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Diffstat (limited to 'Bachelor/Mikroprozessorsysteme2/mi2/Termin5')
-rw-r--r--Bachelor/Mikroprozessorsysteme2/mi2/Termin5/Termin5.pdfbin0 -> 8847 bytes
-rw-r--r--Bachelor/Mikroprozessorsysteme2/mi2/Termin5/Termin5Aufgabe1.c22
-rw-r--r--Bachelor/Mikroprozessorsysteme2/mi2/Termin5/Termin5Aufgabe3.c44
-rw-r--r--Bachelor/Mikroprozessorsysteme2/mi2/Termin5/boot.S405
-rw-r--r--Bachelor/Mikroprozessorsysteme2/mi2/Termin5/frank_micsys2_praktikum05.zipbin0 -> 35136 bytes
-rw-r--r--Bachelor/Mikroprozessorsysteme2/mi2/Termin5/makefile59
-rw-r--r--Bachelor/Mikroprozessorsysteme2/mi2/Termin5/ser_io.S57
-rw-r--r--Bachelor/Mikroprozessorsysteme2/mi2/Termin5/seriell.S73
-rw-r--r--Bachelor/Mikroprozessorsysteme2/mi2/Termin5/swi.S34
9 files changed, 694 insertions, 0 deletions
diff --git a/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/Termin5.pdf b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/Termin5.pdf
new file mode 100644
index 0000000..c054ab6
--- /dev/null
+++ b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/Termin5.pdf
Binary files differ
diff --git a/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/Termin5Aufgabe1.c b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/Termin5Aufgabe1.c
new file mode 100644
index 0000000..1c545be
--- /dev/null
+++ b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/Termin5Aufgabe1.c
@@ -0,0 +1,22 @@
+// LProgrammrahmen zur Aufgabe Termin5
+// Aufgabe 1
+//************************************
+//
+// von: Manfred Pester
+// vom: 06. August 2003
+// letzte Änderung: 30. November 2004
+// von: Manfred Pester
+
+int main(void)
+{
+
+ inits();
+// CR und LF auf das Terminal ausgeben
+ putchar (0xd);
+ putchar (0xa);
+
+// String ausgeben
+ puts("Hallo! \n");
+
+ return 0;
+}
diff --git a/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/Termin5Aufgabe3.c b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/Termin5Aufgabe3.c
new file mode 100644
index 0000000..94fb6eb
--- /dev/null
+++ b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/Termin5Aufgabe3.c
@@ -0,0 +1,44 @@
+// Programmrahmen zur Aufgabe3 vom Termin5 WS2004
+// Aufgabe 3
+//***********************************************
+//
+// von: Manfred Pester
+// vom: 06. August 2003
+// letzte Änderung: 30. November 2004
+// von: Manfred Pester
+
+void Int2String(int Zahl)
+{
+ int a,i=9;
+ char string[11];
+ string[10]='\0';
+
+ while (Zahl != 0)
+ {
+ a = Zahl % 10;
+ string[i] = a + '0'; // in Char umrechnen
+ Zahl = Zahl / 10;
+ i--;
+ }
+ puts(&string[i+1]);
+}
+
+
+int main(void)
+{
+ int Zahl = 12345;
+
+ inits();
+
+// CR und LF auf das Terminal ausgeben
+ putchar (0xd);
+ putchar (0xa);
+
+// String ausgeben
+ puts("Hallo! \n");
+
+ Int2String(Zahl);
+
+
+ return 0;
+}
diff --git a/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/boot.S b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/boot.S
new file mode 100644
index 0000000..c7c8d83
--- /dev/null
+++ b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/boot.S
@@ -0,0 +1,405 @@
+@-----------------------------------------------------------------------------
+@- File source : boot.S
+@- Object : Bootfile fuer Praktikum
+@-
+@- 1.0 17/09/02 GR : Creation
+@- letzte Änderung : 11/11/02
+@------------------------------------------------------------------------------
+
+#include "aic.inc"
+#include "ebi.inc"
+
+@------------------------------------------------------------------------------
+@- Area Definition
+@-----------------
+@- Must be defined as function to put first in the code as it must be mapped
+@- at SRAM.
