the BUSY switching time so long to 10ms

[wangpengli]

After radio.init called, we called the radio.rx(0xffffff) for into the rx mode , but when I test it ,I found the switching time is 10ms.

the code like this:

tick1 = HAL_Gettick(); Radio.Rx(0xFFFFFF); tick2 - HAL_Gettick(); printf(“switch time = %d\n”,tick2-tick1);

[wangpengli]

I check the busy switching time in the RM0453 document, and checked it from SX126X DS , found like blow:

the switching time should more less than the 1ms.

Pls check it , thank you.

[wangpengli]

I use the pingpong demo app and the JC1 devkit board for test. and if I add set-standby use the STDBY_XOSC instead of the default STDBY_RC, the issue is same.

I also try use the SetRxTxFallbakMode set to XOSC , the issue is same too.

[wangpengli]

I made the same test case use STM32MCU + SX1268, no problem ,all of the switching time less than 1ms.

[YoannBo]

Hi,

on the nucleo, there is a TCXO. The TCXO requires a wake up time. in the cubeWL_1.0.0, the TCXO_WAKE_UP_TIME was set at 10ms, Probably this is what you see.

To change this, you can go in SubGHz_Phy/target/radio_board_if.h / Radio maximum wakeup time (in ms) /

define RF_WAKEUP_TIME 10U

This 10 can be lowered to 1ms without impacting the RF performances.

[wangpengli]

OK, Got it , thank you , I changed it and seems the issue is resolved .

[RKOUSTM]

Hi @wangpengli,

Regarding the point for which you opened the issue, as it is resolved, please allow me to close the issue.

With regards,