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334 lines
8.9 KiB
334 lines
8.9 KiB
#include <stdint.h>
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#include "PCD8544.h"
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#include <pins_arduino.h>
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#include <avr/pgmspace.h>
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// LCD commands, Table 1, page 14
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#define PCD8544_FUNCTION_SET (1<<5)
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#define PCD8544_FUNCTION_PD (1<<2)
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#define PCD8544_FUNCTION_V (1<<1)
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#define PCD8544_FUNCTION_H (1<<0)
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// Normal instructions, H = 0
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#define PCD8544_DISPLAY_CONTROL (1<<3)
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#define PCD8544_DISPLAY_CONTROL_D (1<<2)
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#define PCD8544_DISPLAY_CONTROL_E (1<<0)
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#define PCD8544_DISPLAY_CONTROL_BLANK 0
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#define PCD8544_DISPLAY_CONTROL_NORMAL_MODE PCD8544_DISPLAY_CONTROL_D
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#define PCD8544_DISPLAY_CONTROL_ALL_ON PCD8544_DISPLAY_CONTROL_E
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#define PCD8544_DISPLAY_CONTROL_INVERSE (PCD8544_DISPLAY_CONTROL_D|PCD8544_DISPLAY_CONTROL_E)
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#define PCD8544_SET_Y_ADDRESS (1<<6)
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#define PCD8544_Y_ADRESS_MASK 0b111
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#define PCD8544_SET_X_ADDRESS (1<<7)
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#define PCD8544_X_ADRESS_MASK 0b01111111
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// Extended instructions. H = 1
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#define PCD8544_TEMP_CONTROL (1<<2)
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#define PCD8544_TEMP_TC1 (1<<1)
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#define PCD8544_TEMP_TC0 (1<<0)
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#define PCD8544_BIAS (1<<4)
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#define PCD8544_BIAS_BS2 (1<<2)
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#define PCD8544_BIAS_BS1 (1<<1)
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#define PCD8544_BIAS_BS0 (1<<0)
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#define PCD8544_VOP (1<<7)
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const unsigned char PROGMEM small_num[][4] = {
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{0x0e,0x15,0x0e,0x00}, // 48, zero
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{0x12,0x1f,0x10,0x00}, // 49, one
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{0x12,0x19,0x16,0x00}, // 50, two
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{0x11,0x15,0x0b,0x00}, // 51, three
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{0x07,0x04,0x1f,0x00}, // 52, four
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{0x17,0x15,0x09,0x00}, // 53, five
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{0x0e,0x15,0x09,0x00}, // 54, six
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{0x19,0x05,0x03,0x00}, // 55, seven
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{0x1a,0x15,0x0b,0x00}, // 56, eight
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{0x12,0x15,0x0e,0x00}, // 57, nine
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{0x00,0x10,0x00,0x00}, // 46, period
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};
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const unsigned char PROGMEM font6x8 [][5] = {
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{0x00,0x00,0x00,0x00,0x00,}, // ' ' 32
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{0x00,0x00,0x5F,0x00,0x00,}, // '!' 33
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{0x00,0x07,0x00,0x07,0x00,}, // '"' 34
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{0x14,0x7F,0x14,0x7F,0x14,}, // '#' 35
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{0x24,0x2A,0x7F,0x2A,0x12,}, // '$' 36
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{0x23,0x13,0x08,0x64,0x62,}, // '%' 37
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{0x36,0x49,0x55,0x22,0x50,}, // '&' 38
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{0x00,0x05,0x03,0x00,0x00,}, // ''' 39
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{0x00,0x1C,0x22,0x41,0x00,}, // '(' 40
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{0x00,0x41,0x22,0x1C,0x00,}, // ')' 41
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{0x14,0x08,0x3E,0x08,0x14,}, // '*' 42
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{0x08,0x08,0x3E,0x08,0x08,}, // '+' 43
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{0x00,0x50,0x30,0x00,0x00,}, // ',' 44
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{0x08,0x08,0x08,0x08,0x08,}, // '-' 45
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{0x00,0x60,0x60,0x00,0x00,}, // '.' 46
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{0x20,0x10,0x08,0x04,0x02,}, // '/' 47
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{0x3E,0x51,0x49,0x45,0x3E,}, // '0' 48
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{0x00,0x42,0x7F,0x40,0x00,}, // '1' 49
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{0x42,0x61,0x51,0x49,0x46,}, // '2' 50
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{0x21,0x41,0x45,0x4B,0x31,}, // '3' 51
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{0x18,0x14,0x12,0x7F,0x10,}, // '4' 52
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{0x27,0x45,0x45,0x45,0x39,}, // '5' 53
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{0x3C,0x4A,0x49,0x49,0x30,}, // '6' 54
