Hello everyone,
I am using B-L475E-IOT01A's wifi to send data to a server using UDP protocol. I am not using anything other than the wifi right now and my main loop looks like this:
while(1)
{
if(wifiReady==1 && wifiState==2)
{
wifiReady=0;
HAL_GPIO_WritePin(WIFI_CS_GPIO_Port,WIFI_CS_Pin,GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(&hspi3, (uint8_t *)dummyCommand, (uint8_t *)payloadBuffers[2], (DUMMY_LENGTH)/2, 2000);
HAL_GPIO_WritePin(WIFI_CS_GPIO_Port,WIFI_CS_Pin,GPIO_PIN_SET);
wifiState=1;
if(memcmp(payloadBuffers[2],"\r\n1400\r\nOK\r\n> ",14)==0){
printf("good\r\n");
badcounter=0;
}
else{
printf("bad\r\n");
badcounter++;
printf("all=%d, bad=%d\r\n", sendcounter, badcounter);
if(badcounter>8)
{
wifiReady=0;
HAL_GPIO_WritePin(WIFI_CS_GPIO_Port,WIFI_CS_Pin,GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(&hspi3, (uint8_t *)CLOSEClientcommand, (uint8_t *)payloadBuffers[2], (strlen(CLOSEClientcommand))/2, 2000);
HAL_GPIO_WritePin(WIFI_CS_GPIO_Port,WIFI_CS_Pin,GPIO_PIN_SET);
while(wifiReady==0) loopCounter++;
loopCounter=0;
wifiReady=0;
HAL_GPIO_WritePin(WIFI_CS_GPIO_Port,WIFI_CS_Pin,GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(&hspi3, (uint8_t *)dummyCommand, (uint8_t *)payloadBuffers[2], (DUMMY_LENGTH)/2, 2000);
HAL_GPIO_WritePin(WIFI_CS_GPIO_Port,WIFI_CS_Pin,GPIO_PIN_SET);
while(wifiReady==0) loopCounter++;
loopCounter=0;
wifiReady=0;
HAL_GPIO_WritePin(WIFI_CS_GPIO_Port,WIFI_CS_Pin,GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(&hspi3, (uint8_t *)STARTClientcommand, (uint8_t *)payloadBuffers[2], (strlen(STARTClientcommand))/2, 2000);
HAL_GPIO_WritePin(WIFI_CS_GPIO_Port,WIFI_CS_Pin,GPIO_PIN_SET);
while(wifiReady==0) loopCounter++;
loopCounter=0;
wifiReady=0;
HAL_GPIO_WritePin(WIFI_CS_GPIO_Port,WIFI_CS_Pin,GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(&hspi3, (uint8_t *)dummyCommand, (uint8_t *)payloadBuffers[2], (DUMMY_LENGTH)/2, 2000);
HAL_GPIO_WritePin(WIFI_CS_GPIO_Port,WIFI_CS_Pin,GPIO_PIN_SET);
while(wifiReady==0) loopCounter++;
loopCounter=0;
}
}
}
else if( wifiReady==1 && wifiState==1 )
{
lastWifiEventTimeStamp=htim2.Instance->CNT;
sprintf(payloadBuffers[0],"S3=%d\r", PAYLOAD_LEN);
wifiReady=0;
HAL_GPIO_WritePin(WIFI_CS_GPIO_Port,WIFI_CS_Pin,GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(&hspi3, (uint8_t *)payloadBuffers[0], (uint8_t *)payloadBuffers[1], (PAYLOAD_LEN+len)/2, 2000);
HAL_GPIO_WritePin(WIFI_CS_GPIO_Port,WIFI_CS_Pin,GPIO_PIN_SET);
wifiState=2;
sendcounter++;
}
}and this is the wifi initialization squence:
sendCommand(SSIDcommand,strlen(SSIDcommand));
sendCommand(PSWcommand,strlen(PSWcommand));
sendCommand(SECcommad,strlen(SECcommad));
sendCommand(JoinRetryCountcommad,strlen(JoinRetryCountcommad));
sendCommand(AutoConnectcommad,strlen(AutoConnectcommad));
sendCommand(CONNECTcommand,strlen(CONNECTcommand));
sendCommand(SocketCommand,strlen(SocketCommand));
sendCommand(UDPCommand,strlen(UDPCommand));
sendCommand(IPcommand, strlen(IPcommand));
sendCommand(PORTcommand, strlen(PORTcommand));
sendCommand(STARTClientcommand, strlen(STARTClientcommand));
sendCommand(STIMOEOUTcommand, strlen(STIMOEOUTcommand));
sendCommand(SENDPacketSize, strlen(SENDPacketSize));and here is the interrupt handler for DATAReady pin:
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if(GPIO_Pin == GPIO_PIN_1)
{
if(HAL_GPIO_ReadPin(WIFI_INT_GPIO_Port,WIFI_INT_Pin)==1)
{
wifiReady=1;
}
else if(HAL_GPIO_ReadPin(WIFI_INT_GPIO_Port,WIFI_INT_Pin)==0)
{
DMAReceiveCompleted=1;
}
}
}this code works fine for a while but suddenly stops sending data to the server and AT command returns following error which doesn't make sense given the code i posted above:
[UDP RC] rv= -1\r\n-1\r\nERROR: Unknown Error\r\nUsage: S3 <0001 - 1460>and this is SPI setting of the microcontroller:
953 counter=187121 average RTT=0s average bps=0.0mbps
954 counter=187124 average RTT=0.333s average bps=0.032mbps
