Comments (4)
AniruddhaKanhere
commented on July 18, 2024
Hello @gsbwallace1996 can you capture a Wireshark log?
I am curious to know what is the value of ipconfigDNS_CACHE_NAME_LENGTH.
I am assuming that you are using FreeRTOS+TCP. Also, can you try doing a DNS lookup using SOCKETS_gethostbyname( "www.github.com" ) and see whether that succeeds?
Thanks
from amazon-freertos.
htibosch
commented on July 18, 2024
@AniruddhaKanhere wrote:
Hello @gsbwallace1996 can you capture a Wireshark log?
I would have asked for a PACP as well. Can you attach it in a ZIP file?
I am curious to know what is the value of ipconfigDNS_CACHE_NAME_LENGTH.
That is the size of the largest URL that the DNS software can handle. By default, it is 254 bytes, but your copy of FreeeRTOSIPConfig.h might define it smaller.
Note that a copy of the URL will be declared on-stack:
char pcName[ ipconfigDNS_CACHE_NAME_LENGTH ];... which may cost 256/4 words of stack.
Also, while debugging, it would be interesting to see the logging from FreeeRTOS+TCP: see ipconfigHAS_PRINTF and ipconfigHAS_DEBUG_PRINTF on FreeRTOS.org.
Of course it is possible the run a test without DNS, by filling in an IP-address:
- serverAddress.ulAddress = SOCKETS_GetHostByName( pServerInfo->pHostName );
+ serverAddress.ulAddress = FreeRTOS_inet_addr_quick( 52, 213, 52, 29 );FreeRTOS_inet_addr_quick() returns a network-endian IP-address, no worries about the endianness.
from amazon-freertos.
Hexagon3626
commented on July 18, 2024
Hi @htibosch @AniruddhaKanhere,
Apologies in advance for the long post, TLDR: I actually believe this issue to now be a potential DHCP issue or general connection issue. I've put below the steps I've taken to reach that conclusion.
I can confirm that the ipconfigDNS_CACHE_NAME_LENGTH is set to 254 and I am using FreeRTOS+TCP.
Like you suggested @htibosch I done print line debugging of the lower level functions to ensure everything was passed and triggering correctly. Starting with the cache:
“03/11/2022 12:47:34”,[AWS] [ERROR][NET][lu] Failed to resolve [a1c29udxup0qn9-ats.iot.eu-west-1.amazonaws.com](http://a1c29udxup0qn9-ats.iot.eu-west-1.amazonaws.com/).
“03/11/2022 12:47:34”,[AWS] [ERROR][MQTT][lu] Failed to establish new MQTT connection, error NETWORK ERROR.
“03/11/2022 12:47:34”,[AWS] [ERROR][DEMO][lu] MQTT CONNECT returned error NETWORK ERROR.
“03/11/2022 12:47:34”,[AWS] [INFO ][Shadow][lu] Shadow library cleanup done.
“03/11/2022 12:47:34”,[AWS] [INFO ][MQTT][lu] MQTT library cleanup done.
“03/11/2022 12:47:34”,[AWS] [ERROR][DEMO][lu] Error running demo.
“03/11/2022 12:47:36”,[ADMIN] Starting AWS Task
“03/11/2022 12:47:36”,[AWS] [INFO ][DEMO][lu] Successfully initialised the demo. Network type for the demo: 4
“03/11/2022 12:47:36”,[AWS] [INFO ][MQTT][lu] MQTT library successfully initialized.
“03/11/2022 12:47:36”,[AWS] [INFO ][Shadow][lu] Shadow library successfully initialized.
