Fix comment about pull-up and pull-down

cnlohr · Sep 27, 2024 · f124043 · f124043
1 parent 1baeca0
commit f124043
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/examples/gpio_and_adc/gpio_and_adc.c b/examples/gpio_and_adc/gpio_and_adc.c
@@ -20,9 +20,11 @@
 //   * If 5V is applied to 5v-tolearnt pin (PC1, 2, 5, 6, 5V tolerant pins) no current flows.
 //   * If 5V is applied to other pins, pin sinks 20mA from 5V
 //  PU/PD
-//   * If 5V is applied, pin sinks 20mA.
+//   * Pull-up and Pull-down.
 //   * Output 1: pin sources 76uA from GND.
 //   * Output 0: pin sinks 76uA from 3.3v.
+//   * I.e. If you want to have a pull-up, configure PUPD, then set output to 1.
+//   * If 5V is applied, pin sinks 20mA.
 //   * If within 0...3.3V, pretend it has 45k Ohms.
 
 #include "ch32v003fun.h"