About Scott Löhr

Scott Löhr · 2022-07-18

Hello - just trying to make a sanity connection to AWS IOT, unsecured port 1883, but it fails with a very non-specific error like not connected. I changed the demo app to use unsecure port 1883 and it connects and successfully sends the MQTT messages...

Scott Löhr · 2022-04-28

In v1.13.3 BLE full_stack it looks like general scanning is locked-out forever after terminating a direct connection establishment procedure. Using the Nucleo dev boards as a master and a slave, start general scanning with aci_gap_start_general_disco...

Scott Löhr · 2022-04-28

Hello - I was using the results of aci_hal_get_anchor_period() just a few months ago, but now in v1.13.3 BLE_full_stack, it is returning ERR_UNKNOWN_HCI_COMMAND. Is there some command that needs to be sent to enable getting the anchor period? If ther...

Scott Löhr · 2022-04-09

Can only be duplicated using LPTIM2, enabling interrupts for LPTIM1 works fine.Hard Fault can be resolved by only re-locating the VTOR to a 512-byte boundary.

Scott Löhr · 2022-03-09

Has anyone else seen this?I have never seen such a problem in years of debugging with EWARM and STM32's through sleep modes: using source and project files that debug fine with EWARM 9.20.2, now with 9.20.4, the IAR IDE is hung on the ST LINK driver ...

Scott Löhr · 2022-09-10

I have a deterministic order of steps to be able to download and debug from IAR:in Project-->Options-->Debugger-->ST-LINK-->"Always prompt for probe selection" is checkedwhen prompted for probe, select the one connected to the MMG (obviously), press ...

Scott Löhr · 2022-09-09

I guess that this is as good of a place as any to share my latest experience wrt programming or just connecting to the STM32WB5MMG: I programmed my "release" code which attempts to be very power saving which includes re-configuring debugger lines as ...

Scott Löhr · 2022-07-21

Well, I figured it out - I got the ST Nx_MQTT_Client sample app to connect and publish and receive MQTT messages with my account on AWS IOT after days of study and tedious trial and error. It has to be only by using secure with the x509 certificate, ...

Scott Löhr · 2022-07-14

ST Cube support for B-U585I-IOT02A with FreeRTOS is all packaged in this June 2022 release from ST:https://www.st.com/en/embedded-software/x-cube-aws.html

Scott Löhr · 2022-06-14

It looks like this issue is fixed in the latest release v9.30.1:https://updates.iar.com/FileStore/STANDARD/001/001/664/EWARM-9301-50054.exe

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How to make the Nx_MQTT_Client (STM32Cube_FW_U5_V1.1.0) connect to AWS?

How to re-enable general scanning after terminating a direct connection establishment?

Why now ERR_UNKNOWN_HCI_COMMAND return value to aci_hal_get_anchor_period()?

LPTIM2 - enabling any interrupt causes a Hard Fault if the VTOR is on a 256-byte boundary.

It looks like ST LINK sleep support broke on IAR EWARM v9.20.4

Re: How to flash Wireless Coprocessor Binaries with STM32CubeProgrammer? Trying to flash the STM32WB5MMG Bluetooth module on a B-U585I-IOT02A (STM32U585AI) board.

Re: How to flash Wireless Coprocessor Binaries with STM32CubeProgrammer? Trying to flash the STM32WB5MMG Bluetooth module on a B-U585I-IOT02A (STM32U585AI) board.

Re: How to make the Nx_MQTT_Client (STM32Cube_FW_U5_V1.1.0) connect to AWS?

Re: I have B-U585I-IOT02A board. How can I install freeRTOS middleware? The only option shown is Azure RTOS.

Re: It looks like ST LINK sleep support broke on IAR EWARM v9.20.4