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BTT driver expansion for SKR 1.3/1.4 (#20088)

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Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>
This commit is contained in:
ellensp 2020-11-11 15:06:42 +13:00 committed by Scott Lahteine
parent 8eb5950ebd
commit 42b37da1e7
7 changed files with 157 additions and 80 deletions
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2
Marlin/src/lcd/tft/ui_320x240.cpp
View file

@ -649,7 +649,7 @@ void menu_item(const uint8_t row, bool sel ) {
menu_line(row, sel ? COLOR_SELECTION_BG : COLOR_BACKGROUND); menu_line(row, sel ? COLOR_SELECTION_BG : COLOR_BACKGROUND);
#if ENABLED(TOUCH_SCREEN) #if ENABLED(TOUCH_SCREEN)
const TouchControlType tct = TERN(SINGLE_TOUCH_NAVIGATION, true, sel) ? CLICK : MENU_ITEM; const TouchControlType tct = TERN(SINGLE_TOUCH_NAVIGATION, true, sel) ? CLICK : MENU_ITEM;
touch.add_control(tct, 0, 2 + 34 * row, 320, 32, encoderTopLine + row); touch.add_control(tct, 0, 2 + 34 * row, TFT_WIDTH, 32, encoderTopLine + row);
#endif #endif
} }

164
Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h
View file

@ -208,31 +208,57 @@
#define E1_SERIAL_TX_PIN P1_01 #define E1_SERIAL_TX_PIN P1_01
#define E1_SERIAL_RX_PIN P1_01 #define E1_SERIAL_RX_PIN P1_01
#define Z2_SERIAL_TX_PIN P1_01
#define Z2_SERIAL_RX_PIN P1_01
// Reduce baud rate to improve software serial reliability // Reduce baud rate to improve software serial reliability
#define TMC_BAUD_RATE 19200 #define TMC_BAUD_RATE 19200
#endif #endif
/* _____ _____
* NC | 1 2 | GND 5V | 1 2 | GND
* RESET | 3 4 | 1.31 1.23 | 3 4 | 1.22
* 0.18 | 5 6 3.25 1.21 | 5 6 1.20
* 0.16 | 7 8 | 3.26 1.19 | 7 8 | 1.18
* 0.15 | 9 10| 0.17 0.28 | 9 10| 1.30
* ----- -----
* EXP2 EXP1
*/
#define EXPA1_03_PIN P1_23
#define EXPA1_04_PIN P1_22
#define EXPA1_05_PIN P1_21
#define EXPA1_06_PIN P1_20
#define EXPA1_07_PIN P1_19
#define EXPA1_08_PIN P1_18
#define EXPA1_09_PIN P0_28
#define EXPA1_10_PIN P1_30
#define EXPA2_03_PIN -1
#define EXPA2_04_PIN P1_31
#define EXPA2_05_PIN P0_18
#define EXPA2_06_PIN P3_25
#define EXPA2_07_PIN P0_16
#define EXPA2_08_PIN P3_26
#define EXPA2_09_PIN P0_15
#define EXPA2_10_PIN P0_17
// //
// SD Connection // SD Connection
// //
#if SD_CONNECTION_IS(LCD) #if SD_CONNECTION_IS(LCD)
#define SS_PIN P0_16 #define SS_PIN EXPA2_07_PIN
#endif #endif
/** /**
* _____ _____ * _____ _____
* NC | · · | GND 5V | · · | GND * NC | · · | GND 5V | · · | GND
* RESET | · · | 1.31 (SD_DETECT) (LCD_D7) 1.23 | · · | 1.22 (LCD_D6) * RESET | · · | 1.31 (SD_DETECT) (LCD_D7) 1.23 | · · | 1.22 (LCD_D6)
