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FISH_STM32F4_FLASH.s
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// FISH_STM32F4_FLASH.s
// Valid thru v1.7.2
// FLASH_SAVE, FLASH_FORGET, FLASH_SCAN and support :NONAME's
/* 2DO:
// FLASH_SAVE LEAVING HERE ON STACK
---
// SAVE PAGE IF ENOUGH ROOM LEFT FOR THIS SAVE
FLPT:
// NOT IMPLEMENTED YET!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
---
// DETERMINE IF ASSUREPAGE NEEDED, IF SO REWRITE AND INCORPORATE
---
// MAKE IRQ Wordcat AND ADD:
//:NONAME CMSIS_DISABLE_IRQS ( -- )
//:NONAME CMSIS_ENABLE_IRQS ( -- )
*/
// FLASH_SAVE FLASH_SAVE: ( -- ) Save RAM to Flash
// EVERY SAVE HAS A HEADER SET FOR FLASH_SCAN TO USE
// ALIGNED HERE IS BOUNDARY OF NEW WRITE
// SAVES ARE CONTIGUOUS WORDS USING x32 WRITE SETTING
SECTION .text : CONST (2)
FLASH_SAVE_NFA:
DC8 0x80+10
DC8 'FLASH_SAV'
DC8 'E'+0x80
ALIGNROM 2,0xFFFFFFFF
DC32 WC_IRQ_NFA
FLASH_SAVE:
DC32 DOCOL
// SOMETHING TO SAVE TEST - IF LATEST IS NOT IN ROM
DC32 LATEST, DBASE, LESSTHAN
DC32 ZBRAN
DC32 FLPT-.
DC32 CR
DC32 PDOTQ
DC8 15D
DC8 'NOTHING TO SAVE'
ALIGNROM 2,0xFFFFFFFF
DC32 SEMIS
// SINGLE ENTRY FROM ABOVE
// SAVE PAGE IF ENOUGH ROOM LEFT FOR THIS SAVE
FLPT:
// NOT IMPLEMENTED YET!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
DC32 FPADDR, AT
DC32 LIT, FLASH_PPAGE
DC32 EQUAL
// DC32 NOOP
DC32 ZBRAN // then save it
DC32 FSAVE-.
FSLASTPAGE:
DC32 CR
DC32 PDOTQ
DC8 20D
DC8 'LAST FLASH AVAIL USED' // 'NOT ENOUGH MEMORY'
ALIGNROM 2,0xFFFFFFFF
DC32 SEMIS
// Setup for saving - Assumes no error in relocation
// Based on relocating UP and Latest to FPVAR and FPCURR
FSAVE:
// MAKE SURE HERE IS ALIGNED
DC32 ALIGN32_DP_FF_PAD
// FPA SHOULD BE SET BY FLASH_SCAN IN WARM OR BY FISH OR FISH_ONLY
// FPCURR AND FPVAR SAVE
DC32 UP_SV, AT, FPVAR, STORE
DC32 LATEST, TOFA
// DC32 LATEST, TOFRA ALL RELOCS NEED TO ADD TO BASE!
DC32 FPCURR, STORE
// KEEP RELOCATING ONE WORD AT A TIME UNTIL RECHING FIRST WORD (DBASE)
FS_BEGIN:
DC32 LATEST, DBASE, EQUAL
DC32 ZBRAN
DC32 FS_RWORD-.
// AFTER LAST WORD RELOCATED
FS_WRITE:
DC32 FLASHWRITE // Write page
DC32 DBASE, DP_SV, STORE // Reset DP
DC32 FPVAR, AT, UP_SV, STORE // and UP
DC32 FPCURR, AT, CURRENT_SV, STORE // and CURRENT to nothing in RAM
// FLASH_SAVE Finish
FS_EXIT:
DC32 FLASH_SCAN // Show Save done via Flash Page status
DC32 CR, DOTVARSPACE, DOTDICTSPACE
DC32 SEMIS
FS_RWORD:
DC32 LATEST, RWORD // Relocate this word, unlink it
DC32 BRAN // Repeat until LATEST = DBASE
DC32 FS_BEGIN-.
//:NONAME FPADDR: ( -- addr ) Flash Page Addreess to operate on.
