Tweak to rotary, for consistency

examples/plasma_2040/plasma2040_rotary.cmake

@@ -1,6 +1,7 @@
-add_executable(plasma2040_rotary plasma2040_rotary.cpp)
+set(OUTPUT_NAME plasma2040_rotary)
+add_executable(${OUTPUT_NAME} plasma2040_rotary.cpp)
 
-target_link_libraries(plasma2040_rotary
+target_link_libraries(${OUTPUT_NAME}
         pico_stdlib
         plasma2040
         breakout_encoder
@@ -9,4 +10,4 @@ target_link_libraries(plasma2040_rotary
         button
         )
 
-pico_add_extra_outputs(plasma2040_rotary)
+pico_add_extra_outputs(${OUTPUT_NAME})

examples/plasma_2040/plasma2040_rotary.cpp

@@ -16,6 +16,9 @@ using namespace pimoroni;
 // Set how many LEDs you have
 const uint N_LEDS = 30;
 
+// How many times the LEDs will be updated per second
+const uint UPDATES = 60;
+
 // Pick *one* LED type by uncommenting the relevant line below:
 
 // APA102-style LEDs with Data/Clock lines. AKA DotStar
@@ -67,7 +70,7 @@ void gauge(uint v, uint vmax = 100) {
 int main() {
     stdio_init_all();
 
-    led_strip.start(60);
+    led_strip.start(UPDATES);
 
     bool encoder_detected = enc.init();
     enc.clear_interrupt_flag();
@@ -147,6 +150,6 @@ int main() {
 
         // Sleep time controls the rate at which the LED buffer is updated
         // but *not* the actual framerate at which the buffer is sent to the LEDs
-        sleep_ms(1000 / 60);
+        sleep_ms(1000 / UPDATES);
     }
 }