“03/11/2022 12:47:36”,[AWS] SOCKETS_GetHostByName
“03/11/2022 12:47:36”,[AWS] FreeRTOS_gethostbyname
“03/11/2022 12:47:36”,[AWS] FreeRTOS_gethostbyname_a start
“03/11/2022 12:47:36”,[AWS] FreeRTOS_gethostbyname_a ipconfigUSE_DNS_CACHE
“03/11/2022 12:47:36”,[AWS] FreeRTOS_dnslookup pcHostName: [a1c29udxup0qn9-ats.iot.eu-west-1.amazonaws.com](http://a1c29udxup0qn9-ats.iot.eu-west-1.amazonaws.com/) (string not truncated when passed)
“03/11/2022 12:47:36”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:36”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:36”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:36”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:36”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:36”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:36”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:36”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:36”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:36”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:36”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:36”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:36”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:36”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:36”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:36”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:36”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:36”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:36”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:36”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:37”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:37”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:37”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:37”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:37”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:37”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:37”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:37”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:37”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:37”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:37”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:37”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:37”,[IDLE] 108296 104016
“03/11/2022 12:47:37”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:37”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:37”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:37”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:37”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:37”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
“03/11/2022 12:47:37”,[AWS] xDNSCache[x].pcName: 0
“03/11/2022 12:47:37”,[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0 (cycles for 20 per ipconfigDNS_CACHE_ENTRIES)
“03/11/2022 12:47:37”,[AWS] xFound == pdFALSE
“03/11/2022 12:47:37”,[AWS] xLookUp != pdFALSE
“03/11/2022 12:47:37”,[AWS] FreeRTOS_dnslookup ulIPAddress: 0 (zero returned addresses from cache)No hits for the DNS so nothing unexpected. Turned off cache in config file:
"03/11/2022 14:19:16",[AWS] prvGetHostByName (function name)
"03/11/2022 14:19:16",[AWS] xReadTimeOut_ms: 15000 (ipconfigSOCK_DEFAULT_RECEIVE_BLOCK_TIME)
"03/11/2022 14:19:16",[AWS] iptraceSENDING_DNS_REQUEST
"03/11/2022 14:19:16",[AWS] xNetworkAddressing.ulDNSServerAddress: 208.67.222.222 (obtained from sub function)
"03/11/2022 14:19:16",[AWS] ulIPAddress: 208.67.222.222 (passed correctly from sub function)
"03/11/2022 14:19:16",[AWS] dnsDNS_PORT: 4
"03/11/2022 14:19:19",[IDLE] 108144 104016
"03/11/2022 14:19:21",[Tmr Svc] MIC_0 assigned
"03/11/2022 14:19:24",[IDLE] 108144 104016
"03/11/2022 14:19:26",[Tmr Svc] MIC_1 assigned
"03/11/2022 14:19:29",[IDLE] 108144 104016
"03/11/2022 14:19:31",[Tmr Svc] MIC_2 assigned
"03/11/2022 14:19:31",[AWS] iptraceSENDING_DNS_REQUEST
"03/11/2022 14:19:31",[AWS] xNetworkAddressing.ulDNSServerAddress: 208.67.222.222
"03/11/2022 14:19:31",[AWS] ulIPAddress: 208.67.222.222
"03/11/2022 14:19:31",[AWS] dnsDNS_PORT: 4
"03/11/2022 14:19:34",[IDLE] 108144 104016
"03/11/2022 14:19:36",[Tmr Svc] MIC_3 assigned
"03/11/2022 14:19:39",[IDLE] 108144 104016
"03/11/2022 14:19:41",[Tmr Svc] MIC_4 assigned
"03/11/2022 14:19:44",[IDLE] 108144 104016
"03/11/2022 14:19:45",[Tmr Svc] MIC_5 assigned
"03/11/2022 14:19:46",[AWS] iptraceSENDING_DNS_REQUEST (does this 3 times due to ipconfigDNS_REQUEST_ATTEMPTS)
"03/11/2022 14:19:46",[AWS] xNetworkAddressing.ulDNSServerAddress: 208.67.222.222
"03/11/2022 14:19:46",[AWS] ulIPAddress: 208.67.222.222
"03/11/2022 14:19:46",[AWS] dnsDNS_PORT: 4
"03/11/2022 14:19:49",[IDLE] 108144 104016
"03/11/2022 14:19:50",[Tmr Svc] MIC_6 assigned
"03/11/2022 14:19:54",[IDLE] 108144 104016
"03/11/2022 14:19:55",[Tmr Svc] MIC_7 assigned
"03/11/2022 14:19:59",[IDLE] 108144 104016
"03/11/2022 14:20:00",[Tmr Svc] MIC_8 assigned
"03/11/2022 14:20:01",[AWS] ulIPAddress: 0
"03/11/2022 14:20:01",[AWS] [ERROR][NET][lu] Failed to resolve [a1c29udxup0qn9-ats.iot.eu-west-1.amazonaws.com](http://a1c29udxup0qn9-ats.iot.eu-west-1.amazonaws.com/).