SECTION .text : CONST (2)
FPADDR:
DC32 DOCON, FPA
//:NONAME FPCURR: ( -- addr ) Flash Page CURRENT is NFA of last word saved in Flash.
SECTION .text : CONST (2)
FPCURR:
DC32 DOCON, FPC
//:NONAME FPVAR: ( -- addr ) Flash Page VAR is UP value when Flash page saved.
SECTION .text : CONST (2)
FPVAR:
DC32 DOCON, FPSV
//:NONAME >FA TOFA: ( addr -- raddr ) Relocate address relative to FPADDR.
// Convert WORD addresses to flash using FPADDR, which must be initialized.
SECTION .text : CONST (2)
TOFA:
DC32 .+5
SECTION .text : CODE (2)
POP2t
LDR w, = 0x0FFFFF // 08100000 FLASH ADDR lIMIT
ANDS t, t, w // Strip RAM address
LDR w, = FPA
LDR w, [w] // Get Flash save start address
ADDS t, t, w // add offset
TPUSH
LTORG //Always outside of code, else data in words
//:NONAME RWORD: ( nfa -- ) Relocate this word relative to FPADDR
// Relocate word specified by it's NFA to FPADDR relative addresses
// Handle case of CON/VAR, PDOTQ and LIT by not relocating them.
// RLIT's WILL BE RELOCATED - LIT's WILL NOT.
SECTION .text : CONST (2)
RWORD:
DC32 DOCOL
DC32 PFA, DUP, TOR // SAVE FOR RELOCATING LFA
DC32 CFA // REAL CFA OF THSI WORD
CFA_CREATE_DOES_GOTO:
DC32 DUP, AT
DC32 LIT, CREATE_DOES_GOTO
DC32 EQUAL
DC32 ZBRAN // IF NOT CREATE_DOES_GOTO
DC32 RW_DOCONVAR-. // PROCESS WORD UNTIL SEMIS
DC32 FOURP, DUP, DUP // INCR TO ADDR
DC32 AT, TOFA // TO RELOCATE
DC32 SWAP, STORE // AND
DC32 BRAN // THEN
DC32 RW_UNTIL-. // DONE SO GO FIX LFA
RW_DOCONVAR:
// CHECK FOR DOCON AND DOVAR
DC32 DUP, AT
DC32 LIT, DOCON
DC32 EQUAL
DC32 OVER, AT // COPY CFA AGAIN
DC32 LIT, DOVAR
DC32 EQUAL
DC32 OR
DC32 ZBRAN // IF NOT DOCON OR DOVAR
DC32 RW_BEGIN-. // PROCESS WORD UNTIL SEMIS
// IS DOCON OR DOVAR
DC32 DROP // CFA
DC32 BRAN
DC32 RW_LFA-. // THIS WORD DONE - FIX LFA
// CFA -- BECOMES EACH WORD IN BODY OF THIS DEFINITION
RW_BEGIN:
DC32 FOURP, DUP, AT // Next WORD in body to evaluate
CFA_LIT:
DC32 LIT, LIT, EQUAL
DC32 ZBRAN // IF NOT LITERAL
DC32 CFA_PDOTQ-. // CHECK FOR PDOTQ
// IS LITERAL SO SKIP OVER IT'S DATA
DC32 FOURP
DC32 BRAN
DC32 RW_BEGIN-.
CFA_PDOTQ:
DC32 DUP, AT
DC32 LIT, PDOTQ, EQUAL
DC32 ZBRAN // IF NOT PDOTQ
DC32 CFA_SEMIS-. // LOOK FOR SEMIS
// PDOTQ SO BYPASS TEXT AND LOOK FOR NEXT WORD IN THIS DEFINITION
DC32 DUP, FOURP, CAT
DC32 PLUS
DC32 ALIGNED
DC32 BRAN
DC32 RW_BEGIN-.
CFA_SEMIS:
DC32 DUP, AT // USE THIS AS UNTIL FLAG TO FINISH
DC32 LIT, SEMIS, EQUAL
DC32 ZEQU, ZBRAN // IF AT SEMIS
DC32 RW_UNTIL-. // DONE SO GO FIX LFA
RELOCATE_RAM_ADDR:
// NOT AT SEMIS - IF A RAM ADDRESS THEN IT's OK TO RELOCATE!
