You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
406 lines
14 KiB
406 lines
14 KiB
/*
|
|
|
|
u8x8_d_st7920.c
|
|
|
|
Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
|
|
|
|
Copyright (c) 2016, olikraus@gmail.com
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without modification,
|
|
are permitted provided that the following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above copyright notice, this list
|
|
of conditions and the following disclaimer.
|
|
|
|
* Redistributions in binary form must reproduce the above copyright notice, this
|
|
list of conditions and the following disclaimer in the documentation and/or other
|
|
materials provided with the distribution.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
|
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
|
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
|
|
The ST7920 controller does not support hardware graphics flip.
|
|
Contrast adjustment is done by an external resistor --> no support for contrast adjustment
|
|
|
|
|
|
*/
|
|
#include "u8x8.h"
|
|
|
|
|
|
|
|
static const uint8_t u8x8_d_st7920_init_seq[] = {
|
|
|
|
U8X8_DLY(100),
|
|
U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
|
|
U8X8_DLY(10),
|
|
|
|
U8X8_C(0x038), /* 8 Bit interface (DL=1), basic instruction set (RE=0) */
|
|
U8X8_C(0x008), /* display on, cursor & blink off; 0x08: all off */
|
|
U8X8_C(0x006), /* Entry mode: Cursor move to right ,DDRAM address counter (AC) plus 1, no shift */
|
|
U8X8_C(0x002), /* disable scroll, enable CGRAM adress */
|
|
U8X8_C(0x001), /* clear RAM, needs 1.6 ms */
|
|
U8X8_DLY(4), /* delay 2ms */
|
|
|
|
|
|
U8X8_END_TRANSFER(), /* disable chip */
|
|
U8X8_END() /* end of sequence */
|
|
};
|
|
|
|
static const uint8_t u8x8_d_st7920_powersave0_seq[] = {
|
|
U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
|
|
U8X8_C(0x038), /* 8 Bit interface (DL=1), basic instruction set (RE=0) */
|
|
U8X8_C(0x00c), /* display on, cursor & blink off */
|
|
U8X8_END_TRANSFER(), /* disable chip */
|
|
U8X8_END() /* end of sequence */
|
|
};
|
|
|
|
static const uint8_t u8x8_d_st7920_powersave1_seq[] = {
|
|
U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
|
|
U8X8_C(0x038), /* 8 Bit interface (DL=1), basic instruction set (RE=0) */
|
|
U8X8_C(0x008), /* display off */
|
|
U8X8_C(0x034), /* 8 Bit interface (DL=1), extended instruction set (RE=1) */
|
|
U8X8_C(0x001), /* Standby mode */
|
|
|
|
U8X8_END_TRANSFER(), /* disable chip */
|
|
U8X8_END() /* end of sequence */
|
|
};
|
|
|
|
|
|
uint8_t u8x8_d_st7920_common(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
|
|
{
|
|
uint8_t x, y, c, i;
|
|
uint8_t *ptr;
|
|
switch(msg)
|
|
{
|
|
/* U8X8_MSG_DISPLAY_SETUP_MEMORY is handled by the calling function */
|
|
/*
|
|
case U8X8_MSG_DISPLAY_SETUP_MEMORY:
|
|
break;
|
|
*/
|
|
case U8X8_MSG_DISPLAY_INIT:
|
|
u8x8_d_helper_display_init(u8x8);
|
|
u8x8_cad_SendSequence(u8x8, u8x8_d_st7920_init_seq);
|
|
break;
|
|
case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
|
|
if ( arg_int == 0 )
|
|
u8x8_cad_SendSequence(u8x8, u8x8_d_st7920_powersave0_seq);
|
|
else
|
|
u8x8_cad_SendSequence(u8x8, u8x8_d_st7920_powersave1_seq);
|
|
break;
|
|
case U8X8_MSG_DISPLAY_DRAW_TILE:
|
|
y = (((u8x8_tile_t *)arg_ptr)->y_pos);
|
|
y*=8;
|
|
x = ((u8x8_tile_t *)arg_ptr)->x_pos;
|
|
x /= 2; /* not sure whether this is a clever idea, problem is, the ST7920 can address only every second tile */
|
|
|
|
if ( y >= 32 ) /* this is the adjustment for 128x64 displays */
|
|
{
|
|
y-=32;
|
|
x+=8;
|
|
}
|
|
|
|
u8x8_cad_StartTransfer(u8x8);
|
|
|
|
|
|
/*
|
|
Tile structure is reused here for the ST7920, however u8x8 is not supported
|
|
tile_ptr points to data which has cnt*8 bytes (same as SSD1306 tiles)
|
|
Buffer is expected to have 8 lines of code fitting to the ST7920 internal memory
|
|
"cnt" includes the number of horizontal bytes. width is equal to cnt*8
|
|
Also important: Width must be a multiple of 16 (ST7920 requirement), so cnt must be even.
