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/* | ||
u8x8_d_pcd8544_84x48.c (so called "Nokia 5110" displays) | ||
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. | ||
*/ | ||
#include "u8x8.h" | ||
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static const uint8_t u8x8_d_pcd8544_84x48_init_seq[] = { | ||
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U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ | ||
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U8X8_C(0x021), /* activate chip (PD=0), horizontal increment (V=0), enter extended command set (H=1) */ | ||
U8X8_C(0x006), /* temp. control: b10 = 2 */ | ||
U8X8_C(0x013), /* bias system 1:48 */ | ||
U8X8_C(0x0c0), /* medium Vop */ | ||
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U8X8_C(0x020), /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */ | ||
U8X8_C(0x008), /* blank */ | ||
U8X8_C(0x024), /* power down (PD=1), horizontal increment (V=0), enter normal command set (H=0) */ | ||
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U8X8_END_TRANSFER(), /* disable chip */ | ||
U8X8_END() /* end of sequence */ | ||
}; | ||
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static const uint8_t u8x8_d_pcd8544_84x48_powersave0_seq[] = { | ||
U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ | ||
U8X8_C(0x020), /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */ | ||
U8X8_C(0x00c), /* display on */ | ||
U8X8_END_TRANSFER(), /* disable chip */ | ||
U8X8_END() /* end of sequence */ | ||
}; | ||
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static const uint8_t u8x8_d_pcd8544_84x48_powersave1_seq[] = { | ||
U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ | ||
U8X8_C(0x020), /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */ | ||
U8X8_C(0x008), /* blank */ | ||
U8X8_C(0x024), /* power down (PD=1), horizontal increment (V=0), enter normal command set (H=0) */ | ||
U8X8_END_TRANSFER(), /* disable chip */ | ||
U8X8_END() /* end of sequence */ | ||
}; | ||
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static const u8x8_display_info_t u8x8_pcd8544_84x48_display_info = | ||
{ | ||
/* chip_enable_level = */ 0, | ||
/* chip_disable_level = */ 1, | ||
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/* post_chip_enable_wait_ns = */ 5, | ||
/* pre_chip_disable_wait_ns = */ 5, | ||
/* reset_pulse_width_ms = */ 2, | ||
/* post_reset_wait_ms = */ 2, | ||
/* sda_setup_time_ns = */ 12, | ||
/* sck_pulse_width_ns = */ 75, /* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */ | ||
/* sck_clock_hz = */ 4000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */ | ||
/* spi_mode = */ 0, /* active high, rising edge */ | ||
/* i2c_bus_clock_100kHz = */ 4, | ||
/* data_setup_time_ns = */ 30, | ||
/* write_pulse_width_ns = */ 40, | ||
/* tile_width = */ 11, /* width of 11*8=88 pixel */ | ||
/* tile_hight = */ 6, | ||
/* default_x_offset = */ 0, | ||
/* flipmode_x_offset = */ 0, | ||
/* pixel_width = */ 84, | ||
/* pixel_height = */ 48 | ||
}; | ||
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uint8_t u8x8_d_pcd8544_84x48(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) | ||
{ | ||
uint8_t x, c; | ||
uint8_t *ptr; | ||
switch(msg) | ||
{ | ||
case U8X8_MSG_DISPLAY_SETUP_MEMORY: | ||
u8x8_d_helper_display_setup_memory(u8x8, &u8x8_pcd8544_84x48_display_info); | ||
break; | ||
case U8X8_MSG_DISPLAY_INIT: | ||
u8x8_d_helper_display_init(u8x8); | ||
u8x8_cad_SendSequence(u8x8, u8x8_d_pcd8544_84x48_init_seq); | ||
break; | ||
case U8X8_MSG_DISPLAY_SET_POWER_SAVE: | ||
if ( arg_int == 0 ) | ||
u8x8_cad_SendSequence(u8x8, u8x8_d_pcd8544_84x48_powersave0_seq); | ||
else | ||
u8x8_cad_SendSequence(u8x8, u8x8_d_pcd8544_84x48_powersave1_seq); | ||
break; | ||
// case U8X8_MSG_DISPLAY_SET_FLIP_MODE: | ||
// break; NOT SUPPORTED | ||
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#ifdef U8X8_WITH_SET_CONTRAST | ||
case U8X8_MSG_DISPLAY_SET_CONTRAST: | ||
u8x8_cad_StartTransfer(u8x8); | ||
u8x8_cad_SendCmd(u8x8, 0x021 ); /* command mode, extended function set */ | ||
u8x8_cad_SendCmd(u8x8, 0x080 | (arg_int >> 1) ); | ||
u8x8_cad_EndTransfer(u8x8); | ||
break; | ||
#endif | ||
case U8X8_MSG_DISPLAY_DRAW_TILE: | ||
u8x8_cad_StartTransfer(u8x8); | ||
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x = ((u8x8_tile_t *)arg_ptr)->x_pos; | ||
x *= 8; | ||
x += u8x8->x_offset; | ||
u8x8_cad_SendCmd(u8x8, 0x020 ); /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */ | ||
u8x8_cad_SendCmd(u8x8, 0x080 | (x) ); /* set X address */ | ||
u8x8_cad_SendCmd(u8x8, 0x040 | (((u8x8_tile_t *)arg_ptr)->y_pos) ); /* set Y address */ | ||
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ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr; | ||
c = ((u8x8_tile_t *)arg_ptr)->cnt; | ||
c *= 8; | ||
do | ||
{ | ||
if ( c + x > 84u ) | ||
{ | ||
if ( x >= 84u ) | ||
break; | ||
c = 84u; | ||
c -= x; | ||
} | ||
u8x8_cad_SendData(u8x8, c, ptr); /* note: SendData can not handle more than 255 bytes */ | ||
x += c; | ||
arg_int--; | ||
} while( arg_int > 0 ); | ||
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u8x8_cad_EndTransfer(u8x8); | ||
break; | ||
default: | ||
return 0; | ||
} | ||
return 1; | ||
} | ||
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