dfu.c File Reference

Implementation file for iSensor-SPI-Buffer runtime firmware upgrade module. More...

#include <usb.h>
#include "dfu.h"
#include "stm32f303xe.h"

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Functions
static void	ExecuteDFUBoot ()
	Executes a DFU reboot. More...
void	DFU_Check_Flags ()
	Checks if a reboot into the DFU bootloader is needed. More...
void	DFU_Prepare_Reboot ()
	Set DFU reboot flag in RAM and reset system. More...

Variables
void(*	SysMemBootJump )(void)

Detailed Description

Implementation file for iSensor-SPI-Buffer runtime firmware upgrade module.

Copyright (c) Analog Devices Inc, 2020 All Rights Reserved.

Date

10/9/2020

Author

A. Nolan (alex..nosp@m.nola.nosp@m.n@ana.nosp@m.log..nosp@m.com)

Function Documentation

DFU_Check_Flags()

void DFU_Check_Flags

(

)

Checks if a reboot into the DFU bootloader is needed.

Returns

void

This function should be the first called in the main routine. The less which is configured before entering DFU mode, the easier. This function checks for a DFU reboot flag set in a "no-initialize" section of SRAM to determine if booting into DFU mode is needed. This flag must be set by the application code on the prior run, when a bootloader reboot command is received.

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DFU_Prepare_Reboot()

void DFU_Prepare_Reboot

(

)

Set DFU reboot flag in RAM and reset system.

Returns

void

Resetting the system ensures the processor core is in a good state to load the bootloader on the next initialization. To run the bootloader, it is important that no interrupts are enabled, stack is cleared, processor is running from internal clock, and no hardware peripherals are active.

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ExecuteDFUBoot()

static void ExecuteDFUBoot ( )

static

Executes a DFU reboot.

Returns

void

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