|
|
|
|
TODO: Consider arg_int, however arg_int is not used by u8g2
|
|
*/
|
|
c = ((u8x8_tile_t *)arg_ptr)->cnt; /* number of tiles */
|
|
ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr; /* data ptr to the tiles */
|
|
/* The following byte is sent to allow the ST7920 to sync up with the data */
|
|
/* it solves some issues with garbage data */
|
|
u8x8_cad_SendCmd(u8x8, 0x03e ); /* enable extended mode */
|
|
u8x8_cad_SendCmd(u8x8, 0x03e ); /* enable extended mode, issue 487 */
|
|
for( i = 0; i < 8; i++ )
|
|
{
|
|
//u8x8_cad_SendCmd(u8x8, 0x03e ); /* enable extended mode */
|
|
u8x8_cad_SendCmd(u8x8, 0x080 | (y+i) ); /* y pos */
|
|
u8x8_cad_SendCmd(u8x8, 0x080 | x ); /* set x pos */
|
|
c = ((u8x8_tile_t *)arg_ptr)->cnt; /* number of tiles */
|
|
|
|
//u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, 200, NULL); /* extra dely required */
|
|
u8x8_cad_SendData(u8x8, c, ptr); /* note: SendData can not handle more than 255 bytes, send one line of data */
|
|
ptr += c;
|
|
//u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, 200, NULL); /* extra dely required */
|
|
}
|
|
|
|
u8x8_cad_EndTransfer(u8x8);
|
|
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*=== 128x32 === */
|
|
/* https://github.com/olikraus/u8g2/issues/2241 */
|
|
|
|
static const u8x8_display_info_t u8x8_st7920_128x32_display_info =
|
|
{
|
|
/* chip_enable_level = */ 1,
|
|
/* chip_disable_level = */ 0,
|
|
|
|
/* post_chip_enable_wait_ns = */ 5,
|
|
/* pre_chip_disable_wait_ns = */ 5,
|
|
/* reset_pulse_width_ms = */ 1,
|
|
/* post_reset_wait_ms = */ 6,
|
|
/* sda_setup_time_ns = */ 20,
|
|
/* sck_pulse_width_ns = */ 140, /* datasheet ST7920 */
|
|
/* sck_clock_hz = */ 1000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */
|
|
/* spi_mode = */ 3, /* old: sck_takeover_edge, new: active high (bit 1), rising edge (bit 0), 18 Aug 16: changed from 1 to 3 which works for 101 */
|
|
/* Arduino mode 3: aktive low clock, but use rising edge */
|
|
/* i2c_bus_clock_100kHz = */ 4,
|
|
/* data_setup_time_ns = */ 30,
|
|
/* write_pulse_width_ns = */ 40,
|
|
/* tile_width = */ 16,
|
|
/* tile_height = */ 4,
|
|
/* default_x_offset = */ 0,
|
|
/* flipmode_x_offset = */ 0,
|
|
/* pixel_width = */ 128,
|
|
/* pixel_height = */ 32
|
|
};
|
|
|
|
|
|
uint8_t u8x8_d_st7920_128x32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
|
|
{
|
|
switch(msg)
|
|
{
|
|
case U8X8_MSG_DISPLAY_SETUP_MEMORY:
|
|
u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7920_128x32_display_info);
|
|
break;
|
|
default:
|
|
return u8x8_d_st7920_common(u8x8, msg, arg_int, arg_ptr);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*=== 144x32 === */
|
|
/* https://github.com/olikraus/u8g2/issues/209 */
|
|
|
|
static const u8x8_display_info_t u8x8_st7920_144x32_display_info =
|
|
{
|
|
/* chip_enable_level = */ 1,
|
|
/* chip_disable_level = */ 0,
|
|
|
|
/* post_chip_enable_wait_ns = */ 5,
|
|
/* pre_chip_disable_wait_ns = */ 5,
|
|
/* reset_pulse_width_ms = */ 1,
|
|
/* post_reset_wait_ms = */ 6,
|
|
/* sda_setup_time_ns = */ 20,
|
|
/* sck_pulse_width_ns = */ 140, /* datasheet ST7920 */
|
|
/* sck_clock_hz = */ 1000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */
|
|
