mcf5223x InterNiche Stack dropping udp packets

admin — Thu, 29 Oct 2020 09:21:25 GMT

I am trying to send out a couple of udp packets at a time and the stack seems to drop some of the packets in the send_arp function. I see the error:

tftp_udpsend(): udp_send() error -22

on the hyper terminal. I narrowed it down to the SEND_DROPPED error it is returning. Is this because I am not putting a delay in between sending each packet?

This is the code where it happens the most:

Code:

emg_udpsend( replyip, TESTFIX_FPORT, TESTFIX_LPORT, (void *)(data_buff ), 1000);emg_udpsend( replyip, TESTFIX_FPORT, TESTFIX_LPORT, (void *)(data_buff+500) , 1000);emg_udpsend( replyip, TESTFIX_FPORT, TESTFIX_LPORT, (void *)(data_buff+1000), 1000);emg_udpsend( replyip, TESTFIX_FPORT, TESTFIX_LPORT, (void *)(data_buff+1500), 1000);emg_udpsend( replyip, TESTFIX_FPORT, TESTFIX_LPORT, (void *)(data_buff+2000), 1000);emg_udpsend( replyip, TESTFIX_FPORT, TESTFIX_LPORT, (void *)(data_buff+2500), 1000);emg_udpsend( replyip, TESTFIX_FPORT, TESTFIX_LPORT, (void *)(data_buff+3000), 1000);emg_udpsend( replyip, TESTFIX_FPORT, TESTFIX_LPORT, (void *)(data_buff+3500), 1000);emg_udpsend( replyip, TESTFIX_FPORT, TESTFIX_LPORT, (void *)(data_buff+4000), 1000);emg_udpsend( replyip, TESTFIX_FPORT, TESTFIX_LPORT, (void *)(data_buff+4500), 1000);

Has anyone else run into this problem?

Thank you

Todd

Re: mcf5223x InterNiche Stack dropping udp packets

TrevorCurry_eu — Fri, 04 Jan 2008 18:49:34 GMT

Hi Todd,

I don't have anything specific to your problem but a bug I have just found may apply:

I have a serial to TCP application that was periodically dropping a transmit - the TCP retransmit timeout kicked in so the message was not lost but the extra latency was the problem. This turned out to be the setup in fec_init() where the RCR and TCR had different duplex settings (DRT and FDEN bits were both set). Since I was running half duplex, I cleared the TDR, FDEN bit and the problem went away.

I hope that helps.
Trevor

ColdFire/68K Microcontrollers and Processorsのトピックmcf5223x InterNiche Stack dropping udp packets

mcf5223x InterNiche Stack dropping udp packets

Re: mcf5223x InterNiche Stack dropping udp packets