+@------------------------------------------------------------------------------
+
+ .text
+
+
+ .global _start
+@------------------------------------------------------------------------------
+@- Define the entry point
+@------------------------
+_start:
+
+@------------------------------------------------------------------------------
+@- Exception vectors
+@------------------------------------------------------------------------------
+
+Reset: B InitReset @ reset
+undefvec: B undefvec @ Undefined Instruction
+swivec: B swivec @ Software Interrupt
+pabtvec: B pabtvec @ Prefetch Abort
+dabtvec: B dabtvec @ Data Abort
+rsvdvec: B rsvdvec @ reserved
+irqvec: B irqvec @ reserved
+fiqvec: B fiqvec @ reserved
+
+@------------------------------------------------------------------------------
+@- Exception vectors ( after cstartup execution )
+@------------------------------------
+@- These vectors are read at RAM address after the remap command is performed in
+@- the EBI. As they will be relocated at address 0x0 to be effective, a
+@- relative addressing is forbidden. The only possibility to get an absolute
+@- addressing for an ARM vector is to read a PC relative value at a defined
+@- offset. It is easy to reserve the locations 0x20 to 0x3C (the 8 next
+@- vectors) for storing the absolute exception handler address.
+@- The AIC vectoring access vectors are saved in the interrupt and fast
+@- interrupt ARM vectors. So, only 5 offsets are required ( reserved vector
+@- offset is never used).
+@- The provisory handler addresses are defined on infinite loop and can be
+@- modified at any time.
+@- Note also that the reset is only accessible by a jump from the application
+@- to 0. It is an actual software reset.
+@- As the 13 first location are used by the vectors, the read/write link
+@- address must be defined from 0x34 if internal data mapping is required.
+@- (use for that the option -rw- base=0x34
+@------------------------------------------------------------------------------
+
+VectorTable:
+ ldr pc, [pc, #0x18] @ SoftReset
+ ldr pc, [pc, #0x18] @ UndefHandler
+ ldr pc, [pc, #0x18] @ SWIHandler
+ ldr pc, [pc, #0x18] @ PrefetchAbortHandler
+ ldr pc, [pc, #0x18] @ DataAbortHandler
+ nop @ Reserved
+ ldr pc, [pc,#-0xF20] @ IRQ : read the AIC
+ ldr pc, [pc,#-0xF20] @ FIQ : read the AIC
+
+@- There are only 5 offsets as the vectoring is used.
+ .word _SoftReset
+ .word _UndefHandler
+ .word SWIHandler
+ .word _PrefetchAbortHandler
+ .word _DataAbortHandler
+
+@- Vectoring Execution function run at absolut addresss
+_SoftReset: b _SoftReset
+_UndefHandler: b _UndefHandler
+_SWIHandler: b _SWIHandler
+_PrefetchAbortHandler: b _PrefetchAbortHandler
+_DataAbortHandler: b _DataAbortHandler
+
+
+
+InitTableEBI:
+ .word EBI_CSR_0
+ .word EBI_CSR_1
+ .word EBI_CSR_2
+ .word EBI_CSR_3
+ .word EBI_CSR_4
+ .word EBI_CSR_5
+ .word EBI_CSR_6
+ .word EBI_CSR_7
+ .word 0x00000001 @ REMAP command
+ .word 0x00000006 @ 6 memory regions, standard read
+PtEBIBase:
+ .word EBI_BASE @ EBI Base Address
+
+@------------------------------------------------------------------------------
+@- The reset handler before Remap
+@--------------------------------
+@- From here, the code is executed from SRAM address
+@------------------------------------------------------------------------------
+InitReset:
+
+@------------------------------------------------------------------------------
+@- Speed up the Boot sequence
+@----------------------------
+@- After reset, the number os wait states on chip select 0 is 8. All AT91
+@- Evaluation Boards fits fast flash memories, so that the number of wait
+@- states can be optimized to fast up the boot sequence.