"03/11/2022 14:20:01",[AWS] [ERROR][MQTT][lu] Failed to establish new MQTT connection, error NETWORK ERROR.
"03/11/2022 14:20:01",[AWS] [ERROR][DEMO][lu] MQTT CONNECT returned error NETWORK ERROR.
"03/11/2022 14:20:01",[AWS] [INFO ][Shadow][lu] Shadow library cleanup done.
"03/11/2022 14:20:01",[AWS] [INFO ][MQTT][lu] MQTT library cleanup done.
"03/11/2022 14:20:01",[AWS] [ERROR][DEMO][lu] Error running demo.
"03/11/2022 14:20:02",[ADMIN] Starting AWS Task
"03/11/2022 14:20:02",[AWS] [INFO ][DEMO][lu] Successfully initialised the demo. Network type for the demo: 4
"03/11/2022 14:20:02",[AWS] [INFO ][MQTT][lu] MQTT library successfully initialized.
"03/11/2022 14:20:02",[AWS] [INFO ][Shadow][lu] Shadow library successfully initialized. (cycle repeats)I redone the windows ping/ping path for the dns link and got:
I then manually altered the address and port as seen in this link just before the FreeRTOS_sendto. Tried the ping IP and a few nslookup IP addresses but no luck. Message sent but no bytes received, socket then closed. This was a bad idea as I'm sure AWS uses virtual servers which IPs change constantly:
"03/11/2022 15:40:13",[AWS] iptraceSENDING_DNS_REQUEST
"03/11/2022 15:40:13",[AWS] xNetworkAddressing.ulDNSServerAddress: 208.67.222.222
"03/11/2022 15:40:13",[AWS] ulIPAddress: 208.67.222.222
"03/11/2022 15:40:13",[AWS] Manual ulIPAddress: 54.194.194.16
"03/11/2022 15:40:13",[AWS] dnsDNS_PORT: 4
"03/11/2022 15:40:13",[AWS] FreeRTOS_sendto
"03/11/2022 15:40:17",[Tmr Svc] MIC_6 assigned
"03/11/2022 15:40:17",[IDLE] 107560 104016
"03/11/2022 15:40:22",[Tmr Svc] MIC_7 assigned
"03/11/2022 15:40:22",[IDLE] 107560 104016
"03/11/2022 15:40:27",[Tmr Svc] MIC_8 assigned
"03/11/2022 15:40:27",[IDLE] 107560 104016
"03/11/2022 15:40:28",[AWS] iptraceSENDING_DNS_REQUEST
"03/11/2022 15:40:28",[AWS] xNetworkAddressing.ulDNSServerAddress: 208.67.222.222
"03/11/2022 15:40:28",[AWS] ulIPAddress: 208.67.222.222
"03/11/2022 15:40:28",[AWS] Manual ulIPAddress: 54.194.194.16
"03/11/2022 15:40:28",[AWS] dnsDNS_PORT: 4
"03/11/2022 15:40:28",[AWS] FreeRTOS_sendto
"03/11/2022 15:40:32",[Tmr Svc] MIC_9 assigned
"03/11/2022 15:40:32",[IDLE] 107560 104016
"03/11/2022 15:40:37",[Tmr Svc] MIC_10 assigned
"03/11/2022 15:40:37",[IDLE] 107560 104016
"03/11/2022 15:40:42",[Tmr Svc] MIC_11 assigned
"03/11/2022 15:40:42",[IDLE] 107560 104016
"03/11/2022 15:40:43",[AWS] iptraceSENDING_DNS_REQUEST
"03/11/2022 15:40:43",[AWS] xNetworkAddressing.ulDNSServerAddress: 208.67.222.222
"03/11/2022 15:40:43",[AWS] ulIPAddress: 208.67.222.222
"03/11/2022 15:40:43",[AWS] Manual ulIPAddress: 54.194.194.16
"03/11/2022 15:40:43",[AWS] dnsDNS_PORT: 4
"03/11/2022 15:40:43",[AWS] FreeRTOS_sendto
"03/11/2022 15:40:47",[Tmr Svc] MIC_0 assigned
"03/11/2022 15:40:58",[AWS] FreeRTOS_closesocket
"03/11/2022 15:40:58",[AWS] ulIPAddress: 0Next thought was to use what @AniruddhaKanhere suggested but I instead used the freeRTOS example that I implemented in the high level .c file. Unfortunately, as it uses the same low level function it still produced the error:
"03/11/2022 16:37:54",[AWS] FreeRTOS_dnslookup pcHostName: [www.freertos.org](http://www.freertos.org/)
