💡 Comment variant timers

Marlin/src/HAL/STM32/timers.cpp

   #define MCU_STEP_TIMER  4
   #define MCU_TEMP_TIMER  2
 #elif defined(STM32F401xC) || defined(STM32F401xE)
-  #define MCU_STEP_TIMER  9
+  #define MCU_STEP_TIMER  9           // STM32F401 has no TIM6, TIM7, or TIM8
   #define MCU_TEMP_TIMER 10
 #elif defined(STM32F4xx) || defined(STM32F7xx) || defined(STM32H7xx)
-  #define MCU_STEP_TIMER  6           // STM32F401 has no TIM6, TIM7, or TIM8
+  #define MCU_STEP_TIMER  6
   #define MCU_TEMP_TIMER 14           // TIM7 is consumed by Software Serial if used.
 #endif
 

buildroot/share/PlatformIO/variants/MARLIN_ARTILLERY_RUBY/variant.h

 // TIM9  - STEP_TIMER
 // TIM10 - TEMP_TIMER
 // TIM11 -
-#define TIMER_SERVO             TIM2
-#define TIMER_TONE              TIM5
+#define TIMER_SERVO             TIM2  // TIMER_SERVO must be defined in this file
+#define TIMER_TONE              TIM5  // TIMER_TONE must be defined in this file
 
 // UART Definitions
 #define SERIAL_UART_INSTANCE    1

buildroot/share/PlatformIO/variants/MARLIN_BIGTREE_BTT002/variant.h

 
 // Timer Definitions
 // Do not use timer used by PWM pins when possible. See PinMap_PWM in PeripheralPins.c
-#define TIMER_TONE              TIM7
-#define TIMER_SERVO             TIM5
-#define TIMER_SERIAL            TIM2
+#define TIMER_TONE              TIM7  // TIMER_TONE must be defined in this file
+#define TIMER_SERVO             TIM5  // TIMER_SERVO must be defined in this file
+#define TIMER_SERIAL            TIM2  // TIMER_SERIAL must be defined in this file
 
 // UART Definitions
 // Define here Serial instance number to map on Serial generic name

buildroot/share/PlatformIO/variants/MARLIN_BIGTREE_E3_RRF/variant.h

 
 // Timer Definitions
 // Do not use timer used by PWM pins when possible. See PinMap_PWM in PeripheralPins.c
-#define TIMER_TONE              TIM7
-#define TIMER_SERVO             TIM5
-#define TIMER_SERIAL            TIM8
+#define TIMER_TONE              TIM7  // TIMER_TONE must be defined in this file
+#define TIMER_SERVO             TIM5  // TIMER_SERVO must be defined in this file
+#define TIMER_SERIAL            TIM8  // TIMER_SERIAL must be defined in this file
 
 // UART Definitions
 // Define here Serial instance number to map on Serial generic name

buildroot/share/PlatformIO/variants/MARLIN_BIGTREE_GTR_V1/variant.h

 
 // Timer Definitions
 // Do not use timer used by PWM pins when possible. See PinMap_PWM in PeripheralPins.c
-#define TIMER_TONE              TIM10
-#define TIMER_SERVO             TIM5
-#define TIMER_SERIAL            TIM7
+#define TIMER_TONE              TIM10 // TIMER_TONE must be defined in this file
+#define TIMER_SERVO             TIM5  // TIMER_SERVO must be defined in this file
+#define TIMER_SERIAL            TIM7  // TIMER_SERIAL must be defined in this file
 
 // UART Definitions
 //#define ENABLE_HWSERIAL1        done automatically by the #define SERIAL_UART_INSTANCE below

buildroot/share/PlatformIO/variants/MARLIN_BIGTREE_OCTOPUS_PRO_V1_F429/variant.h

 
 // Timer Definitions
 // Do not use timer used by PWM pin. See PinMap_PWM.
-#define TIMER_TONE              TIM6
-#define TIMER_SERVO             TIM5
-#define TIMER_SERIAL            TIM7
+#define TIMER_TONE              TIM6  // TIMER_TONE must be defined in this file
+#define TIMER_SERVO             TIM5  // TIMER_SERVO must be defined in this file
+#define TIMER_SERIAL            TIM7  // TIMER_SERIAL must be defined in this file
 
 // UART Definitions
 //#define SERIAL_UART_INSTANCE    1 // Connected to EXP3 header

buildroot/share/PlatformIO/variants/MARLIN_BIGTREE_OCTOPUS_V1/variant.h

 
 // Timer Definitions
 // Do not use timer used by PWM pin. See PinMap_PWM.
-#define TIMER_TONE              TIM6
-#define TIMER_SERVO             TIM5
-#define TIMER_SERIAL            TIM7
+#define TIMER_TONE              TIM6  // TIMER_TONE must be defined in this file
+#define TIMER_SERVO             TIM5  // TIMER_SERVO must be defined in this file
+#define TIMER_SERIAL            TIM7  // TIMER_SERIAL must be defined in this file
 
