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abp1g20
pico-displayTemperature
Commits
c21dfb47
Commit
c21dfb47
authored
3 years ago
by
abp1g20
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/* vim: set ai et ts=4 sw=4: */
#include
"DEV_Config.h"
#include
"st7735.h"
#define DELAY 0x80
// based on Adafruit ST7735 library for Arduino
static
const
uint8_t
init_cmds1
[]
=
{
// Init for 7735R, part 1 (red or green tab)
15
,
// 15 commands in list:
ST7735_SWRESET
,
DELAY
,
// 1: Software reset, 0 args, w/delay
150
,
// 150 ms delay
ST7735_SLPOUT
,
DELAY
,
// 2: Out of sleep mode, 0 args, w/delay
255
,
// 500 ms delay
ST7735_FRMCTR1
,
3
,
// 3: Frame rate ctrl - normal mode, 3 args:
0x01
,
0x2C
,
0x2D
,
// Rate = fosc/(1x2+40) * (LINE+2C+2D)
ST7735_FRMCTR2
,
3
,
// 4: Frame rate control - idle mode, 3 args:
0x01
,
0x2C
,
0x2D
,
// Rate = fosc/(1x2+40) * (LINE+2C+2D)
ST7735_FRMCTR3
,
6
,
// 5: Frame rate ctrl - partial mode, 6 args:
0x01
,
0x2C
,
0x2D
,
// Dot inversion mode
0x01
,
0x2C
,
0x2D
,
// Line inversion mode
ST7735_INVCTR
,
1
,
// 6: Display inversion ctrl, 1 arg, no delay:
0x07
,
// No inversion
ST7735_PWCTR1
,
3
,
// 7: Power control, 3 args, no delay:
0xA2
,
0x02
,
// -4.6V
0x84
,
// AUTO mode
ST7735_PWCTR2
,
1
,
// 8: Power control, 1 arg, no delay:
0xC5
,
// VGH25 = 2.4C VGSEL = -10 VGH = 3 * AVDD
ST7735_PWCTR3
,
2
,
// 9: Power control, 2 args, no delay:
0x0A
,
// Opamp current small
0x00
,
// Boost frequency
ST7735_PWCTR4
,
2
,
// 10: Power control, 2 args, no delay:
0x8A
,
// BCLK/2, Opamp current small & Medium low
0x2A
,
ST7735_PWCTR5
,
2
,
// 11: Power control, 2 args, no delay:
0x8A
,
0xEE
,
ST7735_VMCTR1
,
1
,
// 12: Power control, 1 arg, no delay:
0x0E
,
ST7735_INVOFF
,
0
,
// 13: Don't invert display, no args, no delay
ST7735_MADCTL
,
1
,
// 14: Memory access control (directions), 1 arg:
ST7735_ROTATION
,
// row addr/col addr, bottom to top refresh
ST7735_COLMOD
,
1
,
// 15: set color mode, 1 arg, no delay:
0x05
},
// 16-bit color
#if (defined(ST7735_IS_128X128) || defined(ST7735_IS_160X128))
init_cmds2
[]
=
{
// Init for 7735R, part 2 (1.44" display)
2
,
// 2 commands in list:
ST7735_CASET
,
4
,
// 1: Column addr set, 4 args, no delay:
0x00
,
0x00
,
// XSTART = 0
0x00
,
0x7F
,
// XEND = 127
ST7735_RASET
,
4
,
// 2: Row addr set, 4 args, no delay:
0x00
,
0x00
,
// XSTART = 0
0x00
,
0x7F
},
// XEND = 127
#endif // ST7735_IS_128X128
#ifdef ST7735_IS_160X80
init_cmds2
[]
=
{
// Init for 7735S, part 2 (160x80 display)
3
,
// 3 commands in list:
ST7735_CASET
,
4
,
// 1: Column addr set, 4 args, no delay:
0x00
,
0x00
,
// XSTART = 0
0x00
,
0x4F
,
// XEND = 79
ST7735_RASET
,
4
,
// 2: Row addr set, 4 args, no delay:
0x00
,
0x00
,
// XSTART = 0
0x00
,
0x9F
,
// XEND = 159
},
// 3: Invert colors
#endif
init_cmds3
[]
=
{
// Init for 7735R, part 3 (red or green tab)
4
,
// 4 commands in list:
ST7735_GMCTRP1
,
16
,
// 1: Magical unicorn dust, 16 args, no delay:
0x02
,
0x1c
,
0x07
,
0x12
,
0x37
,
0x32
,
0x29
,
0x2d
,
0x29
,
0x25
,
0x2B
,
0x39
,
0x00
,
0x01
,
0x03
,
0x10
,
ST7735_GMCTRN1
,
