About PA:99

PA:99 · 2021-11-16

I'm reading a temperature sensor (TC77) via SPI, with the following code (using the old StdPeriph lib):int16_t hdw_tc77_getTempRegister(void) { int16_t tempRegister; /*TC77 TEMP register*/ SPI_InitTypeDef SPI_InitStructure; /*SPI confi...

PA:99 · 2020-06-26

Hello,Objective:I have to update the firmware of an STM32F412 using the bootloader in system memory (through UART protocol).Situation:A command in my user code allows jumping to the bootloader after a system reset (so the device is in nominal state)....

PA:99 · 2021-11-16

Thank you a lot for your clear and amazingly fast answer!PA

PA:99 · 2020-06-29

Hello,Thank you for your explanation and for drawing my attention on the potential non-reloading of the flash option register on system reset (and the corresponding solution)!Thank you also for your two suggestions of code in in RAM to circumvent the...

PA:99 · 2020-06-29

Hello,Thank you for your answer! I think making my own bootloader (or at least part of it) as you propose will be the cleanest way to achieve what I need. And as you said, this will also allow the encryption of the distributed firmware, without witch...

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[Solved] [STM32F205] Occasional spurious SPI write in half-duplex polling mode

Once in the system bootloader, is there a way to update a readout protected firmware with only an UART access (and no BOOT0 access)?

Re: [Solved] [STM32F205] Occasional spurious SPI write in half-duplex polling mode

Re: Once in the system bootloader, is there a way to update a readout protected firmware with only an UART access (and no BOOT0 access)?

Re: Once in the system bootloader, is there a way to update a readout protected firmware with only an UART access (and no BOOT0 access)?