微處理器 - Lattice GAL22V10 - Assembly - UART


參考資訊：
https://www.stcmicro.com/datasheet/STC15F204EA-cn.pdf
https://www.stcmicro.com/datasheet/STC15F2K60S2-en.pdf

AUXR


Interrupt


SCON


main.s 

    led set p1.2
    t2l data 0d7h
    t2h data 0d6h
 
    .org 0x00
    jmp start
 
    .org 0x23
    jmp uart_handle
 
    .org 0x100
start:
    mov scon, #50h
    mov t2l, #0e0h
    mov t2h, #0feh
    orl auxr, #10h
    orl auxr, #1
    orl auxr, #4
    setb es
    setb ea

    setb led
    mov dptr, #str_crlf
    call send_string
    mov dptr, #str_hello
    call send_string
    jmp $

uart_handle:
    jnb ri, finish
    clr ri
    cpl led
    mov dptr, #str_ok
    call send_string
finish:
    reti

send_string:
    clr a
    movc a, @a+dptr
    jz send_done
    mov sbuf, a
wait_ti:
    jnb ti, wait_ti
    clr ti
    inc dptr
    jmp send_string
send_done:
    ret

str_crlf:
    db 0dh, 0ah, 00h

str_hello:
    db 'H', 'e', 'l', 'l', 'o', ',', ' ', 'w', 'o', 'r', 'l', 'd', '!', 0dh, 0ah, 00h

str_ok:
    db 'O', 'K', 0dh, 0ah, 00h
    .end

完成