ARM7 comprehensive experiment. Development Environment IAR, board using a YL-LPC2148. Features: through the UART (IRQ interrupt vectors), the receiving host computer sent the control command, the command control of a specific frequency tweet buzzer, LCD will also use songs and calls of buzzer frequency is displayed through the development of on-board external interrupt Yuan S4, S5 (phase volume break) 0,1 sequence of external input (press the S5 on behalf of 1, S4 representative of 0), the sequence back to PC, while LED flashes to indicate S4, S5 operate effectively.

lab4.2\beep.c
......\beep.h
......\clock.c
......\clock.h
......\Config\LPC2148_flash.xcl
......\......\LPC2148_RAM.mac
......\......\LPC2148_RAM.xcl
......\......\lpc2xxx_cstartup.s79
......\Debug\Obj\lab4.pbd
......\int.c
......\int.h
......\lab4.2.dep
......\lab4.2.ewd
......\lab4.2.ewp
......\lab4.2.eww
......\lcd.c
......\lcd.h
......\led.c
......\led.h
......\main.c
......\RAM\Exe\lab4.2.a79
......\...\...\lab4.2.d79
......\...\Obj\beep.r79
......\...\...\clock.r79
......\...\...\int.r79
......\...\...\lab4.pbd
......\...\...\lcd.r79
......\...\...\led.r79
......\...\...\lpc2xxx_cstartup.r79
......\...\...\main.r79
......\...\...\timer.r79
......\...\...\uart0.r79
......\settings\lab4.2.dbgdt
......\........\lab4.2.wsdt
......\........\lab4.dni
......\timer.c
......\timer.h
......\uart0.c
......\uart0.h
......\Debug\Exe
......\.....\List
......\.....\Obj
......\RAM\Exe
......\...\List
......\...\Obj
......\Config
......\Debug
......\RAM
......\settings
lab4.2

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