DA14531

量产产品,发现部分蓝牙连接不稳定

Fri, 2020-12-25 10:15 -- liubinzh

您好,

我们使用DA14531碰到了一些问题,需要请教下。

我们的量产产品发现有部分产品蓝牙连接不稳定,有的甚至会连接不上,我们已经对32M晶振(3225封装,正负10ppm)使用频谱仪进行了定频校准,对于完全连接不上的后来修改代码测试发现如果关闭sleep模式蓝牙即可稳定连接。

进一步我们使用SDK6.0.14.1114的样例代码(ble_app_barebone)进行测试(XTAL32M_TRIM_VALUE值使用定频校准所得到的)也是如此。当ARCH_EXT_SLEEP_ON模式的时候能搜索到广播信号,但是无法连接设备,当ARCH_SLEEP_OFF模式的时候可以搜索到广播信号,可以稳定的连接。

同时我们用示波器看了下32M晶振的起振情况,发现在睡眠模式下每次BLE唤醒后晶体震荡不稳定,有停振现象。另一方面我们尝试对芯片进行稍微加热,发现不能连接的设备在温度稍微上升(10度左右)的时候即可连接,此时晶体在休眠唤醒后震荡比较正常,等待温度下降到室温,此时又无法连接。

请问出现这种现象可能是什么原因呢

Different power consumption DEVKIT module vs SOC

Thu, 2020-12-24 16:39 -- essele

Hi,

I'm just getting started with a few examples using the DA14531DEVKIT-PRO and I have two daughterboards, the normal SoC one and the module based one.

Using just the barebone ble example with ARCH_EXT_SLEEP_ON, on the SOC version I see a current consumption (on average) of about 1.6uA, yet on the module based one I see just over 10uA (measured using a multimeter connected to J9)

I am assuming that this is because of te flash not being properly disabled as per the following:

Can not write TIMER1_CTRL_REG

Tue, 2020-12-22 23:35 -- lecarter190

Hi,

I am modifying the barebones example using the PRO development board and the DA14531MOD daughterboard.

I've tried to attach a screen shot of the problem but can not figure out how.   I am trying to write to the TIMER1_CTRL_REG using SetWord32(TIMER1_CTRL_REG,value) where value = 0x126400.  The Disassembly window shows instruction STR r0,[r1,#0x00] where R0 = 0x00012640 abd R1 = 0x50004000.   But memory location 0x50004000 does not change from 0.

Custom PCB antenna question.

Sat, 2020-12-12 12:04 -- adam.stroz

Hello, 

I have a question about design a custom PCB for DA14531. I created a pcb with ZOR Antenna, for 1,6  mm Substrate (from your doc. AN-B-027). And i place a output PI filter (C4,C2,C3 on screenshot) close to the DA14531 RF pin. And my question is, it is correct to connect antenna directly to PI filter out (C4 on PCB)? Do i need a microstrip line? Is my desing correct? 

  

DA14531 例程程序如何烧录到OTP

Thu, 2020-12-10 01:40 -- yykx

我们从网站(https://www.dialog-semiconductor.com/products/connectivity/bluetooth-low-energy/products/da14530-and-da14531)下载例程 “DA14531-DA14585-586 Reading I2C Accelerometer BLE” 进行开发, 目前已经用keil的debug 模式测试过。 现在我们要下载程序到OTP进行测试。

请问软件需要做什么修改吗(比如起始地址),然后这么烧录到 OTP?

感谢!

Pages

Subscribe to RSS - DA14531