Prusa MINI Firmware overview
pins_LONGER3D_LK.h
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1 /**
2  * Marlin 3D Printer Firmware
3  * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
4  *
5  * This program is free software: you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation, either version 3 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
17  *
18  */
19 #pragma once
20 
21 /**
22  * Longer3D LK1/LK2 & Alfawise U20/U30 (STM32F103VET6) board pin assignments
23  */
24 
25 #if !defined(__STM32F1__) && !defined(STM32F1xx)
26  #error "Oops! Select a STM32F1 board in 'Tools > Board.'"
27 #elif HOTENDS > 1 || E_STEPPERS > 1
28  #error "Longer3D board only supports 1 hotend / E-stepper. Comment out this line to continue."
29 #endif
30 
31 #define BOARD_INFO_NAME "Longer3D"
32 #define ALFAWISE_UX0 // Common to all Longer3D STM32F1 boards (used for Open drain mosfets)
33 
34 //#define DISABLE_DEBUG // We still want to debug with STLINK...
35 #define DISABLE_JTAG // We free the jtag pins (PA15) but keep STLINK
36  // Release PB4 (STEP_X_PIN) from JTAG NRST role.
37 //
38 // Limit Switches
39 //
40 #define X_MIN_PIN PC1 // pin 16
41 #define X_MAX_PIN PC0 // pin 15 (Filament sensor on Alfawise setup)
42 #define Y_MIN_PIN PC15 // pin 9
43 #define Y_MAX_PIN PC14 // pin 8 (Unused in stock Alfawise setup)
44 #define Z_MIN_PIN PE6 // pin 5 Standard Endstop or Z_Probe endstop function
45 #define Z_MAX_PIN PE5 // pin 4 (Unused in stock Alfawise setup)
46  // May be used for BLTouch Servo function on older variants (<= V08)
47 
48 //
49 // Filament Sensor
50 //
51 #ifndef FIL_RUNOUT_PIN
52  #define FIL_RUNOUT_PIN PC0 // XMAX plug on PCB used as filament runout sensor on Alfawise boards (inverting true)
53 #endif
54 
55 //
56 // Steppers
57 //
58 #define X_ENABLE_PIN PB5 // pin 91
59 #define X_STEP_PIN PB4 // pin 90
60 #define X_DIR_PIN PB3 // pin 89
61 
62 #define Y_ENABLE_PIN PB8 // pin 95
63 #define Y_STEP_PIN PB7 // pin 93
64 #define Y_DIR_PIN PB6 // pin 92
65 
66 #define Z_ENABLE_PIN PE1 // pin 98
67 #define Z_STEP_PIN PE0 // pin 97
68 #define Z_DIR_PIN PB9 // pin 96
69 
70 #define E0_ENABLE_PIN PE4 // pin 3
71 #define E0_STEP_PIN PE3 // pin 2
72 #define E0_DIR_PIN PE2 // pin 1
73 
74 //
75 // Temperature Sensors
76 //
77 #define TEMP_0_PIN PA0 // pin 23 (Nozzle 100K/3950 thermistor)
78 #define TEMP_BED_PIN PA1 // pin 24 (Hot Bed 100K/3950 thermistor)
79 
80 //
81 // Heaters / Fans
82 //
83 #define HEATER_0_PIN PD3 // pin 84 (Nozzle Heat Mosfet)
84 #define HEATER_BED_PIN PA8 // pin 67 (Hot Bed Mosfet)
85 
86 #define FAN_PIN PA15 // pin 77 (4cm Fan)
87 #define FAN_SOFT_PWM // Required to avoid issues with heating or STLink
88 #define FAN_MIN_PWM 35 // Fan will not start in 1-30 range
89 #define FAN_MAX_PWM 255
90 
91 //#define BEEPER_PIN PD13 // pin 60 (Servo PWM output 5V/GND on Board V0G+) made for BL-Touch sensor
92  // Can drive a PC Buzzer, if connected between PWM and 5V pins
93 
94 #define LED_PIN PC2 // pin 17
95 
96 //
97 // PWM for a servo probe
98 // Other servo devices are not supported on this board!