 // UART Definitions
 //#define SERIAL_UART_INSTANCE    1 // Connected to EXP3 header

buildroot/share/PlatformIO/variants/MARLIN_BIGTREE_SKR_PRO_11/variant.h

 
 // Timer Definitions
 // Do not use timer used by PWM pins when possible. See PinMap_PWM in PeripheralPins.c
-#define TIMER_TONE              TIM2
-#define TIMER_SERVO             TIM5 // Only 1 Servo PIN on SKR-PRO, so use the same timer as defined in PeripheralPins
-#define TIMER_SERIAL            TIM7
+#define TIMER_TONE              TIM2  // TIMER_TONE must be defined in this file
+#define TIMER_SERVO             TIM5  // Only 1 Servo PIN on SKR-PRO, so use the same timer as defined in PeripheralPins
+#define TIMER_SERIAL            TIM7  // TIMER_SERIAL must be defined in this file
 
 // UART Definitions
 //#define ENABLE_HWSERIAL1        done automatically by the #define SERIAL_UART_INSTANCE below

buildroot/share/PlatformIO/variants/MARLIN_BTT_SKR_SE_BX/variant.h

 
 // Timer Definitions
 // Do not use timer used by PWM pins when possible. See PinMap_PWM in PeripheralPins.c
-#define TIMER_TONE              TIM2
-#define TIMER_SERVO             TIM5
-#define TIMER_SERIAL            TIM7
+#define TIMER_TONE              TIM2  // TIMER_TONE must be defined in this file
+#define TIMER_SERVO             TIM5  // TIMER_SERVO must be defined in this file
+#define TIMER_SERIAL            TIM7  // TIMER_SERIAL must be defined in this file
 
 // UART1 for TFT port
 #define ENABLE_HWSERIAL1

buildroot/share/PlatformIO/variants/MARLIN_F103Rx/variant.h

 
 // Timer Definitions
 #ifndef TIMER_TONE
-  #define TIMER_TONE            TIM3
+  #define TIMER_TONE            TIM3  // TIMER_TONE must be defined in this file
 #endif
 #ifndef TIMER_SERVO
-  #define TIMER_SERVO           TIM2
+  #define TIMER_SERVO           TIM2  // TIMER_SERVO must be defined in this file
 #endif
 
 // UART Definitions

buildroot/share/PlatformIO/variants/MARLIN_F103VE_LONGER/variant.h

 #define TEMP_TIMER              3
 // Leave TIMER 4 for TFT backlight PWM or Servo freq...
 #define STEP_TIMER              5
-#define TIMER_TONE              TIM6
-#define TIMER_SERVO             TIM7
-#define TIMER_SERIAL            TIM8
+#define TIMER_TONE              TIM6  // TIMER_TONE must be defined in this file
+#define TIMER_SERVO             TIM7  // TIMER_SERVO must be defined in this file
+#define TIMER_SERIAL            TIM8  // TIMER_SERIAL must be defined in this file
 
 // UART Definitions
 // Define here Serial instance number to map on Serial generic name

buildroot/share/PlatformIO/variants/MARLIN_F103Vx/variant.h

 // Timer Definitions (optional)
 // Use TIM6/TIM7 when possible as servo and tone don't need GPIO output pin
 #ifndef TIMER_TONE
-  #define TIMER_TONE            TIM6
+  #define TIMER_TONE            TIM6  // TIMER_TONE must be defined in this file
 #endif
 #ifndef TIMER_SERVO
-  #define TIMER_SERVO           TIM7
+  #define TIMER_SERVO           TIM7  // TIMER_SERVO must be defined in this file
 #endif
 
 // UART Definitions

buildroot/share/PlatformIO/variants/MARLIN_F103Zx/variant.h

 
 // Timer Definitions (optional)
 // Use TIM6/TIM7 when possible as servo and tone don't need GPIO output pin
-#define TIMER_TONE              TIM6
-#define TIMER_SERVO             TIM7
+#define TIMER_TONE              TIM6  // TIMER_TONE must be defined in this file
+#define TIMER_SERVO             TIM7  // TIMER_SERVO must be defined in this file
 
 // UART Definitions
 // Define here Serial instance number to map on Serial generic name

buildroot/share/PlatformIO/variants/MARLIN_F407VE/variant.h

 
 // Timer Definitions
 // Do not use timer used by PWM pins when possible. See PinMap_PWM in PeripheralPins.c
-#define TIMER_TONE              TIM6
+#define TIMER_TONE              TIM6  // TIMER_TONE must be defined in this file
 
 // Do not use basic timer: OC is required
-#define TIMER_SERVO             TIM2  //TODO: advanced-control timers don't work
+#define TIMER_SERVO             TIM2  // TODO: advanced-control timers don't work
 
 // UART Definitions
 // Define here Serial instance number to map on Serial generic name

buildroot/share/PlatformIO/variants/MARLIN_F446VE/variant.h

 // Timer Definitions
 // Use TIM6/TIM7 when possible as servo and tone don't need GPIO output pin
 #ifndef TIMER_TONE
-#define TIMER_TONE              TIM6
+  #define TIMER_TONE            TIM6  // TIMER_TONE must be defined in this file
 #endif
 
