[ImuCal] Changes log-level for LoadAshCalibration fail message

- This change aims to reduce confusion with this log message since it
  is frequently not an error and arises when there is no previous cal
  data to load (e.g., on first device boot).
- This change was migrated from Google3 (284259994).

Bug: 145825423
Test: Built firmware.
Change-Id: I919a858f920b06eab657df40d4b7947953e42a0b

1 files changed, 3 insertions, 1 deletions

diff --git a/firmware/os/algos/calibration/nano_calibration/nano_calibration.cc b/firmware/os/algos/calibration/nano_calibration/nano_calibration.cc
index 0471b8d9..feabbd6a 100644
--- a/firmware/os/algos/calibration/nano_calibration/nano_calibration.cc
+++ b/firmware/os/algos/calibration/nano_calibration/nano_calibration.cc
@@ -334,7 +334,9 @@ bool NanoSensorCal::LoadAshCalibration(uint8_t chreSensorType,
       }
     }
   } else {
-    NANO_CAL_LOGE(sensor_tag, "ASH failed to recall calibration data.");
+    // This is not necessarily an error since there may not be any previously
+    // stored runtime calibration data to load yet (e.g., first device boot).
+    NANO_CAL_LOGW(sensor_tag, "ASH did not recall calibration data.");
   }
 
   return false;