From 0235bc0f8cb93b78b7c2dcfbca9641f30ce0c921 Mon Sep 17 00:00:00 2001
From: Shantur Rathore <shantur.rathore@bskyb.com>
Date: Wed, 14 Aug 2019 14:52:37 +0100
Subject: [PATCH 1/2] Tuya Dimmer: Make dimmer lower limit optional.

Not all Tuya dimmers have a lower limit of 10% (25)
---
 sonoff/settings.h             | 2 +-
 sonoff/settings.ino           | 1 +
 sonoff/xdrv_16_tuyadimmer.ino | 4 +++-
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/sonoff/settings.h b/sonoff/settings.h
index 8af704831..11e200a99 100644
--- a/sonoff/settings.h
+++ b/sonoff/settings.h
@@ -82,7 +82,7 @@ typedef union {                            // Restricted by MISRA-C Rule 18.4 bu
     uint32_t tuya_dimmer_range_255 : 1;    // bit 16 (v6.6.0.1)  - SetOption66 - Enable or Disable Dimmer range 255 slider control
     uint32_t buzzer_enable : 1;            // bit 17 (v6.6.0.1)  - SetOption67 - Enable buzzer when available
     uint32_t pwm_multi_channels : 1;       // bit 18 (v6.6.0.3)  - SetOption68 - Enable multi-channels PWM instead of Color PWM
-    uint32_t spare19 : 1;
+    uint32_t tuya_dimmer_min_limit : 1;    // bit 19 (v6.6.0.5)  - SetOption69 - Limits Tuya dimmers to minimum of 10% (25) when enabled.
     uint32_t spare20 : 1;
     uint32_t spare21 : 1;
     uint32_t spare22 : 1;
diff --git a/sonoff/settings.ino b/sonoff/settings.ino
index c94674b49..35659a543 100644
--- a/sonoff/settings.ino
+++ b/sonoff/settings.ino
@@ -890,6 +890,7 @@ void SettingsDefaultSet2(void)
   Settings.light_pixels = WS2812_LEDS;
 //  Settings.light_rotation = 0;
   SettingsDefaultSet_5_8_1();    // Clock color
+  Settings.flag3.tuya_dimmer_min_limit = 1;
 
   // Display
   SettingsDefaultSet_5_10_1();   // Display settings
diff --git a/sonoff/xdrv_16_tuyadimmer.ino b/sonoff/xdrv_16_tuyadimmer.ino
index 362d85a3a..a1d3ec91f 100644
--- a/sonoff/xdrv_16_tuyadimmer.ino
+++ b/sonoff/xdrv_16_tuyadimmer.ino
@@ -143,7 +143,9 @@ bool TuyaSetChannels(void)
 void LightSerialDuty(uint8_t duty)
 {
   if (duty > 0 && !tuya_ignore_dim && TuyaSerial) {
-    if (duty < 25) { duty = 25; }  // dimming acts odd below 25(10%) - this mirrors the threshold set on the faceplate itself
+    if (Settings.flag3.tuya_dimmer_min_limit) { // Enable dimming limit SetOption69: Enabled by default
+      if (duty < 25) { duty = 25; }  // dimming acts odd below 25(10%) - this mirrors the threshold set on the faceplate itself
+    }
 
     if (Settings.flag3.tuya_show_dimmer == 0) {
       if(Settings.flag3.tuya_dimmer_range_255 == 0) {

From 82622e1c1a379fd4793de98b17496811f38b8d2d Mon Sep 17 00:00:00 2001
From: Theo Arends <11044339+arendst@users.noreply.github.com>
Date: Wed, 14 Aug 2019 16:41:45 +0200
Subject: [PATCH 2/2] Keep defaults

---
 sonoff/settings.ino | 1 -
 1 file changed, 1 deletion(-)

diff --git a/sonoff/settings.ino b/sonoff/settings.ino
index 35659a543..c94674b49 100644
--- a/sonoff/settings.ino
+++ b/sonoff/settings.ino
@@ -890,7 +890,6 @@ void SettingsDefaultSet2(void)
   Settings.light_pixels = WS2812_LEDS;
 //  Settings.light_rotation = 0;
   SettingsDefaultSet_5_8_1();    // Clock color
-  Settings.flag3.tuya_dimmer_min_limit = 1;
 
   // Display
   SettingsDefaultSet_5_10_1();   // Display settings