rom_reset_usb_boot() function

Reboot the device into BOOTSEL mode This function reboots the device into the BOOTSEL mode ('usb boot"). Facilities are provided to enable an "activity light" via GPIO attached LED for the USB Mass Storage Device, and to limit the USB interfaces exposed.

Syntax

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Summary

Declaration

Definition

from bootrom.h:259

void __attribute__((noreturn)) rom_reset_usb_boot(uint32_t usb_activity_gpio_pin_mask, uint32_t disable_interface_mask);

Implemented in bootrom.c:43

Arguments

Argument

Declared as

Description

usb_activity_gpio_pin_mask

uint32_t

0 No pins are used as per a cold boot. Otherwise a single bit set indicating which GPIO pin should be set to output and raised whenever there is mass storage activity from the host.

disable_interface_mask

uint32_t

value to control exposed interfaces - 0 To enable both interfaces (as per a cold boot) - 1 To disable the USB Mass Storage Interface - 2 To disable the USB PICOBOOT Interface

Examples

References

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rom_reset_usb_boot() function

Syntax

Arguments

Examples

References

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