Steward
分享是一種喜悅、更是一種幸福
微處理器 - STCmicro STC15W4K56S4 - C/C++ - 0.96" OLED 128x64 SSD1306
屏
main.c
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 | #include "stc15w4k56s4.h" #define I2C_SDA P01 #define I2C_SCL P00 #define SSD1306_ADDRESS 0x78 #define SSD1306_LCDWIDTH 128 #define SSD1306_LCDHEIGHT 64 #define SSD1306_SETCONTRAST 0x81 #define SSD1306_DISPLAYALLOW_RESUME 0xA4 #define SSD1306_DISPLAYALLOW 0xA5 #define SSD1306_NORMALDISPLAY 0xA6 #define SSD1306_INVERTDISPLAY 0xA7 #define SSD1306_DISPLAYOFF 0xAE #define SSD1306_DISPLAYON 0xAF #define SSD1306_SETDISPLAYOFFSET 0xD3 #define SSD1306_SETCOMPINS 0xDA #define SSD1306_SETVCOMDETECT 0xDB #define SSD1306_SETDISPLAYCLOCKDIV 0xD5 #define SSD1306_SETPRECHARGE 0xD9 #define SSD1306_SETMULTIPLEX 0xA8 #define SSD1306_SETLOWCOLUMN 0x00 #define SSD1306_SETHIGHCOLUMN 0x10 #define SSD1306_SETSTARTLINE 0x40 #define SSD1306_MEMORYMODE 0x20 #define SSD1306_COLUMNADDR 0x21 #define SSD1306_PAGEADDR 0x22 #define SSD1306_COMSCANINC 0xC0 #define SSD1306_COMSCANDEC 0xC8 #define SSD1306_SEGREMAP 0xA0 #define SSD1306_CHARGEPUMP 0x8D #define SSD1306_EXTERNALVCC 0x01 #define SSD1306_SWITCHCAPVCC 0x02 void delay ( unsigned cnt) { while (cnt--) { } } void i2c_start ( void ) { I2C_SDA = 1; I2C_SCL = 1; delay (10); I2C_SDA = 0; delay (10); I2C_SCL = 0; } void i2c_stop ( void ) { delay (10); I2C_SDA = 0; delay (10); I2C_SCL = 1; delay (10); I2C_SDA = 1; } unsigned char i2c_write ( unsigned char val ) { unsigned char i = 9; unsigned char ack = 0; while (--i) { delay (10); I2C_SDA = ( val & 0x80) ? 1 : 0; delay (10); I2C_SCL = 1; delay (10); val <<= 1; I2C_SCL = 0; } delay (10); I2C_SDA = 1; delay (10); I2C_SCL = 1; delay (10); ack = I2C_SDA ; delay (10); I2C_SCL = 0; return ack; } unsigned char i2c_read ( unsigned char ack) { unsigned char i = 9; unsigned char val = 0; while (--i) { val <<= 1; delay (10); I2C_SCL = 1; delay (10); val |= I2C_SDA ; delay (10); I2C_SCL = 0; } delay (10); I2C_SDA = ack; delay (10); I2C_SCL = 1; delay (10); I2C_SCL = 0; return val ; } void i2c_write_byte ( unsigned char saddr, unsigned char raddr, unsigned char val ) { unsigned char i = 10; while (--i) { i2c_start (); if ( i2c_write (saddr)) { continue ; } if ( i2c_write (raddr)) { continue ; } if ( i2c_write ( val )) { continue ; } i2c_stop (); break ; } } unsigned char i2c_read_byte ( unsigned char saddr, unsigned char raddr) { unsigned char i = 10; unsigned char value = 0; while (--i) { i2c_start (); if ( i2c_write (saddr & 0xfe)) { continue ; } if ( i2c_write (raddr)) { continue ; } i2c_start (); if ( i2c_write (saddr | 1)) { continue ; } value = i2c_read (1); i2c_stop (); break ; } return value ; } void gpio_init ( void ) { P0M0 = 0x00; P0M1 = 0x00; P1M0 = 0x00; P1M1 = 0x00; P2M0 = 0x00; P2M1 = 0x00; P3M0 = 0x00; P3M1 = 0x00; P4M0 = 0x00; P4M1 = 0x00; } void ssd1306_cmd ( unsigned char c) { i2c_start (); i2c_write ( SSD1306_ADDRESS ); i2c_write (0x00); i2c_write (c); i2c_stop (); } void ssd1306_data ( unsigned char c) { i2c_start (); i2c_write ( SSD1306_ADDRESS ); i2c_write (0x40); i2c_write (c); i2c_stop (); } void ssd1306_init ( void ) { ssd1306_cmd ( SSD1306_DISPLAYOFF ); ssd1306_cmd ( SSD1306_SETDISPLAYCLOCKDIV ); ssd1306_cmd (0x80); ssd1306_cmd ( SSD1306_SETMULTIPLEX ); ssd1306_cmd (0x3F); ssd1306_cmd ( SSD1306_SETDISPLAYOFFSET ); ssd1306_cmd (0x0); ssd1306_cmd ( SSD1306_SETSTARTLINE ); ssd1306_cmd ( SSD1306_CHARGEPUMP ); ssd1306_cmd (0x14); ssd1306_cmd ( SSD1306_MEMORYMODE ); ssd1306_cmd (0x00); ssd1306_cmd ( SSD1306_SEGREMAP | 0x01); ssd1306_cmd ( SSD1306_COMSCANDEC ); ssd1306_cmd ( SSD1306_SETCOMPINS ); ssd1306_cmd (0x12); ssd1306_cmd ( SSD1306_SETCONTRAST ); ssd1306_cmd (0xCF); ssd1306_cmd ( SSD1306_SETPRECHARGE ); ssd1306_cmd (0xF1); ssd1306_cmd ( SSD1306_SETVCOMDETECT ); ssd1306_cmd (0x40); ssd1306_cmd ( SSD1306_DISPLAYALLOW_RESUME ); ssd1306_cmd ( SSD1306_NORMALDISPLAY ); ssd1306_cmd ( SSD1306_DISPLAYON ); } void ssd1306_set_col_addr ( void ) { ssd1306_cmd ( SSD1306_COLUMNADDR ); ssd1306_cmd (0); ssd1306_cmd ( SSD1306_LCDWIDTH -1); } void ssd1306_set_page_addr ( void ) { ssd1306_cmd ( SSD1306_PAGEADDR ); ssd1306_cmd (0); ssd1306_cmd (( SSD1306_LCDHEIGHT /8)-1); } void main ( void ) { unsigned int i = 0; unsigned int col = 0; gpio_init (); AUXR |= 0x80; ssd1306_init (); while (1) { ssd1306_set_col_addr (); ssd1306_set_page_addr (); i2c_start (); i2c_write ( SSD1306_ADDRESS ); i2c_write (0x40); for (i = 0; i < 1024; i++) { i2c_write (0xff); } i2c_stop (); } } |
Makefile
all: sdcc main.c packihx main.ihx > main.hex flash: sudo stcgal -p /dev/ttyO2 -P stc15 -o clock_source=external main.hex clean: rm -rf main.ihx main.lst main.mem main.rst main.lk main.map main.rel main.sym main.hex
完成