU scheme can be used directly inside by user without expand MCU.
The module’s maximum receiving sensitivity is up to – 140dBm, maximum transmit power up to 14dBm@868MHz(for EU) Band / 94dBuV/m@3m@915MHz Band.

Main feature：

Maximum reception sensitivity is up to -148dBbm
Maximum launch power is 14dBm@868MHz(for EU) Band / 94dBuV/m@3m@915MHz Band.
Maximum transmission speed: 62.5kbps
Minimum dormant current: 2uA
Maximum master frequency: 48Mhz
16kbytes Sram, 128k Flash

Basic parameters of the module

Classify	Parameter	Value
Wireless	Launch power

Hardware introduction

Outline of module

Notes for Hardware design:

Try to supply the module using separate power supplies with low noise LDO such as SGM2033.
The supply current of the module must be >120mA, not including the rest system current.

The definition of pin

Pin number	Name	Type	Description
I	GND	Power	System GND
2	GPI033	()	This 10 function is high output at module

wake up and 10 low during hibernation.
For 9V battery power supply cases. for low power consumption. Power is supplied by LIX) when the module is dormant and by DCDC when the module wakes up.
External LED. usually high. put low when lighting.
3| GPI037| 1| I. For the external MCU to wake up the LoRa module. (Usually high level. when the module needs to wake up. the MCU output I ms pulse (low level effective) to the module. All mode pull-down low levels above 2S recovery port rate default):
2. For the external MCU tells Lora is ready to receive AT instructions:
4| GPI032| 0| I. To wake up external MCU.
2. Use to tell the MCU. Lora module has been awakened to accept AT instructions: Lower wireless data. finish sanding. and hibernation
5| GPTIMO_CH I SP10_CS
GPI001| I0| PWM output
SPI chip selection 10
6| GPTIMO_CHO SP1O_CLK GP1000| I0| PWM output SPI clock
I0
7| GPTIMO_CH3 SPIO_RX GPI003| I0| PWM output SPI input
I0
8| BOOT GPTIMO_CH2 SPIO_TX GP1002| I0| Choose BOOT( internal pull-down). PWM output SP1 output I0
9| SWD GP1006| I0| Simulator debugging SWD t pull-up ) I0
10| SWC GP1007| 0| Simulator debugging SWC
( pull-down ) 10
---|---|---|---
II| VCC| 0| Power input 3.3V. Maximum peak
current150mA.
12| GND| Power| System GND
13| UAFtTO_RX GP1016| I0| Serial port 0 receive
10-download-print
14| UARTO_TX GP1017| I0| Serila port 0 send
10-download-print
15| 11CO_SCL GP1014| I0| IICO clk 10
16| 11CO_SDA GY1015| I0| IICO DATA 10
17| /RST| 0| System reset. low effectiveness
18| GP1009 GPTIMI CHI| 0| I0
PWM output
19| GP105
ADC2| I0/A| I0
ADC CH2
20| ADC3 GPI004| A/I0| ADC CH3 10
21| LPUART_RX GPI060| I0| Low Power UART RX 10-AT interactive
22| LPUART_TX GP1047| I0| Low Power UART TX 10
23| OPAO_INP GP1045| MO| Operational amplifier 0. positive enter point
I0
24| OPAO_INN GP1044| .A/I0| Operational amplifier 0. negative enter point
I0
25| OPAO_OUT GP1010| MO| Operational amplifier 0. output point 10
27| GND| Power| System GND
28| ANT| RF| Antenna wire
29| GND| Power| System grounding line

Hardware size

Electrical character

Parameter| Condition| Minimum| Normal| Maximum| Unit
---|---|---|---|---|---
Working voltage| | 3| 3.3| 3.6| V
Working current| Continuous
send| | 120| | mA
dormant current| RTC work| | 2| | uA

Reference design

Parameter of function.

Support wireless transmission
Changeable serial port rate and test bit
Support for transmission data encryption and decryption
Support for frequency and rate-setting
Support the selective preservation of setting parameters. The MCU control the module does not need to be saved, and it is used separately as a transmission module
Support the use of external MCU control modules and independent modules
The serial port rate, Lora rate, Lora frequency, and secret key within the same transmission combination need to be consistent, and the inconsistency will lead to anomalies
LED lamp (GPIO33) flash at 2S frequency
Pull GPIO32 down when sending data, sent and dormant
Export “AT + START\r\n”, until it receives this command Directive configuration and data transfer
The recovery default serial port rate is 38400, no verification function

Regional division of FLASH

Internal Flash has a total of 128kbytes, page in size of 4k.

