avr/uart_hw, t03: cross messaging now works!!

avr/devices/t03/defs.asm

@@ -51,6 +51,8 @@
 ; ---------------------------------------------------------------------------
 ; COM module
 
+.equ COM_BIT_LENGTH     = 52000 ; 104000ns=9600, 52000ns=19200, 26000ns=38400
+
 .equ COM_ATTN_DDR       = DDRA
 .equ COM_ATTN_INPUT     = PINA
 .equ COM_ATTN_OUTPUT    = PORTA

avr/devices/t03/main.asm

@@ -212,7 +212,7 @@ onSystemTimerTick:
 ;  rcall maybeSendDeviceMsg
   rcall maybeSendTStatsMsg
   rcall maybeSendRStatsMsg
-;  rcall maybeSendMStatsMsg
+  rcall maybeSendMStatsMsg
   ret
 
 
@@ -286,6 +286,7 @@ initModules:
 ; includes
 
 .include "common/utils.asm"
+.include "common/utils_wait.asm"
 .include "common/utils_wait_fixed.asm"
 .include "common/utils_copy_from_flash.asm"
 .include "common/utils_copy_sdram.asm"
@@ -358,17 +359,9 @@ maybeSendTStatsMsg:
   lds r25, sendTStatsCounter+1
   sbiw r25:r24, 1
   brne maybeSendTStatsMsg_storeCounter
-  ; send device msg
+  
-  rcall NET_Buffer_Alloc                    ; (R16, R17, X)
+  rcall sendTStatsForUart0ToUart1
-;  brcc maybeSendTStatsMsg_resetCounter
+  
-  brcc maybeSendTStatsMsg_end
-  push r16
-    adiw xh:xl, 1
-    rcall NETMSG_SendStats_Write             ; (R16, R17, R18, R19, R20, R21, Z)
-    sbiw xh:xl, 1
-  pop r16
-  rcall NET_Interface_AddOrReleaseOutMsg     ; (R16, R17, R18, X)
-  brcc maybeSendTStatsMsg_end
   ; reset counter
 maybeSendTStatsMsg_resetCounter:
   ldi r24, LOW(SEND_STATS_EVERY)
@@ -380,6 +373,28 @@ maybeSendTStatsMsg_end:
   ret
 
 
+sendTStatsForUart0ToUart1:
+  push yl
+    push yh
+      ; send device msg
+      rcall NET_Buffer_Alloc                    ; (R16, R17, X)
+      brcc sendTStatsForUart0ToUart1_end
+      push r16
+        ldi yl, LOW(comOnUart0_iface)
+        ldi yh, HIGH(comOnUart0_iface)
+        adiw xh:xl, 1
+        rcall NETMSG_SendStats_Write             ; (R16, R17, R18, R19, R20, R21, Z)
+        sbiw xh:xl, 1
+      pop r16
+      ldi yl, LOW(ttyOnUart1_iface)
+      ldi yh, HIGH(ttyOnUart1_iface)
+      rcall NET_Interface_AddOrReleaseOutMsg     ; (R16, R17, R18, X)
+sendTStatsForUart0ToUart1_end:
+    pop yh
+  pop yl
+  ret
+
+
 
 maybeSendRStatsMsg:
   ldi yl, LOW(ttyOnUart1_iface)
@@ -391,7 +406,7 @@ maybeSendRStatsMsg:
   brne maybeSendRStatsMsg_storeCounter
 
   rcall sendRStatsForUart0ToUart1
-  rcall sendRStatsForUart1ToUart1
+;  rcall sendRStatsForUart1ToUart1
 
   ; reset counter
 maybeSendRStatsMsg_resetCounter:
@@ -481,29 +496,32 @@ maybeSendMStatsMsg_end:
 
