Fix unsigned char overflow cause invalid filament load.

2019-07-30 19:06:57 +02:00 · 2019-07-30 19:06:57 +02:00 · 0aed59c947
parent da7ce65bb4
commit 0aed59c947
1 changed files with 1 additions and 1 deletions
--- a/Firmware/mmu.cpp
+++ b/Firmware/mmu.cpp
@ -978,7 +978,7 @@ void extr_adj(uint8_t extruder) //loading filament for SNMM
 {
 #ifndef SNMM
    MmuCmd cmd = MmuCmd::L0 + extruder;
-    if (cmd > MmuCmd::L4)
+    if (extruder > (MmuCmd::L4 - MmuCmd::L0))
    {
        printf_P(PSTR("Filament out of range %d \n"),extruder);
        return;