About Xenon02

Xenon02 · 2024-11-09

Hello I am using : STM32L031G6U6.I am confused how programming the MCU works. I don't have let's say SWDIO and SWCLK pins declared in CubeIDE. Then how it works ? Why it works this way ? I read something that when I use NRST pin to reset manually the...

Xenon02 · 2024-11-02

I have some questions. I read that STOP mode has a "RAM retention", so when it wakes up it the whole data is still intact (not cleared).When the RAM retention is off then the data is gone when it goes to STOP mode. So when it Wakes up does it restart...

Xenon02 · 2024-07-22

Hello ! I've been working on with LIS3MDL a magnetometer from STM, but there was one problem because reading X,Y,Z it was showing good values but sometimes instead of value it just spitted 0, for example X = 0.14, Y = 0.30, Z = 0.14 and sometimes it ...

Xenon02 · 2024-01-06

Hello ! I've been wondering, how UART works in receiving side ? I have like maybe 4/5 questions ? -> What if I have a RX buffer that is full ? The flag is on and I didn't read the data. Then the new data comes after sometime, will it overwrite my dat...

Xenon02 · 2024-01-06

Hello ! My STM board is STM32-L073RZ. I've had a lot of problem with HC-06, tried to somehow send the command "AT" or "AT\r\n", but I didn't get anything back. The bluetooth wasn't connected to any device because the diode was blinking. - I tried cha...

Xenon02 · 2024-11-10

"You still mixup ... SWD is reset independent = work in reset always and out of reset in some conditions up writed." Where it is written that SWD works also in RESET state ? What MCU does in reset state what he can do ? Because I thought that MCU doe...

Xenon02 · 2024-11-10

Hello :> Most of what I asked has been answered, but I do have 5 more questions. When the MCU is restarted it does its booting code (turning on clocks, PLL, RAM etc.), after booting the MCU starts the user code which is the code the user uploaded int...

Xenon02 · 2024-11-09

Well it is not the question what is JTAG or what is SWD but rather if I change the SWD into normal GPIO then how after the reset it is again SWD ? Okey maybe my bad I'll ask it this way : - What happens after the RESET ? Which is UNRESET state, what ...

Xenon02 · 2024-11-02

Also look what I've found :It says about Flash memory and RAM being stopped. So if RAM is turned off then all the data in RAM is cleared in SLEEP mode ? How it works when it wakes up ? It should start from where it Sleep mode was turned on, but RAM i...

Xenon02 · 2024-11-02

Then why in the website it was said that RAM retention can be turned off ? And if some STOP mode can disable RAM then what happens if EXTI want's to do the callback and there is a variable that was cleared and uninitialized ? Lastly does HAL_PWR_Ente...

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How SWD works when it is not assigned in CubeIDE ?

STM32L0 STOP and STANDBY mode.

HAL issue with int8_t instead of uint8_t

UART how the overflow works ?

UART doesn't receive data from HC-06

Re: How SWD works when it is not assigned in CubeIDE ?

Re: How SWD works when it is not assigned in CubeIDE ?

Re: How SWD works when it is not assigned in CubeIDE ?

Re: STOP and STANDBY mode.

Re: STOP and STANDBY mode.