 
 checkRecvdMsg:
-  rcall NET_PeekNextIncomingMsgNum          ; check read queue (bufNum->r16)
+    rcall NET_PeekNextIncomingMsgNum          ; check read queue (bufNum->r16)
-  brcc checkRecvdMsg_end                    ; no msg, jmp
+    brcc checkRecvdMsg_end                    ; no msg, jmp
-  rcall NET_Buffer_Locate                   ; (R17)
+    rcall NET_Buffer_Locate                   ; (R17)
-  adiw xh:xl, 1
+    push r16
-  push r16
+      push xl
-    rcall NETMSG_CheckMessageInBuffer       ; (R16, R17, R18, R19, R20, X)
+        push xh
-  pop r16
+          adiw xh:xl, 1
-  brcs checkRecvdMsg_sendMsg
+          rcall NETMSG_CheckMessageInBuffer       ; (R16, R17, R18, R19, R20, X)
-  ; release buffer
+        pop xh
-  rcall NET_GetNextIncomingMsgNum           ; take off the queue
+      pop xl
-  rcall NET_Buffer_ReleaseByNum             ; delete
+    pop r16
-  clc
+    brcs checkRecvdMsg_sendMsg
-  rjmp checkRecvdMsg_end
+    ; release buffer
-checkRecvdMsg_sendMsg:
+    rcall NET_GetNextIncomingMsgNum           ; take off the queue
-  sbiw xh:xl, 1
+    rcall NET_Buffer_ReleaseByNum             ; delete
-  ld r17, X
+    clc
-  andi r17, (NET_IFACE_BUFFER_IFACENUM1_BIT | NET_IFACE_BUFFER_IFACENUM0_BIT)
+    rjmp checkRecvdMsg_end
-;  rcall reverseInterfaceNum
+  checkRecvdMsg_sendMsg:
-  ldi r17, TTYONUART1_IFACENUM ; DEBUG: send everything to uart1 to test that code first
+    ld r17, X
-  rcall addMsgToInterface
+    andi r17, (NET_IFACE_BUFFER_IFACENUM1_BIT | NET_IFACE_BUFFER_IFACENUM0_BIT)
-  brcc checkRecvdMsg_end                    ; could not add, jmp
+    rcall reverseInterfaceNum
-  rcall NET_GetNextIncomingMsgNum           ; take off the queue
+;    ldi r17, TTYONUART1_IFACENUM ; DEBUG: send everything to uart1 to test that code first
-  sec
+    rcall addMsgToInterface
+    brcc checkRecvdMsg_end                    ; could not add, jmp
+    rcall NET_GetNextIncomingMsgNum           ; take off the queue
+  rjmp checkRecvdMsg
 checkRecvdMsg_end:
   ret
 
@@ -538,18 +556,19 @@ reverseInterfaceNum_notUart0:
 ; @param r17 interface num
 
 addMsgToInterface:
-  cpi r16, COMONUART0_IFACENUM
+  cpi r17, COMONUART0_IFACENUM
   brne addMsgToInterface_notUart0
-  ldi yl, LOW(ttyOnUart1_iface)
-  ldi yh, HIGH(ttyOnUart1_iface)
-  rjmp NET_Interface_AddOutgoingMsgNum     ; try to add msg to interface
-addMsgToInterface_notUart0:
-  cpi r16, TTYONUART1_IFACENUM
-  brne addMsgToInterface_end
   ldi yl, LOW(comOnUart0_iface)
   ldi yh, HIGH(comOnUart0_iface)
   rjmp NET_Interface_AddOutgoingMsgNum     ; try to add msg to interface
+addMsgToInterface_notUart0:
+  cpi r17, TTYONUART1_IFACENUM
+  brne addMsgToInterface_end
+  ldi yl, LOW(ttyOnUart1_iface)
+  ldi yh, HIGH(ttyOnUart1_iface)
+  rjmp NET_Interface_AddOutgoingMsgNum     ; try to add msg to interface
 addMsgToInterface_end:
+  clc
   ret
 ; @end
 

avr/modules/uart_hw/comonuart0.asm

@@ -37,11 +37,6 @@ ComOnUart0_Init:
   ldi r16, COMONUART0_IFACENUM
   std Y+NET_IFACE_OFFS_IFACENUM, r16
 
