Writing Character strings to NHD-1.8-128160EF-CTXI#
Has anyone have a good method to send character strings to display on the TFT LCD screen?
All the example codes show how to paint the entire screen a single colour, and from what I understand of the code, it's basically sending the pixel colour for each and every pixel of the 128x160 screen.
But is there a way to send characters onto the screen dynamically? Something similar to the UILCD_WriteData() functions for the COG screens?
Or must I write a rather complicated (in my mind) function that converts ascii characters to pixel maps and writes them onto the screen one by one?
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Yes, you would need to do exactly what you have described in your last statement. You need a font table in your program, and then you need a function that draws each character pixel by pixel based off the font table. Similar to below:
unsigned char Ascii_1[97][5]={ // Refer to "Times New Roman" Font Database...
// Basic Characters
{0xFF,0xFF,0xFF,0xFF,0xFF}, // ( 0) - 0x0000 Empty set
{0x00,0x00,0x4F,0x00,0x00}, // ( 1) ! - 0x0021 Exclamation Mark
{0x00,0x07,0x00,0x07,0x00}, // ( 2) " - 0x0022 Quotation Mark
{0x14,0x7F,0x14,0x7F,0x14}, // ( 3) # - 0x0023 Number Sign
{0x24,0x2A,0x7F,0x2A,0x12}, // ( 4) $ - 0x0024 Dollar Sign
{0x23,0x13,0x08,0x64,0x62}, // ( 5) % - 0x0025 Percent Sign
{0x36,0x49,0x55,0x22,0x50}, // ( 6) & - 0x0026 Ampersand
{0x00,0x05,0x03,0x00,0x00}, // ( 7) ' - 0x0027 Apostrophe
{0x00,0x1C,0x22,0x41,0x00}, // ( 8) ( - 0x0028 Left Parenthesis
{0x00,0x41,0x22,0x1C,0x00}, // ( 9) ) - 0x0029 Right Parenthesis
{0x14,0x08,0x3E,0x08,0x14}, // ( 10) * - 0x002A Asterisk
{0x08,0x08,0x3E,0x08,0x08}, // ( 11) + - 0x002B Plus Sign
{0x00,0x50,0x30,0x00,0x00}, // ( 12) , - 0x002C Comma
{0x08,0x08,0x08,0x08,0x08}, // ( 13) - - 0x002D Hyphen-Minus
{0x00,0x60,0x60,0x00,0x00}, // ( 14) . - 0x002E Full Stop
{0x20,0x10,0x08,0x04,0x02}, // ( 15) / - 0x002F Solidus
{0x3E,0x51,0x49,0x45,0x3E}, // ( 16) 0 - 0x0030 Digit Zero
{0x00,0x42,0x7F,0x40,0x00}, // ( 17) 1 - 0x0031 Digit One
{0x42,0x61,0x51,0x49,0x46}, // ( 18) 2 - 0x0032 Digit Two
{0x21,0x41,0x45,0x4B,0x31}, // ( 19) 3 - 0x0033 Digit Three
{0x18,0x14,0x12,0x7F,0x10}, // ( 20) 4 - 0x0034 Digit Four
{0x27,0x45,0x45,0x45,0x39}, // ( 21) 5 - 0x0035 Digit Five
{0x3C,0x4A,0x49,0x49,0x30}, // ( 22) 6 - 0x0036 Digit Six
{0x01,0x71,0x09,0x05,0x03}, // ( 23) 7 - 0x0037 Digit Seven
{0x36,0x49,0x49,0x49,0x36}, // ( 24) 8 - 0x0038 Digit Eight
{0x06,0x49,0x49,0x29,0x1E}, // ( 25) 9 - 0x0039 Dight Nine
{0x00,0x36,0x36,0x00,0x00}, // ( 26) : - 0x003A Colon
{0x00,0x56,0x36,0x00,0x00}, // ( 27) ; - 0x003B Semicolon
{0x08,0x14,0x22,0x41,0x00}, // ( 28) < - 0x003C Less-Than Sign
{0x14,0x14,0x14,0x14,0x14}, // ( 29) = - 0x003D Equals Sign
{0x00,0x41,0x22,0x14,0x08}, // ( 30) > - 0x003E Greater-Than Sign
{0x02,0x01,0x51,0x09,0x06}, // ( 31) ? - 0x003F Question Mark
{0x32,0x49,0x79,0x41,0x3E}, // ( 32) @ - 0x0040 Commercial At
{0x7E,0x11,0x11,0x11,0x7E}, // ( 33) A - 0x0041 Latin Capital Letter A
