Replace the 1ms delay for 2 nops to get a 100ns delay. #259

12 years ago · 38ee395ac7
parent 5df5e4c4a2
commit 38ee395ac7
1 changed files with 2 additions and 1 deletions
--- a/Marlin/temperature.cpp
+++ b/Marlin/temperature.cpp
@ -869,7 +869,8 @@ int read_max6675()
  WRITE(MAX6675_SS, 0);
  
  // ensure 100ns delay - a bit extra is fine
-  delay(1);
+  asm("nop");//50ns on 20Mhz, 62.5ns on 16Mhz
+  asm("nop");//50ns on 20Mhz, 62.5ns on 16Mhz
  
  // read MSB
  SPDR = 0;