Sim mbed
main.cpp@0:898fb821307d, 2009-12-01 (annotated)
- Committer:
- Sim
- Date:
- Tue Dec 01 08:04:17 2009 +0000
- Revision:
- 0:898fb821307d
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| Sim | 0:898fb821307d | 1 | // AD-12864-SPI test program |
| Sim | 0:898fb821307d | 2 | // About AD-12864-SPI, see http://www.aitendo.co.jp/product/1622. |
| Sim | 0:898fb821307d | 3 | |
| Sim | 0:898fb821307d | 4 | // Pin allocation |
| Sim | 0:898fb821307d | 5 | // 1 p21 #CS1 with 10k ohm pull-up |
| Sim | 0:898fb821307d | 6 | // 2 p22 #RESET with 10k ohm pull-up |
| Sim | 0:898fb821307d | 7 | // 3 p23 A0 ... 0:command 1:data |
| Sim | 0:898fb821307d | 8 | // 4 p13 SCK |
| Sim | 0:898fb821307d | 9 | // 5 p11 MOSI |
| Sim | 0:898fb821307d | 10 | // 6 Vdd |
| Sim | 0:898fb821307d | 11 | // 7 Vss |
| Sim | 0:898fb821307d | 12 | // 8 NC LED_A |
| Sim | 0:898fb821307d | 13 | |
| Sim | 0:898fb821307d | 14 | #include "mbed.h" |
| Sim | 0:898fb821307d | 15 | |
| Sim | 0:898fb821307d | 16 | DigitalOut cs(p21); |
| Sim | 0:898fb821307d | 17 | DigitalOut rst(p22); |
| Sim | 0:898fb821307d | 18 | DigitalOut a0(p23); |
| Sim | 0:898fb821307d | 19 | SPI spi(p11, p12, p13); // mosi, miso, sclk |
| Sim | 0:898fb821307d | 20 | |
| Sim | 0:898fb821307d | 21 | void regwrite(unsigned char c){ |
| Sim | 0:898fb821307d | 22 | cs = a0 = 0; |
| Sim | 0:898fb821307d | 23 | spi.write(c); |
| Sim | 0:898fb821307d | 24 | cs = 1; |
| Sim | 0:898fb821307d | 25 | } |
| Sim | 0:898fb821307d | 26 | |
| Sim | 0:898fb821307d | 27 | void datawrite(unsigned char c){ |
| Sim | 0:898fb821307d | 28 | cs = 0; |
| Sim | 0:898fb821307d | 29 | a0 = 1; |
| Sim | 0:898fb821307d | 30 | spi.write(c); |
| Sim | 0:898fb821307d | 31 | cs = 1; |
| Sim | 0:898fb821307d | 32 | } |
| Sim | 0:898fb821307d | 33 | |
| Sim | 0:898fb821307d | 34 | // set position (x, 8*y) |
| Sim | 0:898fb821307d | 35 | void locate(int x, int y){ |
| Sim | 0:898fb821307d | 36 | regwrite(0xb0 | (y & 0x0f)); // Page Address Set (see 2.4.3) |
| Sim | 0:898fb821307d | 37 | regwrite(0x10 | (x >> 4 & 0x0f)); // Column Address Set (see 2.4.4) |
| Sim | 0:898fb821307d | 38 | regwrite(x & 0x0f); |
| Sim | 0:898fb821307d | 39 | } |
| Sim | 0:898fb821307d | 40 | |
| Sim | 0:898fb821307d | 41 | void cls(void){ |
| Sim | 0:898fb821307d | 42 | int x, y; |
| Sim | 0:898fb821307d | 43 | for(y = 0; y < 8; y++){ |
| Sim | 0:898fb821307d | 44 | locate(0, y); |
| Sim | 0:898fb821307d | 45 | for(x = 0; x < 128; x++) datawrite(0x00); |
| Sim | 0:898fb821307d | 46 | } |
| Sim | 0:898fb821307d | 47 | } |
| Sim | 0:898fb821307d | 48 | |
| Sim | 0:898fb821307d | 49 | void plot(int x, int y){ |
| Sim | 0:898fb821307d | 50 | locate(x, y >> 3); |
| Sim | 0:898fb821307d | 51 | datawrite(1 << (y & 7)); |
| Sim | 0:898fb821307d | 52 | } |
| Sim | 0:898fb821307d | 53 | |
| Sim | 0:898fb821307d | 54 | void init(){ |
| Sim | 0:898fb821307d | 55 | spi.format(8,0); // nazo |
| Sim | 0:898fb821307d | 56 | spi.frequency(20000000); // modify later |
| Sim | 0:898fb821307d | 57 | |
| Sim | 0:898fb821307d | 58 | // reset |
