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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
- *
- */
- #pragma once
-
- // NOTE - the HAL version of the rrd device uses a generic ST7920 device. See the
- // file u8g_dev_st7920_128x64_HAL.cpp for the HAL version.
-
- #include "../../inc/MarlinConfig.h"
- #include "../../HAL/shared/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
-
- #include <U8glib-HAL.h>
-
- void ST7920_SWSPI_SND_8BIT(uint8_t val);
-
- #if DOGM_SPI_DELAY_US > 0
- #define U8G_DELAY() DELAY_US(DOGM_SPI_DELAY_US)
- #else
- #define U8G_DELAY() DELAY_US(10)
- #endif
-
- #define ST7920_CS() { WRITE(ST7920_CS_PIN, HIGH); U8G_DELAY(); }
- #define ST7920_NCS() { WRITE(ST7920_CS_PIN, LOW); }
- #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(); }
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