* (MOSI) 0.18 | · · | 3.25 (BTN_EN2) (LCD_D5) 1.21 | · · | 1.20 (LCD_D4) * (MOSI) 0.18 | · · 3.25 (BTN_EN2) (LCD_D5) 1.21 | · · 1.20 (LCD_D4)
* (SD_SS) 0.16 | · · | 3.26 (BTN_EN1) (LCD_RS) 1.19 | · · | 1.18 (LCD_EN) * (SD_SS) 0.16 | · · | 3.26 (BTN_EN1) (LCD_RS) 1.19 | · · | 1.18 (LCD_EN)
* (SCK) 0.15 | · · | 0.17 (MISO) (BTN_ENC) 0.28 | · · | 1.30 (BEEPER) * (SCK) 0.15 | · · | 0.17 (MISO) (BTN_ENC) 0.28 | · · | 1.30 (BEEPER)
* ----- ----- * ----- -----
* EXP2 EXP1 * EXP2 EXP1
*/ */
#if HAS_WIRED_LCD
#if HAS_WIRED_LCD && !HAS_BTT_EXP_MOT
#if ENABLED(ANET_FULL_GRAPHICS_LCD_ALT_WIRING) #if ENABLED(ANET_FULL_GRAPHICS_LCD_ALT_WIRING)
#error "ANET_FULL_GRAPHICS_LCD_ALT_WIRING only applies to the ANET 1.0 board." #error "ANET_FULL_GRAPHICS_LCD_ALT_WIRING only applies to the ANET 1.0 board."
@ -251,33 +277,33 @@
* *
* BEFORE AFTER * BEFORE AFTER
* _____ _____ * _____ _____
* GND 1 | 1 2 | 2 5V 5V 1 | 1 2 | 2 GND * GND | 1 2 | 5V 5V | 1 2 | GND
* CS 3 | 3 4 | 4 BTN_EN2 CS 3 | 3 4 | 4 BTN_EN2 * CS | 3 4 | BTN_EN2 CS | 3 4 | BTN_EN2
* SID 5 | 5 6 6 BTN_EN1 SID 5 | 5 6 6 BTN_EN1 * SID | 5 6 BTN_EN1 SID | 5 6 BTN_EN1
* open 7 | 7 8 | 8 BTN_ENC CLK 7 | 7 8 | 8 BTN_ENC * open | 7 8 | BTN_ENC CLK | 7 8 | BTN_ENC
* CLK 9 | 9 10| 10 Beeper open 9 | 9 10| 10 Beeper * CLK | 9 10| Beeper open | 9 10| Beeper
* ----- ----- * ----- -----
* LCD LCD * LCD LCD
*/ */
#define LCD_PINS_RS P1_23 #define LCD_PINS_RS EXPA1_03_PIN
#define BTN_EN1 P1_20 #define BTN_EN1 EXPA1_06_PIN
#define BTN_EN2 P1_22 #define BTN_EN2 EXPA1_04_PIN
#define BTN_ENC P1_18 #define BTN_ENC EXPA1_08_PIN
#define LCD_PINS_ENABLE P1_21 #define LCD_PINS_ENABLE EXPA1_05_PIN
#define LCD_PINS_D4 P1_19 #define LCD_PINS_D4 EXPA1_07_PIN
#elif ENABLED(CR10_STOCKDISPLAY) #elif ENABLED(CR10_STOCKDISPLAY)
#define BTN_ENC P0_28 // (58) open-drain #define BTN_ENC EXPA1_09_PIN // (58) open-drain
#define LCD_PINS_RS P1_22 #define LCD_PINS_RS EXPA1_04_PIN
#define BTN_EN1 P1_18 #define BTN_EN1 EXPA1_08_PIN
#define BTN_EN2 P1_20 #define BTN_EN2 EXPA1_06_PIN
#define LCD_PINS_ENABLE P1_23 #define LCD_PINS_ENABLE EXPA1_03_PIN
#define LCD_PINS_D4 P1_21 #define LCD_PINS_D4 EXPA1_05_PIN
#elif ENABLED(ENDER2_STOCKDISPLAY) #elif ENABLED(ENDER2_STOCKDISPLAY)
@ -285,43 +311,43 @@
* _____ * _____
* 5V | 1 2 | GND * 5V | 1 2 | GND
* (MOSI) 1.23 | 3 4 | 1.22 (LCD_RS) * (MOSI) 1.23 | 3 4 | 1.22 (LCD_RS)
* (LCD_A0) 1.21 | 5 6 | 1.20 (BTN_EN2) * (LCD_A0) 1.21 | 5 6 1.20 (BTN_EN2)
* RESET 1.19 | 7 8 | 1.18 (BTN_EN1) * RESET 1.19 | 7 8 | 1.18 (BTN_EN1)
