Mass erase with bootloader on STM32L162

nicolas · ‎2013-06-06

Posted on June 06, 2013 at 17:10

I have a problem doing mass erase of a STM32L162 when using the bootloader.

When i use the ''Flash Loader Demonstrator'', it give me the error ''FAIL: Unable to erase flash''.

The bootloader version is 3.1.

The pages erase work correctly.

Anyone know where this problem coming from ?

#stm32l162-mass-erase-bootloader

Amel NASRI · ‎2013-06-17

Posted on June 17, 2013 at 12:21

Hello Nicolas,

The mass erase isn't available for STM32L1xx devices and this is confirmed in the AN2606 in the section 7.4 (Important considerations):

Mass erase command is not supported by STM32L15xxx medium-density device

bootloader firmware. To perform a mass erase operation, two options are available:

– Erase all sectors one by one using the Erase command

– Set protection level to Level 1. Then, set it to Level 0 (using the Read protect

command and then the Read Unprotect command). This operation results in a

mass erase of the internal Flash memory (refer to Programming Manual PM0062

for more details).

You can get this AN from this

http://www.st.com/st-web-ui/static/active/en/resource/technical/document/application_note/CD00167594.pdf

.

ST.MCU

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nicolas · ‎2013-06-18

Posted on June 18, 2013 at 14:41

Thank you for the answer.