+@- ICE note :For ICE debug no need to set the EBI value these values already set
+@- by the boot function.
+@------------------------------------------------------------------------------
+@- Load System EBI Base address and CSR0 Init Value
+ ldr r0, PtEBIBase
+ ldr r1, InitTableEBI @ values (relative)
+
+@- Speed up code execution by disabling wait state on Chip Select 0
+ str r1, [r0]
+
+@------------------------------------------------------------------------------
+@- low level init
+@----------------
+@ Call __low_level_init to perform initialization before initializing
+@ AIC and calling main.
+@----------------------------------------------------------------------
+
+@ bl __low_level_init
+
+
+@------------------------------------------------------------------------------
+@- Reset the Interrupt Controller
+@--------------------------------
+@- Normally, the code is executed only if a reset has been actually performed.
+@- So, the AIC initialization resumes at setting up the default vectors.
+@------------------------------------------------------------------------------
+@- Load the AIC Base Address and the default handler addresses
+
+ adr r0, AicData @ @ where to read values (relative)
+
+ ldmia r0, {r1-r4}
+
+@- Setup the Spurious Vector
+ str r4, [r1, #AIC_SPU] @ r4 = spurious handler
+
+
+@ - ICE note : For ICE debug
+@ - Perform 8 End Of Interrupt Command to make sure AIC will not lock out nIRQ
+ mov r0, #8
+LoopAic0:
+ str r1, [r1, #AIC_EOICR] @ any value written
+ subs r0, r0, #1
+ bhi LoopAic0
+
+@- Reset Interrupts
+ mov r0, #0
+ sub r0, r0, #1 @ all bits set
+ str r0, [r1, #AIC_IDCR]
+ str r0, [r1, #AIC_ICCR]
+
+@- Set up the default interrupt handler vectors
+ str r2, [r1, #AIC_SVR] @ SVR[0] for FIQ
+ add r1, r1, #AIC_SVR
+ mov r0, #31 @ counter
+LoopAic1:
+ str r3, [r1, r0, LSL #2] @ SVRs for IRQs
+ subs r0, r0, #1 @ do not save FIQ
+ bhi LoopAic1
+
+ b EndInitAic
+
+@- Default Interrupt Handlers
+AicData:
+ .word AIC_BASE @ AIC Base Address
+@------------------------------------------------------------------------------
+@- Default Interrupt Handler
+@---------------------------
+@- These function are defined in the AT91 library. If you want to change this
+@- you can redifine these function in your appication code
+@------------------------------------------------------------------------------
+
+PtDefaultHandler:
+ .word at91_default_fiq_handler
+ .word at91_default_irq_handler
+ .word at91_spurious_handler
+
+at91_default_fiq_handler: B at91_default_fiq_handler
+at91_default_irq_handler: B at91_default_irq_handler
+at91_spurious_handler: B at91_spurious_handler
+
+EndInitAic:
+
+@------------------------------------------------------------------------------
+@- Setup Exception Vectors in Internal RAM before Remap
+@------------------------------------------------------
+@- That's important to perform this operation before Remap in order to guarantee
+@- that the core has valid vectors at any time during the remap operation.
+@- Note: There are only 5 offsets as the vectoring is used.
+@- ICE note : In this code only the start address value is changed if you use
+@- without Semihosting.
+@- Before Remap the internal RAM it's 0x300000
+@- After Remap the internal RAM it's 0x000000
+@- Remap it's already executed it's no possible to write to 0x300000.