DC32 DUP, AT // IF THIS IS NOT IN RAM
DC32 DBASE, GREATERTHAN
DC32 ZBRAN // THEN CHECK NEXT WORD IN THIS DEFINITION
DC32 RW_BEGIN-.
// THIS IS A RAM ADDRESS THAT NEEDS TO BE RELOCATED TO A FLASH ADDRESS
// LIT's were left alone but RLIT value will be relocated here
DC32 DUP, DUP, AT // PICKUP RAM ADDRESS
DC32 TOFA // RELOCATE THIS ADDRESS TO A FLASH ADDRESS
DC32 SWAP, STORE // PUT IT BACK
DC32 BRAN
DC32 RW_BEGIN-. // THEN CHECK NEXT WORD IN THIS DEFINITION
RW_UNTIL:
// ADDRESS OF SEMI IN THIS DEFINITION
DC32 DROP // COME FROM SEMIS MATCH
RW_LFA: // RELOCATE LFA AND SET CURRENT/LATEST TO Next WORD
DC32 RFROM // PFA OF THIS DEFINITION
DC32 LFA, DUP, AT // GET ADDR OF LFA AND NFA IT POINTS TO
DC32 DUP // AND STORE NEXT NFA TO
DC32 CURRENT_SV, STORE // CURRENT
DC32 TOFA, SWAP, STORE // AND THIS DEF'S LFA
DC32 SEMIS
//------------------------------------------------------------------------------
//:NONAME FLASH_SCAN: ( -- ) SCAN FLASH FOR SAVED CODE
// Patch in FLASH_SAVE'd Code.
SECTION .text : CONST (2)
FLASH_SCAN:
DC32 DOCOL
// FLASH_PPAGE can be reserved and Hard_fault if accessed!
DC32 LIT, FLASH_SPAGE // Start at first page available
CHECK_NEXT_FLASH_SAVE:
DC32 DUP, LIT, FPA, STORE
DC32 DUP, TOR // EACH SAVE
DC32 AT // Verify SYSCLK signature
DC32 SYSCLK
DC32 SUBB // ZBRAN IF SYSCLK FOUND
DC32 ZBRAN // = HEADER OF SAVED CODE
DC32 LINK_FLASHCODE_SEGMENT-.
// NO CODE FOUND TO LINK EXIT
DC32 RFROM, DROP, SEMIS
LINK_FLASHCODE_SEGMENT:
// PAGE PASSES SYSCLK VERIFICATION, LINK IT
DC32 R, FPADDR, STORE
DC32 R, LIT, 8, PLUS // FPCURR
DC32 DUP, AT
DC32 CURRENT_SV // TO DP
DC32 STORE
DC32 FOURP, AT // FPVAR
DC32 UP_SV, STORE // TO UP
DC32 CR
DC32 PDOTQ
DC8 23D
DC8 'ADDED WORDS FROM ADDR '
ALIGNROM 2,0xFFFFFFFF
DC32 R, DOTHEX
DC32 RFROM, FOURP, AT // NEXT FPADDR TO CHECK FOR CODE!
DC32 BRAN
DC32 CHECK_NEXT_FLASH_SAVE-.
//:NONAME ASSUREPAGE: ( fpa -- next-fpa) Verify this Flash page has code or is empty.
// Make sure PAGE IN fpa page is erased and let user know what you do.
// NOT TESTED YET: erase this page and tell user<<<<<<<<<<<<<<<<<<<<<<<<<<<
// 2 STACK ITEMS LEFT ON EXIT, BOTH ARE fpa+1000H LIKE WHATS PUT ON r<<<<<<<<<<<
SECTION .text : CONST (2)
ASSUREPAGE:
DC32 DOCOL // verified ONLY fpa ON STACK Here
DC32 DUP // -- fpa fpa
// DC32 LIT, FLASH_WR_SIZE // PAGE SIZE WERE WRITING
DC32 PLUS
DC32 TOR // End of this page
DC32 DUP // Begin -- fpa fpa
APNEXT:
DC32 AT // Should be -1 -- fpa
DC32 ONEP // if so
DC32 ZBRAN // -- addr 0|BADFLASHVALUE
DC32 APCONT-. // keep going
// ERASE THIS PAGE // -- fpa
// DC32 FLASHPREP
// DC32 FLASHESEC
DC32 CR
DC32 PDOTQ
DC8 23D
DC8 'ERASED BAD FLASH PAGE '
ALIGNROM 2,0xFFFFFFFF
DC32 DOTHEX
// DC32 CR, DOTS // DEBUG
DC32 DROP
DC32 RFROM, DROP
DC32 SEMIS
// SO FAR SO GOOD
APCONT: // -- addr
DC32 FOURP, DUP // -- addr addr
DC32 DUP, R, SWAP // -- addr r addr
DC32 SUBB // End of this Page?
