Invoking the Bootloader¶
APP3.0 Board¶
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Hardware
- Turn OFF and ON the board with T2 pressed, blue LED glows indicating that the board switched to bootloader mode.
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Software
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Write 0x4E494F43 ('N','I','O','C') to MAGIC_LOCATION (0x2003FFF4)
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Write 0x0 or 0xF0000 to APP_START_ADDR (0x2003FFF8)
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Call NVIC_SystemReset()
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Invoke Bootloader from Software
#define MAGIC_LOCATION (0x2003FFF4) #define APP_START_ADDR (*(uint32_t *)(MAGIC_LOCATION+4) *((uint32_t *)MAGIC_LOCATION) == 0x4E494F43; APP_START_ADDR = 0xF0000; //APP_START_ADDR = 0x0; NVIC_SystemReset();
- The same feature can also be used to perform application switch ( 2 or more applications can reside in the same flash memory at different address locations ). Just write the application start address to APP_START_ADDR instead of bootloader address.
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Nicla Sense ME Board¶
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Hardware
- Press three times reset button, blue LED glows indicating that the board switched to bootloader mode.
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Software
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Write 0x4E494F43 (’N’,’I’,’O’,’C’) to MAGIC_LOCATION (0x2000F804)
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Call NVIC_SystemReset()
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Invoke Bootloader from Software
#define MAGIC_LOCATION (0x2000F804) #define APP_START_ADDR (*(uint32_t *)(MAGIC_LOCATION+4) *((uint32_t *)MAGIC_LOCATION) == 0x544F4F42; NVIC_SystemReset();
- The same feature can also be used to perform application switch ( 2 or more applications can reside in the same flash memory at different address locations ).Just write the application start address to APP_START_ADDR instead of bootloader address.
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