About MasterT

MasterT · 2023-11-08

ADC analog bandwidth tests:--board nucleo-G474re, on-board voltage reference.--sampling rate 2.8 msps, free-run mode, 12-bits, --156 kHz & 19.47 MHz. Approximately at 19 MHz ADC has ENOB < 6 bits, limiting factor seems to be aperture jitter about 12...

MasterT · 2019-12-15

CubeMx version 5.4.0., STM32Cube_FW_H7_V1.5.0ADC Oversampling Ratio EditBox doesn't allow to enter 1024, max value 1023. But it should, HAL_ driver makes subtraction -1, so 1024 is correct value.

MasterT · 2019-12-05

I discovered that Ethernet module on the nucleo-H743zi generates a lot of interference for analog domain. I thought, that if peripheral devise was not configured in the software and was not given explicit permition to run, it should stay in power do...

MasterT · 2019-12-03

Seems there is an error in the STLink firmware (upgraded to the latest version just now), clock is off about 1%.

MasterT · 2019-05-11

I have two nucleo-144 boards, stm32F767zi and stm32H743zi. Both cortex-M7, pin compatible, and pretty close in AHBx (GPIO) clock, 216 vs 200 MHz.Testing TFT LCD display library, that required fast 8-bits access to the LCD data bus, I discovered that ...

MasterT · 2024-06-24

Try to locate arduino library for ILI9488, study init procedure.To verify connection read back internal registers, ID, etc, and verify.

MasterT · 2024-06-22

Try:/**TIM2 GPIO Configuration*/GPIO_InitStruct.Pin = GPIO_PIN_5;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; <<<<---------GPIO_InitStruct.Alternate = GPIO_AF2_TIM2;HAL_...

MasterT · 2024-06-13

Just an idea using 2x SPI and Timer. I'd configure timer to external clock (master-SCLK) and 2 PWM output. Timer counts arriving train of 37 clock, than at 32-nd produces two anti-phase PWM for 2 SPI in slave mode. One SPI has CS from TIM and stops o...

MasterT · 2024-06-11

Probably, you can configure SPI to receive 3 words 11-bits each. DMA would store them as 16-bits half-word triplets. Later CPU can run through receive buffer to extract 3x 11-bits back from 3x uint16_t, and shifting |= & combine into single uint64_...

MasterT · 2024-06-07

Select Timer, configure two PWM channels - one for LED, and another to trigger adc start conversion. If done properly, you would have full control on phases for both PWM. If LED power regulation required than DAC may be triggered as well to outpu...

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stm32G474re adc performance

stm32CubeMX stm32h743 ADC oversampling settings

High noise level in the analog domain on nucleo-H743zi

ST-LINK provides 8.08 MHz instead of 8.000 on new nucleo-H743ZI2.

Why stm32H743zi has longer access time to GPIO interface?

Re: ILI9488 -TFT (without touch) not working on STM32H563ZIT6

Re: STM32G031 PWM output raising and falling time problem

Re: SPI for 33 bits frame size

Re: SPI for 33 bits frame size

Re: How to configure adc sampling snapshot and trigger other things during sampling?