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{0x03,0x01,0x71,0x09,0x07,}, // '7' 55
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{0x36,0x49,0x49,0x49,0x36,}, // '8' 56
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{0x06,0x49,0x49,0x29,0x16,}, // '9' 57
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{0x00,0x36,0x36,0x00,0x00,}, // ':' 58
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{0x00,0x56,0x36,0x00,0x00,}, // ';' 59
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{0x08,0x14,0x22,0x41,0x00,}, // '<' 60
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{0x14,0x14,0x14,0x14,0x14,}, // '=' 61
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{0x00,0x41,0x22,0x14,0x08,}, // '>' 62
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{0x02,0x01,0x51,0x09,0x06,}, // '?' 63
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{0x32,0x49,0x79,0x41,0x3E,}, // '@' 64
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{0x7E,0x11,0x11,0x11,0x7E,}, // 'A' 65
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{0x7F,0x49,0x49,0x49,0x36,}, // 'B' 66
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{0x3E,0x41,0x41,0x41,0x22,}, // 'C' 67
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{0x7F,0x41,0x41,0x22,0x1C,}, // 'D' 68
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{0x7F,0x49,0x49,0x49,0x41,}, // 'E' 69
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{0x7F,0x09,0x09,0x01,0x01,}, // 'F' 70
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{0x3E,0x41,0x49,0x49,0x3A,}, // 'G' 71
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{0x7F,0x08,0x08,0x08,0x7F,}, // 'H' 72
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{0x00,0x41,0x7F,0x41,0x00,}, // 'I' 73
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{0x20,0x41,0x41,0x3F,0x01,}, // 'J' 74
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{0x7F,0x08,0x14,0x22,0x41,}, // 'K' 75
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{0x7F,0x40,0x40,0x40,0x40,}, // 'L' 76
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{0x7F,0x02,0x0C,0x02,0x7F,}, // 'M' 77
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{0x7F,0x04,0x08,0x10,0x7F,}, // 'N' 78
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{0x3E,0x41,0x41,0x41,0x3E,}, // 'O' 79
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{0x7F,0x09,0x09,0x09,0x06,}, // 'P' 80
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{0x3E,0x41,0x51,0x21,0x5E,}, // 'Q' 81
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{0x7F,0x09,0x19,0x29,0x46,}, // 'R' 82
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{0x26,0x49,0x49,0x49,0x32,}, // 'S' 83
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{0x01,0x01,0x7F,0x01,0x01,}, // 'T' 84
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{0x3F,0x40,0x40,0x40,0x3F,}, // 'U' 85
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{0x1F,0x20,0x40,0x20,0x1F,}, // 'V' 86
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{0x3F,0x40,0x38,0x40,0x3F,}, // 'W' 87
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{0x63,0x14,0x08,0x14,0x63,}, // 'X' 88
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{0x07,0x08,0x70,0x08,0x07,}, // 'Y' 89
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{0x61,0x51,0x49,0x45,0x43,}, // 'Z' 90
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{0x00,0x7F,0x41,0x41,0x00,}, // '[' 91
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{0x02,0x04,0x08,0x10,0x20,}, // '\' 92
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{0x00,0x41,0x41,0x7F,0x00,}, // ']' 93
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{0x04,0x02,0x01,0x02,0x04,}, // '^' 94
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{0x40,0x40,0x40,0x40,0x40,}, // '_' 95
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{0x00,0x01,0x02,0x04,0x00,}, // '`' 96
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{0x20,0x54,0x54,0x54,0x78,}, // 'a' 97
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{0x7F,0x48,0x44,0x44,0x38,}, // 'b' 98
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{0x38,0x44,0x44,0x44,0x20,}, // 'c' 99
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{0x38,0x44,0x44,0x48,0x3F,}, // 'd' 100
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{0x38,0x54,0x54,0x54,0x18,}, // 'e' 101
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{0x08,0x7E,0x09,0x01,0x02,}, // 'f' 102
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{0x0C,0x52,0x52,0x52,0x3E,}, // 'g' 103
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{0x7F,0x08,0x04,0x04,0x78,}, // 'h' 104
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{0x00,0x44,0x7D,0x40,0x00,}, // 'i' 105
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{0x20,0x40,0x45,0x3C,0x00,}, // 'j' 106
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{0x7F,0x10,0x28,0x44,0x00,}, // 'k' 107
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{0x00,0x41,0x7F,0x40,0x00,}, // 'l' 108
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{0x7C,0x04,0x18,0x04,0x78,}, // 'm' 109
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{0x7C,0x08,0x04,0x04,0x78,}, // 'n' 110
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{0x38,0x44,0x44,0x44,0x38,}, // 'o' 111
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{0x7C,0x14,0x14,0x14,0x08,}, // 'p' 112
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{0x08,0x14,0x14,0x18,0x7C,}, // 'q' 113
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{0x7C,0x08,0x04,0x04,0x08,}, // 'r' 114
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{0x48,0x54,0x54,0x54,0x20,}, // 's' 115
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{0x04,0x3F,0x44,0x40,0x20,}, // 't' 116
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{0x3C,0x40,0x40,0x20,0x7C,}, // 'u' 117
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{0x1C,0x20,0x40,0x20,0x1C,}, // 'v' 118
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{0x3C,0x40,0x30,0x40,0x3C,}, // 'w' 119
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{0x44,0x28,0x10,0x28,0x44,}, // 'x' 120
