From 604734b6e30ba6e098a2a0711049aa76dfbf7a7d Mon Sep 17 00:00:00 2001
From: Martin Preuss <martin@aquamaniac.de>
Date: Thu, 22 Jan 2026 00:06:09 +0100
Subject: [PATCH] avr: minor changes.

---
 avr/common/eeprom-r.asm               |  1 -
 avr/common/eeprom-w.asm               |  2 ++
 avr/common/eeprom_tlv.asm             | 32 +++++++++++++--------------
 avr/devices/c03/main/main.asm         | 16 +++++++++++++-
 avr/modules/lcd2/gui2/sensorwatch.asm |  6 -----
 5 files changed, 33 insertions(+), 24 deletions(-)

diff --git a/avr/common/eeprom-r.asm b/avr/common/eeprom-r.asm
index 464e6b3..a9e36aa 100644
--- a/avr/common/eeprom-r.asm
+++ b/avr/common/eeprom-r.asm
@@ -48,7 +48,6 @@ Eeprom_ReadByte_waitLoop:
     sbi EECR, EERE           ; start EEPROM read by writing EERE
     in r16, EEDR             ; read data from data register
 
-Eeprom_ReadByte_done:
     outr SREG, r15
   pop r15
   sec
diff --git a/avr/common/eeprom-w.asm b/avr/common/eeprom-w.asm
index 602d03d..88f6ffa 100644
--- a/avr/common/eeprom-w.asm
+++ b/avr/common/eeprom-w.asm
@@ -55,6 +55,8 @@ Eeprom_WriteByte_waitLoop:
   ; write data
 .ifdef EEPM1
   ldi r17, (0<<EEPM1) | (0<<EEPM0) ; set programming mode
+.else
+  clr r17
 .endif
   out EECR, r17
   out EEARH, xh                    ; set EEPROM address
diff --git a/avr/common/eeprom_tlv.asm b/avr/common/eeprom_tlv.asm
index 906863b..cf5acca 100644
--- a/avr/common/eeprom_tlv.asm
+++ b/avr/common/eeprom_tlv.asm
@@ -37,17 +37,17 @@ EepromTlv_AddTlv:
   add xl, r21                     ; wanted size
   adc xh, r21
   sub xh, r21
-  rcall Eeprom_CheckAddr          ; check end address
+  rcall Eeprom_CheckAddr          ; check end address (R16)
   brcc EepromTlv_AddTlv_end
   sub xl, r21
   sbc xh, r21
   add xh, r21
-  sbiw xh:xl, 2
+  sbiw xh:xl, 2                   ; go back to begin of TLV
   mov r16, r20                    ; type
-  rcall Eeprom_WriteByte
+  rcall Eeprom_WriteByte          ; (R17)
   adiw xh:xl, 1
   mov r16, r21                    ; length
-  rcall Eeprom_WriteByte
+  rcall Eeprom_WriteByte          ; (R17)
   adiw xh:xl, 1
   sec
   rjmp EepromTlv_AddTlv_end
@@ -74,13 +74,13 @@ EepromTlv_AddTlv_end:
 EepromTlv_FindFirst:
   ldi xl, LOW(EEPROM_OFFS_TLV)
   ldi xh, HIGH(EEPROM_OFFS_TLV)
-  rjmp EepromTlv_Find
+  rjmp eepromTlvFind
 ; @end
 
 
 
 ; ---------------------------------------------------------------------------
-; @routine EepromTlv_Find @global
+; @routine eepromTlvFind @global
 ;
 ; @param r16 TLV type to find
 ; @param X EEPROM address to start search
@@ -90,23 +90,23 @@ EepromTlv_FindFirst:
 ; @return X points to begin of TLV data
 ; @clobbers r18
 
-EepromTlv_Find:
+eepromTlvFind:
   mov r18, r16
-EepromTlv_Find_loop:
-    rcall EepromTlv_ReadHeader     ; (none)
-    brcc EepromTlv_Find_notFound
+eepromTlvFind_loop:
+    rcall EepromTlv_ReadHeader     ; r16=type, r17=len (none)
+    brcc eepromTlvFind_notFound
     cp r16, r18                    ; the one we wanted?
-    breq EepromTlv_Find_found
+    breq eepromTlvFind_found
     add xl, r17                    ; skip TLV data
     adc xh, r17
     sub xh, r17
-  rjmp EepromTlv_Find_loop
-EepromTlv_Find_notFound:
+  rjmp eepromTlvFind_loop
+eepromTlvFind_notFound:
   clc
-  rjmp EepromTlv_Find_end
-EepromTlv_Find_found:
+  rjmp eepromTlvFind_end
+eepromTlvFind_found:
   sec
-EepromTlv_Find_end:
+eepromTlvFind_end:
   ret
 ; @end
 
diff --git a/avr/devices/c03/main/main.asm b/avr/devices/c03/main/main.asm
index 3c2b5b5..5d18193 100644
--- a/avr/devices/c03/main/main.asm
+++ b/avr/devices/c03/main/main.asm
@@ -286,7 +286,21 @@ test:
   ldi xl, 9   ; node address
   ldi xh, 2   ; value 0x02 (SI7021_HUM)
   bigcall OBJ_HandleSignal
-  
+
+
+#if 0
+  ldi xl, LOW(EEPROM_OFFS_TLV)
+  ldi xh, HIGH(EEPROM_OFFS_TLV)
+eeloop:
+    bigcall Eeprom_CheckAddr
+    brcc eeloop_end
+    ldi r16, 0xff
+    bigcall Eeprom_WriteByte
+    adiw xh:xl, 1
+  rjmp eeloop
+eeloop_end:
+#endif
+
   ret
 
 
diff --git a/avr/modules/lcd2/gui2/sensorwatch.asm b/avr/modules/lcd2/gui2/sensorwatch.asm
index 8970ede..e62f591 100644
--- a/avr/modules/lcd2/gui2/sensorwatch.asm
+++ b/avr/modules/lcd2/gui2/sensorwatch.asm
@@ -531,13 +531,9 @@ sensorWatchWriteToEeprom:
   tst r16
   clc
   breq sensorWatchWriteToEeprom_ret
-  ldi xl, LOW(EEPROM_OFFS_TLV)
-  ldi xh, HIGH(EEPROM_OFFS_TLV)
   bigcall EepromTlv_FindFirst                    ; (R18)
   brcs sensorWatchWriteToEeprom_write
   ldi r17, SENSORWATCH_EE_SIZE
-  ldi xl, LOW(EEPROM_OFFS_TLV)
-  ldi xh, HIGH(EEPROM_OFFS_TLV)
   bigcall EepromTlv_AddTlv                       ; X=pointer to EEPROM data (R16, R18, R20, R21)
   brcc sensorWatchWriteToEeprom_ret
 sensorWatchWriteToEeprom_write:
@@ -569,8 +565,6 @@ sensorWatchReadFromEeprom:
   adiw zh:zl, SENSORWATCH_OFFS_EEPROMID
   lpm r16, Z
   sbiw zh:zl, SENSORWATCH_OFFS_EEPROMID
-  ldi xl, LOW(EEPROM_OFFS_TLV)
-  ldi xh, HIGH(EEPROM_OFFS_TLV)
   bigcall EepromTlv_FindFirst                    ; (R18)
   brcc sensorWatchReadFromEeprom_ret
   bigcall Widget_GetSdramPtr                     ; (none)