* (BTN_ENC) 0.28 | 9 10| 1.30 (SCK) * (BTN_ENC) 0.28 | 9 10| 1.30 (SCK)
* ----- * -----
* EXP1 * EXP1
*/ */
#define BTN_EN1 P1_18 #define BTN_EN1 EXPA1_08_PIN
#define BTN_EN2 P1_20 #define BTN_EN2 EXPA1_06_PIN
#define BTN_ENC P0_28 #define BTN_ENC EXPA1_09_PIN
#define DOGLCD_CS P1_22 #define DOGLCD_CS EXPA1_04_PIN
#define DOGLCD_A0 P1_21 #define DOGLCD_A0 EXPA1_05_PIN
#define DOGLCD_SCK P1_30 #define DOGLCD_SCK EXPA1_10_PIN
#define DOGLCD_MOSI P1_23 #define DOGLCD_MOSI EXPA1_03_PIN
#define FORCE_SOFT_SPI #define FORCE_SOFT_SPI
#define LCD_BACKLIGHT_PIN -1 #define LCD_BACKLIGHT_PIN -1
#elif HAS_SPI_TFT // Config for Classic UI (emulated DOGM) and Color UI #elif HAS_SPI_TFT // Config for Classic UI (emulated DOGM) and Color UI
#define TFT_CS_PIN P1_22 #define TFT_CS_PIN EXPA1_04_PIN
#define TFT_A0_PIN P1_23 #define TFT_A0_PIN EXPA1_03_PIN
#define TFT_DC_PIN P1_23 #define TFT_DC_PIN EXPA1_03_PIN
#define TFT_MISO_PIN P0_17 #define TFT_MISO_PIN EXPA2_10_PIN
#define TFT_BACKLIGHT_PIN P1_18 #define TFT_BACKLIGHT_PIN EXPA1_08_PIN
#define TFT_RESET_PIN P1_19 #define TFT_RESET_PIN EXPA1_07_PIN
#define LCD_USE_DMA_SPI #define LCD_USE_DMA_SPI
#define TOUCH_INT_PIN P1_21 #define TOUCH_INT_PIN EXPA1_05_PIN
#define TOUCH_CS_PIN P1_20 #define TOUCH_CS_PIN EXPA1_06_PIN
#define TOUCH_BUTTONS_HW_SPI #define TOUCH_BUTTONS_HW_SPI
#define TOUCH_BUTTONS_HW_SPI_DEVICE 1 #define TOUCH_BUTTONS_HW_SPI_DEVICE 1
// SPI 1 // SPI 1
#define SCK_PIN P0_15 #define SCK_PIN EXPA2_09_PIN
#define MISO_PIN P0_17 #define MISO_PIN EXPA2_10_PIN
#define MOSI_PIN P0_18 #define MOSI_PIN EXPA2_05_PIN
// Disable any LCD related PINs config // Disable any LCD related PINs config
#define LCD_PINS_ENABLE -1 #define LCD_PINS_ENABLE -1
@ -361,72 +387,72 @@
#elif IS_TFTGLCD_PANEL #elif IS_TFTGLCD_PANEL
#if ENABLED(TFTGLCD_PANEL_SPI) #if ENABLED(TFTGLCD_PANEL_SPI)
#define TFTGLCD_CS P3_26 #define TFTGLCD_CS EXPA2_08_PIN
#endif #endif
#define SD_DETECT_PIN P1_31 #define SD_DETECT_PIN EXPA2_04_PIN
#else #else
#define BTN_ENC P0_28 // (58) open-drain #define BTN_ENC EXPA1_09_PIN // (58) open-drain
#define LCD_PINS_RS P1_19 #define LCD_PINS_RS EXPA1_07_PIN
#define BTN_EN1 P3_26 // (31) J3-2 & AUX-4 #define BTN_EN1 EXPA2_08_PIN // (31) J3-2 & AUX-4
#define BTN_EN2 P3_25 // (33) J3-4 & AUX-4 #define BTN_EN2 EXPA2_06_PIN // (33) J3-4 & AUX-4
#define LCD_PINS_ENABLE P1_18 #define LCD_PINS_ENABLE EXPA1_08_PIN
#define LCD_PINS_D4 P1_20 #define LCD_PINS_D4 EXPA1_06_PIN
#define LCD_SDSS P0_16 // (16) J3-7 & AUX-4 #define LCD_SDSS EXPA2_07_PIN // (16) J3-7 & AUX-4