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{0x0C,0x50,0x50,0x50,0x3C,}, // 'y' 121
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{0x44,0x64,0x54,0x4C,0x44,}, // 'z' 122
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{0x00,0x08,0x36,0x41,0x00,}, // '{' 123
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{0x00,0x00,0x7F,0x00,0x00,}, // '|' 124
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{0x00,0x41,0x36,0x08,0x00,}, // '}' 125
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{0x10,0x08,0x08,0x10,0x08,}, // '~' 126
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{0x08,0x1C,0x2A,0x08,0x08,} // <- 127
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};
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PCD8544::PCD8544(uint8_t dc_pin, uint8_t reset_pin, uint8_t cs_pin, uint8_t hardware_spi)
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{
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dc = dc_pin;
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cs = cs_pin;
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reset = reset_pin;
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hardware_spi_num = hardware_spi;
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if (hardware_spi_num > 2)
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hardware_spi_num = 2;
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#ifndef MAPLE
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sdin = MOSI;
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sclk = SCK;
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#else
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sdin = 11; // Change to maple names
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sclk = 13;
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if (hardware_spi_num == 2) {
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sdin = 32;
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sclk = 34;
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}
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#endif
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}
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PCD8544::PCD8544(uint8_t dc_pin, uint8_t reset_pin, uint8_t cs_pin, uint8_t sdin_pin, uint8_t sclk_pin)
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{
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dc = dc_pin;
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cs = cs_pin;
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reset = reset_pin;
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sdin = sdin_pin;
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sclk = sclk_pin;
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hardware_spi_num = 0;
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}
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void PCD8544::begin(void)
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{
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pinMode(cs, OUTPUT);
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pinMode(reset, OUTPUT);
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pinMode(dc, OUTPUT);
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pinMode(sdin, OUTPUT);
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pinMode(sclk, OUTPUT);
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if (hardware_spi_num > 0) {
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pinMode(SS, OUTPUT); // To ensure master mode
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SPCR |= (1<<SPE) | (1<<MSTR);
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}
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digitalWrite(reset, LOW);
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delay(1);
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digitalWrite(reset, HIGH);
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// Extenden instructions and !powerdown
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// and horizontal adressing (autoincrement of x-adress)
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command(PCD8544_FUNCTION_SET | PCD8544_FUNCTION_H);
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// Set Vop to 0x3F
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command(PCD8544_VOP | 0xBF);
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// Vlcd temp. coeff. 0
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command(PCD8544_TEMP_CONTROL);
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// Bias system 4, 1:48
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command(PCD8544_BIAS | PCD8544_BIAS_BS1 | PCD8544_BIAS_BS0);
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// Set H = 0 for normal instructions
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command(PCD8544_FUNCTION_SET);
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// Normal mode
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command(PCD8544_DISPLAY_CONTROL | PCD8544_DISPLAY_CONTROL_NORMAL_MODE);
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}
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void PCD8544::clear(void)
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{
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int i;
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for (i = 0; i < PCD8544_WIDTH*PCD8544_LINES; i++)
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data(0);
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}
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WRITE_RESULT PCD8544::write(uint8_t ch)
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{
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uint8_t i;
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if (ch == '\r')
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gotoRc(current_row, 0);
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if (ch == '\n')
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gotoRc(current_row+1, current_column);
