I have implemented the external watchdog (Wdg_43_VR5510) for PMIC. But it is going into endless loop in Pmic_VR5XX_TimeoutLoops_StateTransistion (refer below).
Currently it is in INIT_FS state, as per the state diagram it says we need to have a good watchdog refresh to change the state from INIT_FS to Wait_ABIST2.
To Satisfy the first good watchdog refresh within 256ms, we have called watchdog trigger API after Wdg_43_VR5510_Init function during EcuM Initialization.
We need to know, how and where to call the first watchdog refresh. So that the state transition happens from INIT_FS to wait_ABIST2.
Hello SagarZala,
I wonder if you have tried the two out-of-the-box examples in S32 Design Studio (S32DS)? Will they have the same problem? May be they are very good references for you.
Dear @SagarZala ,
Thank you for your question. VR5510 is commonly paired with the S32G microprocessor. For this, the available drivers for VR5510 should be provided under the S32G RTD packages. Which RTD version are you using and which specific example is it?
Taking the RTD 4.0.0 version as an example, you can find the documents "RTD_WDG_43_VR5510_IM" and "RTD_WDG_43_VR5510_UM" under the path C:\NXP\SW32G_RTD_4.4_4.0.0\eclipse\plugins\Wdg_43_VR5510_TS_T40D11M40I0R0\doc. The document "RTD_WDG_43_VR5510_UM" describes more detail.
It is worth mentioning that the watchdog is triggered via the I2c command and it depends on the I2c speed. When the I2c speed is low, the watchdog may not be triggered successfully within the watchdog's window open time. To avoid this problem, we recommend that the user configure I2c with high speed and use a large window period when it is enabled.
To set the watchdog refresh, you can configure the WD_WINDOW [3:0] to obtain the refresh time. As shown in the following figure:
Refer to "Document VR5510 Product data sheet", page 60, Table 45. Watchdog window period configuration, as shown in the screenshot below. And after setting the correct WD period time, you need to correctly feed the WD.
Hope the above information is helpful to you.
Best Regards,
Celeste
