1-1 Embedded Software Development Tools and Processes Hardware & Software Hardware – Host development system Software – Compilers, simulators etc. Target systems  PC or similar with I/O cards  PC or similar with custom I/O  COTS(Commercial of the Shelf) boards  Custom designed boards, interfaces etc

1-2 Software Development Native Compiler – Host and Target same uP Cross Compiler – Host develops code for a different target uP Process  Edit source files – code versioning systems  compile to relocateable object code (*.obj files)  link & locate – link obj files with library code to produce absolute object code file.  convert object code to Intel hex format or other formats for programming memory device  Program target

1-3 Programming Target system Most programs stored in Flash memory On-Chip flash – in-circuit serial programming External memory devices – Separate programmer device required External programmer – parallel and gang programmers

1-4 Testing & Debugging Simulator – limited usage Monitor program – linked with application program, In- circuit emulator – less used nowadays Logic analyzer – more a hardware tool JTAG (Joint Test Action Group) emulation and debugging – used for microcontrollers and SOC's (system on chip) where uP is not directly accessable.

1-5 Testing & Debugging features Run program Step single instruction or single HLL statement Trace execution Monitor uP registers and memory contents Disassemble machine code to assembly language Watch variables (i.e. memory contents) Breakpoints – stop execution Advance breakpoints – conditional Code coverage and performance analysis Execute in realtime and capture information.