公司項(xiàng)目已進(jìn)入小批量測試階段了，方案使用的是CH32V307+IP101G，頻繁出現(xiàn)接收幀錯(cuò)誤，導(dǎo)致設(shè)備網(wǎng)絡(luò)無法正常通訊。當(dāng)DMA產(chǎn)生中斷后，使用的接收處理函數(shù)如下：

FrameTypeDef?ETH_RxPkt_ChainMode(void)
{
??u32?framelength?=?0;
??FrameTypeDef?frame?=?{0,0};

??/*?Check?if?the?descriptor?is?owned?by?the?ETHERNET?DMA?(when?set)?or?CPU?(when?reset)?*/
??if((DMARxDescToGet->Status?&?ETH_DMARxDesc_OWN)?!=?(u32)RESET)
??{
????frame.length?=?ETH_ERROR;

????if?((ETH->DMASR?&?ETH_DMASR_RBUS)?!=?(u32)RESET)
????{
??????/*?Clear?RBUS?ETHERNET?DMA?flag?*/
??????ETH->DMASR?=?ETH_DMASR_RBUS;
??????/*?Resume?DMA?reception?*/
??????ETH->DMARPDR?=?0;
????}
????DEBUG_PRINTF("Error:ETH_DMARxDesc_OWN.\r\n");
????/*?Return?error:?OWN?bit?set?*/
????return?frame;
??}

??if(
?????((DMARxDescToGet->Status?&?ETH_DMARxDesc_ES)?==?(u32)RESET)?&&
?????((DMARxDescToGet->Status?&?ETH_DMARxDesc_LS)?!=?(u32)RESET)?&&
?????((DMARxDescToGet->Status?&?ETH_DMARxDesc_FS)?!=?(u32)RESET))
??{
????/*?Get?the?Frame?Length?of?the?received?packet:?substruct?4?bytes?of?the?CRC?*/
????framelength?=?((DMARxDescToGet->Status?&?ETH_DMARxDesc_FL)?>>?ETH_DMARxDesc_FrameLengthShift)?-?4;

????/*?Get?the?addrees?of?the?actual?buffer?*/
????frame.buffer?=?DMARxDescToGet->Buffer1Addr;
??}
??else
??{
????/*?Return?ERROR?*/
????framelength?=?ETH_ERROR;
????printf("Error:recv?error?frame,status：0x%08x.\r\n",DMARxDescToGet->Status);
????printf("ETH->DMASR：0x%x.\r\n",?ETH->DMASR);
??}
??DMARxDescToGet->Status|=ETH_DMARxDesc_OWN;
??frame.length?=?framelength;
??frame.descriptor?=?DMARxDescToGet;

??/*?Update?the?ETHERNET?DMA?global?Rx?descriptor?with?next?Rx?decriptor?*/
??/*?Chained?Mode?*/
??/*?Selects?the?next?DMA?Rx?descriptor?list?for?next?buffer?to?read?*/
??DMARxDescToGet?=?(ETH_DMADESCTypeDef*)?(DMARxDescToGet->Buffer2NextDescAddr);

??/*?Return?Frame?*/
??return?(frame);
}

調(diào)試打印信息如下：

I/elog????????????EasyLogger?V2.2.99?is?initialize?success.
I/APP.MAIN????????CPU?Freq:144000000?Hz
I/APP.MAIN????????Kernel?Version:V10.4.6
I/APP.MAIN????????HardWare?Version:?VA3
I/APP.MAIN????????SoftWare?Version:?V1.2.7
I/ip101??????????IP101G初始化成功,ID:2430C54
I/APP.ETH?????????The?network?cable?is?not?connected!
I/ethernet?????????網(wǎng)絡(luò)模式切換為:100M全雙工
I/APP.ETH?????????The?network?cable?is?now?connected!
I/APP.ETH?????????ip_addr?=?192.168.0.193
I/APP.ETH?????????netmask?=?255.255.255.0
I/APP.ETH?????????gateway?=?192.168.0.1
Error:recv?error?frame,status:0x004e8b20.
ETH->DMASR:0x690414.
Error:recv?error?frame,status:0x00468b20.
ETH->DMASR:0x690414.

接收描述符狀態(tài)值0x004e8b20，說明了ES標(biāo)志置位了，也就是OE置位了，即溢出錯(cuò)誤了。請問下，出現(xiàn)這種問題需要怎么去解決？

您好，接收發(fā)送的處理可以使用我們的例程試一下，收發(fā)是沒問題的，可以通過郵箱溝通一下：kx@wch.cn