From e7f6c6b4332fdb474b6f00ad9ebeb09b386cc18d Mon Sep 17 00:00:00 2001
From: zxfishhack <zxfishhack@126.com>
Date: Sat, 26 Mar 2022 12:32:04 +0800
Subject: [PATCH] modify cdiv calculate, satisfy comment

---
 spi.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spi.go b/spi.go
index 7a5954e..e2cd64a 100644
--- a/spi.go
+++ b/spi.go
@@ -65,7 +65,7 @@ func SpiSpeed(speed int) {
 	if isBCM2711() {
 		coreFreq = 550 * 1000000
 	}
-	cdiv := uint32(coreFreq / speed)
+	cdiv := uint32((coreFreq + 2*speed) / speed)
 	setSpiDiv(cdiv)
 }