 #ifndef TIMER_SERVO
-#define TIMER_SERVO             TIM7
+  #define TIMER_SERVO           TIM7  // TIMER_SERVO must be defined in this file
 #endif
 
 #ifndef TIMER_SERIAL
-#define TIMER_SERIAL            TIM9
+  #define TIMER_SERIAL          TIM9  // TIMER_SERIAL must be defined in this file
 #endif
 
 // UART Definitions

buildroot/share/PlatformIO/variants/MARLIN_F4x7Vx/variant.h

 // Timer Definitions
 // Use TIM6/TIM7 when possible as servo and tone don't need GPIO output pin
 #ifndef TIMER_TONE
-  #define TIMER_TONE            TIM6
+  #define TIMER_TONE            TIM6  // TIMER_TONE must be defined in this file
 #endif
 #ifndef TIMER_SERVO
-  #define TIMER_SERVO           TIM7
+  #define TIMER_SERVO           TIM7  // TIMER_SERVO must be defined in this file
 #endif
 #ifndef TIMER_SERIAL
-  #define TIMER_SERIAL          TIM5
+  #define TIMER_SERIAL          TIM5  // TIMER_SERIAL must be defined in this file
 #endif
 
 // UART Definitions

buildroot/share/PlatformIO/variants/MARLIN_FLY_F407ZG/variant.h

 
 // Timer Definitions
 // Do not use timer used by PWM pins when possible. See PinMap_PWM in PeripheralPins.c
-#define TIMER_TONE              TIM6
+#define TIMER_TONE              TIM6  // TIMER_TONE must be defined in this file
 
 // Do not use basic timer: OC is required
-#define TIMER_SERVO             TIM1  //TODO: advanced-control timers don't work
+#define TIMER_SERVO             TIM1  // TODO: advanced-control timers don't work
 
 // UART Definitions
 // Define here Serial instance number to map on Serial generic name

buildroot/share/PlatformIO/variants/MARLIN_FYSETC_CHEETAH_V20/variant.h

 #define PIN_SPI_MISO            PA6
 #define PIN_SPI_SCK             PA5
 
-
 // Timer Definitions
-#define TIMER_TONE              TIM2
-#define TIMER_SERVO             TIM5
-#define TIMER_SERIAL            TIM11
+#define TIMER_TONE              TIM2  // TIMER_TONE must be defined in this file
+#define TIMER_SERVO             TIM5  // TIMER_SERVO must be defined in this file
+#define TIMER_SERIAL            TIM11 // TIMER_SERIAL must be defined in this file
 
 // UART Definitions
 //#define ENABLE_HWSERIAL1        done automatically by the #define SERIAL_UART_INSTANCE below
 #define ENABLE_HWSERIAL2
 
-
 // Define here Serial instance number to map on Serial generic name (if not already used by SerialUSB)
 #define SERIAL_UART_INSTANCE    1 //1 for Serial = Serial1 (USART1)
 
   #define SERIAL_PORT_HARDWARE_OPEN   Serial2
 #endif
 
-#endif /* _VARIANT_ARDUINO_STM32_ */
+#endif /* _VARIANT_ARDUINO_STM32_ */

buildroot/share/PlatformIO/variants/MARLIN_FYSETC_S6/variant.h

 
 // Timer Definitions
 // Do not use timer used by PWM pin. See PinMap_PWM.
-#define TIMER_TONE              TIM6
-#define TIMER_SERVO             TIM5
-#define TIMER_SERIAL            TIM7
+#define TIMER_TONE              TIM6  // TIMER_TONE must be defined in this file
+#define TIMER_SERVO             TIM5  // TIMER_SERVO must be defined in this file
+#define TIMER_SERIAL            TIM7  // TIMER_SERIAL must be defined in this file
 
 // UART Definitions
 //#define SERIAL_UART_INSTANCE    1 // Connected to EXP3 header

buildroot/share/PlatformIO/variants/MARLIN_LERDGE/variant.h

 // Do not use timer used by PWM pins when possible. See PinMap_PWM in PeripheralPins.c
 // FANs may require PWM timers 3 10 11 13
 // The LED/RGB connectors timer 4
-// Beware: STEP_TIMER default is 6 and TEMP_TIMER 14 for the F407
+// Beware: MCU_TIMER_STEP default is 6 and MCU_TIMER_TEMP 14 for the F407
 #ifndef TIMER_TONE
   #define TIMER_TONE            TIM8  // TIM3 or TIM8 for SPEAKER compat on the lerdge K (PC6)
 #endif                                // TIM4 for that on the Lerdge S (PD11)

buildroot/share/PlatformIO/variants/MARLIN_TH3D_EZBOARD_V2/variant.h

 
 // Timer Definitions
 // Use TIM6/TIM7 when possible as servo and tone don't need GPIO output pin
-#define TIMER_TONE              TIM5
-#define TIMER_SERVO             TIM4
+#define TIMER_TONE              TIM5  // TIMER_TONE must be defined in this file
+#define TIMER_SERVO             TIM4  // TIMER_SERVO must be defined in this file
 
 // UART Definitions
 // Define here Serial instance number to map on Serial generic name