Maximum number of SysRAM read/write - sleep mode

Mon, 2020-10-19 14:07 -- posciamelo

As far as I understood, in deep sleep mode it is possible to also power off the SysRAM to save more power and then program the SoC so that the OTP (One-Time Programmable) is instructed to automatically get mirrored into RAM upon every wake up.

Although more power efficient especially for long advertising intervals, I was wondering what would be the effect in the long run of having the application being mirrored again and again into RAM at every wakeup.

Is there a guaranteed number of read/write operations for the SysRAM?


Can't control DA14531 from PC terminal

Mon, 2020-10-19 11:45 -- filipesousa

Hello Dialog,

I'm using a DA14531-00FXDEVKT-1 to connect the PC terminal to SmartConsole Android App. Firmware on the dev board is Codeless Standalone Set-One.

I can send a string from the PC terminal to SmartConsole using pipe char. But can't send AT commands to control the module.

From the SmartConsole, using "AT+PRINT=sometext" I get response "OK" but nothing reaches the PC terminal.


Best regards


Can't erase/flash DA14531

Sun, 2020-10-18 08:35 -- exxfuture



I think I might have bricked my DA14531 USB DevKit by flashing inappropriately modified SW onto it.

Now, when I try Connectiong through SmartSnippets Toolbox (v5.0.14) it prints the following:

[INFO     General            @20-10-18 10:30:46] Could not measure total IR len. TDO is constant high.
[ERROR    General            @20-10-18 10:30:46] No known chip found while opening JLink connection. Terminating proccess...
[ERROR    SPI Flash          @20-10-18 10:30:46] Failed downloading firmware file to the board.


手机很难连接上BLE设备(重复很多次成功),连接过程慢。 It' hard to connect BLE device

Fri, 2020-10-16 11:33 -- yykx

环境: DA14531 芯片,官方例程:da14531-da14585-586_reading_i2c_accelerometer_ble。keil 下debug.  iPhone 

      use DA14531, example da14531-da14585-586_reading_i2c_accelerometer_ble,  debug and running on keil, connect with iphone ble debugger app.

问题: 1. 手机重复多次,才有一次能连接上DA14531,连接上后查看服务属性没有问题。怎会差原因?

                it's hard to connect to DA14531, need try many times, and when connect successful, it's ok to see servic. why and how to solve it?

RSSI for power saving DA14531

Wed, 2020-10-14 14:49 -- lionel_Avnet


Can we use the RSSI input signal, to save power (before going in RX mode during a long time)

on the DA14531 there is a BLE_RSSI_SEL  register and value associated to this RSSI

In our application, most of the time the DA14531 is in deep sleep mode; 

when we wake up the DA14531, and see if we receive some advertising data (so DA14531 is in RX), to save power, is the RSSI signal is too low, can we go directly in Deep Sleep mode ? (so save time on the processing). 

bests regards



Problem with advertisement filtering policy

Mon, 2020-10-12 14:38 -- hamiddhosseini

Hello there,

I'm trying to implement a system in which only the whitelisted devices are allowed to scan but every device is allowed to send a connectino request.

As I've checked the adv_filt_policy in user_config.h  there is such an option for the filtering policy. However, when I set this option, I'm not able to see my device and send a connection request. Could you please give me some instructions about how can I fix this issue and  implement such an idea?

My goal is to indicate when a whitelisted device has sent a scan request.

Codeless change advertise name

Mon, 2020-10-12 12:26 -- kashyap.gada

Dear All,


I am using DA145xx_CODELESS - 6.380.10.4 SDK. I changed USER_DEVICE_NAME in user_config.h from

#define USER_DEVICE_NAME        "CodeLess"


#define USER_DEVICE_NAME        "VRT"


Recompiled the code and executed it. But still the name that is advertised remains CodeLess

What could be the reason?


How to use DA14531 soc as a client to connect to another ble server

Fri, 2020-10-09 07:51 -- Vaibhav Mishra

I'm new to the device and have very less knowledge about this chip. I would like to know if there is a possibility to use the DA14531 as a BLE client which connects to another Advertising BLE server like ESP32 or another DA14531.
Is there a possibility to achieve this connection ? and if yes could you please provide with a software example for simple connection.
Thanks in advance

How to program code to DA14531 without external memory?

Fri, 2020-10-09 07:38 -- MrWeng

We did not consider the use of external memory when designing. Now that the development has been completed, how can I burn the compiled code into the DA14531 chip? what should I do? Is there any document that I can refer to? do we need to care something? I have a DA14531 DEVKT-Pro, I look forward to your answers and help, thank you!


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