I’m trying to run the FreeRTOS_Plus_TCP_Echo_Qemu_MPS2 example in Linux, Kubuntu 22.04.
My Qemu version is 8.0.4, stable release.
My issues are really similar to the ones within “issue-with-tcp-echo-qemu-mps2-demo/15547” in the forum.
I’ve tried applying the fixes listed there and in some other posts within this forum to no result:
- Define #define mainCREATE_TCP_ECHO_TASKS_SINGLE ( 1 ), which is not defined by default
- Recheck if the port I’m sending stuff to is port 7
- Recheck subnet masks
- Add NVIC_SetPriority(13, 6) to the _start function
- Make sure you are using Qemu within a VM, as ARP packets might not get sent if you are doing everything in the host
Qemu still gets stuck waiting for ARP packet responses:
Log here:
checking ID
0->prvMiscInitialisation 255: Seed for randomiser: 0
0->prvMiscInitialisation 262: Random numbers: 000078B1 00007B9C 000036E4 00000766
0->main_tcp_echo_client_tasks 150: FreeRTOS_IPInit
0x2000bb70->main_tcp_echo_client_tasks 158: vTaskStartScheduler
0x2000bb70->prvIPTask 263: prvIPTask started
0x2000bb70->vApplicationIPNetworkEventHook 212:
IP Address: 192.168.88.101
0x2000bb70->vApplicationIPNetworkEventHook 215: Subnet Mask: 255.255.255.0
0x2000bb70->vApplicationIPNetworkEventHook 218: Gateway Address: 192.168.88.1
0x2000bb70->vApplicationIPNetworkEventHook 221: DNS Server Address: 192.168.88.1
connecting to echo server....
0x20015a10->prvTCPConnectStart 3043: FreeRTOS_connect: 27415 to c0a858feip:7
0x20015a10->vTCPStateChange 499: Socket 27415 -> c0a858feip:7 State eCLOSED->eCONNECT_SYN
0x2000bb70->prvTCPPrepareConnect 634: ARP for c0a858feip (using c0a858feip): rc=0 00:00:00 00:00:00
0x2000bb70->prvTCPNextTimeout 560: Connect[c0a858feip:7]: next timeout 1: 500 ms
Here is a rundown of my setup:
- Router (DNS+Gateway): 192.168.88.1/24
- Host computer (Linux): 192.168.88.254/24
- Virbr0 (VM ip): 192.168.88.252/24
- QEMU (tap → virbr0-nic): 192.168.88.99/24
My FreeRTOSconfig.h:
#ifndef FREERTOS_CONFIG_H
#define FREERTOS_CONFIG_H
/*-----------------------------------------------------------
* Application specific definitions.
*
* These definitions should be adjusted for your particular hardware and
* application requirements.
*
* THESE PARAMETERS ARE DESCRIBED WITHIN THE 'CONFIGURATION' SECTION OF THE
* FreeRTOS API DOCUMENTATION AVAILABLE ON THE FreeRTOS.org WEB SITE.
