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Question

Timeout values in STM32G4 bootloader ?

Forum|Forum|5 years ago
September 16, 2020
2 replies
948 views

Hi all,

Bootloader selection for STM32G47xxxx described in AN2606 shows the different steps followed by the bootloader.

Where can I find the delays available between steps ?

For example, how long the booloader waits to receive the 0x7F value on USARTx ?

BR

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ST Employee

Hello,

In section 66 “Bootloader timings�?, there are many tables giving an overall idea of the detection times for interfaces.

Best Regards,

YJ_itAuthor

Associate

Actually I am looking for the delay the bootloader is waiting to receive 0x7F on USARTx before checking if an I2C address is detected.

It means the duration between "Configure SPIx" and "I2C address detected".

If I understood right, for STM32G4 there is 0.390 ms between "System Reset" and waiting for 0x7F.