Part Number: WL1835MOD
Other Parts Discussed in Thread: WL1835
Hi,
We started producing a pcb board that uses WL1835MOD; the project seems to work well.
In the first four production batches (about 400pz) we found 32 pcb boards where WL1835MOD works badly.
At power up, WL18xx FW download is made and everything works correctly.
Subsequently, when i try to scan a wlan or connect to an AP, an error is reported in WL1835MOD and do not work.
On these boards we did both an electrical test and an X-ray inspection but we did not find any short-circuits or welding problems.
Analyzing with gLOGGER i see "main_dump, fault_type = 3, pc = 0x00011b3a, SCR_PAD9 = 0x00000000,8008693a0000033a1b0100"; this is reported with other DEBUGs but I do not know how to understand the type of malfunction.
Do you have a list of gLOGGER error types?
By executing DMESG from commands promt, known "wlcore: ERROR SW watchdog interrupt received! Starting recovery" and more errors.
Attached is the gLOGGER LOG and the DMESG report.
I've analyzed SDIO, WL / BT_EN, 32kHz_osc, etc. etc. but do not detect malfunction.
The UART_DBG_BT and AUD_OUT_BT lines are configured for NORMAL MODE, ie UART_DBG_BT = 1 (Pull-UP 10k), AUD_OUT_BT = 0 (Pull-Down 10k).
Our system uses a i.MX6DL CPU with YOCTO 1.7 (KERNEL 3.14.28) and the BUSIO SDIO is set to 50Mhz.
Could you explain the meaning of the error "main_dump, fault_type = 3, pc = 0x00011b3a, SCR_PAD9 = 0x00000000,8008693a0000033a1b0100"?
Do you have any suggestions on where the problem may be with the cards that have this issue?
Many thanks,
Fabio
