Bootstrap and definition library for programming STM32L100RC in ARM assembler. This was a class project to learn ARM assembly
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6.6 KiB

;********************************************************************************
; FILE : INI_FLASH.S
; AUTHOR : Petr Dousa, Ondrej Hruska
; DATE : 10/2015
; DESCR : Control registers and bit masks for FLASH control
;
; FLASH, DATA EEPROM and Option Bytes Registers
; (FLASH, DATA_EEPROM, OB)
;
; Part of an assembler library for STM32L100, based on the STM32 CMSIS.
; Developed for educational purposes at the Department of Measure of CTU in Prague.
; See the LICENSE file for detailed terms of use.
;********************************************************************************
;****************************************************************************
;*
;* REGISTERS
;*
;****************************************************************************
; FLASH registers
FLASH_ACR EQU (_FLASH + 0x00) ; Access control register,
FLASH_PECR EQU (_FLASH + 0x04) ; Program/erase control register,
FLASH_PDKEYR EQU (_FLASH + 0x08) ; Power down key register,
FLASH_PEKEYR EQU (_FLASH + 0x0c) ; Program/erase key register,
FLASH_PRGKEYR EQU (_FLASH + 0x10) ; Program memory key register,
FLASH_OPTKEYR EQU (_FLASH + 0x14) ; Option byte key register,
FLASH_SR EQU (_FLASH + 0x18) ; Status register,
FLASH_OBR EQU (_FLASH + 0x1c) ; Option byte register,
FLASH_WRPR EQU (_FLASH + 0x20) ; Write protection register,
FLASH_WRPR1 EQU (_FLASH + 0x28) ; Write protection register 1,
FLASH_WRPR2 EQU (_FLASH + 0x2C) ; Write protection register 2,
; FLASH option bytes
OB_RDP EQU (_OB + 0x00) ; Read protection register,
OB_USER EQU (_OB + 0x04) ; user register,
OB_WRP01 EQU (_OB + 0x08) ; write protection register 0 1,
OB_WRP23 EQU (_OB + 0x0C) ; write protection register 2 3,
OB_WRP45 EQU (_OB + 0x10) ; write protection register 4 5,
OB_WRP67 EQU (_OB + 0x14) ; write protection register 6 7,
OB_WRP89 EQU (_OB + 0x18) ; write protection register 8 9,
OB_WRP1011 EQU (_OB + 0x1C) ; write protection register 10 11,
;****************************************************************************
;*
;* BIT MASKS AND DEFINITIONS
;*
;****************************************************************************
;****************** Bit definition for FLASH_ACR register *****************
FLASH_ACR_LATENCY EQU 0x00000001 ; Latency
FLASH_ACR_PRFTEN EQU 0x00000002 ; Prefetch Buffer Enable
FLASH_ACR_ACC64 EQU 0x00000004 ; Access 64 bits
FLASH_ACR_SLEEP_PD EQU 0x00000008 ; Flash mode during sleep mode
FLASH_ACR_RUN_PD EQU 0x00000010 ; Flash mode during RUN mode
;****************** Bit definition for FLASH_PECR register *****************
FLASH_PECR_PELOCK EQU 0x00000001 ; FLASH_PECR and Flash data Lock
FLASH_PECR_PRGLOCK EQU 0x00000002 ; Program matrix Lock
FLASH_PECR_OPTLOCK EQU 0x00000004 ; Option byte matrix Lock
FLASH_PECR_PROG EQU 0x00000008 ; Program matrix selection
FLASH_PECR_DATA EQU 0x00000010 ; Data matrix selection
FLASH_PECR_FTDW EQU 0x00000100 ; Fixed Time Data write for Word/Half Word/Byte programming
FLASH_PECR_ERASE EQU 0x00000200 ; Page erasing mode
FLASH_PECR_FPRG EQU 0x00000400 ; Fast Page/Half Page programming mode
FLASH_PECR_PARALLBANK EQU 0x00008000 ; Parallel Bank mode
FLASH_PECR_EOPIE EQU 0x00010000 ; End of programming interrupt
FLASH_PECR_ERRIE EQU 0x00020000 ; Error interrupt
FLASH_PECR_OBL_LAUNCH EQU 0x00040000 ; Launch the option byte loading
;***************** Bit definition for FLASH_PDKEYR register *****************
FLASH_PDKEYR_PDKEYR EQU 0xFFFFFFFF ; FLASH_PEC and data matrix Key
;***************** Bit definition for FLASH_PEKEYR register *****************
FLASH_PEKEYR_PEKEYR EQU 0xFFFFFFFF ; FLASH_PEC and data matrix Key
;***************** Bit definition for FLASH_PRGKEYR register *****************
FLASH_PRGKEYR_PRGKEYR EQU 0xFFFFFFFF ; Program matrix Key
;***************** Bit definition for FLASH_OPTKEYR register *****************
FLASH_OPTKEYR_OPTKEYR EQU 0xFFFFFFFF ; Option bytes matrix Key
;***************** Bit definition for FLASH_SR register ******************
FLASH_SR_BSY EQU 0x00000001 ; Busy
FLASH_SR_EOP EQU 0x00000002 ; End Of Programming
FLASH_SR_ENHV EQU 0x00000004 ; End of high voltage
FLASH_SR_READY EQU 0x00000008 ; Flash ready after low power mode
FLASH_SR_WRPERR EQU 0x00000100 ; Write protected error
FLASH_SR_PGAERR EQU 0x00000200 ; Programming Alignment Error
FLASH_SR_SIZERR EQU 0x00000400 ; Size error
FLASH_SR_OPTVERR EQU 0x00000800 ; Option validity error
FLASH_SR_OPTVERRUSR EQU 0x00001000 ; Option User validity error
FLASH_SR_RDERR EQU 0x00002000 ; Read protected error
;***************** Bit definition for FLASH_OBR register ******************
FLASH_OBR_RDPRT EQU 0x000000AA ; Read Protection
FLASH_OBR_SPRMOD EQU 0x00000100 ; Selection of protection mode of WPRi bits (available only in STM32L1xx Medium-density Plus devices)
FLASH_OBR_BOR_LEV EQU 0x000F0000 ; BOR_LEV[3:0] Brown Out Reset Threshold Level
FLASH_OBR_IWDG_SW EQU 0x00100000 ; IWDG_SW
FLASH_OBR_nRST_STOP EQU 0x00200000 ; nRST_STOP
FLASH_OBR_nRST_STDBY EQU 0x00400000 ; nRST_STDBY
FLASH_OBR_BFB2 EQU 0x00800000 ; BFB2(available only in STM32L1xx High-density devices)
;***************** Bit definition for FLASH_WRPR register *****************
FLASH_WRPR_WRP EQU 0xFFFFFFFF ; Write Protection bits
;***************** Bit definition for FLASH_WRPR1 register ****************
FLASH_WRPR1_WRP EQU 0xFFFFFFFF ; Write Protection bits (available only in STM32L1xx Medium-density Plus and High-density devices)
;***************** Bit definition for FLASH_WRPR2 register ****************
FLASH_WRPR2_WRP EQU 0xFFFFFFFF ; Write Protection bits (available only in STM32L1xx High-density devices)
END