modify cdiv calculate, satisfy comment

2025-02-02 15:30:36 +01:00 · 2022-03-26 12:38:14 +08:00 · 2022-03-26 12:38:14 +08:00 · 1139db6580
commit 1139db6580
parent e7f6c6b433
1 changed files with 1 additions and 1 deletions
--- a/spi.go
+++ b/spi.go
@ -65,7 +65,7 @@ func SpiSpeed(speed int) {
 	if isBCM2711() {
 		coreFreq = 550 * 1000000
 	}
-	cdiv := uint32((coreFreq + 2*speed) / speed)
+	cdiv := uint32((coreFreq + 2*speed - 1) / speed)
 	setSpiDiv(cdiv)
 }