+@------------------------------------------------------------------------------
+@- Copy the ARM exception vectors
+
+ mov r0, #0x28
+ adr r1, Init_Vector
+ str r1,[r0]
+ mov r0, #0x08
+ adr r1, VectorTable+8
+ ldr r1,[r1]
+ str r1,[r0]
+ swi 0
+
+@ The RAM_BASE = 0 it's specific for ICE
+
+ RAM_BASE = 0
+Init_Vector:
+ mov r8, #RAM_BASE @ @ of the hard vector after remap in internal RAM 0x0
+
+ adr r9, VectorTable @ where to read values (relative)
+ ldmia r9!, {r0-r7} @ read 8 vectors
+
+ stmia r8!, {r0-r7} @ store them
+
+ ldmia r9!, {r0-r4} @ read 5 absolute handler addresses
+ stmia r8!, {r0-r4} @ store them
+
+@------------------------------------------------------------------------------
+@- Initialise the Memory Controller
+@----------------------------------
+@- That's principaly the Remap Command. Actually, all the External Bus
+@- Interface is configured with some instructions and the User Interface Image
+@- as described above. The jump "mov pc, r12" could be unread as it is after
+@- located after the Remap but actually it is thanks to the Arm core pipeline.
+@- The IniTableEBI addressing must be relative .
+@- The PtInitRemap must be absolute as the processor jumps at this address
+@- immediatly after the Remap is performed.
+@- Note also that the EBI base address is loaded in r11 by the "ldmia".
+@- ICE note :For ICE debug these values already set by the boot function and the
+@- Remap it's already executed it's no need to set still.
+@------------------------------------------------------------------------------
+@- Copy the Image of the Memory Controller
+ adr r10, InitTableEBI @ get the address of the chip select register image
+ ldr r12, PtInitRemap @ get the real jump address ( after remap )
+
+@- Copy Chip Select Register Image to Memory Controller and command remap
+ ldmia r10!, {r0-r9,r11} @ load the complete image and the EBI base
+ stmia r11!, {r0-r9} @ store the complete image with the remap command
+
+@- Jump to ROM at its new address
+ mov pc, r12 @ jump and break the pipeline
+
+PtInitRemap:
+ .word InitRemap @ address where to jump after REMAP
+
+@------------------------------------------------------------------------------
+@- The Reset Handler after Remap
+@-------------------------------
+@- From here, the code is continous execute from its link address.
+@------------------------------------------------------------------------------
+
+InitRemap:
+
+@--------------------------------
+@- ARM Core Mode and Status Bits
+@--------------------------------
+
+ARM_MODE_USER = 0x10
+ARM_MODE_FIQ = 0x11
+ARM_MODE_IRQ = 0x12
+ARM_MODE_SVC = 0x13
+ARM_MODE_ABORT = 0x17
+ARM_MODE_UNDEF = 0x1B
+ARM_MODE_SYS = 0x1F
+
+I_BIT = 0x80
+F_BIT = 0x40
+T_BIT = 0x20
+
+@------------------------------------------------------------------------------
+@- Stack Sizes Definition
+@------------------------
+@- Interrupt Stack requires 3 words x 8 priority level x 4 bytes when using
+@- the vectoring. This assume that the IRQ_ENTRY/IRQ_EXIT macro are used.
+@- The Interrupt Stack must be adjusted depending on the interrupt handlers.
+@- Fast Interrupt is the same than Interrupt without priority level.
+@- Other stacks are defined by default to save one word each.
+@- The System stack size is not defined and is limited by the free internal
+@- SRAM.
+@- User stack size is not defined and is limited by the free external SRAM.
+@------------------------------------------------------------------------------
+
+IRQ_STACK_SIZE = (3*8*4) @ 3 words per interrupt priority level
+FIQ_STACK_SIZE = (3*4) @ 3 words
+ABT_STACK_SIZE = (1*4) @ 1 word
+UND_STACK_SIZE = (1*4) @ 1 word
+
+@------------------------------------------------------------------------------
+@- Top of Stack Definition
+@-------------------------
+@- Fast Interrupt, Interrupt, Abort, Undefined and Supervisor Stack are located
+@- at the top of internal memory in order to speed the exception handling
+@- context saving and restoring.
