Hi All,
I am working on the nRF52840 Zigbee protocol and I am using nRF5_SDK_for_Thread_and_Zigbee_v3.0.0_d310e71 SDK.
With the help of engineers and other stuff, I am able to design my end product using Zigbee and Alexa communication.
My product is about, It is a Zigbee based light controlling device which uses Alexa as a command sending device for controlling brightness and On/Off.
It is the last stage of production but while testing we have an encounter with the Hardfault issue. And enable to trace and yet no solution found also I had been touch with nordic engineers from the start of my project to till today but we are not able to fix this issue yet.
Here is my ticket - https://devzone.nordicsemi.com/support/234827
My project, I am using 1 as Input pin ZCD (Zero Cross Detection pin), 1 as Output pin Trigger pin (Trigger for turning On/Off ), and 2 timers (Timer 4 and Timer 0).
Workflow - The device is powered with AC voltage, When there is ZCD detection using Timer as duty cycle (i.e., brightness level), we pass timer values for 0msec to 10msec (i.e., 0 % to 100%). This we pass for both the Positive cycle and the Negative cycle of the MOSFET trigger.
The result - While testing this device after 6 to 8 hours it enters into the hard fault handler we tried to figure out the issue but still no success. And as per one of your engineer suggestions, may be cause for hard fault issue is Timer 0 which is configured as continuous as we are using disable an interrupt routine. And as per his suggestion, we have configured timer 0 as a one-shot timer. You can check the ticket for more details.
After his suggestion, configured Timer 0 (which I am using in my project as a one-shot) but its interrupt routine means timer 0's interrupt routine not executing. Then we tried with other timers like 1 but the device starts flickering. And If configure the timer as a continuous timer using "nrf_drv_timer_extended_compare()" instead of one-shot as done before then it works smoothly.
I am not able to figure out this Hardfault issue and Timer one-shot issue.
Attached are my code and schematic file. Kindly help me to solve this issue as early as possible. It is very urgent for me as we are in the last stage of production only due to this hard fault issue we are stuck here.
I am attaching 2 code, wherein one(Zigbee_Dimmer-0.9.4) we have used continuous timer and we stuck in hard fault issue. And another one(Zigbee_Dimmer-0.9.6.1) is where we have configured timer as a one-shot timer as a solution for hard fault issues.
a)Zigbee_Dimmer-0.9.4
b)Zigbee_Dimmer-0.9.6.1
Please help me to solve this issue.
Thanks in advance.
Rohit R