*
* See https://www.freertos.org/a00110.html
*----------------------------------------------------------*/
#define configASSERT_DEFINED 1
extern void vAssertCalled( void );
#define configASSERT( x ) if( ( x ) == 0 ) vAssertCalled( )
#define configUSE_PREEMPTION 1
#define configUSE_TIME_SLICING 1
#define configUSE_IDLE_HOOK 0
#define configUSE_TICK_HOOK 0
#define configCPU_CLOCK_HZ ( ( unsigned long ) 20000000 )
#define configTICK_RATE_HZ ( ( TickType_t ) 1000 )
#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 2000 )
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 279000 ) )
#define configMAX_TASK_NAME_LEN ( 10 )
#define configUSE_TRACE_FACILITY 0
#define configUSE_16_BIT_TICKS 0
#define configIDLE_SHOULD_YIELD 0
#define configMAX_PRIORITIES ( 10 )
#define configTIMER_QUEUE_LENGTH 20
#define configTIMER_TASK_PRIORITY ( configMAX_PRIORITIES - 3 )
#define configUSE_COUNTING_SEMAPHORES 1
#define configSUPPORT_DYNAMIC_ALLOCATION 1
#define configNUM_TX_DESCRIPTORS 15
/* Set the following definitions to 1 to include the API function, or zero
to exclude the API function. */
#define configUSE_MALLOC_FAILED_HOOK 1
#define configUSE_MUTEXES 1
#define configUSE_RECURSIVE_MUTEXES 1
#define INCLUDE_vTaskPrioritySet 0
#define INCLUDE_uxTaskPriorityGet 0
#define INCLUDE_vTaskDelete 0
#define INCLUDE_vTaskCleanUpResources 0
#define INCLUDE_vTaskSuspend 0
#define INCLUDE_vTaskDelayUntil 1
#define INCLUDE_vTaskDelay 1
#define configKERNEL_INTERRUPT_PRIORITY 252
/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
#define configMAX_SYSCALL_INTERRUPT_PRIORITY 5 /* equivalent to 0xa0, or priority 5. */
#define configMAC_INTERRUPT_PRIORITY 2
/* networking definitions */
#define configMAC_ISR_SIMULATOR_PRIORITY ( configMAX_PRIORITIES - 2 )
#define ipconfigUSE_NETWORK_EVENT_HOOK 1
//#define ipconfigSOCK_DEFAULT_RECEIVE_BLOCK_TIME pdMS_TO_TICKS(5000)
#define configNETWORK_INTERFACE_TO_USE 1L
/* The address of an echo server that will be used by the two demo echo client
tasks.
http://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/TCP_Echo_Clients.html
http://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/UDP_Echo_Clients.html */
#define configECHO_SERVER_ADDR0 192
#define configECHO_SERVER_ADDR1 168
#define configECHO_SERVER_ADDR2 88
#define configECHO_SERVER_ADDR3 254
/* Default MAC address configuration. The demo creates a virtual network
connection that uses this MAC address by accessing the raw Ethernet/WiFi data
to and from a real network connection on the host PC. See the
configNETWORK_INTERFACE_TO_USE definition above for information on how to
configure the real network connection to use. */
#define configMAC_ADDR0 0x52
#define configMAC_ADDR1 0x54
#define configMAC_ADDR2 0x00
#define configMAC_ADDR3 0x12
#define configMAC_ADDR4 0x34
#define configMAC_ADDR5 0xAD
/* Default IP address configuration. Used in ipconfigUSE_DNS is set to 0, or
ipconfigUSE_DNS is set to 1 but a DNS server cannot be contacted. */
#define configIP_ADDR0 192
#define configIP_ADDR1 168
#define configIP_ADDR2 88
#define configIP_ADDR3 99
/* Default gateway IP address configuration. Used in ipconfigUSE_DNS is set to
0, or ipconfigUSE_DNS is set to 1 but a DNS server cannot be contacted. */
#define configGATEWAY_ADDR0 192
#define configGATEWAY_ADDR1 168
#define configGATEWAY_ADDR2 88
#define configGATEWAY_ADDR3 1
/* Default DNS server configuration. OpenDNS addresses are 208.67.222.222 and
208.67.220.220. Used in ipconfigUSE_DNS is set to 0, or ipconfigUSE_DNS is set
to 1 but a DNS server cannot be contacted.*/
#define configDNS_SERVER_ADDR0 192
#define configDNS_SERVER_ADDR1 168
#define configDNS_SERVER_ADDR2 88
#define configDNS_SERVER_ADDR3 1
/* Default netmask configuration. Used in ipconfigUSE_DNS is set to 0, or
ipconfigUSE_DNS is set to 1 but a DNS server cannot be contacted. */
#define configNET_MASK0 255
#define configNET_MASK1 255
#define configNET_MASK2 255
#define configNET_MASK3 0
/* The UDP port to which print messages are sent. */
#define configPRINT_PORT ( 15000 )
#endif /* FREERTOS_CONFIG_H */
Might be an issue with interrupt priorities I reckon, but, as stated by jasUman in “issue-with-tcp-echo-qemu-mps2-demo/15547”, those priorities are set by default and changing the Linux distro/version should not have any effects.
Any ideas?