+@- User (Application, C) Stack is located at the top of the external memory.
+@------------------------------------------------------------------------------
+RAM_BASE = 0
+RAM_SIZE = (2*1024)
+RAM_LIMIT = (RAM_BASE+RAM_SIZE)
+EXT_SRAM_BASE = 0x02000000
+EXT_SRAM_SIZE = 0x00040000 @ 256Kbytes
+EXT_SRAM_LIMIT = (EXT_SRAM_BASE+EXT_SRAM_SIZE)
+
+TOP_EXCEPTION_STACK = RAM_LIMIT @ Defined in part
+TOP_APPLICATION_STACK = EXT_SRAM_LIMIT @ Defined in Target
+
+@------------------------------------------------------------------------------
+@- Setup the stack for each mode
+@-------------------------------
+ ldr r0, =TOP_EXCEPTION_STACK
+
+@- Set up Fast Interrupt Mode and set FIQ Mode Stack
+ msr CPSR_c, #ARM_MODE_FIQ | I_BIT |F_BIT
+ mov r13, r0 @ Init stack FIQ
+ sub r0, r0, #FIQ_STACK_SIZE
+
+@- Set up Interrupt Mode and set IRQ Mode Stack
+ msr CPSR_c, #ARM_MODE_IRQ | I_BIT |F_BIT
+ mov r13, r0 @ Init stack IRQ
+ sub r0, r0, #IRQ_STACK_SIZE
+
+@- Set up Abort Mode and set Abort Mode Stack
+ msr CPSR_c, #ARM_MODE_ABORT | I_BIT | F_BIT
+ mov r13, r0 @ Init stack Abort
+ sub r0, r0, #ABT_STACK_SIZE
+
+@- Set up Undefined Instruction Mode and set Undef Mode Stack
+ msr CPSR_c, #ARM_MODE_UNDEF | I_BIT | F_BIT
+ mov r13, r0 @ Init stack Undef
+ sub r0, r0, #UND_STACK_SIZE
+
+@- Set up Supervisor Mode and set Supervisor Mode Stack
+ msr CPSR_c, #ARM_MODE_SVC | I_BIT | F_BIT
+ mov sp, r0 @ Init stack Sup
+@------------------------------------------------------------------------------
+@- Setup Application Operating Mode and Enable the interrupts
+@------------------------------------------------------------
+@- System Mode is selected first and the stack is setup. This allows to prevent
+@- any interrupt occurence while the User is not initialized. System Mode is
+@- used as the interrupt enabling would be avoided from User Mode (CPSR cannot
+@- be written while the core is in User Mode).
+@------------------------------------------------------------------------------
+ msr CPSR_c, #ARM_MODE_USER @ set User mode
+ ldr sp, =TOP_APPLICATION_STACK @ Init stack User
+
+@------------------------------------------------------------------------------
+@- Initialise C variables
+@------------------------
+@- Following labels are automatically generated by the linker.
+@- RO: Read-only = the code
+@- RW: Read Write = the data pre-initialized and zero-initialized.
+@- ZI: Zero-Initialized.
+@- Pre-initialization values are located after the code area in the image.
+@- Zero-initialized datas are mapped after the pre-initialized.
+@- Note on the Data position :
+@- If using the ARMSDT, when no -rw-base option is used for the linker, the
+@- data area is mapped after the code. You can map the data either in internal
+@- SRAM ( -rw-base=0x40 or 0x34) or in external SRAM ( -rw-base=0x2000000 ).
+@- Note also that to improve the code density, the pre_initialized data must
+@- be limited to a minimum.
