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;**** **** **** **** ****;; Bluejay digital ESC firmware for controlling brushless motors in multirotors;; Copyright 2020 Mathias Rasmussen; Copyright 2011, 2012 Steffen Skaug;; This file is part of Bluejay.;; Bluejay is free software: you can redistribute it and/or modify; it under the terms of the GNU General Public License as published by; the Free Software Foundation, either version 3 of the License, or; (at your option) any later version.;; Bluejay is distributed in the hope that it will be useful,; but WITHOUT ANY WARRANTY; without even the implied warranty of; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the; GNU General Public License for more details.;; You should have received a copy of the GNU General Public License; along with Bluejay. If not, see <http://www.gnu.org/licenses/>.
;;**** **** **** **** ****;; BLHeliTxPgm SiLabs;; EEPROM is not available in SiLabs MCUs; Therefore a segment of the flash is used as "EEPROM";;**** **** **** **** ****
;**** **** **** **** **** **** **** **** **** **** **** **** ****;; Read all eeprom parameters routine;; No assumptions;;**** **** **** **** **** **** **** **** **** **** **** **** ****read_all_eeprom_parameters: ; Check initialized signature mov DPTR, #Eep_Initialized_L mov Temp1, #Bit_Access call read_eeprom_byte mov A, Bit_Access cjne A, #055h, read_eeprom_store_defaults inc DPTR ; Now Eep_Initialized_H call read_eeprom_byte mov A, Bit_Access cjne A, #0AAh, read_eeprom_store_defaults jmp read_eeprom_read
read_eeprom_store_defaults: mov Flash_Key_1, #0A5h mov Flash_Key_2, #0F1h call set_default_parameters call erase_and_store_all_in_eeprom mov Flash_Key_1, #0 mov Flash_Key_2, #0 jmp read_eeprom_exit
read_eeprom_read: ; Read eeprom mov DPTR, #_Eep_Pgm_Gov_P_Gain mov Temp1, #_Pgm_Gov_P_Gain mov Temp4, #10read_eeprom_block1: call read_eeprom_byte inc DPTR inc Temp1 djnz Temp4, read_eeprom_block1
mov DPTR, #_Eep_Enable_TX_Program mov Temp1, #_Pgm_Enable_TX_Program mov Temp4, #26 ; 26 parametersread_eeprom_block2: call read_eeprom_byte inc DPTR inc Temp1 djnz Temp4, read_eeprom_block2
mov DPTR, #Eep_Dummy ; Set pointer to uncritical area
read_eeprom_exit: ret
;**** **** **** **** **** **** **** **** **** **** **** **** ****;; Erase flash and store all parameter value in EEPROM routine;; No assumptions;;**** **** **** **** **** **** **** **** **** **** **** **** ****erase_and_store_all_in_eeprom: clr IE_EA ; Disable interrupts call read_tags call erase_flash ; Erase flash
mov DPTR, #Eep_FW_Main_Revision ; Store firmware main revision mov A, #EEPROM_FW_MAIN_REVISION call write_eeprom_byte_from_acc
inc DPTR ; Now firmware sub revision mov A, #EEPROM_FW_SUB_REVISION call write_eeprom_byte_from_acc
inc DPTR ; Now layout revision mov A, #EEPROM_LAYOUT_REVISION call write_eeprom_byte_from_acc
; Write eeprom mov DPTR, #_Eep_Pgm_Gov_P_Gain mov Temp1, #_Pgm_Gov_P_Gain mov Temp4, #10write_eeprom_block1: call write_eeprom_byte inc DPTR inc Temp1 djnz Temp4, write_eeprom_block1
mov DPTR, #_Eep_Enable_TX_Program mov Temp1, #_Pgm_Enable_TX_Program mov Temp4, #26 ; 26 parameterswrite_eeprom_block2: call write_eeprom_byte inc DPTR inc Temp1 djnz Temp4, write_eeprom_block2
call write_tags call write_eeprom_signature mov DPTR, #Eep_Dummy ; Set pointer to uncritical area ret
;**** **** **** **** **** **** **** **** **** **** **** **** ****;; Read eeprom byte routine;; Gives data in A and in address given by Temp1. Assumes address in DPTR; Also assumes address high byte to be zero;;**** **** **** **** **** **** **** **** **** **** **** **** ****read_eeprom_byte: clr A movc A, @A+DPTR ; Read from flash mov @Temp1, A ret
;**** **** **** **** **** **** **** **** **** **** **** **** ****;; Write eeprom byte routine;; Assumes data in address given by Temp1, or in accumulator. Assumes address in DPTR; Also assumes address high byte to be zero;;**** **** **** **** **** **** **** **** **** **** **** **** ****write_eeprom_byte: mov A, @Temp1write_eeprom_byte_from_acc: orl PSCTL, #01h ; Set the PSWE bit anl PSCTL, #0FDh ; Clear the PSEE bit mov Temp8, A clr C mov A, DPH ; Check that address is not in bootloader area subb A, #1Ch jc ($+3)
ret
mov A, Temp8 mov FLKEY, Flash_Key_1 ; First key code mov FLKEY, Flash_Key_2 ; Second key code movx @DPTR, A ; Write to flash anl PSCTL, #0FEh ; Clear the PSWE bit ret
;**** **** **** **** **** **** **** **** **** **** **** **** ****;; Erase flash routine (erases the flash segment used for "eeprom" variables);; No assumptions;;**** **** **** **** **** **** **** **** **** **** **** **** ****erase_flash: orl PSCTL, #02h ; Set the PSEE bit orl PSCTL, #01h ; Set the PSWE bit mov FLKEY, Flash_Key_1 ; First key code mov FLKEY, Flash_Key_2 ; Second key code mov DPTR, #Eep_Initialized_L movx @DPTR, A anl PSCTL, #0FCh ; Clear the PSEE and PSWE bits ret
;**** **** **** **** **** **** **** **** **** **** **** **** ****;; Write eeprom signature routine;; No assumptions;;**** **** **** **** **** **** **** **** **** **** **** **** ****write_eeprom_signature: mov DPTR, #Eep_Initialized_L mov A, #055h call write_eeprom_byte_from_acc
mov DPTR, #Eep_Initialized_H mov A, #0AAh call write_eeprom_byte_from_acc ret
;**** **** **** **** **** **** **** **** **** **** **** **** ****;; Read all tags from flash and store in temporary storage;; No assumptions;;**** **** **** **** **** **** **** **** **** **** **** **** ****read_tags: mov Temp3, #48 ; Number of tags mov Temp2, #Temp_Storage ; Set RAM address mov Temp1, #Bit_Access mov DPTR, #Eep_ESC_Layout ; Set flash addressread_tag: call read_eeprom_byte mov A, Bit_Access mov @Temp2, A ; Write to RAM inc Temp2 inc DPTR djnz Temp3, read_tag ret
;**** **** **** **** **** **** **** **** **** **** **** **** ****;; Write all tags from temporary storage and store in flash;; No assumptions;;**** **** **** **** **** **** **** **** **** **** **** **** ****write_tags: mov Temp3, #48 ; Number of tags mov Temp2, #Temp_Storage ; Set RAM address mov DPTR, #Eep_ESC_Layout ; Set flash addresswrite_tag: mov A, @Temp2 ; Read from RAM call write_eeprom_byte_from_acc inc Temp2 inc DPTR djnz Temp3, write_tag ret
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