| Sim | 0:898fb821307d | 59 | wait_ms(200); |
| Sim | 0:898fb821307d | 60 | rst = 0; |
| Sim | 0:898fb821307d | 61 | wait_ms(200); |
| Sim | 0:898fb821307d | 62 | rst = 1; |
| Sim | 0:898fb821307d | 63 | |
| Sim | 0:898fb821307d | 64 | // initialize sequence |
| Sim | 0:898fb821307d | 65 | regwrite(0xaf); // display on (see 2.4.1) |
| Sim | 0:898fb821307d | 66 | regwrite(0x2f); // power control set (see 2.4.16) |
| Sim | 0:898fb821307d | 67 | regwrite(0x81); // set electronic volume mode (see 2.4.18) |
| Sim | 0:898fb821307d | 68 | // regwrite(0x1f); // electronic volume data 00-3f |
| Sim | 0:898fb821307d | 69 | regwrite(0x00); // electronic volume data 00-3f |
| Sim | 0:898fb821307d | 70 | regwrite(0x27); // V5 Volatge Regulator Internal Resister Ratio Set (see 2.4.17) |
| Sim | 0:898fb821307d | 71 | regwrite(0xa2); // LCD Bias Set ... 1/9 bias (see 2.4.11) |
| Sim | 0:898fb821307d | 72 | regwrite(0xc8); // Common Output Mode Select ... Reverse (see 2.4.15) |
| Sim | 0:898fb821307d | 73 | regwrite(0xa0); // ADC Select ... Normal (see 2.4.8) |
| Sim | 0:898fb821307d | 74 | regwrite(0xa4); // Display All Points ON/OFF ... normal (see 2.4.10) |
| Sim | 0:898fb821307d | 75 | regwrite(0xa6); // Display Normal/Reverse ... normal (see 2.4.9) |
| Sim | 0:898fb821307d | 76 | regwrite(0xac); // Static Indicator ... off (see 2.4.19) |
| Sim | 0:898fb821307d | 77 | regwrite(0x00); // off |
| Sim | 0:898fb821307d | 78 | regwrite(0x40); // Display Strat Line Set ... 0 (see 2.4.2) |
| Sim | 0:898fb821307d | 79 | regwrite(0xe0); // Write Mode Set |
| Sim | 0:898fb821307d | 80 | } |
| Sim | 0:898fb821307d | 81 | |
| Sim | 0:898fb821307d | 82 | DigitalOut myled(LED1); |
| Sim | 0:898fb821307d | 83 | |
| Sim | 0:898fb821307d | 84 | int main() { |
| Sim | 0:898fb821307d | 85 | int i; |
| Sim | 0:898fb821307d | 86 | |
| Sim | 0:898fb821307d | 87 | init(); |
| Sim | 0:898fb821307d | 88 | |
| Sim | 0:898fb821307d | 89 | cls(); |
| Sim | 0:898fb821307d | 90 | locate(0, 0); |
| Sim | 0:898fb821307d | 91 | for(i = 0; i < 256; i++) datawrite(i); |
| Sim | 0:898fb821307d | 92 | |
| Sim | 0:898fb821307d | 93 | for(i = 0; i < 64; i++){ |
| Sim | 0:898fb821307d | 94 | plot(64 + i, 0); |
| Sim | 0:898fb821307d | 95 | plot(64 + i, 63); |
| Sim | 0:898fb821307d | 96 | } |
| Sim | 0:898fb821307d | 97 | |
| Sim | 0:898fb821307d | 98 | for(i = 0; i < 8; i++){ |
| Sim | 0:898fb821307d | 99 | locate(64, i); |
| Sim | 0:898fb821307d | 100 | datawrite(0xff); |
| Sim | 0:898fb821307d | 101 | locate(127,i); |
| Sim | 0:898fb821307d | 102 | datawrite(0xff); |
| Sim | 0:898fb821307d | 103 | } |
| Sim | 0:898fb821307d | 104 | |
| Sim | 0:898fb821307d | 105 | for(i = 0; i < 64; i++) plot(i, i); |
| Sim | 0:898fb821307d | 106 | |
| Sim | 0:898fb821307d | 107 | while(1) { |
| Sim | 0:898fb821307d | 108 | myled = 1; |
| Sim | 0:898fb821307d | 109 | wait_ms(200); |
| Sim | 0:898fb821307d | 110 | myled = 0; |
| Sim | 0:898fb821307d | 111 | wait_ms(200); |
| Sim | 0:898fb821307d | 112 | } |
| Sim | 0:898fb821307d | 113 | } |