About SSmit.13

SSmit.13 · 2025-01-15

Hi I have am using the Timer2 on the STM32L433 chip, and for some reason the interupt gets called as soon as timer is started. Below is my code, and the clocks are running at 60MHz. Anyone any idea what I have done wrong? Many ThanksScott. void m...

SSmit.13 · 2025-01-14

Hi I am using a STML4xx processor and use HAL for system initialising, and sending strings through the USB port. It works most of the time. I call the below function SendString(...) to send string through the USB port , never within an interupt. I h...

SSmit.13 · 2024-12-08

Hi I have a STM32L433 running at 16MHz and having a strange issue. I have setup the rtc and within the Systimer interupt I display the current time (the systimer is 1KHz and every 1000 ticks I get the second , at this point I read the clock and di...

SSmit.13 · 2024-10-16

Hi I am using a STM32L433 and have a digital input pin, which is checked on bootup and enables the USB if 3.3v is in the pin. When working in debug mode, it always works, but when I switch to release mode , using stm32CubeIDE , it always reads 0v,...

SSmit.13 · 2024-10-14

Hi I am working on an STM32L433 using STM32IDE. When running in debug mode, the USB CDC is recognized when plugging in the cable (into Windows 10 and 11) . But when I compile as release mode the USB isn't recognized . I am using the HAL for USB . An...

SSmit.13 · 2025-01-17

Hi Imen Added a short delay (and tried longer), but no luck. CheersScott

SSmit.13 · 2025-01-17

Hi JWMany thanks for your reply. I added the line for setting the TIM2_EGR.UG , and cleared the TIM2_SR.UIF flag, see below up date. But still the interupt routine is called straight after enabled. Any idea what I am doing wrong? ThanksScottvoid Ti...

SSmit.13 · 2024-12-09

Hi I have found the issue, after anytime the CR was updated the INIT bit was set for a short time, but enough to cause a delay. The way around it was to clear the INIT bit before locking the RTC registers again. ThanksScott

SSmit.13 · 2024-10-16

I added the line:__DSB();after the clocks being enabled, but never made a difference. But when I added a 2ms delay after GPIOB->MODE and this worked.Where do I add the DSB command, and is it just the DSB() on its own?CHeersScott

SSmit.13 · 2024-10-16

Many thanks for your reply.I havent come across this before, do I call it for all clocks, or is it 1 command takes care of it all?I can add "__DSB();" line to my code, is that all is needed? RegardsScott

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Problem with Timer2

Application gets stuck when sending string in USB_CDC

Losing RTC ticks after wakeup timer

IO port always readuing 0v in release mode.

USB only working in debug mode

Re: Problem with Timer2

Re: Problem with Timer2

Re: Losing RTC ticks after wakeup timer

Re: IO port always readuing 0v in release mode.

Re: IO port always readuing 0v in release mode.