{0x7F,0x49,0x49,0x49,0x36}, // ( 34) B - 0x0042 Latin Capital Letter B
{0x3E,0x41,0x41,0x41,0x22}, // ( 35) C - 0x0043 Latin Capital Letter C
{0x7F,0x41,0x41,0x22,0x1C}, // ( 36) D - 0x0044 Latin Capital Letter D
{0x7F,0x49,0x49,0x49,0x41}, // ( 37) E - 0x0045 Latin Capital Letter E
{0x7F,0x09,0x09,0x09,0x01}, // ( 38) F - 0x0046 Latin Capital Letter F
{0x3E,0x41,0x49,0x49,0x7A}, // ( 39) G - 0x0047 Latin Capital Letter G
{0x7F,0x08,0x08,0x08,0x7F}, // ( 40) H - 0x0048 Latin Capital Letter H
{0x00,0x41,0x7F,0x41,0x00}, // ( 41) I - 0x0049 Latin Capital Letter I
{0x20,0x40,0x41,0x3F,0x01}, // ( 42) J - 0x004A Latin Capital Letter J
{0x7F,0x08,0x14,0x22,0x41}, // ( 43) K - 0x004B Latin Capital Letter K
{0x7F,0x40,0x40,0x40,0x40}, // ( 44) L - 0x004C Latin Capital Letter L
{0x7F,0x02,0x0C,0x02,0x7F}, // ( 45) M - 0x004D Latin Capital Letter M
{0x7F,0x04,0x08,0x10,0x7F}, // ( 46) N - 0x004E Latin Capital Letter N
{0x3E,0x41,0x41,0x41,0x3E}, // ( 47) O - 0x004F Latin Capital Letter O
{0x7F,0x09,0x09,0x09,0x06}, // ( 48) P - 0x0050 Latin Capital Letter P
{0x3E,0x41,0x51,0x21,0x5E}, // ( 49) Q - 0x0051 Latin Capital Letter Q
{0x7F,0x09,0x19,0x29,0x46}, // ( 50) R - 0x0052 Latin Capital Letter R
{0x46,0x49,0x49,0x49,0x31}, // ( 51) S - 0x0053 Latin Capital Letter S
{0x01,0x01,0x7F,0x01,0x01}, // ( 52) T - 0x0054 Latin Capital Letter T
{0x3F,0x40,0x40,0x40,0x3F}, // ( 53) U - 0x0055 Latin Capital Letter U
{0x1F,0x20,0x40,0x20,0x1F}, // ( 54) V - 0x0056 Latin Capital Letter V
{0x3F,0x40,0x38,0x40,0x3F}, // ( 55) W - 0x0057 Latin Capital Letter W
{0x63,0x14,0x08,0x14,0x63}, // ( 56) X - 0x0058 Latin Capital Letter X
{0x07,0x08,0x70,0x08,0x07}, // ( 57) Y - 0x0059 Latin Capital Letter Y
{0x61,0x51,0x49,0x45,0x43}, // ( 58) Z - 0x005A Latin Capital Letter Z
{0x00,0x7F,0x41,0x41,0x00}, // ( 59) [ - 0x005B Left Square Bracket
{0x02,0x04,0x08,0x10,0x20}, // ( 60) \ - 0x005C Reverse Solidus
{0x00,0x41,0x41,0x7F,0x00}, // ( 61) ] - 0x005D Right Square Bracket
{0x04,0x02,0x01,0x02,0x04}, // ( 62) ^ - 0x005E Circumflex Accent
{0x40,0x40,0x40,0x40,0x40}, // ( 63) _ - 0x005F Low Line
{0x01,0x02,0x04,0x00,0x00}, // ( 64) ` - 0x0060 Grave Accent
{0x20,0x54,0x54,0x54,0x78}, // ( 65) a - 0x0061 Latin Small Letter A
{0x7F,0x48,0x44,0x44,0x38}, // ( 66) b - 0x0062 Latin Small Letter B
{0x38,0x44,0x44,0x44,0x20}, // ( 67) c - 0x0063 Latin Small Letter C
{0x38,0x44,0x44,0x48,0x7F}, // ( 68) d - 0x0064 Latin Small Letter D
{0x38,0x54,0x54,0x54,0x18}, // ( 69) e - 0x0065 Latin Small Letter E
{0x08,0x7E,0x09,0x01,0x02}, // ( 70) f - 0x0066 Latin Small Letter F
{0x06,0x49,0x49,0x49,0x3F}, // ( 71) g - 0x0067 Latin Small Letter G
{0x7F,0x08,0x04,0x04,0x78}, // ( 72) h - 0x0068 Latin Small Letter H
{0x00,0x44,0x7D,0x40,0x00}, // ( 73) i - 0x0069 Latin Small Letter I
{0x20,0x40,0x44,0x3D,0x00}, // ( 74) j - 0x006A Latin Small Letter J
{0x7F,0x10,0x28,0x44,0x00}, // ( 75) k - 0x006B Latin Small Letter K
{0x00,0x41,0x7F,0x40,0x00}, // ( 76) l - 0x006C Latin Small Letter L
{0x7C,0x04,0x18,0x04,0x7C}, // ( 77) m - 0x006D Latin Small Letter M
