About JustSomeGuy

JustSomeGuy · 2024-11-20

I am writing an LPTIM driver without HAL or LL drivers on the B-L072Z-LRWAN1 board. I have been getting a number of odd behaviours here that I am hoping someone here can shed some light on.1) cannot enable continuous start -bit 2 of the CR r...

JustSomeGuy · 2024-11-18

I am using the B-L072Z-LRWAN1 and trying to code LPTIM with interrupts and no HAL. The code seems to be getting stuck in the Infinite_Loop section in the startup.s file. The comments around this loop say that an unexpected interrupt was triggered. If...

JustSomeGuy · 2024-11-13

I am writing my own SPI driver, and using two B-L072Z-LRWAN1 boards to test them; one as an SPI master and one as a slave. On the master device, whenever I enable the SPE bit in the function SPI_Transmit(), it never actually sets to '1', even though ...

JustSomeGuy · 2024-11-05

I am trying to write interrupts bare-metal style. When I try to set the interrupt vector for LPTIM1 (using B-L071Z-LRWAN1) using this method, NVIC_SetVector(LPTIM1_IRQn, (uint32_t)&LPTIM1_IRQHandler); the compiler gives me this error:../Core/Src/main...

JustSomeGuy · 2024-11-01

I am using the B-L072Z-LRWAN1 board. All global variables are their initialized values up until SystemClock_Config() executes HAL_RCC_OscConfig() which executes HAL_InitTick(). Once it reaches that point, all the global variables get filled with garb...

JustSomeGuy · 2024-11-19

Oh goodness. I've been staring at the code for too long and didn't notice that I wrote the IRQ handler function as LPTIM1_IRQ_Handler and not LPTIM1_IRQHandler. Thanks.

JustSomeGuy · 2024-11-18

I had the same problem and this solved it. It was hard to narrow down the source, since as soon as it went into that while trap, the debug would just show the controller looping through a chunk of ROM. Thanks, Peter!

JustSomeGuy · 2024-11-13

1. Thanks, obviously I was misunderstanding transmit/receive.2. This worked for me. Weirdly enough, sometimes I would get SPI communication showing up on the oscilloscope with the previous method. Then I changed the baud rate prescalar and it didn't ...

JustSomeGuy · 2024-11-05

Thanks for your response, Tesla. It turns out that not having the prototypes in main.h was the exact problem. It makes sense in hindsight. Appreciate it!

JustSomeGuy · 2024-11-05

I know what declaration is, you arrogant nobody. I am simply stating that your answer is useless because you just repeated what the compiler told me, but in a more snarky tone. And now you have taken to belittling me because you assume I don't know w...

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LPTIM Multiple odd behaviours

Stuck in Infinite_Loop

SPI CR1 bit SPE will not set

cannot use NVIC_SetVector

All global variables set to non-initialized values after HAL_SYSTICK_Config()

Re: Stuck in Infinite_Loop

Re: RCC stuck!

Re: SPI CR1 bit SPE will not set

Re: cannot use NVIC_SetVector

Re: cannot use NVIC_SetVector