Custom PCB- unable to initialize fuel gauge and accelerometer
Hi all,
I had custom PCBs designed and fabricated using an ESP32-S3-WROOM-1 and various Adafruit components. However, I'm getting errors when trying to initialize the fuel gauge (MAX17048G+T10) and accelerometer (LSM6DS3TR):
"Gauge Init Failed: No I2C device at address: 0x36
IMU Init Hard Fail: Failed to find LSM6DS3 - check your wiring!"
I'm using CircuitPython 10.2.1. I will attach some schematic screenshots and my initialization code. I've tried adjusting the I2C frequency and using bitbangio with no luck. The RTC seems to be working fine. Can anyone tell me if this is a software issue, or if the hardware is defective?
Thanks!
import
gc
import
struct
import
array
import
microcontroller
import
board
import
displayio
import
time
import
math
import
random
import
terminalio
import
digitalio
import
pwmio
import
neopixel
import
touchio
import
busio
import
adafruit_st7789
from
adafruit_display_text
import
label
from
adafruit_lsm6ds.lsm6ds3
import
LSM6DS3
import
adafruit_ds3231
import
adafruit_max1704x
from
micropython
import
const
try
:
i2c
=
busio.I2C(I2C_SCL, I2C_SDA,
frequency
=
50000)
print("I2C bus initialized successfully.")
except
Exception
as
e:
print("I2C Bus Init Error:", e)
i2c
=
None
# Pre-define variables
battery_monitor
=
None
imu
=
None
ds3231
=
None
if
i2c:
# --- Battery Gauge ---
try
:
battery_monitor
=
adafruit_max1704x.MAX17048(i2c)
except
Exception
as
e:
print("Gauge Init Failed:", e)
# --- RTC ---
try
:
ds3231
=
adafruit_ds3231.DS3231(i2c)
except
Exception
as
e:
print("RTC Init Failed:", e)
# --- IMU (Strict Locked Access & Soft Reset) ---
try
:
while
not
i2c.try_lock():
pass
# Soft Reset
i2c.writeto(
0x
6A,
bytes
([
0x
12,
0x
01]))
time.sleep(0.2)
# Wake-up
i2c.writeto(
0x
6A,
bytes
([
0x
10,
0x
40]))
i2c.unlock()
time.sleep(0.1)
# Initialize
imu
=
LSM6DS3(i2c,
address
=
0x
6A)
print("IMU Initialized Successfully!")
except
Exception
as
e:
try
: i2c.unlock()
except
:
pass
print("IMU Init Hard Fail:", e)
imu
=
None
else
:
print("Skipping peripherals: I2C bus failed.")
u/public_void_kee — 11 days ago