About Ravi1

Ravi1 · 2020-08-18

I'm trying to program stm32h750vb to run ws2812b RGB LED. My RGB LED is connected to TIM1CH2N. I'm unable to generate desired PWM signal with my DMA settings. I have tested PWM signal without DMA it is working fine. So, as per my knowledge my timer ...

Ravi1 · 2020-08-17

I've been trying to use TIM1CH2N to generate PWM to control ws2812b RGB LED. I have got one working library for TIM1CH2, but I'm unable to generate the same signals in the CH2N pin (STM32H750VB). Can anyone help me out to resolve this issue?

Ravi1 · 2020-08-18

/* Enable the DMA stream */ if (HAL_DMA_Start_IT(htim->hdma[TIM_DMA_ID_CC2], (uint32_t)pData, (uint32_t)&htim->Instance->CCR2, Length) != HAL_OK) { return HAL_ERROR; } :::: This is where I have encountered an Error

Ravi1 · 2020-08-18

Issue was with my function, earlier I used HAL_TIM_PWM_Start(); function to start pwm, the actual one i should use is HAL_TIMEx_PWMN_Start(); to generate pwm signal on complementary configuration.

Ravi1 · 2020-08-18

Still I'm not able to generate any signal. That solution did not helped me. HAL_TIMEx_PWMN_Start_DMA(&htim1, TIM_CHANNEL_2, (uint32_t *) LEDbuffer, LED_BUFFER_SIZE);This is the function I call to generate PWM signal.

Ravi1 · 2020-08-18

I tap the output pin and observe signal using Logic Analyzer.

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Unable to generate complementary pwm signal with DMA.

How to use timers complementary output is for regular peripherals programming?

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Re: How to use timers complementary output is for regular peripherals programming?

Re: Unable to generate complementary pwm signal with DMA.

Re: Unable to generate complementary pwm signal with DMA.