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Update CP I2C Scan Example #1925

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Merged
merged 3 commits into from
Nov 17, 2021
Merged

Update CP I2C Scan Example #1925

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0b4ebde
add code for busio setup
caternuson Nov 17, 2021
0733c38
remove comment
caternuson Nov 17, 2021
ccef988
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caternuson Nov 17, 2021
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14 changes: 11 additions & 3 deletions CircuitPython_Essentials/CircuitPython_I2C_Scan/code.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
"""CircuitPython Essentials I2C Scan example"""
"""CircuitPython I2C Device Address Scan"""
# If you run this and it seems to hang, try manually unlocking
# your I2C bus from the REPL with
# >>> import board
Expand All @@ -7,15 +7,23 @@
import time
import board

# To use default I2C bus (most boards)
i2c = board.I2C()

# To create I2C bus on specific pins
# import busio
# i2c = busio.I2C(board.SCL1, board.SDA1) # QT Py RP2040 STEMMA connector
# i2c = busio.I2C(board.GP1, board.GP0) # Pi Pico RP2040

while not i2c.try_lock():
pass

try:
while True:
print("I2C addresses found:", [hex(device_address)
for device_address in i2c.scan()])
print(
"I2C addresses found:",
[hex(device_address) for device_address in i2c.scan()],
)
time.sleep(2)

finally: # unlock the i2c bus when ctrl-c'ing out of the loop
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11 changes: 10 additions & 1 deletion CircuitPython_Templates/i2c_scan/code.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,14 +2,23 @@
import time
import board

# To use default I2C bus (most boards)
i2c = board.I2C()

# To create I2C bus on specific pins
# import busio
# i2c = busio.I2C(board.SCL1, board.SDA1) # QT Py RP2040 STEMMA connector
# i2c = busio.I2C(board.GP1, board.GP0) # Pi Pico RP2040

while not i2c.try_lock():
pass

try:
while True:
print("I2C addresses found:", [hex(device_address) for device_address in i2c.scan()])
print(
"I2C addresses found:",
[hex(device_address) for device_address in i2c.scan()],
)
time.sleep(2)

finally: # unlock the i2c bus when ctrl-c'ing out of the loop
Expand Down