melch/Marlin
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
b4076883cc
Marlin/Marlin/ultralcd_st7920_u8glib_rrd.h

259 lines
7.5 KiB
C++
Raw Blame History

/**
* 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 "Marlin.h"
#if ENABLED(U8GLIB_ST7920)
#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
#include <U8glib.h>
//set optimization so ARDUINO optimizes this file
#pragma GCC optimize (3)
#define DELAY_0_NOP ;
#define DELAY_1_NOP __asm__("nop\n\t");
#define DELAY_2_NOP __asm__("nop\n\t" "nop\n\t");
#define DELAY_3_NOP __asm__("nop\n\t" "nop\n\t" "nop\n\t");
#define DELAY_4_NOP __asm__("nop\n\t" "nop\n\t" "nop\n\t" "nop\n\t");
// If you want you can define your own set of delays in Configuration.h
//#define ST7920_DELAY_1 DELAY_0_NOP
//#define ST7920_DELAY_2 DELAY_0_NOP
//#define ST7920_DELAY_3 DELAY_0_NOP
#if F_CPU >= 20000000
#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_0_NOP
#endif
#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_0_NOP
#endif
#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_1_NOP
#endif
#elif (MOTHERBOARD == BOARD_3DRAG) || (MOTHERBOARD == BOARD_K8200)
#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_0_NOP
#endif
#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_3_NOP
#endif
#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_0_NOP
#endif
#elif (MOTHERBOARD == BOARD_MINIRAMBO)
#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_0_NOP
#endif
#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_4_NOP
#endif
#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_0_NOP
#endif
#elif (MOTHERBOARD == BOARD_RAMBO)
#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_0_NOP
#endif
#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_0_NOP
#endif
#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_0_NOP
#endif
#elif F_CPU == 16000000
#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_0_NOP
#endif
#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_0_NOP
#endif
#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_1_NOP
#endif
#else
#error "No valid condition for delays in 'ultralcd_st7920_u8glib_rrd.h'"
#endif
static void ST7920_SWSPI_SND_8BIT(uint8_t val) {
WRITE(ST7920_CLK_PIN,0);
ST7920_DELAY_1
WRITE(ST7920_DAT_PIN,val&0x80);
ST7920_DELAY_2
WRITE(ST7920_CLK_PIN,1);
val<<=1;
ST7920_DELAY_3
WRITE(ST7920_CLK_PIN,0);
ST7920_DELAY_1
WRITE(ST7920_DAT_PIN,val&0x80);
ST7920_DELAY_2
WRITE(ST7920_CLK_PIN,1);
val<<=1;
ST7920_DELAY_3
WRITE(ST7920_CLK_PIN,0);
ST7920_DELAY_1
WRITE(ST7920_DAT_PIN,val&0x80);
ST7920_DELAY_2
WRITE(ST7920_CLK_PIN,1);
val<<=1;
ST7920_DELAY_3
WRITE(ST7920_CLK_PIN,0);
ST7920_DELAY_1
WRITE(ST7920_DAT_PIN,val&0x80);
ST7920_DELAY_2
WRITE(ST7920_CLK_PIN,1);
val<<=1;
ST7920_DELAY_3
WRITE(ST7920_CLK_PIN,0);
ST7920_DELAY_1
WRITE(ST7920_DAT_PIN,val&0x80);
ST7920_DELAY_2
WRITE(ST7920_CLK_PIN,1);
val<<=1;
ST7920_DELAY_3
WRITE(ST7920_CLK_PIN,0);
ST7920_DELAY_1
WRITE(ST7920_DAT_PIN,val&0x80);
ST7920_DELAY_2
WRITE(ST7920_CLK_PIN,1);
val<<=1;
ST7920_DELAY_3
WRITE(ST7920_CLK_PIN,0);
ST7920_DELAY_1
WRITE(ST7920_DAT_PIN,val&0x80);
ST7920_DELAY_2
WRITE(ST7920_CLK_PIN,1);
val<<=1;
ST7920_DELAY_3
WRITE(ST7920_CLK_PIN,0);
ST7920_DELAY_1
WRITE(ST7920_DAT_PIN,val&0x80);
ST7920_DELAY_2
WRITE(ST7920_CLK_PIN,1);
}
#define ST7920_CS() {WRITE(ST7920_CS_PIN,1);u8g_10MicroDelay();}
#define ST7920_NCS() {WRITE(ST7920_CS_PIN,0);}
#define ST7920_SET_CMD() {ST7920_SWSPI_SND_8BIT(0xf8);u8g_10MicroDelay();}
#define ST7920_SET_DAT() {ST7920_SWSPI_SND_8BIT(0xfa);u8g_10MicroDelay();}
#define ST7920_WRITE_BYTE(a) {ST7920_SWSPI_SND_8BIT((uint8_t)((a)&0xf0u));ST7920_SWSPI_SND_8BIT((uint8_t)((a)<<4u));u8g_10MicroDelay();}
#define ST7920_WRITE_BYTES(p,l) {uint8_t i;for(i=0;i<l;i++){ST7920_SWSPI_SND_8BIT(*p&0xf0);ST7920_SWSPI_SND_8BIT(*p<<4);p++;}u8g_10MicroDelay();}
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(0x08); //display off, cursor+blink off
ST7920_WRITE_BYTE(0x01); //clear CGRAM ram
u8g_Delay(15); //delay for CGRAM clear
ST7920_WRITE_BYTE(0x3E); //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); }
};
#pragma GCC reset_options
#endif //U8GLIB_ST7920
#endif //ULCDST7920_H
Reference in New Issue View Git Blame Copy Permalink