avr: added rtc module for ds3231

2026-03-15 20:20:06 +01:00
parent ce4a4afc68
commit 393df322f0
6 changed files with 420 additions and 0 deletions
--- a/avr/modules/rtc/ds3231/send.asm
+++ b/avr/modules/rtc/ds3231/send.asm
@@ -0,0 +1,113 @@
+; ***************************************************************************
+; copyright   : (C) 2026 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.   *
+; ***************************************************************************
+
+
+
+; ***************************************************************************
+; defs
+
+
+; ***************************************************************************
+; code
+
+.cseg
+
+
+; ---------------------------------------------------------------------------
+; @routine Ds3231_AnnounceTime
+;
+; @return CFLAG on success, cleared on error
+; @clobbers R16, R17, R18, R19, R20, R21, R23, R24, R25, X, Y, Z
+
+Ds3231_AnnounceTime:
+  ldi r22, 0xff
+  ldi r23, NETMSG_CMD_TIME_ANNOUNCE
+  clr r24
+  clr r25
+  rjmp ds3231SendTime
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine Ds3231RespondToSetTime
+;
+; @return CFLAG on success, cleared on error
+; @param r22     dest address
+; @param r25:r24 msg id/ref msg id
+
+Ds3231RespondToSetTime:
+  ldi r23, NETMSG_CMD_TIME_RSPSET
+  rjmp ds3231SendTime
+
+
+
+
+; ---------------------------------------------------------------------------
+; @routine ds3231SendTime
+;
+; @return CFLAG on success, cleared on error
+; @param r22     dest address
+; @param r23     command
+; @param r25:r24 msg id/ref msg id
+
+ds3231SendTime:
+  lds r16, ds3231Flags
+  clc
+  sbrs r16, DS3231_FLAGS_VALID_BIT
+    rjmp Ds3231_SendTime_ret
+
+  ; allocate network buffer
+  rcall NET_Buffer_Alloc                 ; (R16, R17, X)
+  brcc Ds3231_SendTime_ret
+
+  push r16                               ; buffer number
+    mov r16, r22
+    adiw xh:xl, 1
+    ldi yl, LOW(netInterfaceData)
+    ldi yh, HIGH(netInterfaceData)
+    ldi zl, LOW(ds3231RecvBuffer)
+    ldi zh, HIGH(ds3231RecvBuffer)
+    bigcall netMsgTimeWrite
+    sbiw xh:xl, 1
+  pop r16                                ; buffer number
+  rcall NET_Interface_AddOrReleaseOutMsg ; (R16, R17, R18, X)
+Ds3231_SendTime_ret:
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine ds3231SendDebug
+;
+; @return CFLAG on success, cleared on error
+
+ds3231SendDebug:
+  ; allocate network buffer
+  rcall NET_Buffer_Alloc                 ; (R16, R17, X)
+  brcc ds3231SendDebug_ret
+
+  push r16                               ; buffer number
+    mov r16, r22
+    adiw xh:xl, 1
+    ldi yl, LOW(netInterfaceData)
+    ldi yh, HIGH(netInterfaceData)
+
+    ldi r20, ds3231DataEnd-ds3231DataBegin
+    ldi zl, LOW(ds3231DataBegin)
+    ldi zh, HIGH(ds3231DataBegin)
+    bigcall NETMSG_Debug_Write2
+    sbiw xh:xl, 1
+  pop r16                                ; buffer number
+  rcall NET_Interface_AddOrReleaseOutMsg ; (R16, R17, R18, X)
+ds3231SendDebug_ret:
+  ret
+; @end
+