Using CodeLess AT-Command firmware

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Mon, 2020-09-14 16:29
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kotaromatsukubo
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Using CodeLess AT-Command firmware

Hi,

I'd like to know the details of CodeLess AT Command firmware on DA14585.

1) I understand that CodeLess supports Sleep Mode. But how can I keep Advertising during Sleep Mode? I want to keep DA14585 in low consumption mode because our product is really power sensitive. But I need to keep the device advertising every time.

2) How to change BLE PHY Mode in CodeLess?

3) I can't find a command to change the device name. How can I change it from MCU without changing source code?

4) The connection between DA14585 with CodeLess & Smartphone/Tablet is secure?

Thank you.

Device:
DA14585
星期二，2020-09-15 09:25
kotaromatsukubo
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Hello, I'd like to ask you

Hello, I'd like to ask you one more thing.

DA14585 has no Flash but OTP. In that case, how the device keep Bonding Data or something without Flash? After hardware reset, they will be gone?

Also, I want to change & keep some setting like UART Baud Rate, but there is no command to save the change. So if I do reset the device, all of the settings will be gone and back to the default. How can I solve this matter with CodeLess software?

Thank you.

Tue, 2020-09-15 14:23
PM_Dialog
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Hi kotaromatsukubo,

Hi kotaromatsukubo,

  1. You should use the AT+SLEEP in order to put the system in sleep mode. Please keep in mind that when the device is sleeping, all the peripheral domains, including the UART, are powered down. To do so, if you need to send AT commands over UART, you should also use UART HW Flow control in order to be woken by a high to low condition on as defined by the AT+FLOWCONTROL command.
  2. Could you please clarify it?
  3. All BLE configuration (BD address, device name etc.), should be changed in the CodeLess source code. Specifically, the macro should be change for the device name is the USER_DEVICE_NAME in the user_config.h file. After that, you should re-build the project. Please also check out ourBLE Advertising Tutorial (HTML).
  4. I would recommend first check the AT+SEC from the user guide -UM-B-140: DA14531-DA14585 CodeLess. The specific commands the security/pairing mode. 4 different modes are supported :
    1. LE secure connections pairing
    2. Legacy pairing with MITM protection
    3. Unauthenticated No MIMT protection (Just works)
    4. No security
  5. 如果您不打算使用外部SPI Flash或EEPROM，则您可以将数据存储在保留RAM的uninit部分中 - 请参阅SW示例：DA14585 / 586检测重置源. In our SDK example, all the bonding information is stored either to SPI Flash or EEPROM, Please check ble_app_security example of SDK6.

Thanks, PM_Dialog

Accepted answer
Tue, 2020-09-15 20:10
kotaromatsukubo
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Hi,

Hi,

Thank you for your kind support and navigation. Could you elaborate more about a few things in order to understand CodeLess firmware well?

1. Yes, I will use AT+SLEEP to set the device in low power. Then, can the device keep advertising during sleep mode? I mean, I'd like to continue all active advertising operations when entering sleep mode.

2. As for my question of BLE PHY Mode, I just want to know how the device switches to BLE 2M PHY or LE Coded PHY in CodeLess. Because I could not find any of command related to that.

3. Regarding the device name, I have a little concern at my use case. I need to put a lot of end products in the same place. So I have to pick them out which one is the one I want to connect from Smartphone. To pick it up correctly, I want to change the device name from external MCU using AT-Command at runtime. For example, I would put some serial number or unique ID to the device name. I understood that I can change it in the CodeLess source code, but I need to change the source code one by one at in that case. So It would be better using AT-Command to change it. Also, it would be great if it can be saved to Retention-RAM in order to keep it even if the device turned off or reset. Any solution for that?

4.我不打算使用外部闪光灯或EEPROM，所以我只是担心消失绑定信息，就像那样。根据您的解释，即使设备已关闭或重置，我也可以在保留RAM中保存一些重要数据。我的理解是否正确？

Thank you.

Mon, 2020-09-21 17:46
PM_Dialog
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Hi kotaromatsukubo,

Hi kotaromatsukubo,

  1. Yes it is possible. The device will sleep between advertising or connection intervals.
  2. Therese isn’t such a command. The BLE 2M PHY is not supported. Regarding the LE Coded PHY let me ask internally.
  3. 可能您可能会添加自定义命令：http://lpccs-docs.dialog-semiconductor.com/UM-140-DA145x-CodeLess/customcommands.html.
  4. 您可以将数据存储在保留RAM的未初始化区域中，因此您可以在系统重置后保留它们 - 在断电之后没有。

Thanks, PM_Dialog

Tue, 2020-09-22 10:02
PM_Dialog
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Hi kotaromatsukubo,

Hi kotaromatsukubo,

谢谢你的问题。我们将在论坛上脱机，直接支持您的问题。

Thanks, PM_Dialog