About Aaron McNeil

Aaron McNeil · 2021-11-08

I am trying to determine the cause of resets happening in my application. It does not seem like the RCC->CSR register is working properly.I tested this out by manually grounding the NRST pin and setting a break point in my code before main(). The CSR...

Aaron McNeil · 2021-10-15

We have been using an STM32L476 in a product that schedules periodic wake times. Recently we have discovered a bug where the unit will go to sleep and never wake back up. What we have noticed is after generating another interrupt to wake the unit up ...

Aaron McNeil · 2019-10-25

I am trying to implement a procedure to update firmware in a STM32L476 by jumping to the bootloader from user code. I am able to connect Boot0 to 3,3V and enter the bootloader just fine. But trying to jump there from user code seems to be giving some...

Aaron McNeil · 2019-06-19

I am using a STM32L476. I am using the counter mode on the low power timer to generate an interrupt after a given period. When I am in run mode, this interrupt works just fine. However, when I use the interrupt to try and wake the MCU from Stop2, I g...

Aaron McNeil · 2019-05-30

I am trying to achieve the lowest power consumption possible when entering Stop2 mode with the STM32L476. I have verified that all of my GPIO are in the correct state before entering Stop2 mode. I am also very confident that it is not any external ci...

Aaron McNeil · 2021-11-08

This is exactly what I'm trying to accomplish but none of the bits are ever set no matter what type of reset occurs UNLESS I reset it with my debugger. I do read the register before main does anything.

Aaron McNeil · 2021-11-08

STM32L476. I have an array that holds the last 10 reset values and I can print them out in hex. Each reset is always a 0x600 unless I reset with the debugger and its a 0x1400600. This holds true with and without the debugger connected.

Aaron McNeil · 2021-10-15

Bingo. I think this is my problem. Thank you!

Aaron McNeil · 2019-10-25

I understand that disabling the interrupts this way isn't the cleanest, but I am just using this procedure as a test to try to see if I can jump to the bootloader successfully. I am calling this function before I've even enabled any interrupts. When ...

Aaron McNeil · 2019-06-20

I found the problem I was having. I am using external SRAM in my application and before I go to sleep, I disable the SRAM. I have most things I need mapped to internal SRAM when in the sleep routine, but the hlptm1 handler is defined in my main file....

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User Activity

Troubleshooting reset causes using RCC->CSR register

RTC Alarm Register Corruption

Jumping to bootloader from user code in STM32L476

Low Power Timer Wake Up from Stop2 (stuck in interrupt)

High Current Consumption in Stop2 mode STM32L4

Re: Troubleshooting reset causes using RCC->CSR register

Re: Troubleshooting reset causes using RCC->CSR register

Re: RTC Alarm Register Corruption

Re: Jumping to bootloader from user code in STM32L476

Re: Low Power Timer Wake Up from Stop2 (stuck in interrupt)