Region	Range of region	Byte	Note

Usage of module

Module use can be controlled by an external MCU and as independent modules using two, with an arbitrary combination of port rate and rate, the packet length transmission supports a maximum of 1K (1023Byte) byte data.

External MCU control
The default GPIO32 of the power is high, the GPIO32 is pulled down during the data transmission process, and the GPIO32 is high, which can be determined here whether the broken module is dead, the timeout should be greater than 5.26S (sending 1 K bytes at SF9,2400 baud rate).
When the transmission data is greater than 1K, the 1K data is sent first to continue to send the remaining data when the GPIO32 is restored to high, so that the circular transmission is sent.

AT instruction

(Note: Sending the command needs to return the line and return the AT command to return the line)
7.1， Enter into AT instruction mode

Serial port	Format	Note
Send	+++	The start and end byte of a frame must be with an ending with three

consecutive ‘+’+”\r\n”, send a character ‘a’ between10ms to 1s
Send| a| The ‘a’ must end with the frame start byte + “\ r \ n” and if the +

‘character is not received in module 1S, the’ + + +’is issued as a data transmission
Return| AT+ENAT=OK| Enter into command mode

7.2, Set the serial port rate
Note: After this step, the serial port returns OK or ERR, MCU according to the previous port rate, and check bit to synchronously initialize the corresponding port rate and check bit after receiving the successful setup command.

Serial port	Format	Note
Send	AT+BAUD=9600,0	2400、4800、9600、14400、19200、38400(default)、7600、115200

optional
0-No check bit（default）
1-Check odd
2-Check even

Return

7.3, Set the Lora frequency interval

Serial port	Format	Note
Send	AT+FREQ=4400

| 470Mhz span：4300~5100
868Mhz(for EU) span：8600~9200
Default； 4400

Return

7.4， Set the Lora rate

Serial port	Format	Note
Send	AT+RATE=7	7(5470bps) /8(3125bps) /9(1760bps)optional

Default：7

Return

7.5, Set the working mode

Serial port	Format	Note
Send	AT+WORKMODE=1	After sending the data in dormant mode

Return

7.6, Set the Lora packet length

Serial port	Format	Note
Send	AT+LORALENTH=240	Set the Lora data per packet（32~240）

Return

7.7, Set up the key
Fixed 16 bytes and 16 decimal numbers (16 characters) with the encryption key to resolve the data correctly.Query is not supported.

Serial port	Format	Note
Send	AT+DATAKEY=Qqert,91234567890	Support for numbers, English, and English

characters. Default： All 0

Return

7.8, Save the parameters set above
Note: Perform this command to save the previously set AT instruction parameters.

Serial port	Format	Note
Send	AT+SAVE	Save the above set AT instruction parameters
Return	AT+SAVE=OK

7.9, clear the above set parameters- -the restart takes effect
Note: restore default except the above setting AT instruction parameters.

Serial port	Format	Note
Send	AT+RESTORE	Clear the above set AT instruction parameters

to restore the default values
Return| AT+RESTORE=OK|

7.10, Exit the AT instruction mode
Note: This step indicates that the setting is complete and the module receives the instruction into transmission mode. The setting was not complete midway, and the previous setting was also successful.

Serial port	Format	Note
Send	AT+EXAT	Exit the at instruction mode
Return	AT+EXAT=OK

Note: The parameters configured through the AT instruction will not be automatically saved, the configured parameters after power again will restore the default, which need to be saved through AT + SAVE.

Restores the default serial port rate 38400 and no checked

GPIO37 pin holding low level above 2S can restore the default serial port rate and return to AT + BAUD=38400,0 + return line.
Please take attention that changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
The module is limited to OEM installation ONLY The OEM integrator is responsible for ensuring that the end-user has no manual instruction to remove or install-module.
When the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains FCC ID: 2AZ6I- ML601” and the information should be also contained in the devices’ user manual.