About W.K. Tam

W.K. Tam · 2023-10-09

We developed our software in our STM32WLE5 board for LoRaWAN applications. It is working well to connect the TTN with OTAA in the NUCLEO-WL55JC1. When we migrated the software to our board with modification of the RF switch control GPIO pins, the sof...

W.K. Tam · 2023-10-04

I developed a software to collect LC sensor measurement and upload the data to TTN via LoRaWAN. The software is working well in NUCLEO-WL55JC1 but failed to run on my own board with STM32WLE5 MCU. My program is written for single core only so it shou...

W.K. Tam · 2023-08-06

I want to record the time of sensor activity in a program running in STM32WL MCU but only get the value of 0. The program is modified from the example LoRaWAN_End_Node. Below please find the RTC setting and the code to get the date and time. Can any ...

W.K. Tam · 2023-07-18

My project need to synchronize the clock of our STM32WL device with TTN server. How can I use the function in LmhpClockSync.c to do the job ? I would be grateful if any expert can guide me to get it done.

W.K. Tam · 2023-07-13

I modified the LoRaWAN_End_Node sample program for measuring the external pulses input to the COMP1. I register a task in the sequencer and set up the timer in timer server. It is no problem to run a test task by just toggle the LED. When I initializ...

W.K. Tam · 2023-10-09

I finally got the program runing in our board after modifying some control GPIOs which are difference between our board and tthe NUCLEO-WL55JC. It can read the LC sensors and try to connect the TTN. Unfortunately, it is failed to connect the TTN and ...

W.K. Tam · 2023-08-07

Hi Imen,Thanks for your help. I found that the sample program LoRaWAN_End_Node does not call "MX_RTC_Init()". How does it configure and use the RTC ? I tried to add the "MX_RTC_Init()" in the user code section with your suggested line below put befor...

W.K. Tam · 2023-07-18

Hi @IIRHO.1 ,Thanks for your help. I solved the problem by using STM32cubeMX to initialize the lptim. My problem may be caused by COMP1 which is not connected to the DAC input properly. Anyway, using STM32cubeMX to do the setting, it works well.Thank...

W.K. Tam · 2023-06-27

Hi,Finally, I tested and confirmed that the problem was caused by the clock frequency lower than the signal to be counted. I changed the clock from LSE to HSE. It is working now.W.K. Tam

W.K. Tam · 2023-06-27

Hi @Imen.D Thanks for your reply. I did try to follow recommendation stated in the github but failed. I keep commenting the section of code as stated in my previous message for continuing our development works. Anyway, it may have unexpected issues f...

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What is the cause to switch from OTAA to ABP automatically in the LoRaWAN software in STM32WLE5 ?

Program works in NUCLEO-WL55JC1 but failed in my own board with STM32WLE5

Failed to read time and date in STMWLE5 software

STM32WL clock sychrnonisation with LoRaWAN server

What is the cause of LPTIM_WaitForFlag function resulted HAL_TIMEOUT in STM32WL MCU ?

Re: Program works in NUCLEO-WL55JC1 but failed in my own board with STM32WLE5

Re: Failed to read time and date in STMWLE5 software

Re: What is the cause of LPTIM_WaitForFlag function resulted HAL_TIMEOUT in STM32WL MCU ?

Re: HAL_LPTIM_Counter_Start(&hlptim1, 0xFFFF) returns HAL_TIMEOUT in LPTIM_WaitForFlag(hlptim, LPTIM

Re: HAL_LPTIM_Counter_Start(&hlptim1, 0xFFFF) returns HAL_TIMEOUT in LPTIM_WaitForFlag(hlptim, LPTIM