"03/11/2022 16:37:54",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:54",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:54",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:54",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:54",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:54",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:54",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:54",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:55",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:55",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:55",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:55",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:55",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:55",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:55",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:55",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:55",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:55",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:55",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:55",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:55",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:55",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:55",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:55",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:55",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:55",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:56",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:56",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:56",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:56",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:56",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:56",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:56",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:56",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:56",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:56",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:56",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:56",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:56",[AWS] xDNSCache[x].pcName: 0
"03/11/2022 16:37:56",[AWS] IF xDNSCache[ x ].pcName[ 0 ] == 0
"03/11/2022 16:37:56",[AWS] xFound == pdFALSE
"03/11/2022 16:37:56",[AWS] xLookUp != pdFALSE
"03/11/2022 16:37:56",[AWS] FreeRTOS_dnslookup ulIPAddress: 0
"03/11/2022 16:37:56",[AWS] prvGetHostByName
"03/11/2022 16:37:56",[AWS] xReadTimeOut_ms: 15000
"03/11/2022 16:37:56",[AWS] iptraceSENDING_DNS_REQUEST
"03/11/2022 16:37:56",[AWS] xNetworkAddressing.ulDNSServerAddress: 208.67.222.222
"03/11/2022 16:37:56",[AWS] ulIPAddress: 208.67.222.222
"03/11/2022 16:37:56",[AWS] dnsDNS_PORT: 4
"03/11/2022 16:37:56",[AWS] FreeRTOS_sendto
"03/11/2022 16:37:58",[IDLE] 108072 103992
"03/11/2022 16:37:58",[Tmr Svc] MIC_7 assigned
"03/11/2022 16:38:03",[IDLE] 108072 103992
"03/11/2022 16:38:03",[Tmr Svc] MIC_8 assigned
"03/11/2022 16:38:08",[IDLE] 108072 103992
"03/11/2022 16:38:08",[Tmr Svc] MIC_9 assigned
"03/11/2022 16:38:11",[AWS] iptraceSENDING_DNS_REQUEST
"03/11/2022 16:38:11",[AWS] xNetworkAddressing.ulDNSServerAddress: 208.67.222.222
"03/11/2022 16:38:11",[AWS] ulIPAddress: 208.67.222.222
"03/11/2022 16:38:11",[AWS] dnsDNS_PORT: 4
"03/11/2022 16:38:11",[AWS] FreeRTOS_sendto
"03/11/2022 16:38:26",[AWS] iptraceSENDING_DNS_REQUEST
"03/11/2022 16:38:26",[AWS] xNetworkAddressing.ulDNSServerAddress: 208.67.222.222
"03/11/2022 16:38:26",[AWS] ulIPAddress: 208.67.222.222
"03/11/2022 16:38:26",[AWS] dnsDNS_PORT: 4
"03/11/2022 16:38:26",[AWS] FreeRTOS_sendto
"03/11/2022 16:38:28",[IDLE] 108016 103992
"03/11/2022 16:38:28",[Tmr Svc] MIC_1 assigned
