Locking the bootloader with the MPU is a great idea, but I don’t think SAMD21 (used for the examples above that) has an MPU. The MPU is optional on cortex M0+ and based on the datasheet it looks like microchip didn’t include it.
Locking the bootloader with the MPU is a great idea, but I don’t think SAMD21 (used for the examples above that) has an MPU. The MPU is optional on cortex M0+ and based on the datasheet it looks like microchip didn’t include it.