About JMala.3

JMala.3 · 2024-07-11

I am working on a project that uses a PWM on a timer to drive a buzzer. When the buzzer stops I need to set the output compare signal high. The timer set ARR to 250, and the compare value to 125, giving a 4kHz square wave with a 50% duty cycle. I...

JMala.3 · 2023-12-06

I have 2 NUCLEO-WL55JC1 boards I am using to communicate using LoRa. The Tx board sends a message every 10 seconds, the Rx board receives the message and lights up an LED..I have this working at SF7, the same spreading factor as the ping-pong exampl...

JMala.3 · 2023-02-13

I am trying to use timer7 to give me the number of counts when an event occurs. I could not get this to work, and wrote some test code to show the issue.This test code should set the initial count to zero, then fill an array with 10 timer values as ...

JMala.3 · 2022-07-18

I am using Timer 1 DMA to generate a waveform. The generation part works fine, but the waveform is inverted, so I need to set channel 4 (output of CC4) signal high during initialization. I have tried a bunch of thing, my latest attempt is below. W...

JMala.3 · 2022-05-21

I am having a problem using Timer1 DMA to create a waveform used by one of our peripherals. I have set the timer to count up to 65K with a 1uS tick, and channel 4 as a comparator with a toggle output.I am generating the time between pulses in a tabl...

JMala.3 · 2024-07-12

Thanks I have it working. As TDK suggested, I force the OC pin high when I turn the buzzer off, and switch back to PWM mode when I turn the buzzer back on. The code is #define BUZZER_OFF TIM2->CR1 &= ~TIM_CR1_CEN; \ TIM2->CC...

JMala.3 · 2023-12-13

I found the issue.in the function Radio_SendMsg the lines// Workaround 5.1 in DS.SX1261-2.W.APP (before each packet transmission) SUBGRF_WriteRegister(0x0889, (SUBGRF_ReadRegister(0x0889) | 0x04));Are only applicable for bandwidths less then 500k...

JMala.3 · 2023-12-06

Thanks for the reply TeslaDelorean Here is the Tx code. Does this look OK?I am not using SUBGRF_SetTx. Can you recommend a value for the timeout?#include <stdio.h> #include <radio_driver.h> #include "types.h" #include "radio.h" #define RF_FREQUENC...

JMala.3 · 2023-06-12

Either close all projects you do not want to compile (right click on open project, and select close project, then the build and debug buttons will only work on the open projects,. Alternatively, right click on the project you want to compile and cli...

JMala.3 · 2023-06-12

I guess you know that the pre-scaler value is one less than the division, i.e. if you set the pre-scale to 15, the incoming clock will be divided by 16

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How Do I set a Timer output compare high or low?

Using Spreading factor 12 on NUCLEO-WL55JC1 LoRa boards

How do I use timer 7 on an STM32L433 to time an event?

Setting timer 1 channel 4 high on startup

STM32L433 Delay before Timer DMA starts

Re: How Do I set a Timer output compare high or low?

Re: Using Spreading factor 12 on NUCLEO-WL55JC1 LoRa boards

Re: Using Spreading factor 12 on NUCLEO-WL55JC1 LoRa boards

Re: With STM32CubeIDE, Version: 1.10.1 How can I make IDE compile and link only one project listed in project explorer.

Re: Why does Timer1 seem to have a slower clock?