-  ldi r16, UART_HW_READMODE_IDLE
-  std Y+UART_HW_IFACE_OFFS_READMODE, r16
-  ldi r16, UART_HW_WRITEMODE_IDLE
-  std Y+UART_HW_IFACE_OFFS_WRITEMODE, r16
-
   sbi COM_IRQ_ADDR_ATTN, COM_IRQ_BIT_ATTN ; enable pin change irq for ATTN line
   in r16, GIMSK                           ; enable pin change irq PCIE0 or PCIE1
   ori r16, (1<<COM_IRQ_GIMSK_ATTN)
@@ -369,6 +364,9 @@ comOnUart0RunWriteIdle:
     rjmp comOnUart0RunWriteIdle_end          ; yes, line busy, jmp
 
   rcall UART_HW_Uart0_SetAttnLow             ; reserve bus as soon as possible
+  Utils_WaitNanoSecs COM_BIT_LENGTH, 0, r22  ; wait for one bit duration
+  Utils_WaitNanoSecs COM_BIT_LENGTH, 0, r22  ; wait for one bit duration
+
   rcall NET_Buffer_Locate                    ; (R17)
   rcall ComOnUart0_SendBuffer                ; (R16, R17)
   rcall NET_Interface_GetNextOutgoingMsgNum  ; take msg from queue (R17, R18, X)

avr/modules/uart_hw/lowlevel_uart1.asm

@@ -167,9 +167,11 @@ UART_HW_Uart1_RxCharIsr_econtent:
   ldi r16, NET_IFACE_OFFS_ERR_CONTENT_LOW
   rjmp UART_HW_Uart1_RxCharIsr_incCounterAndEnterSkipping
 UART_HW_Uart1_RxCharIsr_overrun:
-  ldi r16, NET_IFACE_OFFS_ERR_NOBUF_LOW
+;  ldi r16, NET_IFACE_OFFS_ERR_NOBUF_LOW
+  ldi r16, NET_IFACE_OFFS_ERR_MISSED_LOW
 UART_HW_Uart1_RxCharIsr_incCounterAndEnterSkipping:
   ldi r17, UART_HW_READMODE_SKIPPING
+  ldi r16, NET_IFACE_OFFS_HANDLED_LOW
 UART_HW_Uart1_RxCharIsr_incCounterAndEnterMode:
   rcall NET_Interface_IncCounter16              ; (R24, R25)
   std Y+UART_HW_IFACE_OFFS_READMODE, r17        ; set read mode

avr/modules/uart_hw/ttyonuart1.asm

@@ -369,9 +369,18 @@ ttyOnUart1RunReading:
 ; @clobbers R16
 
 ttyOnUart1RunSkipping:
+  ldi r17, 0xff
+  ldd r16, Y+UART_HW_IFACE_OFFS_READBUFNUM
+  std Y+UART_HW_IFACE_OFFS_READBUFNUM, r17
+  cp r16, r17
+  breq ttyOnUart1RunSkipping_checkTimer
+  rcall NET_Buffer_ReleaseByNum                 ; (R16, X)
+
+ttyOnUart1RunSkipping_checkTimer:
   ldd r16, Y+NET_IFACE_OFFS_READTIMER
   cpi r16, TTYONUART1_SKIPTIME
   brcs ttyOnUart1RunSkipping_end
+; leave skip mode (enter idle)
   ldi r16, UART_HW_READMODE_IDLE
   std Y+UART_HW_IFACE_OFFS_READMODE, r16
 ttyOnUart1RunSkipping_end:
@@ -388,6 +397,8 @@ ttyOnUart1RunSkipping_end:
 ttyOnUart1RunMsgReceived:
   ldi r17, 0xff
   ldd r16, Y+UART_HW_IFACE_OFFS_READBUFNUM
+  cp r16, r17
+  breq comOnUart1RunMsgReceived_enterIdle
   std Y+UART_HW_IFACE_OFFS_READBUFNUM, r17
   rcall NET_AddIncomingMsgNum                   ; (R17, R18, X)
   brcs comOnUart1RunMsgReceived_enterIdle
@@ -396,7 +407,6 @@ ttyOnUart1RunMsgReceived:
   ldi r16, NET_IFACE_OFFS_ERR_NOBUF_LOW
   rcall NET_Interface_IncCounter16              ; (R24, R25)
 comOnUart1RunMsgReceived_enterIdle:
-  rcall UART_HW_Interface_EnsureReadBuffer      ; (R16, R17, R24, R25, X)
   ldi r17, UART_HW_READMODE_IDLE
   std Y+UART_HW_IFACE_OFFS_READMODE, r17        ; set read mode
   ret