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Update read_reg() to use repeated start #38

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merged 1 commit into from
Mar 28, 2024
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Update read_reg() to use repeated start #38

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9 changes: 3 additions & 6 deletions adafruit_mlx90393.py
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Original file line number Diff line number Diff line change
Expand Up @@ -406,15 +406,12 @@ def read_reg(self, reg: int) -> int:

:param int reg: The register to read
"""
# Write 'value' to the specified register
# Read register
payload = bytes([_CMD_RR, reg << 2])
with self.i2c_device as i2c:
i2c.write(payload)

# Read the response (+1 to account for the mandatory status byte!)
data = bytearray(3)
with self.i2c_device as i2c:
i2c.readinto(data)
i2c.write_then_readinto(payload, data)

# Unpack data (status byte, big-endian 16-bit register value)
self._status_last, val = struct.unpack(">BH", data)
if self._debug:
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