avr: bootloader partially works now but stops after 3 messages...

2025-01-20 23:47:13 +01:00
parent 0d7aca0060
commit 0a10d136d5
23 changed files with 398 additions and 1260 deletions
--- a/avr/modules/bootloader/main.asm
+++ b/avr/modules/bootloader/main.asm
@@ -0,0 +1,92 @@
+; ***************************************************************************
+; copyright   : (C) 2025 by Martin Preuss
+; email       : martin@libchipcard.de
+;
+; ***************************************************************************
+; * This file is part of the project "AqHome".                              *
+; * Please see toplevel file COPYING of that project for license details.   *
+; ***************************************************************************
+
+
+
+; ***************************************************************************
+; code
+
+.cseg
+
+
+
+BOOTLOADER_BEGIN:
+
+
+
+
+bootLoader:
+  cli
+  ; setup stack
+  .ifdef SPH               ; if SPH is defined
+    ldi r16, High(RAMEND)
+    out SPH, r16           ; init MSB stack pointer
+  .endif
+  ldi r16, Low(RAMEND)
+  out SPL, r16             ; init LSB stack pointer
+
+  ; start by setting all ports as inputs and enable internal pull-up resistors
+  ldi r16, 0xff
+  clr r17
+.ifdef PORTA
+  out DDRA, r17  ; all input
+  out PORTA, r16 ; enable pull-up on all
+.endif
+
+.ifdef PORTB
+  out DDRB, r17  ; all input
+  out PORTB, r16 ; enable pull-up on all
+.endif
+
+.ifdef PORTC
+  out DDRC, r17  ; all input
+  out PORTC, r16 ; enable pull-up on all
+.endif
+
+  rcall systemSetSpeed
+;  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
+  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
+  rjmp firmwareStart
+bootLoader_waitAndRestartBootLoader:
+  sbi LED_PORT, LED_PINNUM         ; off
+  ldi r16, 20
+  rcall flashWaitForMulti100ms
+  rjmp bootLoader
+
+
+
+bootClcRet:
+  clc
+bootRet:
+  ret
+
+bootSecRet:
+  sec
+  ret
+
+
+
+
+
+
+BOOTLOADER_END:
+.equ MODULE_SIZE_BOOTLOADER = BOOTLOADER_END-BOOTLOADER_BEGIN
+
+