+@------------------------------------------------------------------------------
+
+ ldr r3, = __bss_start__ @ Zero init base => top of init
+NoRW: ldr r1, = __bss_end__ @ Top of zero init segment
+ mov r2, #0
+LoopZI: cmp r3, r1 @ Zero init
+ strcc r2, [r3], #4
+ bcc LoopZI
+
+
+
+@------------------------------------------------------------------------------
+@- Branch on C code Main function (with interworking)
+@----------------------------------------------------
+@- Branch must be performed by an interworking call as either an ARM or Thumb
+@- main C function must be supported. This makes the code not position-
+@- independant. A Branch with link would generate errors
+@------------------------------------------------------------------------------
+
+ bl main
+
+@------------------------------------------------------------------------------
+@- Loop for ever
+@---------------
+@- End of application. Normally, never occur.
+@- Could jump on Software Reset ( B 0x0 ).
+@------------------------------------------------------------------------------
+End:
+ b End
+ .END
diff --git a/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/frank_micsys2_praktikum05.zip b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/frank_micsys2_praktikum05.zip
new file mode 100644
index 0000000..7771896
--- /dev/null
+++ b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/frank_micsys2_praktikum05.zip
Binary files differ
diff --git a/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/makefile b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/makefile
new file mode 100644
index 0000000..ff54938
--- /dev/null
+++ b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/makefile
@@ -0,0 +1,59 @@
+# Vorschlag eines Makefile zu Termin5 WS2004
+
+FILE = Termin5Aufgabe3
+Opti = 0
+all:
+
+# Übersetzen der Quelldatei
+ arm-elf-gcc -c -g -O$(Opti) $(FILE).c -I ../h
+
+# Erzeugen der Assemblerdatei aus der Quelldatei
+ arm-elf-gcc -S -o$(Opti) $(FILE).c -I ../h
+
+# Erzeugen der benötitgen Objektdateien
+ arm-elf-gcc -c -g -O$(Opti) ../boot/swi.S -o swi.o -I ../h
+# eigener SoftWareInterrupt-Handler
+ arm-elf-gcc -c -g -O$(Opti) swi.S -o swi.o -I ../h
+ arm-elf-gcc -c -g -O$(Opti) ../boot/boot_ice.S -o boot_ice.o -I ../h
+ arm-elf-gcc -c -g -O$(Opti) ../boot/boot_flash.S -o boot_flash.o -I ../h
+ arm-elf-gcc -c -g -O$(Opti) seriell.S -I ../h
+ arm-elf-gcc -c -g -O$(Opti) ser_io.S -I ../h
+ arm-elf-gcc -c -g -O$(Opti) boot.S -I ../h
+
+
+# Binden für die RAM-Version
+ arm-elf-ld -Ttext 0x02000000 -O$(Opti) boot_ice.o swi.o seriell.o ser_io.o $(FILE).o -o $(FILE).elf /gnutools/lib/gcc-lib/arm-elf/3.3.2/libgcc.a
+# arm-elf-ld -Ttext 0x02000000 -O$(Opti) boot_ice.o swi.o $(FILE).o -o $(FILE).elf /gnutools/lib/gcc-lib/arm-elf/3.3.2/libgcc.a
+# arm-elf-ld -Ttext 0x02000000 -O$(Opti) boot_ice.o swi.o $(FILE).o -o $(FILE).elf
+
+# Linkerskripte noch nicht getestet
+# arm-elf-ld -T ldscript.ram boot.o swi.o seriell.o ser_io.o swi.o $(FILE).o -o $(FILE).elf /gnutools/lib/gcc-lib/arm-elf/3.2.2/libgcc.a
+
+# Binden für die FLASH-Version
+# arm-elf-ld -Ttext 0x1000000 boot.o swi.o $(FILE).o -o $(FILE).out /gnutools/lib/gcc-lib/arm-elf/3.3.2/libgcc.a
+# arm-elf-ld -Ttext 0x1000000 boot_flash.o swi.o $(FILE).o -o $(FILE).out
+
+# Linkerskripte noch nicht getestet
+# arm-elf-ld -T ldscript.rom boot.o seriell.o ser_io.o swi.o $(FILE).o -o $(FILE).out /gnutools/lib/gcc-lib/arm-elf/3.2.2/libgcc.a
+
+# -I --input-target <bfdname> Assume input file is in format <bfdname>
+# -O --output-target <bfdname> Create an output file in format <bfdname>
+# -S --strip-all Remove all symbol and relocation information
+# -x --discard-all Remove all non-global symbols
+# -N --strip-symbol <name> Do not copy symbol <name>
+# -O --output-target <bfdname> Create an output file in format <bfdname>
+# -g --strip-debug Remove all debugging symbols
+# arm-elf-objcopy -I elf32-littlearm -O binary -x -S -N -g $(FILE).out $(FILE).rom
+
+# programm.rom nach /tftpboot/downlaod.bin kopieren <cp name.rom /tftpboot/download.bin>
+# Jumper E7 muß auf STD stecken
+# Mit <telnet 141.100.xxx.xxx> mit dem BDI2000 verbinden.