/* spi_mode = */ 3, /* old: sck_takeover_edge, new: active high (bit 1), rising edge (bit 0), 18 Aug 16: changed from 1 to 3 which works for 101 */
|
|
/* Arduino mode 3: aktive low clock, but use rising edge */
|
|
/* i2c_bus_clock_100kHz = */ 4,
|
|
/* data_setup_time_ns = */ 30,
|
|
/* write_pulse_width_ns = */ 40,
|
|
/* tile_width = */ 18,
|
|
/* tile_height = */ 4,
|
|
/* default_x_offset = */ 0,
|
|
/* flipmode_x_offset = */ 0,
|
|
/* pixel_width = */ 144,
|
|
/* pixel_height = */ 32
|
|
};
|
|
|
|
|
|
uint8_t u8x8_d_st7920_144x32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
|
|
{
|
|
switch(msg)
|
|
{
|
|
case U8X8_MSG_DISPLAY_SETUP_MEMORY:
|
|
u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7920_144x32_display_info);
|
|
break;
|
|
default:
|
|
return u8x8_d_st7920_common(u8x8, msg, arg_int, arg_ptr);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*=== 160x32 === */
|
|
/* https://github.com/olikraus/u8g2/issues/1873, POWERTIP PG-16032LRU-BWH-H-P2 */
|
|
|
|
static const u8x8_display_info_t u8x8_st7920_160x32_display_info =
|
|
{
|
|
/* chip_enable_level = */ 1,
|
|
/* chip_disable_level = */ 0,
|
|
|
|
/* post_chip_enable_wait_ns = */ 5,
|
|
/* pre_chip_disable_wait_ns = */ 5,
|
|
/* reset_pulse_width_ms = */ 1,
|
|
/* post_reset_wait_ms = */ 6,
|
|
/* sda_setup_time_ns = */ 20,
|
|
/* sck_pulse_width_ns = */ 140, /* datasheet ST7920 */
|
|
/* sck_clock_hz = */ 1000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */
|
|
/* spi_mode = */ 3, /* old: sck_takeover_edge, new: active high (bit 1), rising edge (bit 0), 18 Aug 16: changed from 1 to 3 which works for 101 */
|
|
/* Arduino mode 3: aktive low clock, but use rising edge */
|
|
/* i2c_bus_clock_100kHz = */ 4,
|
|
/* data_setup_time_ns = */ 30,
|
|
/* write_pulse_width_ns = */ 40,
|
|
/* tile_width = */ 20,
|
|
/* tile_height = */ 4,
|
|
/* default_x_offset = */ 0,
|
|
/* flipmode_x_offset = */ 0,
|
|
/* pixel_width = */ 160,
|
|
/* pixel_height = */ 32
|
|
};
|
|
|
|
uint8_t u8x8_d_st7920_160x32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
|
|
{
|
|
switch(msg)
|
|
{
|
|
case U8X8_MSG_DISPLAY_SETUP_MEMORY:
|
|
u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7920_160x32_display_info);
|
|
break;
|
|
default:
|
|
return u8x8_d_st7920_common(u8x8, msg, arg_int, arg_ptr);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*=== 192x32 === */
|
|
|
|
static const u8x8_display_info_t u8x8_st7920_192x32_display_info =
|
|
{
|
|
/* chip_enable_level = */ 1,
|
|
/* chip_disable_level = */ 0,
|
|
|
|
/* post_chip_enable_wait_ns = */ 5,
|
|
/* pre_chip_disable_wait_ns = */ 5,
|
|
/* reset_pulse_width_ms = */ 1,
|
|
/* post_reset_wait_ms = */ 6,
|
|
/* sda_setup_time_ns = */ 20,
|
|
/* sck_pulse_width_ns = */ 140, /* datasheet ST7920 */
|
|
/* sck_clock_hz = */ 1000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */
|
|
/* spi_mode = */ 3, /* old: sck_takeover_edge, new: active high (bit 1), rising edge (bit 0), 18 Aug 16: changed from 1 to 3 which works for 101 */
|
|
/* Arduino mode 3: aktive low clock, but use rising edge */
|
|
/* i2c_bus_clock_100kHz = */ 4,
|
|
/* data_setup_time_ns = */ 30,
|
|
/* write_pulse_width_ns = */ 40,
|
|
/* tile_width = */ 24,
|
|
/* tile_height = */ 4,
|
|
/* default_x_offset = */ 0,
|
|
/* flipmode_x_offset = */ 0,
|
|
/* pixel_width = */ 192,
