Subversion Repositories Tronxy-X3A-Marlin

/**

 * Marlin 3D Printer Firmware

 * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]

 *

 * Based on Sprinter and grbl.

 * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 *

 */

#ifndef ULCDST7920_H

#define ULCDST7920_H

#include <U8glib.h>

#include "delay.h"

#define ST7920_CLK_PIN  LCD_PINS_D4

#define ST7920_DAT_PIN  LCD_PINS_ENABLE

#define ST7920_CS_PIN   LCD_PINS_RS

//#define PAGE_HEIGHT 8   //128 byte framebuffer

#define PAGE_HEIGHT 16  //256 byte framebuffer

//#define PAGE_HEIGHT 32  //512 byte framebuffer

#define LCD_PIXEL_WIDTH 128

#define LCD_PIXEL_HEIGHT 64

//set optimization so ARDUINO optimizes this file

#pragma GCC optimize (3)

// If you want you can define your own set of delays in Configuration.h

//#define ST7920_DELAY_1 DELAY_NS(0)

//#define ST7920_DELAY_2 DELAY_NS(0)

//#define ST7920_DELAY_3 DELAY_NS(0)

#if F_CPU >= 20000000

  #define CPU_ST7920_DELAY_1 DELAY_NS(0)

  #define CPU_ST7920_DELAY_2 DELAY_NS(0)

  #define CPU_ST7920_DELAY_3 DELAY_NS(50)

#elif MB(3DRAG) || MB(K8200) || MB(K8400) || MB(SILVER_GATE)

  #define CPU_ST7920_DELAY_1 DELAY_NS(0)

  #define CPU_ST7920_DELAY_2 DELAY_NS(188)

  #define CPU_ST7920_DELAY_3 DELAY_NS(0)

#elif MB(MINIRAMBO) || MB(EINSY_RAMBO) || MB(EINSY_RETRO)

  #define CPU_ST7920_DELAY_1 DELAY_NS(0)

  #define CPU_ST7920_DELAY_2 DELAY_NS(250)

  #define CPU_ST7920_DELAY_3 DELAY_NS(0)

#elif MB(RAMBO)

  #define CPU_ST7920_DELAY_1 DELAY_NS(0)

  #define CPU_ST7920_DELAY_2 DELAY_NS(0)

  #define CPU_ST7920_DELAY_3 DELAY_NS(0)

#elif MB(BQ_ZUM_MEGA_3D)

  #define CPU_ST7920_DELAY_1 DELAY_NS(0)

  #define CPU_ST7920_DELAY_2 DELAY_NS(0)

  #define CPU_ST7920_DELAY_3 DELAY_NS(189)

#elif F_CPU == 16000000

  #define CPU_ST7920_DELAY_1 DELAY_NS(0)

  #define CPU_ST7920_DELAY_2 DELAY_NS(0)

  #define CPU_ST7920_DELAY_3 DELAY_NS(63)

#else

  #error "No valid condition for delays in 'ultralcd_st7920_u8glib_rrd.h'"

#endif

#ifndef ST7920_DELAY_1

  #define ST7920_DELAY_1 CPU_ST7920_DELAY_1

#endif

#ifndef ST7920_DELAY_2

  #define ST7920_DELAY_2 CPU_ST7920_DELAY_2

#endif

#ifndef ST7920_DELAY_3

  #define ST7920_DELAY_3 CPU_ST7920_DELAY_3

#endif

#define ST7920_SND_BIT \

  WRITE(ST7920_CLK_PIN, LOW);        ST7920_DELAY_1; \

  WRITE(ST7920_DAT_PIN, val & 0x80); ST7920_DELAY_2; \

  WRITE(ST7920_CLK_PIN, HIGH);       ST7920_DELAY_3; \

  val <<= 1

static void ST7920_SWSPI_SND_8BIT(uint8_t val) {

  ST7920_SND_BIT; // 1

  ST7920_SND_BIT; // 2

  ST7920_SND_BIT; // 3

  ST7920_SND_BIT; // 4

  ST7920_SND_BIT; // 5

  ST7920_SND_BIT; // 6

  ST7920_SND_BIT; // 7

  ST7920_SND_BIT; // 8

}

#if DOGM_SPI_DELAY_US > 0

  #define U8G_DELAY() DELAY_US(DOGM_SPI_DELAY_US)

#else

  #define U8G_DELAY() u8g_10MicroDelay()

#endif

#define ST7920_CS()              { WRITE(ST7920_CS_PIN,1); U8G_DELAY(); }

#define ST7920_NCS()             { WRITE(ST7920_CS_PIN,0); }

#define ST7920_SET_CMD()         { ST7920_SWSPI_SND_8BIT(0xF8); U8G_DELAY(); }

#define ST7920_SET_DAT()         { ST7920_SWSPI_SND_8BIT(0xFA); U8G_DELAY(); }

#define ST7920_WRITE_BYTE(a)     { ST7920_SWSPI_SND_8BIT((uint8_t)((a)&0xF0u)); ST7920_SWSPI_SND_8BIT((uint8_t)((a)<<4u)); U8G_DELAY(); }

