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-rw-r--r--config/example-extras.cfg17
1 files changed, 17 insertions, 0 deletions
diff --git a/config/example-extras.cfg b/config/example-extras.cfg
index ac251512..c10d2732 100644
--- a/config/example-extras.cfg
+++ b/config/example-extras.cfg
@@ -605,6 +605,23 @@
# to not scale the 'wiper_x' parameters.
+# Configure an SX1509 I2C to GPIO expander. Due to the delay incurred
+# by I2C communication you should NOT use SX1509 pins as stepper enable,
+# step or dir pins or any other pin that requires fast bit-banging. They
+# are best used as static or gcode controlled digital outputs or hardware-pwm
+# pins for e.g. fans. One may define any number of sections with an "sx1509"
+# prefix. Each expander provides a set of 16 pins (sx1509_my_sx1509:PIN_0 to
+# sx1509_my_sx1509:PIN_15) which can be used in the printer configuration.
+#[sx1509 my_sx1509]
+#address:
+# I2C address used by this expander. Depending on the hardware jumpers
+# this is one out of the following addresses: 0x3E 0x3F 0x70 0x71. This
+# parameter must be provided
+#bus: 0
+# If the I2C implementation of your microcontroller supports multiple I2C
+# busses, you may specify the bus number here. The default is 0.
+
+
# Configure a TMC2130 stepper motor driver via SPI bus. To use this
# feature, define a config section with a "tmc2130" prefix followed by
# the name of the corresponding stepper config section (for example,