About NSR

NSR · 2022-06-14

I have a project that inadvertently appears to have what looks like the bootloader area.I'm using STM32CubeIDE and when I program the board from the IDE, it runs fine and all is ok. If I press the reset button then the board ceases to run.I've duplic...

NSR · 2021-07-28

Using an STM32H750 part, I've lived with the slack tolerance of the HSI until coming to the UART where a speed of 9000 bps is experienced from a configured 9600 bps. This is too far out to be of any use at all and therefore have decided to put on an ...

NSR · 2021-06-22

I have a program where data is read into the dataStore buffer of a double buffered system from external flash memory via SPI upon detection of an interrupt, around every 700ms; the only ISR sets a value and if the block in my main loop detects this v...

NSR · 2021-03-16

When using the Nucleo board with the STM32H743 (Rev V) I can trigger a DFU event within software and using the STM32CubeProgrammer it can detect the presence of the board in DFU mode - so far so good. When using my own design (using a Rev Y part) I c...

NSR · 2021-03-08

I'm trying to implement a queue system for external storage attached to the SPI. I have three parts:Add an item to the queueProcess an item from the queueHAL_SPI_RxCpltCallback (my implementation to override the weak default implementation)In doing s...

NSR · 2022-06-15

Thanks for this suggestion. I cleaned around the BOOT0 jumper switch and that appears to have solved the problem - it must have kept starting in DFU mode. There's another board that has the opposite problem, trying to get it into DFU mode results in ...

NSR · 2021-10-19

I've looked into this a little further. Pin function using TIM1_CH2 can be obtained using PE11 or PA9. This is of course assuming that you're using the same STM32F439ZI on a Nucleo-144 Development Board.When using PA9, you will probably experience a ...

NSR · 2021-10-18

HiI managed to find a different way of doing what I needed to do.However, one thing that I have learned is that if you're using a Nucleo board, as one generally does to kick off development, you may find some of the connecting pins have a particular...

NSR · 2021-07-05

Ok, I've tried identifying the IRQ that's interfering with my SPI reads by going against the grain and implementing a long loop within an ISR so that I can periodically monitor the flags at 0xE000E100 to 0xE000E4EF, to no avail. I'm guessing that the...

NSR · 2021-07-02

It appears that I have an erroneous interrupt occurring. At the beginning of my blocking read from SPI function, I've inserted: __disable_irq();and at the end: __enable_irq();The problem appears to have gone away. Now I don't use interrupts for the S...

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Default bootloader characteristics

Configuring HSE using CubeIDE on STM32H750

STM32H7 Hard Fault

Configuring USB port for DFU

How to (successfully) apply mutex for queueing SPI jobs?

Re: Default bootloader characteristics

Re: Configuring Idle State for Timers

Re: Configuring Idle State for Timers

Re: STM32H7 Hard Fault

Re: STM32H7 Hard Fault