Hallo zusammen
Hier mal für alle die es interessiert eine Quick and Dirty
initialisierung für ein SSD1302 LCD
Display konfig: VCC offen, VDD & VBAT zusammen an 3.3V
IREF ca. 470kOhm Widerstand nach GND
BS0 = 1, BS1&2 = 0
1 | void write_spi (unsigned char data_out)
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2 | { //msb first
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3 | unsigned char mask;
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4 | for (mask=0x80; mask; mask=mask>>1)
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5 | {
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6 | GPIO_ResetBits(GPIOA,SPI1_SCK);
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7 | if (data_out & mask)
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8 | {
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9 | GPIO_SetBits(GPIOA,SPI1_MOSI);
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10 | }
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11 | else GPIO_ResetBits(GPIOA,SPI1_MOSI);
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12 | GPIO_SetBits(GPIOA,SPI1_SCK);
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13 | }
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14 | GPIO_ResetBits(GPIOA,SPI1_SCK);
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15 | }
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16 |
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17 |
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18 | void display_cmd(unsigned char ucData)
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19 | {
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20 |
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21 | GPIO_SetBits(GPIOA,SPI1_CS);
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22 |
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23 | GPIO_ResetBits(GPIOA,DISP_DC);
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24 |
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25 | GPIO_ResetBits(GPIOA,SPI1_CS);
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26 |
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27 | write_spi(ucData); //Standard SPI Port
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28 |
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29 | GPIO_SetBits(GPIOA,SPI1_CS);
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30 |
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31 | }
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32 |
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33 | void display_data(unsigned char ucData)
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34 | {
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35 |
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36 | GPIO_SetBits(GPIOA,SPI1_CS);
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37 |
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38 | GPIO_SetBits(GPIOA,DISP_DC);
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39 |
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40 | GPIO_ResetBits(GPIOA,SPI1_CS);
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41 |
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42 | write_spi(ucData);
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43 |
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44 | GPIO_SetBits(GPIOA,SPI1_CS);
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45 |
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46 | }
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47 |
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48 |
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49 | void ssd1302_init(void)
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50 | {
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51 |
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52 | GPIO_SetBits(GPIOA,DISP_RESET); //Reset high -> low -> high
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53 | delay(60000);
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54 | GPIO_ResetBits(GPIOA,DISP_RESET);
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55 | delay(60000);
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56 | GPIO_SetBits(GPIOA,DISP_RESET);
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57 | delay(60000);
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58 |
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59 | display_cmd(0xAE);
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60 | display_cmd(0xD5);
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61 | display_cmd(0x80);
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62 | display_cmd(0xA8);
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63 | display_cmd(0x3F);
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64 |
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65 | display_cmd(0xD3);
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66 | display_cmd(0x00);
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67 | display_cmd(0x40);
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68 |
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69 | display_cmd(0x8D);
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70 | display_cmd(0x14);
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71 | display_cmd(0x20);
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72 | display_cmd(0x00);
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73 | display_cmd(0xA1);
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74 | display_cmd(0xC8);
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75 |
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76 | display_cmd(0xDA);
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77 | display_cmd(0x12);
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78 | display_cmd(0x81);
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79 | display_cmd(0xCF);
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80 | display_cmd(0xD9);
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81 | display_cmd(0xF1);
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82 | display_cmd(0xD8);
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83 | display_cmd(0x40);
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84 | display_cmd(0xA4);
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85 | display_cmd(0xA6);
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86 | display_cmd(0xAF); //Display on
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87 |
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88 | }
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