aqhome-nodes: send heartbeat message to interface every 2mins.

e02 now expects this message. If for at least 10mins no such msg is
received the USB interface is reset.

avr/devices/e02/defs.asm

@@ -108,3 +108,13 @@
 .equ  USART0_DATAREG   = UDR0
 .equ  USART1_DATAREG   = UDR1
 
+
+; ---------------------------------------------------------------------------
+; MCP2221
+
+.equ MCP2221_RESET_DDR    = DDRB
+.equ MCP2221_RESET_PORT   = PORTB
+.equ MCP2221_RESET_PINNUM = PORTB0
+
+
+

avr/devices/e02/main/main.asm

@@ -72,30 +72,12 @@
 #define APP_ROUTER_NO_ADDR_MGR
 
 #define MODULES_CLOCK
-;#define MODULES_COM
-;#define MODULES_COM_WITH_ADDR_PROTO
-;#define MODULES_LED
 #define MODULES_LED_SIMPLE
-;#define MODULES_LED_SIGNAL
-;#define MODULES_LED_ACTIVITY
-;#define MODULES_TWI_MASTER
-;#define MODULES_LCD
-;#define LCD_MINIMAL_FONT
-;#define MODULES_SI7021
-;#define MODULES_STATS
-;#define MODULES_CNY70
-;#define MODULES_REED
-;#define MODULES_OWI_MASTER
-;#define MODULES_DS18B20
-;#define MODULES_MOTION
 #define MODULES_NETWORK
 #define MODULES_COM2W
-;#define MODULES_COMONUART0
-;#define MODULES_TTYONUART1
 #define MODULES_UARTFD0
+
 #define APPS_STATS
-;#define APPS_NETWORK
-;#define APPS_ROUTER
 #define APPS_FORWARDER
 
 
@@ -106,14 +88,17 @@
 
 
 
+.equ HEARTBEAT_MAXTIME_IN_MINS = 10 ; 10 minutes
+
+.equ LEDMCPRESET_ONTIME  = 2
+.equ LEDMCPRESET_OFFTIME = 2
+.equ LEDMCPRESET_REPEATS = 50  ; 50*0.4=20s
+
 
 ; ---------------------------------------------------------------------------
 ; defines for values
 
-.equ VALUE_ID_DS18B20_TEMP     = 0x06
-
-.equ VALUE_ID_LEDSIMPLE_TIMING = 0x88
-;.equ VALUE_ID_ROUTER_SETRANGE  = 0x89
+; none
 
 
 
@@ -187,6 +172,30 @@ onSystemStart:
   ldi r16, 0xf0
   sts netInterfaceData+NET_IFACE_OFFS_ADDRESS, r16
   sts netInterfaceData2+NET_IFACE_OFFS_ADDRESS, r16
+
+  ldi r16, HEARTBEAT_MAXTIME_IN_MINS
+  sts heartbeatTimer, r16
+  
+  rcall resetMcp2221
+
+  ret
+; @end
+
+
+
+onEveryMinute:
+  lds r16, heartbeatTimer
+  tst r16
+  breq onEverySecond_ret
+  dec r16
+  sts heartbeatTimer, r16
+  brne onEverySecond_ret
+  
+  rcall resetMcp2221
+  
+  ldi r16, HEARTBEAT_MAXTIME_IN_MINS
+  sts heartbeatTimer, r16
+onEverySecond_ret:
   ret
 ; @end
 
@@ -194,7 +203,6 @@ onSystemStart:
 
 onEvery100ms:
 onEverySecond:
-onEveryMinute:
 onEveryHour:
 onEveryDay:
   ret
@@ -218,12 +226,48 @@ onEveryLoop:
 ; Called on every message received
 
 onMessageReceived:
+  adiw xh:xl, NETMSG_OFFS_CMD
+  ld r16, X
+  sbiw xh:xl, NETMSG_OFFS_CMD
+  cpi r16, NETMSG_CMD_HEARTBEAT
+  brne onMessageReceived_ret
+  ldi r16, HEARTBEAT_MAXTIME_IN_MINS
+  sts heartbeatTimer, r16
+onMessageReceived_ret:
   clc
   ret
 ; @end
 
 
 
+; ---------------------------------------------------------------------------
+; @routine resetMcp2221
+;
+; Reset MCP2221 by pulling /RST low for 10us.
+
+resetMcp2221:
+  push r15
+    inr r15, SREG
+    cli
+    sbi MCP2221_RESET_DDR, MCP2221_RESET_PINNUM  ; out
+    cbi MCP2221_RESET_PORT, MCP2221_RESET_PINNUM ; set RST low
+    Utils_WaitNanoSecs 10000, 0, r22             ; minimum is 2us, use 10us to be safe
+    sbi MCP2221_RESET_PORT, MCP2221_RESET_PINNUM ; set RST high
+    outr SREG, r15
+  pop r15
+
+#ifdef MODULES_LED_SIMPLE
+  ldi r18, LEDMCPRESET_ONTIME
+  ldi r19, LEDMCPRESET_OFFTIME
+  ldi r20, LEDMCPRESET_REPEATS
+  bigcall LedSimple_SetTiming
+#endif
+
+  ret
+; @end
+
+
+
 
 
 
@@ -249,3 +293,16 @@ deviceCodeEnd:
     .warning "Code reaches into boot loader!"
   .endif
 
+
+
+
+; ***************************************************************************
+; data segment
+
+.dseg
+
+heartbeatTimer: .byte 1
+
+
+
+

avr/modules/network/msg/defs.asm

@@ -17,6 +17,7 @@
 
 .equ NETMSG_CMD_PING                   = 10
 .equ NETMSG_CMD_PONG                   = 11
+.equ NETMSG_CMD_HEARTBEAT              = 12
 .equ NETMSG_CMD_SENDSTATS              = 22
 .equ NETMSG_CMD_RECVSTATS              = 23
 .equ NETMSG_CMD_TWIBUSMEMBER           = 30