TI中文支持网
TI专业的中文技术问题搜集分享网站

Is CC2540 different with CC2541 on the RTC part?

Based on the BLE-CC254x-1.4.0 SimpleBLEPeripheral application:

a. Config xPOWR_SAVING

b. Config xCC2540_MINIDK

c. Use osal_getClock() to get the RTC time

As a result:

a. Tested on CC2540, the clock looses about one second a minute or one minute a hour

b. Tested on CC2541, the clock is accurate

Is CC2540 different with CC2541 on the RTC part? Any solution? Thanks!

Albin Zhang:

Hi Hansong, 

not so sure about your question. 

but anyway, you can consider the two chips are the same, expect of the communication interface, I2C or USB. 

BR. AZ

宋寒松:

回复 Albin Zhang:

AZ,

目前我已经把问题反馈出来,另外两个朋友也测到了同样的问题,如果有时间的话,可否帮忙先简单验证一下?

因为我们只是基于TI标准的SimpleBLEPeripheral进行简单的修改,基本上可以确定要么是固件库的BUG,要么是芯片的差异。

可是这些部分,我们都无法进一步往下查,只能期待TI的协助了,谢谢!

PS:

CC2541比较精准而CC2540会慢,同样的配置、同样的程序和同样的板子只是更换芯片而已

附件是我这边稍作修改的程序,用LightBlue读取CHAR5就好,大约半个小时就可以看出问题了

Hansome

宋寒松:

没有TI的工程师愿意简单的验证一下吗?真的极有可能是固件库的BUG或者是CC2540和CC2541之间RTC部分的差异。

赞(0)
未经允许不得转载:TI中文支持网 » Is CC2540 different with CC2541 on the RTC part?
分享到: 更多 (0)