HL8548-G hangs sending body AT+KHTTPPOST

Hello,

I am developing a product based on the modem HL8548.

The device sends photos to a server through the HL8548, via http message. The device is working fine, most of the images are sent correctly to the server.
But there are about 3% of them that don´t arrive. I have analyzed the problem in depth, and I have found that the modem hangs in the middle of sending the failed images. Then, the modem doesn´t response until it is reset by hardware.
The voltage of the HL8548 seems good at all times.

Could you help me please with this issue? Why could the HL8548 hang?

I have been trying to get additional information through the DEBUG_TX and DEBUG_RX, AT+TRACE active, but received just a byte from the HL, I don´t know why. I don´t find anywhere the programs 3G FTT and Mobile Analyser. Could these pins give me more info about the problem?

More info:
Model: HL8548-G
Revision: RHL85xx.5.5.14.0.201502091756.x6250_1
Software Version: 07
Serial Number: HE724402470610

Thanks

Hi fabianburillo,
The firmware 5.5.14.0 is really too old, could you help to upgrade to firmware 5.5.25.0 ?

For Mobile Analyser or 3G Firmware Trace Tool, you can contact your Distributor or submit a ticket at “Contact Us” on sierrawireless.com

Thanks,

Thanks jerdung,

I’m trying to upgrade the firmware but it seems I can’t use the AT+WDSD command with this firmware version:
AT+CGMR
RHL85xx.5.5.14.0.201502091756.x6250_1
AT+WDSI=?
+WDSI: (0-8191)
OK
AT+WDSI=8191
OK
AT+WDSD=?
ERROR
AT+WDSD=12565056
ERROR

This old firmware can’t support WDSD command?

Then, I read I can use OneClickTool to update the firmware, via UART. I have a custom HW. I am wondered which is the UART port of the modem used to update the firmware?

Thanks,

Fabian

Hi fabianburillo,
The OneclickTool should be used with USB port.
Please install USB driver at https://source.sierrawireless.com/resources/airprime/software/hl854x-usb-drivers
Download .exe file at https://source.sierrawireless.com/resources/airprime/software/hl8548-hl8548-g-hl8549-and-hl8549-g-firmware/#sthash.9ixK5O1h.dpbs

Thanks,

Hi Fabian,
In v5.5.14, Package local download by +WDSD is not supported yet.
+WDSD is supported from v5.14.4.0.

Thanks jerdung,

My Windows 10 PC doesn’t detect the HL8548 USB. I have tried to connect it to another PC and nothing. The USB connections of the board are correct and when I connect the board to the pc, it has 5 V in the VBUS input of the HL8548. It does not detect the USB connection even when I can see the modem on and I can successfully communicate with AT commands through the UART.

What I can be doing wrong? My OS? Is there any command to enable or disable USB, or any command to see in real time the USB connection?

Thanks again

Hi Fabian,
Please make sure that the USB configuration is correct, https://source.sierrawireless.com/resources/airprime/hardware_specs_user_guides/airprime_hl8548_and_hl8548-g_product_technical_specification/#sthash.KD7jK7o2.dpbs

You can refer this topic to upgrade your device HL8548 firmware update

Thanks,

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