+# mit <erase 0x1100000> flash-Bereich löschen
+# mit <prog 0x1100000 download.bin bin> Programm ins flash schreiben.
+#
+#
+clean:
+ rm *.o
+ rm *.s
+ rm *.elf
+ rm *.rom
diff --git a/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/ser_io.S b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/ser_io.S
new file mode 100644
index 0000000..a8f76a8
--- /dev/null
+++ b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/ser_io.S
@@ -0,0 +1,57 @@
+@----------------------------------------------------------------------------
+@ File Name : ser_io.S
+@ Object : Ein- Ausgabe-Funktionen der seriellen Schnittstelle
+@
+@ Namen : Matr.-Nr.:
+@ : Matr.-Nr.:
+@
+@----------------------------------------------------------------------------
+
+@ Debuginformationen
+ .file "ser_io.S"
+
+@ Funktion
+ .text
+ .align 2
+ .global inits
+ .type inits,function
+inits:
+ stmfd sp!,{lr} @ Retten der Register
+ swi 0
+ ldmfd sp!,{pc} @ Rücksprung
+
+@ Funktion
+ .text
+ .align 2
+ .global puts
+ .type puts,function
+puts:
+ stmfd sp!,{lr} @ Retten der Register
+
+// Hier muß Ihr Code eingefügt werden.
+ mov r5, r0 @ Anfangsadresse des kompletten Strings von r0 nach r5 kopieren
+loop: ldrb r0, [r5], #1 @ Holen des Zeichens der Adresse in r5 nach r0 und erhöhe dann Adresse in r5
+ cmp r0, #0 @ Ende des Strings? entspricht binärer Null
+ beq L1 @ Wenn Stringende erreicht
+ swi 1 @ Auslösen der SWI Methode putchar (swi + offset)
+ b loop @ weiter bei loop solange Stringende nicht erreicht
+L1:
+ mov r0, #0x0d @ Carriage Return
+ swi 1 @ Auslösen der SWI Methode putchar (swi + offset)
+ mov r0, #0x0a @ Linefeed
+ swi 1 @ Auslösen der SWI Methode putchar (swi + offset)
+ ldmfd sp!,{pc} @ Rücksprung
+
+@ Funktion
+ .text
+ .align 2
+ .global gets
+ .type gets,function
+gets:
+ stmfd sp!,{lr} @ Retten der Register
+
+// Hier könnte Ihr Code eingefügt werden!
