fdcavalcanti opened a new pull request, #18769:
URL: https://github.com/apache/nuttx/pull/18769
## Summary
<!-- This field should contain a summary of the changes. It will be
pre-filled with the commit's message and descriptions. Adjust it accordingly -->
* arch/xtensa: remove _info from startup of ESP32
During startup we should avoid using _info since the system is not
fully initialized. Default to use ets_printf which is safe for
this scenario.
This PR fixes an issue where `_info` gets stuck trying to print to serial.
At this point, we should be using the `ets_printf` function instead, which is
at ROM level.
## Impact
<!-- Please fill the following sections with YES/NO and provide a brief
explanation -->
Impact on user: Fixes issue where `espnow` defconfig failed to boot properly.
<!-- Does it impact user's applications? How? -->
Impact on build: No.
<!-- Does it impact on building NuttX? How? (please describe the required
changes on the build system) -->
Impact on hardware: ESP32 only.
<!-- Does it impact a specific hardware supported by NuttX? -->
Impact on documentation: No.
<!-- Does it impact the existing documentation? Please provide additional
documentation to reflect that -->
Impact on security: No.
<!-- Does it impact NuttX's security? -->
Impact on compatibility: No.
<!-- Does it impact compatibility between previous and current versions? Is
this a breaking change? -->
## Testing
<!-- Please provide all the testing procedure. Consider that upstream
reviewers should be able to reproduce the same testing performed internally -->
- `./tools/configure.sh esp32-devkitc:espnow`
- Enabled DEBUG_ASSERTIONS and other debug features
- Make and flash
### Results
- Before the change:
Device would get stuck during startup while `_info` was called for the efuse
revision info.
```
esp32 defconfig would fail to boot (could be seen with espnow + debug
features enabled).
Log:
*** Booting NuttX ***
I (65) boot: chip revision: v3.1
I (65) boot.esp32: SPI Speed : 40MHz
I (65) boot.esp32: SPI Mode : DIO
I (67) boot.esp32: SPI Flash Size : 4MB
I (70) boot: Enabling RNG early entropy source...
dram: lma 0x00001020 vma 0x3ffbaa70 len 0x43e0 (17376)
iram: lma 0x00005408 vma 0x40080000 len 0x18070 (98416)
padd: lma 0x0001d488 vma 0x00000000 len 0x2b90 (11152)
imap: lma 0x00020020 vma 0x400d0020 len 0x8178c (530316)
padd: lma 0x000a17b4 vma 0x00000000 len 0xe864 (59492)
dmap: lma 0x000b0020 vma 0x3f400020 len 0x1a26c (107116)
total segments stored 6
AB
```
- After the change:
Device boots properly.
```
...
ABESP32 chip revision is v3.0
I (120) cpu_start: Pro cpu start user code
I (120) cpu_start: cpu freq: 240000000 Hz
I (144) wifi_init: rx ba win: 6
I (144) wifi_init: LWIP disabled
I (149) phy_init: phy_version 4863,a3a4459,Oct 28 2025,14:30:06
telnetd [6:100]
NuttShell (NSH) NuttX-10.4.0
nsh>
```
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