"03/11/2022 16:38:33",[Tmr Svc] MIC_2 assigned
"03/11/2022 16:38:33",[IDLE] 108016 103992
"03/11/2022 16:38:38",[Tmr Svc] MIC_3 assigned
"03/11/2022 16:38:38",[IDLE] 108016 103992
"03/11/2022 16:38:41",[AWS] FreeRTOS_closesocket
"03/11/2022 16:38:41",[AWS] [ERROR][NET][lu] DNS lookup failed.What lead me on to the DHCP thought was the IP-task echoing the same IP address:
/* The default IP and MAC address used by the demo. The address configuration
* defined here will be used if ipconfigUSE_DHCP is 0, or if ipconfigUSE_DHCP is
* 1 but a DHCP server could not be contacted. See the online documentation for
* more information. In both cases the node can be discovered using
* "ping RTOSDemo". */
static const uint8_t ucIPAddress[ 4 ] =
{
configIP_ADDR0, //192
configIP_ADDR1, //168
configIP_ADDR2, //0
configIP_ADDR3 //105
};
static const uint8_t ucNetMask[ 4 ] =
{
configNET_MASK0, //255
configNET_MASK1, //255
configNET_MASK2, //255
configNET_MASK3 //0
};
static const uint8_t ucGatewayAddress[ 4 ] =
{
configGATEWAY_ADDR0, //192
configGATEWAY_ADDR1, //168
configGATEWAY_ADDR2, //0
configGATEWAY_ADDR3 //1
};
static const uint8_t ucDNSServerAddress[ 4 ] =
{
configDNS_SERVER_ADDR0, //208
configDNS_SERVER_ADDR1, //67
configDNS_SERVER_ADDR2, //222
configDNS_SERVER_ADDR3 //222
};Turning the DHCP off in the config hasn't yielded any result changes from using the static IP. Tried to see if the DHCP was retrieving any bytes from within the prvProcessDHCPReplies function:
lBytes = FreeRTOS_recvfrom( xDHCPData.xDHCPSocket, ( void * ) &pucUDPPayload, 0ul, FREERTOS_ZERO_COPY, &xClient, &xClientLength );
configPRINTF( ( "lBytes: %d\r\n", lBytes ) );
if( lBytes > 0 )
{
/* Map a DHCP structure onto the received data. */
pxDHCPMessage = ( DHCPMessage_t * ) ( pucUDPPayload );
vTaskDelay(100);
configPRINTF( ( "if( lBytes > 0 )\r\n" ) );
...But no luck as return corresponds to If no bytes are received before the configured block time expires then -pdFREERTOS_ERRNO_EWOULDBLOCK (-11) is returned.
Using Wireshark in combination with a switch or directly into my laptop I attempted to see anything coming from the device. I have yet been unable to see anything for the devices static IP. I came across this link which suggests that the address 0.0.0.0 is indeed from the embedded trying to get an address in the direct connection but I not sure.
I have attached some of the wireshark files that I took and the config file.
dev_ETH_DIRECT.zip
Next steps are probably to alter the code to fire down UDP to establish data packets coming out.
Many thanks,
Greg
from amazon-freertos.
htibosch
commented on July 18, 2024
After you turned of your DHCP, I would expect to see packets from 192.168.0.105, but I don't see any in any of the PCAP files?
What I don't understand is the logging dnsDNS_PORT: 4, shouldn't that be either 0x3500 or 0x0035 (depending on the endianness) ?
Hardware board: STM32H743
Note that this is one of the latest ports, and you might have some start-up problems.
The most difficult things is to find the proper memory that is not cached, and that can be passed to DMA.
Please have a look at the readme.md
Have you tried the more basic things like:
- Define a static address and try ping
- Use DHCP and see if the works
My feeling is that not a packet reaches the wire.
WINC1500 WIFI
Just curious, are you using this in combination with a STM32H7x?
from amazon-freertos.
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