DC32 ZBRAN // -- addr f
DC32 APGOOD-.
DC32 BRAN
DC32 APNEXT-.
APGOOD: // addr
DC32 CR
DC32 PDOTQ
DC8 14D
DC8 'FLASH PAGE OK '
ALIGNROM 2,0xFFFFFFFF
// DC32 DROP, LIT, FLASH_WR_SIZE // PAGE SIZE WERE WRITING
DC32 SUBB
DC32 DOTHEX
APDONE:
DC32 RFROM, DROP
DC32 SEMIS
//------------------------------------------------------------------------------
// FLASH_FORGET FLASH_FORGET: ( -- ) Erase All User Flash Pages
SECTION .text : CONST (2)
FLASH_FORGET_NFA:
DC8 0x80+12
DC8 'FLASH_FORGE'
DC8 'T'+0x80
ALIGNROM 2,0xFFFFFFFF
DC32 FLASH_SAVE_NFA
FLASH_FORGET:
DC32 DOCOL
DC32 PDOTQ
DC8 23D
DC8 'TAKES ABOUT 6 SECONDS! '
ALIGNROM 2,0xFFFFFFFF
DC32 CMSIS_DISABLE_IRQS
DC32 FLASH_UNLOCK
DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
// Erase sector at a time
// ?Break this out to a primitive looping from sector 4/5 to 11
// 4 Words / 32 bytes per sector erase - 7 = 28 words / 112 bytes
// Sector 4 is 64k, sector 0-3 are 16k, together they equal 1rst 128k of flash.
// 5 to 11 are the 7 other 128k sectors that amount to the full 1mb of flash.
// 01 is start 02 is x32 2 is 4th sector 2 is sector erase
// 5 3 LSL 2 + .H 2Ah ok, go fish in BASE 10d
// 6 3 LSL 2 + .H 32h ok, go fish in BASE 10d
// 7 3 LSL 2 + .H 3Ah ok, go fish in BASE 10d
// 8 3 LSL 2 + .H 42h ok, go fish in BASE 10d
// DC32 strva, 010222h, FLASH_CR // erase sector 4 0x08010000h
// DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
DC32 strva, 01022Ah, FLASH_CR // erase sector 5 0x08020000h
DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
DC32 strva, 010232h, FLASH_CR // erase sector 6 0x08040000h
DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
DC32 strva, 01023Ah, FLASH_CR // erase sector 7 0x08060000h
DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
DC32 strva, 010242h, FLASH_CR // erase sector 8 0x08080000h
DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
DC32 strva, 01024Ah, FLASH_CR // erase sector 9 0x080A0000h
DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
DC32 strva, 010252h, FLASH_CR // erase sector 10 0x080C0000h
DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
DC32 strva, 01025Ah, FLASH_CR // erase sector 11 0x080E0000h
DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
// Lock Flash again
DC32 FLASH_LOCK // Top bit = Lock
DC32 CMSIS_ENABLE_IRQS
// RESET DICTIONARY and FLASH POINTERS APPROPRIATELY
FF_FINISH:
// IF NO WORDS IN RAM TEST
DC32 RBASE, LATEST // If Latest is GT RBASE ( Latest is in ram )
DC32 GREATERTHAN // This will be zero
DC32 ZBRAN // Meaning there are
DC32 RAMWORDS-. // words in Ram
// RESET ALL POINTERS
DC32 FISH_ONLY // No words so clean up
// RESET FPA
DC32 BRAN
DC32 FFDONE-.
// Preserve words in ram exit point.
