From a6dfd9257c33e73f1320e405ace288f56e9bfb22 Mon Sep 17 00:00:00 2001
From: Mitch Bradley <wmb@firmworks.com>
Date: Wed, 23 Jun 2021 19:42:39 -1000
Subject: [PATCH] Create default speed map for Laser and Null spindles

---
 Grbl_Esp32/src/Spindles/Laser.cpp       | 7 ++++++-
 Grbl_Esp32/src/Spindles/NullSpindle.cpp | 3 +++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/Grbl_Esp32/src/Spindles/Laser.cpp b/Grbl_Esp32/src/Spindles/Laser.cpp
index b56a36af..ea7ea629 100644
--- a/Grbl_Esp32/src/Spindles/Laser.cpp
+++ b/Grbl_Esp32/src/Spindles/Laser.cpp
@@ -50,7 +50,12 @@ namespace Spindles {
         _pwm_precision = calc_pwm_precision(_pwm_freq);  // determine the best precision
         _pwm_period    = (1 << _pwm_precision);
 
-        // pre-calculate some PWM count values
+        if (_speeds.size() == 0) {
+            // The default speed map for a Laser is linear from 0=0% to 255=100%
+            _speeds.push_back({ 0, 0 });
+            _speeds.push_back({ 255, 100 });
+        }
+
         setupSpeeds(_laser_full_power);
         _pwm_chan_num = 0;  // Channel 0 is reserved for spindle use
     }
diff --git a/Grbl_Esp32/src/Spindles/NullSpindle.cpp b/Grbl_Esp32/src/Spindles/NullSpindle.cpp
index d2a8512d..73f6d208 100644
--- a/Grbl_Esp32/src/Spindles/NullSpindle.cpp
+++ b/Grbl_Esp32/src/Spindles/NullSpindle.cpp
@@ -33,6 +33,9 @@ namespace Spindles {
     void Null::init() {
         is_reversable = false;
         config_message();
+        if (_speeds.size() == 0) {
+            _speeds.push_back({ 0, 0 });
+        }
     }
     void IRAM_ATTR Null::setSpeedfromISR(uint32_t dev_speed) {};
     void           Null::setState(SpindleState state, SpindleSpeed speed) {