Function buffer_size 

pub const fn buffer_size<C: Color>(led_count: usize) -> usize

Calculate the required buffer size for a certain number of LEDs. This should be used to create the BUFFER_SIZE parameter of RmtSmartLeds.

Attempting to use more LEDs that the buffer is configured for will result in an AdapterError::BufferSizeExceeded error.

You need to specify the correct color and channel type