+
+ ldmfd sp!,{pc} @ Rücksprung
+
+.end
diff --git a/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/seriell.S b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/seriell.S
new file mode 100644
index 0000000..9560075
--- /dev/null
+++ b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/seriell.S
@@ -0,0 +1,73 @@
+@----------------------------------------------------------------------------
+@ File Name : seriell.S
+@ Object : Grundfunktionen der seriellen Schnittstelle
+@
+@ 1.0 27/10/02 GR : Creation
+@----------------------------------------------------------------------------
+
+ .file "seriell.S"
+
+#include "../h/pmc.inc"
+#include "../h/pio.inc"
+#include "../h/usart.inc"
+
+DEFAULT_BAUD = 38400
+CLOCK_SPEED = 25000000
+US_BAUD = 0x29 @ CLOCK_SPEED / (16*(DEFAULT_BAUD))
+
+@ Funktion
+ .text
+ .align 2
+ .global init_ser
+ .type init_ser,function
+init_ser:
+ stmfd sp!, {r0-r3, lr} @ Register retten
+ adr r0,L1
+ adr r1,L1_end
+init_ser_loop:
+ ldmia r0!, {r2-r3}
+ cmp r0, r1
+ str r3, [r2]
+ bne init_ser_loop
+ ldmfd sp!, {r0-r3, pc} @ Rücksprung
+L1:
+ .word PMC_BASE+PMC_PCER, 0x4
+ .word PIOA_BASE+PIO_PDR, 0x18000
+ .word USART0_BASE+US_CR, 0xa0
+ .word USART0_BASE+US_MR, 0x8c0
+ .word USART0_BASE+US_BRGR, US_BAUD
+ .word USART0_BASE+US_CR, 0x50
+L1_end:
+
+@ Funktion
+ .text
+ .align 2
+ .global putchar
+ .type putchar,function
+putchar:
+ stmfd sp!, {r0-r2, lr} @ Register retten
+ ldr r2, =USART0_BASE
+1:
+ ldr r1, [r2, #US_CSR]
+ tst r1, #US_TXRDY @ ist Transmitter frei
+ beq 1b
+ str r0, [r2,#US_THR]
+ ldmfd sp!, {r0-r2, pc} @ Rücksprung
+
+@ Funktion
+ .text
+ .align 2
+ .global getchar
+ .type getchar,function
+getchar:
+ stmfd sp!, {r1, r2, lr} @ Register retten
+ ldr r2, =USART0_BASE
+
+1:
+ ldr r1, [r2, #US_CSR]
+ ands r1, r1, #US_RXRDY
+ beq 1b
+ ldr r0, [r2, #US_RHR]
+ ldmfd sp!, {r1, r2, pc} @ Rücksprung
+
+.end
diff --git a/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/swi.S b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/swi.S
new file mode 100644
index 0000000..09d5cc4
--- /dev/null
+++ b/Bachelor/Mikroprozessorsysteme2/mi2/Termin5/swi.S
@@ -0,0 +1,34 @@
+@----------------------------------------------------------------------------
+@ File Name : swi.S
+@ Object : SoftwareInterruptHandler
+@
+@ 1.0 27/10/02 GR : Creation
+@
+@----------------------------------------------------------------------------
+
+
+ .global SWIHandler
+ .text
+SWIHandler:
+
+ ldr sp, STACK @ den Wert von STACK (0x78c) auf sp kopieren
+ stmfd sp!, {lr} @ retten der Rücksprungadresse
+ ldr ip,[r14, #-4] @ hole "swi X" Aufruf in ip (lr steht auf Aufruf nach swi Befehl im aufrufenden Programm)
+ bic ip, ip, #0xff000000 @ maskiere X aus und speichere in ip
+ mov ip, ip, lsl #2 @ X ist in ip, X * 4 (entspricht lsl #2) ist Offset des swi
+ ldr lr, =SWIJumpTable @ Lade Adresse von SWIJumpTable in lr
+ ldr ip, [lr, ip] @ Addiere ip (Offset des SWI) zu Adresse SWIJumpTable und speichere in ip
+ mov lr, pc @ Speichere pc in lr für Rücksprung
+ mov pc, ip @ Lade ip nach pc, entspricht Sprung in jeweilige SWI-Routine
+ ldmfd sp!, {pc}^ @ Rücksprung
+STACK:
+ .word 0x78c
+
+SWIJumpTable:
+ .word init_ser
+ .word putchar
+ .word getchar
+.end
+
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2026-01-17 16:11:29 +0000