About Georgy Moshkin

Georgy Moshkin · 2023-03-13

Hello. I've noticed that DCMI/PSSI code does not provide this functionality, but it is very handy when using DMA in circular mode (ADC, frame buffer pumping to other interfaces, etc.). I've tested DCMI+DMA circular mode on F4 and PSSI+DMA circular mo...

Georgy Moshkin · 2022-09-01

According to datasheet, STM32H7B0VBT have 1024Kb of AXI SRAM, it is defined in STM32H7B0VBTX_FLASH.ld. But for some reason the same memory is limited to 128Kb in STM32H7B0VBTX_RAM.ld. I modify linker scripts according to my needs, but maybe I missing...

Georgy Moshkin · 2021-07-29

According to RM, "The I2C detects its own SCL low level after a tSYNC1 delay depending on the SCL falling edge", andi2sT=1/i2sclktSCL=tSYNC1+tSYNC2+((SCLH+1)+(SCLL+1))*(PRESC+1)*i2sTfSCL=1/tSCLI tried different PLL clock configurations and altered au...

Georgy Moshkin · 2021-07-27

I wanted to send looped signal pattern to I2C DAC at 1 MBit/s (around 100kHz sampling rate) and eventually found a solution. Original problem description: Because DAC is accepting 16bit frames I set NBYTES to 254 (254/2=127 DAC samples) and RELOAD bi...

Georgy Moshkin · 2021-01-27

According to AN5354:Page 13 / Table 12: Number of ADC = 2, resolution = 12, LQFP100, maximum ADC frequency is 35MHz (providing 70MHz from PLL2P before /2 divider)Page 15 / Table 16: Direct 4.38 MSPS Fast 3.83 MSPSAnd according to formula from RM: Tco...

Georgy Moshkin · 2024-10-17

Checking WRPState is useless, because this field is never set in HAL_FLASHEx_OBGetConfig() function: void HAL_FLASHEx_OBGetConfig(FLASH_OBProgramInitTypeDef *pOBInit) { pOBInit->OptionType = OPTIONBYTE_WRP | OPTIONBYTE_RDP | OPTIONBYTE_USER; /*G...

Georgy Moshkin · 2023-11-28

I recommend using pre-filled buffer in such cases. E.g., we can initialize buffer filled with 1 2 3 4 5... and output it back using UART to see what values are actually being overwritten. To set right length for I2S DMA transfers, we need to know sev...

Georgy Moshkin · 2023-10-30

Can be reproduced1) View device using USB Device Tree Viewer V3.7.8:2) bcdUSB field can be found in USBD_FS_DeviceDesc (usbd_desc.c):- When bcdUSB field is set to USB2.0 "0x00, 0x02" , there are two errors- When bdcUSB field is set to USB1.0 "0x00, 0...

Georgy Moshkin · 2023-09-30

Try my new multi-port uart dma library which works on f1,f4,h7 and can be easily modified through defines to support more series: https://github.com/georgy-moshkin/stm32uart Configure UART ports using stm32cubeide, enable global interrupts, dma, and ...

Georgy Moshkin · 2023-09-20

I hope this video tutorial will help: haven't tested it with L0 yet, but it surely works on F1 (3 ports), F4 and H7 (8 ports).

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DCMI and PSSI HAL DMA routines are not using half complete callbacks, but it is possible.

Reasoning behind default memory arrangement in STM32H7B0VBTX_RAM.ld linker script?

How to achieve exact SCL clock timings for I2C master in transmit mode?

Using STM32H7 I2C master transmit in DMA circular mode (I2C_CR2 NBYTES/RELOAD)

STM32H750 (rev.V) Needs higher ADC clock for dual interleaved mode when triggered from timer?

Re: How to enable/disable Flash Write Protection?

Re: The DMA length parameter defect of the HAL_I2S_Receive_DMA().

Re: Hi! I found strange USB desc in SDK.

Re: how to use UART with DMA

Re: Multiple UART implementation