About M7890.1

M7890.1 · 2021-10-07

Hi. I want to use HMC5833L for my project but I couldn't find any library to be used as a reference. Can someone briefly explain what are the steps needed to read data from the sensor? I have a little piece of code below but it doesn't work.HAL_I2C_M...

M7890.1 · 2021-09-13

Hi, I am using the code below to spin my brushless DC motor. When I used another code where I have a potentiometer to vary the motor speed, the motor spins without problem so I don't think the DC motor and ESC are faulty. Is there something wrong wit...

M7890.1 · 2021-09-11

I am using the Bluepill board. I want to generate PWM signal on Timer2 and set up a timer interrupt at 20ms interval on Timer3. I realized that the PWM signal cannot be generated if I set up the timer interrupt on Timer3. How do I solve this problem?

M7890.1 · 2021-08-25

As shown in the picture, there are question marks at the file icon. Why is that so? The build icon greyed out as well.

M7890.1 · 2021-08-21

Hi. I am trying to trigger and external interrupt using a push button (rising edge trigger and use internal pull down). When the push button is pushed, the variable cnt should be incremented and the pulse width of the PWM shall be changed according;...

M7890.1 · 2021-09-12

The problem happens due to the CCR1 and CCR2 being updated. I did something similar in another code but don't encounter this problem. Why is that so?

M7890.1 · 2021-09-11

Yes. I am doing something when timer interrupt fired.void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef* htim) { float error; static float past_error; float roll_pid_p; static float roll_pid_i = 0; float roll_pid_d; float roll_pid; uint16_...

M7890.1 · 2021-09-11

The PWM output is not affected if I start timer3 without interrupt.

M7890.1 · 2021-09-11

Yes. They should be independent. So I was having these 3 lines before my while loop:HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_1); // start PWM signal HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_2); HAL_TIM_Base_Start_IT(&htim3);I have set my PWM pulse width ...

M7890.1 · 2021-08-16

I forgot to mention that I used the Blue Pill board which is having a STM32F103CBT6 on board. This MCU doesn't have HAL_UARTEx_ReceiveToIdle right? In that case, any suggestion on how to receive data from UART if the number of bytes is not known?

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Push button: is there a need for software debouncing?

Re: How to generate PWM and use timer interrupt at the same time?

Re: How to generate PWM and use timer interrupt at the same time?

Re: How to generate PWM and use timer interrupt at the same time?

Re: How to generate PWM and use timer interrupt at the same time?

Re: How to read data correctly from NEO-6M GPS module?