Interesting thing here.
You have a delay function that takes an unsigned int parameter.
You loop this unsigned int parameter using using variable "n" - an unsigned char variable.
And you loop "count" steps using an unsigned int variable "i"

Another thing to google a bit about. What are the view about using lower-case letters for a #define count 1700

You are not agreeing with the common recommendations to use capital letters in #define'd symbols, to make it instantly visible in the code that the symbol will be text/replaced during the compilation potentially resulting in code with non-obvious behaviour.

How long have you not noticed this?