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DaMCU · 2022-02-23

Hello,I would like to know how to prevent the execution of the on chip bootloader after a RDP regression from level 1 to level 0. After the necessary option byte load (OBL) a mass erase is done and the chip is reset and after the reset the bootloader...

DaMCU · 2021-09-29

Hello,I'm using a STM32G0B1CC and I'm trying to remap address 0x00000000 to SRAM like this: __HAL_RCC_SYSCFG_CLK_ENABLE(); __HAL_SYSCFG_REMAPMEMORY_SRAM();Unfortunately this does not work and 0x00000000 is still mapped to FLASH.If I try to remap t...

DaMCU · 2022-03-04

I discovered a little trick to circumvent the problem: I just program the bits nBOOT0, nBOOT1 and nBoot_SEL bits to select boot from SRAM before doing the RDP regression. This bypasses the empty check and prevents bootloader execution successfully. A...

DaMCU · 2022-02-23

Well, the flash will be programmed after finishing the init steps anyway, but between two of those init steps (see my other post: between OBL and reset and hold) the bootloader is active. That is what I'm trying to prevent. The bootloader is not runn...

DaMCU · 2022-02-23

> How do you do that?I'm using SEGGER J-Flash utility together with Flasher ATE programmer. With this you can define init and exit steps for programming the target. Im doing the regression in the init steps:Unlock FLASH_CR::LOCKUnlock FLASH_CR::OPTLO...

DaMCU · 2022-02-23

Well STM32G0B0 doesn't have the FLASH_SECR register, so no BOOT_LOCK available. That was the first thing I checked... ;)

DaMCU · 2021-09-30

Seems to be a problem of the SEGGER J-Link debugger because when using a KEIL ULINKpro debugger the memory view is populated correctly :grinning_face_with_sweat:Well, there are always problems like that with relatively "new" chips, e.g. the current S...

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STM32G0B0: Prevent bootloader execution after RDP regression from level 1 to 0 and OBL causing mass erase and system reset

STM32G0: Remapping address 0x00000000 to SRAM does not work

Re: STM32G0B0: Prevent bootloader execution after RDP regression from level 1 to 0 and OBL causing mass erase and system reset

Re: STM32G0B0: Prevent bootloader execution after RDP regression from level 1 to 0 and OBL causing mass erase and system reset

Re: STM32G0B0: Prevent bootloader execution after RDP regression from level 1 to 0 and OBL causing mass erase and system reset

Re: STM32G0B0: Prevent bootloader execution after RDP regression from level 1 to 0 and OBL causing mass erase and system reset

Re: STM32G0: Remapping address 0x00000000 to SRAM does not work