From e94f782f51c7b60ec354b7e637a2b86dce359781 Mon Sep 17 00:00:00 2001
From: vivian-ng <vivian@maplerain.com>
Date: Thu, 16 Jan 2020 09:49:15 +0900
Subject: [PATCH] Shared SPI sanity check (#16581)

---
 Marlin/src/inc/SanityCheck.h          | 8 ++++++++
 Marlin/src/pins/esp32/pins_MRR_ESPA.h | 2 ++
 Marlin/src/pins/esp32/pins_MRR_ESPE.h | 1 +
 3 files changed, 11 insertions(+)

diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
index c95036a588..da27aef8e8 100644
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@@ -2513,3 +2513,11 @@ static_assert(   _ARR_TEST(3,0) && _ARR_TEST(3,1) && _ARR_TEST(3,2)
 #if HAS_ADC_BUTTONS && defined(ADC_BUTTON_DEBOUNCE_DELAY) && !WITHIN(ADC_BUTTON_DEBOUNCE_DELAY, 16, 255)
   #error "ADC_BUTTON_DEBOUNCE_DELAY must be an integer from 16 to 255."
 #endif
+
+/**
+ * Check to make sure MONITOR_DRIVER_STATUS isn't enabled
+ * on boards where TMC drivers share the SPI bus with SD.
+ */
+#if TMC_HAS_SPI && ALL(MONITOR_DRIVER_STATUS, SDSUPPORT, USES_SHARED_SPI)
+  #error "MONITOR_DRIVER_STATUS and SDSUPPORT cannot be used together on boards with shared SPI."
+#endif
diff --git a/Marlin/src/pins/esp32/pins_MRR_ESPA.h b/Marlin/src/pins/esp32/pins_MRR_ESPA.h
index e778c4e335..1a7967d579 100644
--- a/Marlin/src/pins/esp32/pins_MRR_ESPA.h
+++ b/Marlin/src/pins/esp32/pins_MRR_ESPA.h
@@ -99,3 +99,5 @@
 #define MISO_PIN           19
 #define SCK_PIN            18
 #define SDSS                5
+#define USES_SHARED_SPI  // SPI is shared by SD card with TMC SPI drivers
+
diff --git a/Marlin/src/pins/esp32/pins_MRR_ESPE.h b/Marlin/src/pins/esp32/pins_MRR_ESPE.h
index cd2da98452..cffdfa465d 100644
--- a/Marlin/src/pins/esp32/pins_MRR_ESPE.h
+++ b/Marlin/src/pins/esp32/pins_MRR_ESPE.h
@@ -118,6 +118,7 @@
 #define MISO_PIN           19
 #define SCK_PIN            18
 #define SDSS                5
+#define USES_SHARED_SPI  // SPI is shared by SD card with TMC SPI drivers
 
 //////////////////////////
 // LCDs and Controllers //