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MWebj · 2020-09-25

RM0376 Reference manual for STM32L0x2 DocID025941 Rev 5 states in 14.9 "Temperature sensor and internal reference voltage" :The following formula gives the actual VDDA voltage supplying the device: VDDA = 3 V x VREFINT_CAL / VREFINT_DATAThis can't be...

MWebj · 2020-09-20

RNG, CRC, and DMA are all peripherals on the STM32L08x AHB bus. If I try to write to CRC_INIT before enabling CRC clock in RCC then STM32-WorkBench Memory window correctly just shows zeroes. But after enabling CRC clock in RCC_AHBENR and writing to C...

MWebj · 2019-06-16

I need to disable Cortex CCR.UNALIGN_TRP bit, but I can't find the proper place in the CubeIDE generated code where this kind of init code should be inserted. Does anyone out there have a clue?

MWebj · 2019-05-30

The CUSTOM_HID_ReportDesc_FS is defined in usbd_custome_hid_if.c as~~~__ALIGN_BEGIN static uint8_t CUSTOM_HID_ReportDesc_FS[USBD_CUSTOM_HID_REPORT_DESC_SIZE] __ALIGN_END~~~The question the arises where to define USBD_CUSTOM_HID_REPORT_DESC_SIZE to ma...

MWebj · 2019-05-24

I have just installed CubeMX 5.2.0, and opened an saved Cube .ioc file. When I go to Project Manager the path to "Project Location" seems to be fixed to <Cube Project dir>/<Project name>I've uninstalled Cube, deleted all directories and files related...

MWebj · 2020-10-04

Found the problem. Obviously the setting of ADC_SMPR is extreamly important for the validity of the ADC value. As has been discussed above must the conversion value of ADC_INT17 (VREFINT_DATA) be lower than VREFINT_CAL which for my chip is 1667. And ...

MWebj · 2020-10-04

This is really wheird. Theoretically the formulas in the RM are correct, but not in practice.VREFINT_CAL is 1667 on my chip. For VREF+ == 3V -> VREFINT_V / 3 = VREFINT_CAL / 4095 -> VREFINT_V = 1,221 which is ok acc.to datasheet. Measuring ADC_IN17 ...

MWebj · 2020-09-27

No, VREFINT_DATA is not the readout from the internal VREF source. It's the A/D conversion of the external Vdda pin on the processor. VREFINT_CAL is the factory stored ADC value of the internal precise voltage reference of 3V. It just makes no sense ...

MWebj · 2020-09-23

Seems to have found the cause. CRC was enabled in STM32-Workspace pinout configuration. When I removed it then RNG and DMA could be enabled and started to work. Beats me why.

MWebj · 2020-09-21

RCC_AHBENR is acc.to ref manual 0x40021000 + 0x30 which corresponds to address used. RCC_AHBENR is also common for CRC, RNG and DMA Clock enable so if it works for one, then it should work for the other. Initially after start is RCC_AHBENR=0x00000100...

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STM32L0x2 bug in reference manual

STM32L08x RNG and DMA not accessible

Proper place in CubeIDE generated code to put init code for Cortex CCR register

STM32CubeIDE: Configure USB HID CUSTOM_HID_ReportDesc_FS structure

How to change "Project Location"

Re: STM32L0x2 bug in reference manual

Re: STM32L0x2 bug in reference manual

Re: STM32L0x2 bug in reference manual

Re: STM32L08x RNG and DMA not accessible

Re: STM32L08x RNG and DMA not accessible