16
,
// 2: Sparkles and rainbows, 16 args, no delay:
0x03
,
0x1d
,
0x07
,
0x06
,
0x2E
,
0x2C
,
0x29
,
0x2D
,
0x2E
,
0x2E
,
0x37
,
0x3F
,
0x00
,
0x00
,
0x02
,
0x10
,
ST7735_NORON
,
DELAY
,
// 3: Normal display on, no args, w/delay
10
,
// 10 ms delay
ST7735_DISPON
,
DELAY
,
// 4: Main screen turn on, no args w/delay
100
};
// 100 ms delay
static
void
ST7735_Select
()
{
// HAL_GPIO_WritePin(ST7735_CS_GPIO_Port, ST7735_CS_Pin, GPIO_PIN_RESET);
DEV_Digital_Write
(
EPD_CS_PIN
,
0
);
}
void
ST7735_Unselect
()
{
//HAL_GPIO_WritePin(ST7735_CS_GPIO_Port, ST7735_CS_Pin, GPIO_PIN_SET);
DEV_Digital_Write
(
EPD_CS_PIN
,
1
);
}
static
void
ST7735_Reset
()
{
DEV_Digital_Write
(
EPD_RST_PIN
,
0
);
sleep_ms
(
5
);
DEV_Digital_Write
(
EPD_RST_PIN
,
1
);
}
static
void
ST7735_WriteCommand
(
uint8_t
cmd
)
{
//HAL_GPIO_WritePin(ST7735_DC_GPIO_Port, ST7735_DC_Pin, GPIO_PIN_RESET);
DEV_Digital_Write
(
EPD_DC_PIN
,
0
);
spi_write_blocking
(
SPI_PORT
,
&
cmd
,
sizeof
(
cmd
));
// HAL_SPI_Transmit(&ST7735_SPI_PORT, &cmd, sizeof(cmd), HAL_MAX_DELAY);
}
static
void
ST7735_WriteData
(
uint8_t
*
buff
,
size_t
buff_size
)
{
//HAL_GPIO_WritePin(ST7735_DC_GPIO_Port, ST7735_DC_Pin, GPIO_PIN_SET);
DEV_Digital_Write
(
EPD_DC_PIN
,
1
);
spi_write_blocking
(
SPI_PORT
,
buff
,
buff_size
);
// HAL_SPI_Transmit(&ST7735_SPI_PORT, buff, buff_size, HAL_MAX_DELAY);
}
static
void
ST7735_ExecuteCommandList
(
const
uint8_t
*
addr
)
{
uint8_t
numCommands
,
numArgs
;
uint16_t
ms
;
numCommands
=
*
addr
++
;
while
(
numCommands
--
)
{
uint8_t
cmd
=
*
addr
++
;
ST7735_WriteCommand
(
cmd
);
numArgs
=
*
addr
++
;
// If high bit set, delay follows args
ms
=
numArgs
&
DELAY
;
numArgs
&=
~
DELAY
;
if
(
numArgs
)
{
ST7735_WriteData
((
uint8_t
*
)
addr
,
numArgs
);
addr
+=
numArgs
;
}
if
(
ms
)
{
ms
=
*
addr
++
;
if
(
ms
==
255
)
ms
=
500
;
sleep_ms
(
ms
);
}
}
}
static
void
ST7735_SetAddressWindow
(
uint8_t
x0
,
uint8_t
y0
,
uint8_t
x1
,
uint8_t
y1
)
{
// column address set
ST7735_WriteCommand
(
ST7735_CASET
);
uint8_t
data
[]
=
{
0x00
,
x0
+
ST7735_XSTART
,
0x00
,
x1
+
ST7735_XSTART
};
ST7735_WriteData
(
data
,
sizeof
(
data
));
// row address set
ST7735_WriteCommand
(
ST7735_RASET
);
data
[
1
]
=
y0
+
ST7735_YSTART
;
data
[
3
]
=
y1
+
ST7735_YSTART
;
ST7735_WriteData
(
data
,
sizeof
(
data
));
// write to RAM
ST7735_WriteCommand
(
ST7735_RAMWR
);
}
void
ST7735_Init
()
{
DEV_Module_Init
();
ST7735_Select
();
ST7735_Reset
();
ST7735_ExecuteCommandList
(
init_cmds1
);
ST7735_ExecuteCommandList
(
init_cmds2
);
ST7735_ExecuteCommandList
(
init_cmds3
);
ST7735_Unselect
();
}
void
ST7735_DrawPixel
(
uint16_t
x
,
uint16_t
y
,
uint16_t
color
)
{
if
((
x
>=
ST7735_WIDTH
)
||
(
y
>=
ST7735_HEIGHT
))
return
;
ST7735_Select
();
ST7735_SetAddressWindow
(
x
,
y
,
x
+
1
,
y
+
1
);
uint8_t
data
[]
=
{
color
>>
8
,
color
&
0xFF
};
ST7735_WriteData
(
data
,
sizeof
(
data
));
ST7735_Unselect
();
}
static
void
ST7735_WriteChar
(
uint16_t
x
,
uint16_t
y
,
char
ch
,
FontDef
font
,
uint16_t
color
,
uint16_t
bgcolor
)
{
uint32_t
i
,
b
,
j
;
ST7735_SetAddressWindow
(
x
,
y
,
x
+
font
.
