ESP32C5 ULP compiled application zero padding

rvf_rob
Posts: 2
Joined: Tue Mar 25, 2025 7:47 pm

ESP32C5 ULP compiled application zero padding

Postby rvf_rob » Tue Apr 28, 2026 1:27 pm

Hi,
I'm working with the ESP32C5 ULP processor and ESP-IDF version 6.0. I'd like to figure out how much space in the reserved memory (CONFIG_ULP_COPROC_RESERVE_MEM) my ULP application is using. However, when I look at the resulting assembly it's always padded with zeros to the size defined by CONFIG_ULP_COPROC_RESERVE_MEM. Additionally, no ULP application map file is being generated.

Questions:
1 - How do I prevent the ULP application from being padded with zeros to CONFIG_ULP_COPROC_RESERVE_MEM?
2 - How do I generate a separate ULP application map file?

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