Private:

Lang: Lua Plain text Python Shurtle Bash Batch Brainf**k C C++ CSS Common Lisp Common lisp Diff HTML IRC Logs Java Javascript Julia Julia console NASM PHP Perl PowerShell Python Console Python Traceback VB.NET XML YAML

Text: // S6B0108/KS0108 LCD test code. // Arduino MEGA. // Data bus wired to PORT A. // Control signals wired to PORT C. // // Documents used for reference: // - http://www.pighixxx.com/test/pinouts/boards/mega.pdf // - http://www.cec-mc.ru/data/files/File/PDF/PG12864-H.PDF // - https://openlabpro.com/guide/ks0108-graphic-lcd-interfacing-pic18f4550-part-2/ // // Copyright (c) 2017 Odd Stråbø <oddstr13@openshell.no> // License: MIT - https://opensource.org/licenses/MIT // const uint8_t DI_b = 0; const uint8_t RW_b = 1; const uint8_t E_b = 2; const uint8_t CS1_b = 3; const uint8_t CS2_b = 4; const uint8_t DI = _BV(DI_b); // HIGH == Data, LOW == Instruction const uint8_t RW = _BV(RW_b); // HIGH == Read, LOW == Write const uint8_t E = _BV(E_b); // LOW -> HIGH == Clock const uint8_t CS1 = _BV(CS1_b); // LOW == Select const uint8_t CS2 = _BV(CS2_b); // LOW == Select const bool REG_INSTRUCTION = 0; const bool REG_DATA = 1; const bool RW_READ = 1; const bool RW_WRITE = 0; const uint8_t STATUS_BUSY = _BV(7); const uint8_t STATUS_ONOFF = _BV(5); const uint8_t STATUS_RESET = _BV(4); void lcd_write(bool reg, const uint8_t data) { DDRA = 0; // Input // Clear everything but CS1 and CS2, then set DI(reg) PORTC = (PORTC & (CS1 | CS2)) | reg << DI_b; PORTC &= CS1 | CS2; PORTC |= reg << DI_b; DDRA = 0xff; // Output PORTA = data; delayMicroseconds(2); PORTC |= E; delayMicroseconds(2); PORTC &= ~E; delayMicroseconds(2); DDRA = 0; // Input } uint8_t lcd_read(bool reg) { DDRA = 0; // Input // Clear everything but CS1 and CS2, then set RW and DI(reg) PORTC = (PORTC & (CS1 | CS2)) | RW | reg << DI_b; delayMicroseconds(2); PORTC |= E; delayMicroseconds(2); uint8_t data = PINA; PORTC &= ~E; delayMicroseconds(2); return data; } void lcd_on() { lcd_write(REG_INSTRUCTION, 0b00111111); } void lcd_off() { lcd_write(REG_INSTRUCTION, 0b00111110); } uint8_t readStatus() { return lcd_read(REG_INSTRUCTION); } void lcd_set_page_address(uint8_t addr) { // address 0-63 lcd_write(REG_INSTRUCTION, 0b01000000 | (addr & 0b111111)); } void lcd_select_page(uint8_t page) { // page 0-7 lcd_write(REG_INSTRUCTION, 0b10111000 | (page & 0b111)); } void setup() { Serial.begin(115200); Serial.println("Setup start."); // put your setup code here, to run once: DDRA = 0; // PA Input DDRC = 0; PORTC = DI | CS1; // Default; Data Write on 2nd segment(CS2) DDRC = DI | RW | E | CS1 | CS2; lcd_on(); lcd_select_page(0); lcd_set_page_address(0); Serial.println("Setup end."); } uint8_t seq = 0; void loop() { //PORTC lcd_write(REG_DATA, seq); seq++; delay(50); }