#if SD_CONNECTION_IS(LCD) #if SD_CONNECTION_IS(LCD)
#define SD_DETECT_PIN P1_31 // (49) (NOT 5V tolerant) #define SD_DETECT_PIN EXPA2_04_PIN // (49) (NOT 5V tolerant)
#endif #endif
#if ENABLED(FYSETC_MINI_12864) #if ENABLED(FYSETC_MINI_12864)
#define DOGLCD_CS P1_18 #define DOGLCD_CS EXPA1_08_PIN
#define DOGLCD_A0 P1_19 #define DOGLCD_A0 EXPA1_07_PIN
#define DOGLCD_SCK P0_15 #define DOGLCD_SCK EXPA2_09_PIN
#define DOGLCD_MOSI P0_18 #define DOGLCD_MOSI EXPA2_05_PIN
#define LCD_BACKLIGHT_PIN -1 #define LCD_BACKLIGHT_PIN -1
#define FORCE_SOFT_SPI // Use this if default of hardware SPI causes display problems #define FORCE_SOFT_SPI // Use this if default of hardware SPI causes display problems
// results in LCD soft SPI mode 3, SD soft SPI mode 0 // results in LCD soft SPI mode 3, SD soft SPI mode 0
#define LCD_RESET_PIN P1_20 // Must be high or open for LCD to operate normally. #define LCD_RESET_PIN EXPA1_06_PIN // Must be high or open for LCD to operate normally.
#if EITHER(FYSETC_MINI_12864_1_2, FYSETC_MINI_12864_2_0) #if EITHER(FYSETC_MINI_12864_1_2, FYSETC_MINI_12864_2_0)
#ifndef RGB_LED_R_PIN #ifndef RGB_LED_R_PIN
#define RGB_LED_R_PIN P1_21 #define RGB_LED_R_PIN EXPA1_05_PIN
#endif #endif
#ifndef RGB_LED_G_PIN #ifndef RGB_LED_G_PIN
#define RGB_LED_G_PIN P1_22 #define RGB_LED_G_PIN EXPA1_04_PIN
#endif #endif
#ifndef RGB_LED_B_PIN #ifndef RGB_LED_B_PIN
#define RGB_LED_B_PIN P1_23 #define RGB_LED_B_PIN EXPA1_03_PIN
#endif #endif
#elif ENABLED(FYSETC_MINI_12864_2_1) #elif ENABLED(FYSETC_MINI_12864_2_1)
#define NEOPIXEL_PIN P1_21 #define NEOPIXEL_PIN EXPA1_05_PIN
#endif #endif
#else // !FYSETC_MINI_12864 #else // !FYSETC_MINI_12864
#if ENABLED(MKS_MINI_12864) #if ENABLED(MKS_MINI_12864)
#define DOGLCD_CS P1_21 #define DOGLCD_CS EXPA1_05_PIN
#define DOGLCD_A0 P1_22 #define DOGLCD_A0 EXPA1_04_PIN
#define DOGLCD_SCK P0_15 #define DOGLCD_SCK EXPA2_09_PIN
#define DOGLCD_MOSI P0_18 #define DOGLCD_MOSI EXPA2_05_PIN
#define FORCE_SOFT_SPI #define FORCE_SOFT_SPI
#endif #endif
#if IS_ULTIPANEL #if IS_ULTIPANEL
#define LCD_PINS_D5 P1_21 #define LCD_PINS_D5 EXPA1_05_PIN
#define LCD_PINS_D6 P1_22 #define LCD_PINS_D6 EXPA1_04_PIN
#define LCD_PINS_D7 P1_23 #define LCD_PINS_D7 EXPA1_03_PIN
#if ENABLED(REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER) #if ENABLED(REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
#define BTN_ENC_EN LCD_PINS_D7 // Detect the presence of the encoder #define BTN_ENC_EN EXPA1_03_PIN // Detect the presence of the encoder
#endif #endif
#endif #endif

51
Marlin/src/pins/lpc1768/pins_BTT_SKR_common.h
View file

@ -29,6 +29,14 @@
#error "Oops! Make sure you have the LPC1768 environment selected in your IDE." #error "Oops! Make sure you have the LPC1768 environment selected in your IDE."
#endif #endif
// If you have the Big tree tech driver expantion module, enable HAS_BTT_EXP_MOT
// https://github.com/bigtreetech/BTT-Expansion-module/tree/master/BTT%20EXP-MOT
//#define HAS_BTT_EXP_MOT 1
#if BOTH(HAS_WIRED_LCD,HAS_BTT_EXP_MOT)
#ERROR "Having a LCD on EXP1/EXP2 and a expanion motor module on EXP1/EXP2 is not possable."
#endif
// Ignore temp readings during development. // Ignore temp readings during development.
//#define BOGUS_TEMPERATURE_GRACE_PERIOD 2000 //#define BOGUS_TEMPERATURE_GRACE_PERIOD 2000
@ -115,3 +123,46 @@
#elif SD_CONNECTION_IS(CUSTOM_CABLE) #elif SD_CONNECTION_IS(CUSTOM_CABLE)
#error "No custom SD drive cable defined for this board." #error "No custom SD drive cable defined for this board."
#endif #endif
#if HAS_BTT_EXP_MOT
/* _____ _____
* NC | · · | GND NC | · · | GND
* NC | · · | 1.31 (M1EN) (M2EN) 1.23 | · · | 1.22 (M3EN)
* (M1STP) 0.18 | · · 3.25 (M1DIR) (M1RX) 1.21 | · · 1.20 (M1DIAG)
* (M2DIR) 0.16 | · · | 3.26 (M2STP) (M2RX) 1.19 | · · | 1.18 (M2DIAG)
* (M3DIR) 0.15 | · · | 0.17 (M3STP) (M3RX) 0.28 | · · | 1.30 (M3DIAG)
* ----- -----
* EXP2 EXP1
*/
// M1 on Driver Expansion Module
#define E2_STEP_PIN EXPA2_05_PIN
#define E2_DIR_PIN EXPA2_06_PIN
#define E2_ENABLE_PIN EXPA2_04_PIN
#define E2_DIAG_PIN EXPA1_06_PIN
#define E2_CS_PIN EXPA1_05_PIN
#if HAS_TMC_UART
#define E2_SERIAL_TX_PIN EXPA1_05_PIN
#define E2_SERIAL_RX_PIN EXPA1_05_PIN
#endif
// M2 on Driver Expansion Module
#define E3_STEP_PIN EXPA2_08_PIN
#define E3_DIR_PIN EXPA2_07_PIN
#define E3_ENABLE_PIN EXPA1_03_PIN
#define E3_DIAG_PIN EXPA1_08_PIN
#define E3_CS_PIN EXPA1_07_PIN
#if HAS_TMC_UART
#define E3_SERIAL_TX_PIN EXPA1_07_PIN
#define E3_SERIAL_RX_PIN EXPA1_07_PIN
#endif
// M3 on Driver Expansion Module
#define E4_STEP_PIN EXPA2_10_PIN
#define E4_DIR_PIN EXPA2_09_PIN
#define E4_ENABLE_PIN EXPA1_04_PIN
#define E4_DIAG_PIN EXPA1_10_PIN
#define E4_CS_PIN EXPA1_09_PIN
#if HAS_TMC_UART
#define E4_SERIAL_TX_PIN EXPA1_09_PIN
#define E4_SERIAL_RX_PIN EXPA1_09_PIN
#endif
#endif // HAS_BTT_EXP_MOT

2
Marlin/src/pins/lpc1768/pins_MKS_SGEN_L.h
View file

@ -229,7 +229,7 @@
* _____ _____ * _____ _____
* (BEEPER) 1.31 | · · | 1.30 (BTN_ENC) (MISO) 0.8 | · · | 0.7 (SD_SCK) * (BEEPER) 1.31 | · · | 1.30 (BTN_ENC) (MISO) 0.8 | · · | 0.7 (SD_SCK)
* (LCD_EN) 0.18 | · · | 0.16 (LCD_RS) (BTN_EN1) 3.25 | · · | 0.28 (SD_CS2) * (LCD_EN) 0.18 | · · | 0.16 (LCD_RS) (BTN_EN1) 3.25 | · · | 0.28 (SD_CS2)
* (LCD_D4) 0.15 | · · | 0.17 (LCD_D5) (BTN_EN2) 3.26 | · · | 0.9 (SD_MOSI) * (LCD_D4) 0.15 | · · 0.17 (LCD_D5) (BTN_EN2) 3.26 | · · 0.9 (SD_MOSI)
* (LCD_D6) 1.0 | · · | 1.22 (LCD_D7) (SD_DETECT) 0.27 | · · | RST * (LCD_D6) 1.0 | · · | 1.22 (LCD_D7) (SD_DETECT) 0.27 | · · | RST
* GND | · · | 5V GND | · · | NC * GND | · · | 5V GND | · · | NC
* ----- ----- * ----- -----