RAMWORDS:
// DC32 LIT, TASK_NFA // Fish WITH TASKER IN RAM starts here
#ifdef FISH_PubRel_WORDSET
DC32 LIT, WC_FISH_PubRel_NFA // FISH in flash starts here
#endif
#ifdef FISH_NXP_M0_PRO_WORDCAT
DC32 LIT, WC_FISH_PRO_NFA // OR HERE
#endif
DC32 DBASE, PFA, LFA // RELINK THIS lfa, i.e.
DC32 STORE // repatch to Fish in flash
// FLASH_FORGET Finish
FFDONE:
DC32 strva, FLASH_SPAGE, FPA
DC32 LIT, 11111111h, DUP, FPCURR, STORE, FPVAR, STORE
// Show results
DC32 FLASH_SCAN // Verify Erase done via *no* Flash Page status
DC32 CR, DOTVARSPACE, DOTDICTSPACE
DC32 SEMIS
//--------------------- Flash code copied to ram test --------------------------
//:NONAME FLASH_TCODE_COPY ( End Start -- ) Copy Flash code to ram
SECTION .text : CONST (2)
FLASH_TCODE_COPY:
DC32 .+5
SECTION .text : CODE (2)
ALIGNROM 2,0xFFFFFFFF
POP2t // LDR t, =FLASH_TCODE_START
POP2n // LDR n, =FLASH_TCODE_END
LDR w, =FLASH_CODE_SRAM2_START
FLASH_COPY_LOOP:
LDR y, [t], #4
STR y, [w], #4
cmp t, n
BNE FLASH_COPY_LOOP
NEXT
// Each one will use FLASH_RAMCODE_EXEC after copying it's code to ram..
//:NONAME FLASH_RAMCODE_EXEC ( -- )
SECTION .text : CONST (2)
FLASH_RAMCODE_EXEC:
DC32 LIT, FLASH_CODE_SRAM2_START
DC32 EXEC
DC32 SEMIS
// Prototype for each function
//:NONAME FLASH_TEST_RAMCODE ( -- )
SECTION .text : CONST (2)
FLASH_TEST_CODE_IN_RAM:
DC32 DOCOL
DC32 LIT, FLASH_TCODE_END
DC32 LIT, FLASH_TCODE_START
DC32 FLASH_TCODE_COPY
DC32 FLASH_RAMCODE_EXEC
DC32 SEMIS
//:NONAME FLASHWRITE: ( -- ) Save Ram to Flash using FPADDR and valid HERE.
// Header need to be completed at this point.
// FPADDR needs to be Flash HERE, where the next save goes.
// But current FPADDR must be uused for save
SECTION .text : CONST (2)
FLASHWRITE:
DC32 DOCOL
/* THIS WAS ADDED BECAUSE 2ND SAVE BOMBED WITH FPCURR -> HEADER NOT DBASE START
// SET FPCURR TO NEW LATEST
DC32 FPADDR, AT
DC32 LIT, 16, PLUS
DC32 FPCURR, STORE
DC32 NOOP
*/
DC32 CMSIS_DISABLE_IRQS
DC32 FLASH_UNLOCK
DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
// Set PSIZE to x32 and the Program Start bit
DC32 strva, 0201h, FLASH_CR // x32 & start programming
// SAVE FPA AS HEADER ADDR
DC32 FPADDR, AT, TOR /// SAVE FPA HEADER ADDR
// BUMP FPA TO DICT OFFSET
DC32 LIT, 16, FPADDR, PSTORE // SET FPA PAST HEADER
// COPY DBASE TO HERE TO FLASH
// AFTER RWORD IS HERE VALID????
DC32 HERE, TOR // length of save
DC32 DBASE
// DC32 RBASE
FLASH_WRITE_LOOP:
DC32 DUP, AT // GET DICT
DC32 FPADDR, AT // FLASH
DC32 STORE, FLASH_NOT_BSY // WRITE & VERIFY NOT BUSY
DC32 FOUR, FPADDR, PSTORE // INC FPA
DC32 FOURP // INC DICT
DC32 DUP, R, SUBB // EQUAL HERE YET?
DC32 ZBRAN
DC32 FLASH_WRITE_EXIT_LOOP-.
DC32 BRAN
DC32 FLASH_WRITE_LOOP-.
FLASH_WRITE_EXIT_LOOP:
DC32 RFROM
DC32 DROP, DROP // THE FPADDR AND HERE LIMIT
// WRITE HEADER WITH ORIGINAL FPA ( 4 WORDS )
// NEW FPA SET HERE - DOES IT NEED 4+ BUMP HERE?
// FPVAR AND FPCURR SET IN CALLING FUNCTION - FLASH_SAVE
// DEFINE SRBASE DC32 SRBASE, AT, R // WRITE SYSCLK
DC32 LIT, RAM_START, AT, R // GET SYSCLK AND
DC32 STORE, FLASH_NOT_BSY // WRITE & VERIFY NOT BUSY
DC32 FPADDR, AT // NEW FPADDR
DC32 R, FOURP
DC32 STORE, FLASH_NOT_BSY // WRITE & VERIFY NOT BUSY
DC32 FPCURR, AT // HAVE TO MAKE FPCURR
// DC32 LIT, 16, PLUS // PAST HEADER
DC32 R, EIGHT, PLUS
DC32 STORE, FLASH_NOT_BSY // WRITE & VERIFY NOT BUSY
DC32 FPVAR, AT, RFROM, LIT, 12, PLUS
DC32 STORE, FLASH_NOT_BSY // WRITE & VERIFY NOT BUSY
FLASH_WRITE_FINISH:
DC32 FLASH_LOCK // Top bit = Lock
DC32 CMSIS_ENABLE_IRQS
DC32 SEMIS
//--------------------- Flash code copied to ram test --------------------------
FLASH_TCODE_START:
// WORDS and CODE to evaluate for copying to RAM ( for each flash function ).
//:NONAME FLASH_TEST_CODE_IN_FLASH: ( -- )
SECTION .text : CONST (2)
FLASH_TEST_CODE_IN_FLASH:
DC32 DOCOL
DC32 FLASH_FORGET // Atomic Primitive: erase all user sectors
DC32 CMSIS_DISABLE_IRQS
DC32 FLASH_UNLOCK
DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
// Set PSIZE to x32 and the Program Start bit
DC32 strva, 0201h, FLASH_CR // x32 & start programming
DC32 strva, 08020000h, FPA
DC32 LIT, 16, DP_SV, PSTORE
DC32 NOOP
DC32 FLASHWRITE
DC32 NOOP
DC32 FLASH_FORGET // Atomic Primitive: erase all user sectors
/* Write and erase test
// User Code Flash Save starts in sector 5, the 1rst of 7 128k sectors
DC32 strva, -3, 08020000h // The beginning of sector 5
DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
DC32 strva, -4, 08040000h // The beginning of sector 6
DC32 FLASH_NOT_BSY // VERIFY NOT BUSY
DC32 NOOP
DC32 FLASH_FORGET // Atomic Primitive: erase all user sectors
*/
DC32 FLASH_LOCK // Top bit = Lock
DC32 CMSIS_ENABLE_IRQS
// Lock Flash again
DC32 SEMIS
SECTION .text : CONST (2)
FLASH_NOT_BSY:
DC32 .+5
SECTION .text : CODE (2)
ALIGNROM 2,0xFFFFFFFF
LDR n, =FLASH_SR // 40023C00h is FLASH CTRL 40023C0Ch is FLASH_SR
_WaitBsy10:
LDR t, [n]
LSLS t, t, #16 // BSY - Bit 16
BCS _WaitBsy10
NEXT
// Commit literal constants to pool to be copied!
LTORG
//:NONAME FLASH_UNLOCK ( -- ) // Unlock Flash Programming Functionality
SECTION .text : CONST (2)
FLASH_UNLOCK:
DC32 DOCOL
DC32 strva, 045670123h, FLASH_KEYR // Key1
DC32 strva, 0CDEF89ABh, FLASH_KEYR // Key2
DC32 SEMIS
//:NONAME FLASH_LOCK ( -- ) // Lock Flash Programming Functionality
SECTION .text : CONST (2)
FLASH_LOCK:
DC32 DOCOL
// SETBITS SETBITS: ( addr val -- ) OR val bits into addr.
// DC32 LIT, FLASH_CR, LIT, 080000000h, SETBITS // Preserve other bits
DC32 strva, 080000000h, FLASH_CR // Top bit = Lock
DC32 SEMIS
FLASH_TCODE_END: