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Fix reading hexpansion headers #274

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Fix reading hexpansion headers #274

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3624750
Fix reading hexpansion headers
MatthewWilkes Aug 24, 2025
4ccfc36
Merge branch 'main' into fix-addr-len-in-hexpansion-header
ChrisDick Aug 29, 2025
99797e9
fix indentation error in python linter
ChrisDick Aug 29, 2025
9fa3be0
extra blank line
ChrisDick Aug 29, 2025
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4 changes: 2 additions & 2 deletions docs/hexpansions/writing-hexpansion-apps.md
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Original file line number Diff line number Diff line change
Expand Up @@ -126,14 +126,14 @@ Below is an example of how you find which port your hexpansion is plugged in to
for port in range(1, 7):
print(f"Searching for hexpansion on port: {port}")
i2c = I2C(port)
addr,addr_len = detect_eeprom_addr(i2c) # Firmware version 1.8 and upwards only!
addr, addr_len = detect_eeprom_addr(i2c) # Firmware version 1.8 and upwards only!

if addr is None:
continue
else:
print("Found EEPROM at addr " + hex(addr))

header = read_hexpansion_header(i2c, addr)
header = read_hexpansion_header(i2c, addr, addr_len=addr_len)
if header is None:
continue
else:
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13 changes: 7 additions & 6 deletions docs/tildagon-apps/backgrounds.md
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Expand Up @@ -46,11 +46,12 @@ from app_components.background import Background as bg
then call the update and draw functions from the same functions in your app:

```python
def draw(self, ctx):
bg.draw(ctx)
# add you code
def draw(self, ctx):
bg.draw(ctx)
# add you code

def update(self, delta):
bg.update(delta)
# add you code

def update(self, delta):
bg.update(delta)
# add you code
```
4 changes: 2 additions & 2 deletions docs/tildagon-apps/examples/detect-hexpansion.md
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Original file line number Diff line number Diff line change
Expand Up @@ -56,14 +56,14 @@ class ExampleApp(app.App):
for port in range(1, 7):
print(f"Searching for hexpansion on port: {port}")
i2c = I2C(port)
addr = detect_eeprom_addr(i2c)
addr, addr_len = detect_eeprom_addr(i2c)

if addr is None:
continue
else:
print("Found EEPROM at addr " + hex(addr))

header = read_hexpansion_header(i2c, addr)
header = read_hexpansion_header(i2c, addr, addr_len=addr_len)
if header is None:
continue
else:
Expand Down
4 changes: 2 additions & 2 deletions docs/tildagon-apps/reference/badge-hardware.md
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Original file line number Diff line number Diff line change
Expand Up @@ -698,14 +698,14 @@ bus = I2C(1)
for port in range(1, 7):
print(f"Searching for hexpansion on port: {port}")
i2c = I2C(port)
addr = detect_eeprom_addr(i2c)
addr, addr_len = detect_eeprom_addr(i2c)

if addr is None:
continue
else:
print("Found EEPROM at addr " + hex(addr))

header = read_hexpansion_header(i2c, addr)
header = read_hexpansion_header(i2c, addr, addr_len=addr_len)
if header is None:
continue
else:
Expand Down