2
Marlin/src/pins/lpc1769/pins_MKS_SGEN_L_V2.h
View file

@ -251,7 +251,7 @@
* _____ _____ * _____ _____
* (BEEPER) 1.31 | · · | 1.30 (BTN_ENC) (MISO) 0.8 | · · | 0.7 (SD_SCK) * (BEEPER) 1.31 | · · | 1.30 (BTN_ENC) (MISO) 0.8 | · · | 0.7 (SD_SCK)
* (LCD_EN) 0.18 | · · | 0.16 (LCD_RS) (BTN_EN1) 3.25 | · · | 0.28 (SD_CS2) * (LCD_EN) 0.18 | · · | 0.16 (LCD_RS) (BTN_EN1) 3.25 | · · | 0.28 (SD_CS2)
* (LCD_D4) 0.15 | · · | 0.17 (LCD_D5) (BTN_EN2) 3.26 | · · | 0.9 (SD_MOSI) * (LCD_D4) 0.15 | · · 0.17 (LCD_D5) (BTN_EN2) 3.26 | · · 0.9 (SD_MOSI)
* (LCD_D6) 1.0 | · · | 1.22 (LCD_D7) (SD_DETECT) 0.27 | · · | RST * (LCD_D6) 1.0 | · · | 1.22 (LCD_D7) (SD_DETECT) 0.27 | · · | RST
* GND | · · | 5V GND | · · | NC * GND | · · | 5V GND | · · | NC
* ----- ----- * ----- -----

2
Marlin/src/pins/lpc1769/pins_TH3D_EZBOARD.h
View file

@ -155,7 +155,7 @@
* _____ * _____
* 5V | · · | GND * 5V | · · | GND
* (LCD_EN) P0_18 | · · | P0_16 (LCD_RS) * (LCD_EN) P0_18 | · · | P0_16 (LCD_RS)
* (LCD_D4) P0_15 | · · | P3_25 (BTN_EN2) * (LCD_D4) P0_15 | · · P3_25 (BTN_EN2)
* (RESET) P2_11 | · · | P3_26 (BTN_EN1) * (RESET) P2_11 | · · | P3_26 (BTN_EN1)
* (BTN_ENC) P1_30 | · · | P1_31 (BEEPER) * (BTN_ENC) P1_30 | · · | P1_31 (BEEPER)
* ----- * -----

2
Marlin/src/pins/ramps/pins_FYSETC_F6_13.h
View file

@ -201,7 +201,7 @@
* ----- ----- * ----- -----
* 5V/D41 | · · | GND 5V | · · | GND * 5V/D41 | · · | GND 5V | · · | GND
* RESET | · · | D49 (SD_DETECT) (LCD_D7) D29 | · · | D27 (LCD_D6) * RESET | · · | D49 (SD_DETECT) (LCD_D7) D29 | · · | D27 (LCD_D6)
* (MOSI) D51 | · · | D33 (BTN_EN2) (LCD_D5) D25 | · · | D23 (LCD_D4) * (MOSI) D51 | · · D33 (BTN_EN2) (LCD_D5) D25 | · · D23 (LCD_D4)
* (SD_SS) D53 | · · | D31 (BTN_EN1) (LCD_RS) D16 | · · | D17 (LCD_EN) * (SD_SS) D53 | · · | D31 (BTN_EN1) (LCD_RS) D16 | · · | D17 (LCD_EN)
* (SCK) D52 | · · | D50 (MISO) (BTN_ENC) D35 | · · | D37 (BEEPER) * (SCK) D52 | · · | D50 (MISO) (BTN_ENC) D35 | · · | D37 (BEEPER)
* ----- ----- * ----- -----