|
|
/* pixel_height = */ 32
|
|
};
|
|
|
|
|
|
uint8_t u8x8_d_st7920_192x32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
|
|
{
|
|
switch(msg)
|
|
{
|
|
case U8X8_MSG_DISPLAY_SETUP_MEMORY:
|
|
u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7920_192x32_display_info);
|
|
break;
|
|
default:
|
|
return u8x8_d_st7920_common(u8x8, msg, arg_int, arg_ptr);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*=== 128x64 === */
|
|
|
|
static const u8x8_display_info_t u8x8_st7920_128x64_display_info =
|
|
{
|
|
/* chip_enable_level = */ 1,
|
|
/* chip_disable_level = */ 0,
|
|
|
|
/* post_chip_enable_wait_ns = */ 5,
|
|
/* pre_chip_disable_wait_ns = */ 5,
|
|
/* reset_pulse_width_ms = */ 1,
|
|
/* post_reset_wait_ms = */ 6,
|
|
/* sda_setup_time_ns = */ 20,
|
|
/* sck_pulse_width_ns = */ 140, /* datasheet ST7920 */
|
|
/* sck_clock_hz = */ 1000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */
|
|
/* ST7920+Due work with 1MHz but not with 2MHz, ST7920+Uno works with 2MHz */
|
|
/* spi_mode = */ 3, /* active high, rising edge, 18 Aug 16: changed from 1 to 3 which works for 101 */
|
|
/* in theory mode 3 should be correct */
|
|
/* i2c_bus_clock_100kHz = */ 4,
|
|
/* data_setup_time_ns = */ 30,
|
|
/* write_pulse_width_ns = */ 40,
|
|
/* tile_width = */ 16,
|
|
/* tile_height = */ 8,
|
|
/* default_x_offset = */ 0,
|
|
/* flipmode_x_offset = */ 0,
|
|
/* pixel_width = */ 128,
|
|
/* pixel_height = */ 64
|
|
};
|
|
|
|
uint8_t u8x8_d_st7920_128x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
|
|
{
|
|
switch(msg)
|
|
{
|
|
case U8X8_MSG_DISPLAY_SETUP_MEMORY:
|
|
u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7920_128x64_display_info);
|
|
break;
|
|
default:
|
|
return u8x8_d_st7920_common(u8x8, msg, arg_int, arg_ptr);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*=== 256x32 === */
|
|
/* https://github.com/olikraus/u8g2/issues/1593 */
|
|
|
|
static const u8x8_display_info_t u8x8_st7920_256x32_display_info =
|
|
{
|
|
/* chip_enable_level = */ 1,
|
|
/* chip_disable_level = */ 0,
|
|
|
|
/* post_chip_enable_wait_ns = */ 5,
|
|
/* pre_chip_disable_wait_ns = */ 5,
|
|
/* reset_pulse_width_ms = */ 1,
|
|
/* post_reset_wait_ms = */ 6,
|
|
/* sda_setup_time_ns = */ 20,
|
|
/* sck_pulse_width_ns = */ 140, /* datasheet ST7920 */
|
|
/* sck_clock_hz = */ 1000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */
|
|
/* ST7920+Due work with 1MHz but not with 2MHz, ST7920+Uno works with 2MHz */
|
|
/* spi_mode = */ 3, /* active high, rising edge, 18 Aug 16: changed from 1 to 3 which works for 101 */
|
|
/* in theory mode 3 should be correct */
|
|
/* i2c_bus_clock_100kHz = */ 4,
|
|
/* data_setup_time_ns = */ 30,
|
|
/* write_pulse_width_ns = */ 40,
|
|
/* tile_width = */ 32,
|
|
/* tile_height = */ 4,
|
|
/* default_x_offset = */ 0,
|
|
/* flipmode_x_offset = */ 0,
|
|
/* pixel_width = */ 256,
|
|
/* pixel_height = */ 32
|
|
};
|
|
|
|
uint8_t u8x8_d_st7920_256x32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
|
|
{
|
|
switch(msg)
|
|
{
|
|
case U8X8_MSG_DISPLAY_SETUP_MEMORY:
|
|
u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7920_256x32_display_info);
|
|
break;
|
|
default:
|
|
return u8x8_d_st7920_common(u8x8, msg, arg_int, arg_ptr);
|
|
}
|
|
return 1;
|
|
} |