About JLee.161

JLee.161 · 2020-07-19

Hi, I'm using STM32F373 for a biosignal measurement project, and I need some help writing firmware to automatically update the SDADC channel gain during execution.For example, I'm sampling at 100Hz, and after every 100 samples, i want to change the g...

JLee.161 · 2020-05-10

Hi all,I'm currently using STM32F051K8 for a smartwatch project I'm pursuing on a custom made PCB. For power consumption reasons, I wanted to change the MCU to STM32L051K8 which has the exact same UFQFPN-32 footprint.Now, my project works perfectly f...

JLee.161 · 2020-05-06

Hi all,I'm currently using a nucleo-L031 board for some testing and I came across a weird RTC phenomenon.My goal is to do some ADC and send the data through USART, set up an RTC alarm for 10 seconds later, and then fall into stop mode.I have set up t...

JLee.161 · 2020-05-04

Hi,I've developed a custom PCB for STM32F051K8 connected to an external crystal oscillator (8Mhz - nx3225gd from NDK). I think I have set everything correct on CubeMX and managed to get a working firmware going. I set up a 100Hz timer for ADC through...

JLee.161 · 2020-03-20

Updated Question:I have a custom PCB board with L052K8 and F051K8 with the same peripherals and correct hardware design for each (F051K8 has a VSSA for the ADC and different bypass cap), but only the L051K8 is able to program its firmware and reset c...

JLee.161 · 2020-05-14

Hi,I figured out my mistake.I was able to get by on the STM32F0 series without pulling the BOOT0 pin to GND.But it turns out that for STM32L0 series, BOOT0 pin must be pulled down for the application to run after reset.I hope this helps if anyone els...

JLee.161 · 2020-05-14

Hi Imen, thanks for the suggestion, but I don't think there was a problem there (as I was just building a fresh GPIO test application).. I think I found my solution on the BOOT0 pin of the UFQFPN32 package...In the STM32F051K8, I was able to get by w...

JLee.161 · 2020-05-07

Hi JW,thanks for pointing this out, this was directly stated in a lot of places in the reference manual, I just didn't look carefully. I think I'll just have to switch to an MCU with LSE instead ofHSE.One thing that still bothers me though, is that e...

JLee.161 · 2020-05-07

Hi, I checked the registers in debugging mode and found that RCC_CR HSE_ON was set, indicating that HSE is onRCC_CSR RTCSEL was set to 0x03, indicating that HSE w/ prescaler was set as the clock source for the RTCWhile looking this up, I found that H...

JLee.161 · 2020-05-06

I set up ALRMAR (for the sole reason that this is the only one that is available on F051K8 as well).I'm thinking it's not the alarm setup that's wrong, but that the RTC is not counting with HSE as the clock source - no matter the prescaler values or ...

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STM32F373 firmware to continually update SDADC gain in a loop

STM32L0 vs STM32F0 programming (can't get L051K8 to function after reset)

RTC doesn't work with HSE but works with LSE and LSI

How to set STM32F051K8 custom board HSE with RTC?

STM32L052K8 custom board does not run while the same board for STM32F051K8 works (same pinout and peripherals on the PCB)

Re: STM32L052K8 custom board does not run while the same board for STM32F051K8 works (same pinout and peripherals on the PCB)

Re: STM32L0 vs STM32F0 programming (can't get L051K8 to function after reset)

Re: RTC doesn't work with HSE but works with LSE and LSI

Re: RTC doesn't work with HSE but works with LSE and LSI

Re: RTC doesn't work with HSE but works with LSE and LSI