From 6ded0e1c8dc9596e86512d269ace36c5bc5a7a5e Mon Sep 17 00:00:00 2001
From: BlackMark <me@blackmark.me>
Date: Sun, 28 Jul 2019 19:20:03 +0200
Subject: [PATCH] Fixed rounding error in baud rate calculation

---
 hardware0.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hardware0.hpp b/hardware0.hpp
index 5a054b5..5c5c606 100644
--- a/hardware0.hpp
+++ b/hardware0.hpp
@@ -55,7 +55,9 @@ struct HardwareAbstraction<SupportedHardware::ATmega1284P> {
 	template <uint32_t baudRate>
 	static constexpr auto calcBaud()
 	{
-		return static_cast<uint16_t>((F_CPU / (16 * baudRate)) - 1);
+		// The actual formula is (F_CPU / (16 * baudRate)) - 1, but this one has the advantage of rounding correctly
+		constexpr auto baudVal = (F_CPU + 8 * baudRate) / (16 * baudRate) - 1;
+		return baudVal;
 	}
 
 	struct DataBitsVal {