{0x7C,0x08,0x04,0x04,0x78}, // ( 78) n - 0x006E Latin Small Letter N
{0x38,0x44,0x44,0x44,0x38}, // ( 79) o - 0x006F Latin Small Letter O
{0x7C,0x14,0x14,0x14,0x08}, // ( 80) p - 0x0070 Latin Small Letter P
{0x08,0x14,0x14,0x18,0x7C}, // ( 81) q - 0x0071 Latin Small Letter Q
{0x7C,0x08,0x04,0x04,0x08}, // ( 82) r - 0x0072 Latin Small Letter R
{0x48,0x54,0x54,0x54,0x20}, // ( 83) s - 0x0073 Latin Small Letter S
{0x04,0x3F,0x44,0x40,0x20}, // ( 84) t - 0x0074 Latin Small Letter T
{0x3C,0x40,0x40,0x20,0x7C}, // ( 85) u - 0x0075 Latin Small Letter U
{0x1C,0x20,0x40,0x20,0x1C}, // ( 86) v - 0x0076 Latin Small Letter V
{0x3C,0x40,0x30,0x40,0x3C}, // ( 87) w - 0x0077 Latin Small Letter W
{0x44,0x28,0x10,0x28,0x44}, // ( 88) x - 0x0078 Latin Small Letter X
{0x0C,0x50,0x50,0x50,0x3C}, // ( 89) y - 0x0079 Latin Small Letter Y
{0x44,0x64,0x54,0x4C,0x44}, // ( 90) z - 0x007A Latin Small Letter Z
{0x00,0x08,0x36,0x41,0x00}, // ( 91) { - 0x007B Left Curly Bracket
{0x00,0x00,0x7F,0x00,0x00}, // ( 92) | - 0x007C Vertical Line
{0x00,0x41,0x36,0x08,0x00}, // ( 93) } - 0x007D Right Curly Bracket
{0x02,0x01,0x02,0x04,0x02}, // ( 94) ~ - 0x007E Tilde
{0x08,0x0C,0x0E,0x0C,0x08}, // ( 95) upward facing triangle/arrow
{0x08,0x18,0x38,0x18,0x08}, // ( 96) downward facing triangle/arrow
};
void LCD_Text2x(unsigned int row, unsigned int column, unsigned char letter, unsigned int color)
{
int i, j=1;
int count;
unsigned char mask = 0x80;
for (i=0;i<16;i++)//each character is 8 px tall (x2 = 16px tall)
{
Set_Column_Address((column>>8),column,0x00,0xEF);
Set_Page_Address((row>>8),row,0x01,0x3F);
comm_out(0x2C);
digitalWrite(RS, HIGH);
for(count=0;count<10;count++)//each character is 5px wide (x2 = 10px wide)
{
if((Ascii_1[letter][(count/2)] & mask) == mask)
{
LCD_Pixel(color); //text color
}
else
{
LCD_Pixel(WHITE); //background color
}
}
row++;
if((j%2)==0)
{
mask = mask >> 1;
}
j++;
}
}Please note this is simply one example of accomplishing this. For different style fonts, larger text, etc. you will need to write code to accommodate.
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Good morning Michael_L ,
I'm new in the forum and in the use of TFT Newhaven and seeing the solution you gave , could , if possible , give me the code of the functions :
- Set_Column_Address
- Set_Page_Address
- LCD_Pixel
For I can implement in my testing!
Thank you in advance .0 -
Hi daota, please see below:
void comm_out(unsigned char c)
{
DC_LOW;
PORTA = c;
WR_LOW;
WR_HIGH;
}
void data_out(unsigned char d)
{
PORTA = d;
WR_LOW;
WR_HIGH;
}
void Set_Column_Address(unsigned int a, unsigned int b, unsigned int c, unsigned int d)
{
comm_out(0x2A);
digitalWrite(RS, HIGH);
data_out(a);
data_out(b);
data_out(c);
data_out(d);
}
void Set_Page_Address(unsigned int a, unsigned int b, unsigned int c, unsigned int d)
{
comm_out(0x2B);
digitalWrite(RS, HIGH);
data_out(a);
data_out(b);
data_out(c);
data_out(d);
}
void LCD_Pixel(unsigned int color)
{
data_out((color>>16));
data_out((color>>8));
data_out((color));
}0
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