About Manu Abraham

Manu Abraham · 2021-02-07

Hi Folks,Greetings!At my end have a STM32G474 HRTIM output driving a MOSFET gate driver such as IR2110.In some weird cases encountered, when the MOSFET blows up, it takes away with it thegate driver as well.Not in all cases, but in some situations, I...

Manu Abraham · 2020-12-28

Hi,Greetings!I have a Bourns Rotary encoder https://www.bourns.com/docs/product-datasheets/pec11r.pdfconnected to PA11(ENCA)/TIM4_CH1 and PA12(ENCB)/TIM4_CH2.Trying to use the encoder as a input control for user input.This is what I am doing: static...

Manu Abraham · 2020-12-14

Hi Folks,Greetings !With a Nucleo-G474RE MB1367C, with an onboard 32.768kHz crystal:I am trying to turn ON the LSE oscillator, but the LSE oscillator does not get RDY at all.This is what I tried to do:void SystemClock_Config(void) { LL_FLASH_SetLate...

Manu Abraham · 2020-12-06

Hi,I am trying to write a waveform table to the DAC peripheral using DMA and the TIM6 peripheral.TIM6 does appear to work as expected.I can also see the DMA getting triggered by means of TIM6_TRGO.But the DMA Transfer results in a Transfer Error, res...

Manu Abraham · 2020-11-14

Hi,Greetings!Wondering whether the following logic works:Configure TIM7 for a sampling rate of 48khz. TIM7 triggers DMA to fetch audio samples at this rate, dumps it into the DAC buffer.Is this the right path ?If so, how to go about with the dual cha...

Manu Abraham · 2021-01-19

Finally, solved the problem!Just before doing a LSE enable, enabling backup access, with a forced backup domain reset/release did solve the problem.Just for completion sake ..Cheers,Manu

Manu Abraham · 2020-12-28

The quick hack, that I did was to set the counter to 1.Wonder, whether that's a good thing to do ..Thanks,Manu

Manu Abraham · 2020-12-28

Hi JW,I was getting pretty frustrated -- Connected a scope to ENC_A and _B, things looked very well indeed.Pulled a few hairs not knowing what to do.Checked CH1 , CH2 waveforms on PA11, 12.Well, as you said: one channel was dead .. The connector on C...

Manu Abraham · 2020-12-28

Hi JW,Thanks for the input. Which mode do you suggest ?I tried both SMS=b'0011' and b'1110' both appeared to have weird results:ie,static void encoder_init_r2(void) { LL_GPIO_InitTypeDef gpio; LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM4); ...

Manu Abraham · 2020-12-14

I can say for sure, however long I wait, LSE_RDY does not happen.Verified the same, with this:void SystemClock_Config(void) { LL_FLASH_SetLatency(LL_FLASH_LATENCY_4); LL_RCC_LSE_SetDriveCapability(LL_RCC_LSEDRIVE_MEDIUMHIGH); LL_mDelay(1000); L...

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Re: STM32G474 LSE oscillator not ready ?