PCB Antenna for Tags

Mon, 2020-06-22 07:04 -- sr9213

Dear Dialog Team,

We are trying to leverage the antenna used in the DA14580_RD_WLCSP_SMTAG2_vC design for our Tags based on DA14585, but we have few queries:

1) Why is there a trace at the bottom layer of the antenna too and why are there vias connecting the top and bottom traces of the antenna? Don't PCB antennas have a trace on a single layer?

2) Can we remove the bottom trace of the antenna? Will it affect the antenna performance if we do so?

DA14585 BLE Transmission and reception

Fri, 2020-06-12 09:29 -- Hermus

Hello Dialog,

I am a newbie in Bluetooth filed.
I am currently send data to DA14585 from ble terminal on my mobile,
and running BLE Example

I tried to turn on the LED  through Bluetooth transmission in the suotar_task.c file as follows


Mon, 2020-04-27 03:19 -- jensint

1、 我定义一个da14585GATT服务,现在使用usr_send_data发数据的时候发现,发送20个字节,系统就挂了?这个什么原因导致的?下面是相关的代码
void usr_send_data(uint8_t* read_data, uint8_t len)
struct custs1_val_ntf_ind_req *req = KE_MSG_ALLOC(CUSTS1_VAL_NTF_REQ,
req->notification = 1;
req->handle = SPSS_IDX_TX_DATA_VAL;
req->length = len;


Wed, 2020-03-18 01:57 -- moiify


FCC/CE Certification Queries

Mon, 2019-05-27 09:00 -- blebot

Dear Dialog Team,

We made a prototype simple BLE tag based on DA14585. The antenna part is a direct implementation of your DA14580-RD-WLCSP-SMTag2-VC. I attached the schematic pdf of your design file for your reference. We are trying to do FCC/CE certification and are in contact with a certification vendor. Following are the queries he has raised:

GPIO assignment checking is active is active

Thu, 2019-02-28 09:20 -- Jasu

when I compile a code iget this warning .\..\..\..\..\sdk\platform\driver\gpio\gpio.c(97): warning: #1215-D: #warning directive: "GPIO assignment checking is active! Deactivate before burning OTP..."
#warning "GPIO assignment checking is active is active! Deactivate before burning OTP..."
how to deactivate GPIO assignment checking is active???????????

Adding custom handler in BLE host mode with external MCU

Wed, 2019-02-06 07:01 -- Nishal

Hi Dialog team,

I am trying to understand how can I add custom handler to the empty_template_ext. Basically we have STM32 as external processor. We are using UART for communication between STM32 and DA14585 with GTL protocol. We want to operate BLE in scanner/observer mode

With the existing code, I could get BD Address, scan for nearby devices. Now to build the application, we are looking for some custom implementation. Say we want to send a command from STM32 to DA14585 to blink LED, read some GPIO status, how can I achieve this.


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