#define ST7920_WRITE_BYTES(p,l)  { for (uint8_t i = l + 1; --i;) { ST7920_SWSPI_SND_8BIT(*p&0xF0); ST7920_SWSPI_SND_8BIT(*p<<4); p++; } U8G_DELAY(); }

uint8_t u8g_dev_rrd_st7920_128x64_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg) {

  uint8_t i, y;

  switch (msg) {

    case U8G_DEV_MSG_INIT: {

      OUT_WRITE(ST7920_CS_PIN, LOW);

      OUT_WRITE(ST7920_DAT_PIN, LOW);

      OUT_WRITE(ST7920_CLK_PIN, HIGH);

      ST7920_CS();

      u8g_Delay(120);                 //initial delay for boot up

      ST7920_SET_CMD();

      ST7920_WRITE_BYTE(0x20);       //non-extended mode

      ST7920_WRITE_BYTE(0x08);       //display off, cursor+blink off

      ST7920_WRITE_BYTE(0x01);       //clear DDRAM ram

      u8g_Delay(15);                    //delay for DDRAM clear

      ST7920_WRITE_BYTE(0x24);       //extended mode

      ST7920_WRITE_BYTE(0x26);       //extended mode + GDRAM active

      for (y = 0; y < (LCD_PIXEL_HEIGHT) / 2; y++) { //clear GDRAM

        ST7920_WRITE_BYTE(0x80 | y); //set y

        ST7920_WRITE_BYTE(0x80);     //set x = 0

        ST7920_SET_DAT();

        for (i = 0; i < 2 * (LCD_PIXEL_WIDTH) / 8; i++) //2x width clears both segments

          ST7920_WRITE_BYTE(0);

        ST7920_SET_CMD();

      }

      ST7920_WRITE_BYTE(0x0C); //display on, cursor+blink off

      ST7920_NCS();

    }

    break;

    case U8G_DEV_MSG_STOP: break;

    case U8G_DEV_MSG_PAGE_NEXT: {

      uint8_t* ptr;

      u8g_pb_t* pb = (u8g_pb_t*)(dev->dev_mem);

      y = pb->p.page_y0;

      ptr = (uint8_t*)pb->buf;

      ST7920_CS();

      for (i = 0; i < PAGE_HEIGHT; i ++) {

        ST7920_SET_CMD();

        if (y < 32) {

          ST7920_WRITE_BYTE(0x80 | y);       //y

          ST7920_WRITE_BYTE(0x80);           //x=0

        }

        else {

          ST7920_WRITE_BYTE(0x80 | (y - 32)); //y

          ST7920_WRITE_BYTE(0x80 | 8);       //x=64

        }

        ST7920_SET_DAT();

        ST7920_WRITE_BYTES(ptr, (LCD_PIXEL_WIDTH) / 8); //ptr is incremented inside of macro

        y++;

      }

      ST7920_NCS();

    }

    break;

  }

  #if PAGE_HEIGHT == 8

    return u8g_dev_pb8h1_base_fn(u8g, dev, msg, arg);

  #elif PAGE_HEIGHT == 16

    return u8g_dev_pb16h1_base_fn(u8g, dev, msg, arg);

  #else

    return u8g_dev_pb32h1_base_fn(u8g, dev, msg, arg);

  #endif

}

uint8_t   u8g_dev_st7920_128x64_rrd_buf[(LCD_PIXEL_WIDTH) * (PAGE_HEIGHT) / 8] U8G_NOCOMMON;

u8g_pb_t  u8g_dev_st7920_128x64_rrd_pb = {{PAGE_HEIGHT, LCD_PIXEL_HEIGHT, 0, 0, 0}, LCD_PIXEL_WIDTH, u8g_dev_st7920_128x64_rrd_buf};

u8g_dev_t u8g_dev_st7920_128x64_rrd_sw_spi = {u8g_dev_rrd_st7920_128x64_fn, &u8g_dev_st7920_128x64_rrd_pb, &u8g_com_null_fn};

class U8GLIB_ST7920_128X64_RRD : public U8GLIB {

 public:

  U8GLIB_ST7920_128X64_RRD(uint8_t dummy) : U8GLIB(&u8g_dev_st7920_128x64_rrd_sw_spi) { UNUSED(dummy); }

};

#if ENABLED(LIGHTWEIGHT_UI)

  // We have to include the code for the lightweight UI here

  // as it relies on macros that are only defined in this file.

  #include "status_screen_lite_ST7920_spi.h"

#endif

#pragma GCC reset_options

#endif // ULCDST7920_H