955 counter=187560 average RTT=0.002s average bps=4.657mbps
956 counter=188038 average RTT=0.002s average bps=5.106mbps
957 counter=188421 average RTT=0.003s average bps=4.091mbps
958 counter=188872 average RTT=0.002s average bps=4.817mbps
959 counter=189336 average RTT=0.002s average bps=4.956mbps
960 counter=189792 average RTT=0.002s average bps=4.871mbps
961 counter=190244 average RTT=0.002s average bps=4.828mbps
962 counter=190700 average RTT=0.002s average bps=4.871mbps
963 counter=191145 average RTT=0.002s average bps=4.753mbps
964 counter=191589 average RTT=0.002s average bps=4.742mbps
965 counter=191981 average RTT=0.003s average bps=4.187mbps
966 counter=192550 average RTT=0.002s average bps=6.078mbps
967 counter=192903 average RTT=0.003s average bps=3.77mbps
968 counter=193413 average RTT=0.002s average bps=5.447mbps
969 counter=193837 average RTT=0.002s average bps=4.529mbps
970 counter=194258 average RTT=0.002s average bps=4.497mbps
971 counter=194712 average RTT=0.002s average bps=4.849mbps
972 counter=195172 average RTT=0.002s average bps=4.913mbps
973 counter=195625 average RTT=0.002s average bps=4.839mbps
974 counter=196052 average RTT=0.002s average bps=4.561mbps
975 counter=196509 average RTT=0.002s average bps=4.881mbps
976 counter=196956 average RTT=0.002s average bps=4.774mbps
977 counter=197296 average RTT=0.003s average bps=3.632mbps
978 counter=197735 average RTT=0.002s average bps=4.689mbps
979 counter=198183 average RTT=0.002s average bps=4.785mbps
980 counter=198333 average RTT=0.007s average bps=1.602mbps
981 counter=198639 average RTT=0.003s average bps=3.268mbps
982 counter=198722 average RTT=0.012s average bps=0.887mbps
983 counter=198722 average RTT=0s average bps=0.0mbps
984 counter=198722 average RTT=0s average bps=0.0mbps
985 counter=198722 average RTT=0s average bps=0.0mbps
986 counter=198722 average RTT=0s average bps=0.0mbps
987 counter=198722 average RTT=0s average bps=0.0mbps
988 counter=198722 average RTT=0s average bps=0.0mbps
989 counter=198722 average RTT=0s average bps=0.0mbps
990 counter=198722 average RTT=0s average bps=0.0mbps
991 counter=198722 average RTT=0s average bps=0.0mbps
992 counter=198722 average RTT=0s average bps=0.0mbps
993 counter=198722 average RTT=0s average bps=0.0mbps
994 counter=198722 average RTT=0s average bps=0.0mbps
995 counter=198722 average RTT=0s average bps=0.0mbps
996 counter=198722 average RTT=0s average bps=0.0mbps
997 counter=198722 average RTT=0s average bps=0.0mbps
998 counter=198722 average RTT=0s average bps=0.0mbps
999 counter=198722 average RTT=0s average bps=0.0mbps
1000 counter=198722 average RTT=0s average bps=0.0mbps
1001 counter=198722 average RTT=0s average bps=0.0mbps
1002 counter=198722 average RTT=0s average bps=0.0mbps
1003 counter=198722 average RTT=0s average bps=0.0mbps
1004 counter=198722 average RTT=0s average bps=0.0mbps
1005 counter=198722 average RTT=0s average bps=0.0mbps
1006 counter=198722 average RTT=0s average bps=0.0mbps
1007 counter=198722 average RTT=0s average bps=0.0mbps
1008 counter=198722 average RTT=0s average bps=0.0mbps
1009 counter=198722 average RTT=0s average bps=0.0mbps
1010 counter=198722 average RTT=0s average bps=0.0mbps
1011 counter=198722 average RTT=0s average bps=0.0mbps
1012 counter=198884 average RTT=0.006s average bps=1.73mbps
1013 counter=199377 average RTT=0.002s average bps=5.266mbps
1014 counter=199789 average RTT=0.002s average bps=4.401mbps
1015 counter=200238 average RTT=0.002s average bps=4.796mbpsas you can see connection starts and stops working intermittently and apparently there is no pattern for this events.
I've tried every trick that i could come up with, like closing and opening the connection and putting delay between sending consecutive packets, but none of them solved the problem for me.
I really appreciate any help for solving this problem.
thanks.
