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zhaowhong · 2024-10-10

Hi Because power-off protection is required, the times or variables need to be stored in flash。Is my solution reasonable?Create a space inside the flash to define variables, and read the data after powering on the computer. Then there is a problem wi...

zhaowhong · 2024-09-29

hiTo append a CRC32 calculation result, which is computed by the hardware CRC ,I want make the crc result at the end of the bin file , for the purpose of verification during program upgrade.please Give a method，It is best to directly generate the bi...

zhaowhong · 2024-09-13

HiMy project is using an alientek 4.3 inch TFTLCD screen, which is driven by FMC (Flexible Memory Controller).And ，The display effect of the button control does not meet my expectations after I load it.“next text”is my button,that there are many hor...

zhaowhong · 2024-10-11

This chip is sp3845

zhaowhong · 2024-10-11

HiSTM32F407 .You said this method is very feasible.How can we let the CPU know when the power is off? How can this be achieved?Your method detects a power outage and directly enters the interrupt and writes to flash.

zhaowhong · 2024-10-11

I just wrote this program a few days ago. You should use DMA to receive data.Regularly query data and receive data for splicing。And my bin file transfer added crc check

zhaowhong · 2024-10-11

There is something wrong with your system architecture. The real product does not do this. You should add a 485 chip connected to the UATR of the CPU.

zhaowhong · 2024-10-11

Yes An external EEPROM would be a better solution.

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Want to detect the number of times a switch value is used through stm32

To add a CRC32 result to the end of a bin file,

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Re: RS485 non standard data word

Re: Want to detect the number of times a switch value is used through stm32

Re: UART Rx Interrupt Routine for Variable-Length Data on STM32F072RBT6

Re: RS485 non standard data word

Re: Want to detect the number of times a switch value is used through stm32