Sim mbed
/
SPILCDtest
main.cpp
- Committer:
- Sim
- Date:
- 2009-12-01
- Revision:
- 0:898fb821307d
File content as of revision 0:898fb821307d:
// AD-12864-SPI test program // About AD-12864-SPI, see http://www.aitendo.co.jp/product/1622. // Pin allocation // 1 p21 #CS1 with 10k ohm pull-up // 2 p22 #RESET with 10k ohm pull-up // 3 p23 A0 ... 0:command 1:data // 4 p13 SCK // 5 p11 MOSI // 6 Vdd // 7 Vss // 8 NC LED_A #include "mbed.h" DigitalOut cs(p21); DigitalOut rst(p22); DigitalOut a0(p23); SPI spi(p11, p12, p13); // mosi, miso, sclk void regwrite(unsigned char c){ cs = a0 = 0; spi.write(c); cs = 1; } void datawrite(unsigned char c){ cs = 0; a0 = 1; spi.write(c); cs = 1; } // set position (x, 8*y) void locate(int x, int y){ regwrite(0xb0 | (y & 0x0f)); // Page Address Set (see 2.4.3) regwrite(0x10 | (x >> 4 & 0x0f)); // Column Address Set (see 2.4.4) regwrite(x & 0x0f); } void cls(void){ int x, y; for(y = 0; y < 8; y++){ locate(0, y); for(x = 0; x < 128; x++) datawrite(0x00); } } void plot(int x, int y){ locate(x, y >> 3); datawrite(1 << (y & 7)); } void init(){ spi.format(8,0); // nazo spi.frequency(20000000); // modify later // reset wait_ms(200); rst = 0; wait_ms(200); rst = 1; // initialize sequence regwrite(0xaf); // display on (see 2.4.1) regwrite(0x2f); // power control set (see 2.4.16) regwrite(0x81); // set electronic volume mode (see 2.4.18) // regwrite(0x1f); // electronic volume data 00-3f regwrite(0x00); // electronic volume data 00-3f regwrite(0x27); // V5 Volatge Regulator Internal Resister Ratio Set (see 2.4.17) regwrite(0xa2); // LCD Bias Set ... 1/9 bias (see 2.4.11) regwrite(0xc8); // Common Output Mode Select ... Reverse (see 2.4.15) regwrite(0xa0); // ADC Select ... Normal (see 2.4.8) regwrite(0xa4); // Display All Points ON/OFF ... normal (see 2.4.10) regwrite(0xa6); // Display Normal/Reverse ... normal (see 2.4.9) regwrite(0xac); // Static Indicator ... off (see 2.4.19) regwrite(0x00); // off regwrite(0x40); // Display Strat Line Set ... 0 (see 2.4.2) regwrite(0xe0); // Write Mode Set } DigitalOut myled(LED1); int main() { int i; init(); cls(); locate(0, 0); for(i = 0; i < 256; i++) datawrite(i); for(i = 0; i < 64; i++){ plot(64 + i, 0); plot(64 + i, 63); } for(i = 0; i < 8; i++){ locate(64, i); datawrite(0xff); locate(127,i); datawrite(0xff); } for(i = 0; i < 64; i++) plot(i, i); while(1) { myled = 1; wait_ms(200); myled = 0; wait_ms(200); } }