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avr: t03 runs in basic mode now, flashing of AtTiny841 finally works!!

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This commit is contained in:
Martin Preuss
2025-01-25 03:16:02 +01:00
parent 779b37f195
commit e840bfd9e6
11 changed files with 916 additions and 342 deletions
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39
avr/modules/bootloader/main.asm
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@@ -53,25 +53,50 @@ bootLoader:
; rcall watchdogOff ; turn off watchdog timer (sometimes it stays on after reboot)
sbi LED_DDR, LED_PINNUM ; out
cbi LED_PORT, LED_PINNUM ; on
ldi r16, 30
rcall flashWaitForMulti100ms
sbi LED_PORT, LED_PINNUM ; off
ldi r19, 20 ; loop count
ldi r20, 2 ; on time
ldi r21, 2 ; off time
rcall bootLoaderBlinkLed
rcall checkFlash ; (r16, r17, r18, r19, r20, r22, x, y, z)
brcc bootLoader_startFirmware ; no flash process, try to start installed firmware
rcall flashProcess ; received a FLASH START msg, handle flashing
brcc bootLoader_waitAndRestartBootLoader
; try to start firmware
bootLoader_startFirmware:
cbi LED_PORT, LED_PINNUM ; on
ldi r19, 20 ; loop count
ldi r20, 4 ; on time
ldi r21, 1 ; off time
rcall bootLoaderBlinkLed
rjmp firmwareStart
bootLoader_waitAndRestartBootLoader:
sbi LED_PORT, LED_PINNUM ; off
ldi r16, 20
rcall flashWaitForMulti100ms
ldi r19, 15 ; loop count
ldi r20, 1 ; on time
ldi r21, 8 ; off time
rcall bootLoaderBlinkLed
rjmp bootLoader
; @param r19 loop count
; @param r20 on time
; @param r21 off time
; @clobbers (R16, R18, R22, R24, R25)
bootLoaderBlinkLed:
cbi LED_PORT, LED_PINNUM ; on
mov r16, r20
rcall flashWaitForMulti100ms ; (R16, R18, R22, R24, R25)
sbi LED_PORT, LED_PINNUM ; on
mov r16, r21
rcall flashWaitForMulti100ms ; (R16, R18, R22, R24, R25)
dec r19
brne bootLoaderBlinkLed
ret
bootClcRet:
clc
bootRet: