ESP1ºÎ-04

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1 Chapter ,..,.,.,.,. RTOS(Real-Time Operating System)., RTOS.. VxWorks( psos( VRTX( com), QNX( OSE( Nucleus( com), MC/OSII( (preempted), POSIX API...,. 137

2 PART 1,..,,. MS-DOS. (sensor) (actuator).,,,,,. RTOS.,... (,, ). (deadline),.,.,. 138

3 Chapter 04 H/W, S/W.,, ROM,.,,,,,,,,,,,,., RTOS,,,,,,. RTOS RTOS. RTOS..,.,. 4.2.,.,,..,.,. C, 139

4 PART 1. C.,,. CPU,....,,,,,.,,,,,.. PDA. PDA,,,,. RTOS OS.,,,,, / 140

5 Chapter 04 RTOS. OS.. RTOS. RTOS.,. RTOS OS,.,... RTOS RTOS,,

6 PART 1 IPC(, ) CPU... CPU. CPU. CPU, 142

7 Chapter 04. [. ]. (periodic), (aperiodic), (sporadic). ms...,. ms. (critical) (non-critical).., CPU (preemptive) (nonpreemptive). CPU. (critical section). (static priority) (dynamic priority).,.. VxWorks PSOS (Earliest Deadline First, EDF)..,., Liu Layland (rate 143

8 PART 1 monotonic).,,. (Utilization Factor, UF).. EDF, (deadline driven).,., EDF.,. EDF EDF EDF(Earliest Deadline First). EDF.. RM. EDF., EDF RM. RM. RM..,, EDF,., RM

9 Chapter CPU,,,,.,,... VxWorks (swap)...,.. (exclusive access) (binary semaphore). ( ),..,.,.,,.. 145

10 PART 1 T 1,. (priority inversion). [. ]. T H [. ] T 1, T 2, T 3. T 1, T 3 S. [. ] T 3 t. t T 3 S. t S t. S T 3 T 1. t T 2, T 3. S, t. T 3 t S. T 1. T 1 T 2.. T 3 T 1 T 3 T 3 T 2 (priority inheritance). T H, T 1.. [ 146

11 Chapter 04. ], t T 3 T 3, T 3 T 1 T 2 T : Lock Lock Unlock Unlock T 1 : Lock Lock Unlock Unlock T 2 S 1 S 2 T 2 T 1. T 2 t t S 2. t T 1 T 1 T 2. t T 1 S 1. t T 1 S 2. T 2 T 1 T 2 T 1. t T 2 S 1, T 2.. S 1 S 2 S 1 T 2 S 2 S 1 T 1 T 2 S 1 S 2 S 1 S 2... P(T) T P(S) S. [. ]. S 1 T 1 S 2 T 1 T 1 T 2 T 3 P( ) P( T 1 ) S 3 T 3 P( T 3 ) S 4 P( ) T 2 T 2 T 3 T 2 147

12 PART 1., ( ). [. ]. T 2 S 2 T 1. T 1 S 1. S 2.., (multi-thread), (multi-process)..,,. (embedded system) WindRriver psos VxWorks, Enea OSE Systems OSE, LinuxWorks LynxOS, Finite State Machine Labs RTLinux, MS Windows CE, GUI (Linu@), [. ]. Arx/mArx(micro Arx) Qplus(Q+).,. 148

13 Chapter OS-, LynxOS, QNX. psos Windriver Windriver VxWorks.. VxWorks WindRiver.. OS.. VxWorks. 149

14 PART 1 psosystem VxWorks... (Tornado)..,,,. TCP/IP ROM. MS-DOS RT-. VxWorks BSP(Board Support Package),,. 150

15 Chapter 04 Nucleus Accelerated Technology (royalty free).,,,. Nucleus. Nucleus ARM, MIPS, PPC, M K, SH, Analog TI, Hitachi DSP. 151

16 PART 1 ATI Nucleus Web Browser HTTP., HTML.. Nucleus GRAFIX Nucleus Web Browser. Windows CE.NET Microsoft, Windows CE.. Microsoft Windows CE.NET. Windows CE.NET. Windows CE.NET,,,, Windows CE. Windows CE.NET. 152

17 Chapter 04 Windows CE.NET Bluetooth,. x/zero Configuration, OBEX(Object Exchange), MediaSense, (RTC/SIP).,, CPU :, MS Windows.,..., HPC, PDA,,. CPU,. GUI.,,.., POSIX (monolithic) :. 153

18 PART 1,,,,, TCP/IP GPL(GNU General Public License) : : : x, alpha, ppc, arm, sparc, CPU..,, (tool). OS RTLinux Linux BSD,,,, RTOS. (duel kernel technology) Linux, BSD OS RT Core OS Linux BSD, BSD. 154

19 Chapter 04 RTOS RTLinux OS. RTLinux BSD (GUI, soft realtime networking, plotting, disk access ) RTLinux. RTLinux POSIX. RTLinux RTOS(Real-Time Operating System), RTOS. RTOS RTOS S/W. RTOS RTOS. RTOS. RTOS time-to-market. (,, LG ) RTOS TV RTOS Q+( Qplus). Q+, Q+, API, (Esto), (Q+/Esto). 155

20 PART Q+/Esto Q+, Q+, API,.. OS (Hardware Abstraction Layer, HAL),,,,, I/O,, IPC(Inter Process Communication). HAL CPU,, H/W. I/O I/O I/O.,,, API, TCP/IP API. IPC. 156

21 Chapter 04 OS C, /,,,. C,,,,, C, / Graphic Primitive, Window, Event/Task., API. telnet, tftp, dhcp, ppp. API,,,,. /, MPEG-, MPEG-, MPEG-, MP. (I-TV VBI), (DTV ), HTML, 157

22 PART 1,,,. HTML TV HTML., HTTP., JavaScript, SSL,, ATVEF content type, /.,,, POP, IMAP, SMTP, MIME,, HTML,,, (G. ). 158

23 Chapter 04,,,,. GNU C COFF ELF, GUI Breakpoint, Single-Stepping,.,,,, Profiling Chart,,,,,., Q+ TV, PDA Q+/Esto. - TV

24 PART 1 - C - / - - / - (MPEG-, MP, MPEG- ) - / - Esto IDE In-house Embedded Software Embedded Software.. RTOS,, VxWorks(Windriver ), psos(isi ), VRTX(Mento Grapics ), OS- (Microware Systems ), QNX(QSSL ), WinCE(MS ), Embedded JAVA(Sun ) ( ). (cross) (native). Unix, Win /NT (host) RTOS,. Cross. VxWorks, LynxOS, psos, VRTX. LynxOS HA(, High Availability). 160

25 Chapter 04 Self-Host. OS. X CPU. Production License(Runtime Fee). LynxOS, QNX, OS-. RTOS. RTOS POSIX, GUI, Internet Solution, JAVA. RTOS POSIX., JAVA,, RTOS. RTOS TCP/IP NFS, SLIP/PPP,,,.,. RTOS. LynxOS QNX Enterprise JVM, JAVA VRTX JAVA. JVM. POSIX, Win API ( : WinCE ). RTOS,., WinCE OS WinCE Car PC, PC, PC. 161

26 PART 1 RTOS. RTOS.,.. GUI WinCE JAVA, OS. RTOS C., RTOS. 162

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untitled Embedded System Lab. II Embedded System Lab. II 2 RTOS Hard Real-Time vs Soft Real-Time RTOS Real-Time, Real-Time RTOS General purpose system OS H/W RTOS H/W task Hard Real-Time Real-Time System, Hard