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Riistvarapõhine programmeerimine

Riistvarapõhine programmeerimine. Labor 3 Kahe registriga välisseadme kasutamine , LCD. HD44780U (LCD-II). 5 x 8 and 5 x 10 dot matrix possible 4-bit or 8-bit MPU interface enabled 80 x 8-bit display RAM (80 characters max.) 64 ´ 8-bit character generator RAM

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Riistvarapõhine programmeerimine

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  1. Riistvarapõhine programmeerimine Labor 3 Kahe registriga välisseadme kasutamine, LCD

  2. HD44780U (LCD-II) • 5 x 8 and 5 x 10 dot matrix possible • 4-bit or 8-bit MPU interface enabled • 80 x 8-bit display RAM (80 characters max.) • 64 ´ 8-bit character generator RAM • 16-common ´ 40-segment liquid crystal display driver http://www.itcollege.ee/~amulin/8051/DATASHEETS/LCD/hd44780.pdf ID218 Riistvaralähedane programmeerimine

  3. LCD registrid • Kirjutamine käsuregistrisse 8000h • Kirjutamine andmeregistrisse 8001h • Lugemine käsuregistrist 8002h • Lugemine andmeregistrist 8003h ID218 Riistvaralähedane programmeerimine

  4. LCD kasutamine I • Kontrollida staatus • Kui staatus = 80h, väljastame käsk • Kui staatus !=80h, ootame ID218 Riistvaralähedane programmeerimine

  5. LCD kasutamine II • LCD init 8 bits, 2 line display, 5x7 pixel chars, jne • LCD clear Clear display • LCD home Move cursor to home position • LCD set xy Set the address • LCD putchar Writing a char ID218 Riistvaralähedane programmeerimine

  6. LCD kasutamine III • Otsekasutamine, led31.c • LCD teek, led32.c • Funktsioon putchar defineerimine http://www.pjrc.com/tech/8051/board5/lcd_example.html ID218 Riistvaralähedane programmeerimine

  7. Ülesanded • Led31.c • Led32.c • Putchar defineerimine • LCD lisamine LED projekti, sec, min, hour ID218 Riistvaralähedane programmeerimine

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