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if (ch >= ' ' && ch <= 127) {
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for (i = 0; i < 5; i++)
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data(pgm_read_byte(&font6x8[ch-' '][i]) <<1);
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data(0);
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}
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WRITE_RETURN;
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}
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//void PCD8544::toggle_invert(void) {
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// invert_line = !invert_line;
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//}
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void PCD8544::data(uint8_t data) {
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// if (invert_line)
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// send(1, ~data);
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// else
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send(1, data);
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}
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void PCD8544::command(uint8_t data)
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{
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send(0, data);
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}
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void PCD8544::send(uint8_t data_or_command, uint8_t data)
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{
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digitalWrite(dc, data_or_command);
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digitalWrite(cs, LOW);
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if (hardware_spi_num == 0) {
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shiftOut(sdin, sclk, MSBFIRST, data);
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} else {
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SPDR = data;
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while(!(SPSR & (1<<SPIF))) ;
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}
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digitalWrite(cs, HIGH);
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if(data_or_command)
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inc_row_column();
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}
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void PCD8544::setCursor(uint8_t column, uint8_t row)
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{
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gotoRc(row, 6*column);
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}
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void PCD8544::gotoRc(uint8_t row, uint8_t column)
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{
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if (row >= PCD8544_LINES)
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row %= PCD8544_LINES;
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if (column >= PCD8544_WIDTH)
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row %= PCD8544_WIDTH;
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command(PCD8544_SET_X_ADDRESS | column);
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command(PCD8544_SET_Y_ADDRESS | row);
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current_row = row;
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current_column = column;
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}
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void PCD8544::inc_row_column(void)
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{
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if (++current_column >= PCD8544_WIDTH) {
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current_column = 0;
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if (++current_row >= PCD8544_LINES)
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current_row = 0;
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}
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// invert_line = false;
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}
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void PCD8544::smallNum(uint8_t num, uint8_t shift)
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{
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uint8_t i;
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for (i = 0; i < 4; i++)
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data(pgm_read_byte(&small_num[num][i])<<shift);
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}
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void PCD8544::clearRestOfLine(void)
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{
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while (current_column != 0)
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data(0);
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}
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void PCD8544::bitmap(const byte bdata[], uint8_t rows, uint8_t columns)
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{
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uint8_t row, column, i;
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uint8_t toprow = current_row;
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uint8_t startcolumn = current_column;
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for (row = 0, i = 0; row < rows; row++) {
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gotoRc(row+toprow, startcolumn);
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for (column = 0; column < columns; column++) {
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data(pgm_read_byte(&bdata[i++]));
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}
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}
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}
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