width
-
1
,
y
+
font
.
height
-
1
);
for
(
i
=
0
;
i
<
font
.
height
;
i
++
)
{
b
=
font
.
data
[(
ch
-
32
)
*
font
.
height
+
i
];
for
(
j
=
0
;
j
<
font
.
width
;
j
++
)
{
if
((
b
<<
j
)
&
0x8000
)
{
uint8_t
data
[]
=
{
color
>>
8
,
color
&
0xFF
};
ST7735_WriteData
(
data
,
sizeof
(
data
));
}
else
{
uint8_t
data
[]
=
{
bgcolor
>>
8
,
bgcolor
&
0xFF
};
ST7735_WriteData
(
data
,
sizeof
(
data
));
}
}
}
}
/*
Simpler (and probably slower) implementation:
static void ST7735_WriteChar(uint16_t x, uint16_t y, char ch, FontDef font, uint16_t color) {
uint32_t i, b, j;
for(i = 0; i < font.height; i++) {
b = font.data[(ch - 32) * font.height + i];
for(j = 0; j < font.width; j++) {
if((b << j) & 0x8000) {
ST7735_DrawPixel(x + j, y + i, color);
}
}
}
}
*/
void
ST7735_WriteString
(
uint16_t
x
,
uint16_t
y
,
const
char
*
str
,
FontDef
font
,
uint16_t
color
,
uint16_t
bgcolor
)
{
ST7735_Select
();
while
(
*
str
)
{
if
(
x
+
font
.
width
>=
ST7735_WIDTH
)
{
x
=
0
;
y
+=
font
.
height
;
if
(
y
+
font
.
height
>=
ST7735_HEIGHT
)
{
break
;
}
if
(
*
str
==
' '
)
{
// skip spaces in the beginning of the new line
str
++
;
continue
;
}
}
ST7735_WriteChar
(
x
,
y
,
*
str
,
font
,
color
,
bgcolor
);
x
+=
font
.
width
;
str
++
;
}
ST7735_Unselect
();
}
void
ST7735_FillRectangle
(
uint16_t
x
,
uint16_t
y
,
uint16_t
w
,
uint16_t
h
,
uint16_t
color
)
{
// clipping
if
((
x
>=
ST7735_WIDTH
)
||
(
y
>=
ST7735_HEIGHT
))
return
;
if
((
x
+
w
-
1
)
>=
ST7735_WIDTH
)
w
=
ST7735_WIDTH
-
x
;
if
((
y
+
h
-
1
)
>=
ST7735_HEIGHT
)
h
=
ST7735_HEIGHT
-
y
;
ST7735_Select
();
ST7735_SetAddressWindow
(
x
,
y
,
x
+
w
-
1
,
y
+
h
-
1
);
uint8_t
data
[]
=
{
color
>>
8
,
color
&
0xFF
};
//HAL_GPIO_WritePin(ST7735_DC_GPIO_Port, ST7735_DC_Pin, GPIO_PIN_SET);
DEV_Digital_Write
(
EPD_DC_PIN
,
1
);
for
(
y
=
h
;
y
>
0
;
y
--
)
{
for
(
x
=
w
;
x
>
0
;
x
--
)
{
// HAL_SPI_Transmit(&ST7735_SPI_PORT, data, sizeof(data), HAL_MAX_DELAY);
spi_write_blocking
(
SPI_PORT
,
data
,
sizeof
(
data
));
}
}
ST7735_Unselect
();
}
void
ST7735_FillScreen
(
uint16_t
color
)
{
ST7735_FillRectangle
(
0
,
0
,
ST7735_WIDTH
,
ST7735_HEIGHT
,
color
);
}
void
ST7735_DrawImage
(
uint16_t
x
,
uint16_t
y
,
uint16_t
w
,
uint16_t
h
,
const
uint8_t
*
data
)
{
ST7735_Select
();
ST7735_SetAddressWindow
(
x
,
y
,
x
+
w
-
1
,
y
+
h
-
1
);
ST7735_WriteData
((
uint8_t
*
)
data
,
sizeof
(
uint16_t
)
*
w
*
h
);
ST7735_Unselect
();
}
void
ST7735_InvertColors
(
bool
invert
)
{
ST7735_Select
();
ST7735_WriteCommand
(
invert
?
ST7735_INVON
:
ST7735_INVOFF
);
ST7735_Unselect
();
}
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