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cjwilde
Associate II
since ‎2019-04-30
‎2023-06-14

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  • 12 Posts
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User Activity

Has anyone seen fluctuations in the pressure reported by LPS22HB sensor?

2021-10-12
In our application, the LPS22HB has ODR=1Hz. Every 10 seconds the pressure is read from the device and converted to millibars. The pressure is generally around 990 mbar, and data collection is done over hours of time. At random times, the pressure...

What do I do with reading outside the 260 - 1260 hPa range of the LPS22B sensor?

2021-10-12
The LPS22HB has an absolute pressure range of 260 - 1260 hPa. It's possible for the 24-bit pressure output value to fall outside that range. A value < 0x104000 is below 260 hPa, and a value above 0x4EC000 is above 1260 hPa. What should I do with a...

STM32H7: Why does the first call to HAL_MMC_WriteBlocks_DMA take so long to return?

2020-07-11
We are using the SDMMC interface in an STM32H7 device. The first call to HAL_MMC_WriteBlocks_DMA takes anywhere from 50-350ms to return. Susequent calls take 2-5ms to return. The long delay messes up the timing in our application. What is the rea...

How can we get SDMMC working on STM32H743?

2019-10-16
We have a working design in an STM32F745 device that talks to an eMMC device over SDMMC.  We ported the design over to an STM32H743 device, using CubeMX to configure the device to match the F7, and the SDMMC interface doesn't work.  We've gone throug...

Problem: If I set RTOS task priority to value higher than osPriorityNormal causes a Hard Fault when running on STM32F47xx. Has anyone else encountered this?

2019-04-30
I'm running CubeMX 5.1 with FW_F4 V1.24.0 and Atollic TrueStudio 9.3.0. I have eleven RTOS tasks defined in CubeMX, but only one is actually invoked with its StartTask routine. As long as the priority on the task is osPriorityNormal(0) or lower, th...
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