anjiahao1 opened a new pull request, #9962:
URL: https://github.com/apache/nuttx/pull/9962
We can use the driver in nuttx to download
files with debugger
## Summary
open flash loader
## Impact
If the nuttx driver supports it, we can flash any firmware through
openflashloader
## Testing
stm32f429i-disco with internal flash
## CONFIG
```
CONFIG_DISABLE_IDLE_LOOP=y
CONFIG_SYSTEM_OFLOADER=y
CONFIG_SYSTEM_OFLOADER_TABLE="/dev/flash,0x08000000,0x20000"，0
```
## Usage
1. Compile elf firmware with ofloader and corresponding firmware driver.
2. Configure the corresponding jlink xml file，etc
`~/.config/SEGGER/JLinkDevices/vela/JLinkDevices.xml`
```
<Database>
<Device>
<ChipInfo Vendor="STM32NUTTX" Name="NuttX"
Core="JLINK_CORE_CORTEX_M4" WorkRAMAddr="0x20000000" WorkRAMSize="0x10000000" />
<FlashBankInfo Name="Storage" BaseAddr="0x00000000"
MaxSize="0xffffffff" Loader="/home/ajh/work/vela_all/nuttx/nuttx"
LoaderType="FLASH_ALGO_TYPE_OPEN" AlwaysPresent="1"/>
</Device>
</Database>
```
Loader is The compiled elf firmware.
3. use `JLinkExe -if SWD -speed 4000 -device STM32NUTTX` ,then `loadbin
/home/ajh/work/nuttx.bin 0x08000000` ,we can flash `nuttx.bin` to /dev/flash
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