99 //
100 #if HAS_Z_SERVO_PROBE
101  #define SERVO0_PIN PD13 // Open drain PWM pin on the V0G (GND or floating 5V)
102  #define SERVO0_PWM_OD // Comment this if using PE5
103 
104  //#define SERVO0_PIN PE5 // Pulled up PWM pin on the V08 (3.3V or 0)
105  //#undef Z_MAX_PIN // Uncomment if using ZMAX connector (PE5)
106 #endif
107 
108 /**
109  * Note: Alfawise screens use various TFT controllers. Supported screens
110  * are based on the ILI9341, ILI9328 and ST7798V. Define init sequences for
111  * other screens in u8g_dev_tft_320x240_upscale_from_128x64.cpp
112  *
113  * If the screen stays white, disable 'LCD_RESET_PIN' to let the bootloader
114  * init the screen.
115  *
116  * Setting an 'LCD_RESET_PIN' may cause a flicker when entering the LCD menu
117  * because Marlin uses the reset as a failsafe to revive a glitchy LCD.
118  */
119 
120 #define LCD_RESET_PIN PC4 // pin 33
121 #define LCD_BACKLIGHT_PIN PD12 // pin 59
122 #define FSMC_CS_PIN PD7 // pin 88 = FSMC_NE1
123 #define FSMC_RS_PIN PD11 // pin 58 A16 Register. Only one address needed
124 
125 #define LCD_USE_DMA_FSMC // Use DMA transfers to send data to the TFT
126 #define FSMC_DMA_DEV DMA2
127 #define FSMC_DMA_CHANNEL DMA_CH5
128 
129 #define DOGLCD_MOSI -1 // Prevent auto-define by Conditionals_post.h
130 #define DOGLCD_SCK -1
131 
132 /**
133  * Note: Alfawise U20/U30 boards DON'T use SPI2, as the hardware designer
134  * mixed up MOSI and MISO pins. SPI is managed in SW, and needs pins
135  * declared below.
136  */
137 #if ENABLED(TOUCH_BUTTONS)
138  #define TOUCH_CS_PIN PB12 // pin 51 SPI2_NSS
139  #define TOUCH_SCK_PIN PB13 // pin 52
140  #define TOUCH_MOSI_PIN PB14 // pin 53
141  #define TOUCH_MISO_PIN PB15 // pin 54
142  #define TOUCH_INT_PIN PC6 // pin 63 (PenIRQ coming from ADS7843)
143 #endif
144 
145 //
146 // Persistent Storage
147 // If no option is selected below the SD Card will be used
148 //
149 //#define SPI_EEPROM
150 #define FLASH_EEPROM_EMULATION
151 
152 #undef E2END
153 #if ENABLED(SPI_EEPROM)
154  // SPI1 EEPROM Winbond W25Q64 (8MB/64Mbits)
155  #define SPI_CHAN_EEPROM1 1
156  #define SPI_EEPROM1_CS PC5 // pin 34
157  #define EEPROM_SCK BOARD_SPI1_SCK_PIN // PA5 pin 30
158  #define EEPROM_MISO BOARD_SPI1_MISO_PIN // PA6 pin 31
159  #define EEPROM_MOSI BOARD_SPI1_MOSI_PIN // PA7 pin 32
160  #define EEPROM_PAGE_SIZE 0x1000U // 4KB (from datasheet)
161  #define E2END ((16 * EEPROM_PAGE_SIZE)-1) // Limit to 64KB for now...
162 #elif ENABLED(FLASH_EEPROM_EMULATION)
163  // SoC Flash (framework-arduinoststm32-maple/STM32F1/libraries/EEPROM/EEPROM.h)
164  #define EEPROM_START_ADDRESS (0x8000000UL + (512 * 1024) - 2 * EEPROM_PAGE_SIZE)
165  #define EEPROM_PAGE_SIZE (0x800U) // 2KB, but will use 2x more (4KB)
166  #define E2END (EEPROM_PAGE_SIZE - 1)
167 #else
168  #define E2END (0x7FFU) // On SD, Limit to 2KB, require this amount of RAM
169 #endif