Posted on July 26, 2015 at 05:32
================
The debugging output would be a lot more effective if it specified the length of the buffer received and output the buffer as hex bytes. At an ETH 83 level this would let you see source and destination MAC addresses on the wire, and if you dug deeper the TCP/IP payload beyond them. ================ do you mean the value of this ? /* Obtain the size of the packet and put it into the ''len'' variable. */ len = heth.RxFrameInfos.length; buffer = (uint8_t *)heth.RxFrameInfos.buffer;/**
* Should allocate a pbuf and transfer the bytes of the incoming
* packet from the interface into the pbuf.
*
* @param netif the lwip network interface structure for this ethernetif
* @return a pbuf filled with the received packet (including MAC header)
* NULL on memory error
*/
static struct pbuf * low_level_input(struct netif *netif)
{
struct pbuf *p = NULL;
struct pbuf *q;
uint16_t len = 0;
uint8_t *buffer;
__IO ETH_DMADescTypeDef *dmarxdesc;
uint32_t bufferoffset = 0;
uint32_t payloadoffset = 0;
uint32_t byteslefttocopy = 0;
uint32_t i=0;
/* get received frame */
if (HAL_ETH_GetReceivedFrame(&heth) != HAL_OK)
return NULL;
/* Obtain the size of the packet and put it into the ''len'' variable. */
len = heth.RxFrameInfos.length;
buffer = (uint8_t *)heth.RxFrameInfos.buffer;
if (len > 0)
{
/* We allocate a pbuf chain of pbufs from the Lwip buffer pool */
p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
}
if (p != NULL)
{
dmarxdesc = heth.RxFrameInfos.FSRxDesc;
bufferoffset = 0;
for(q = p; q != NULL; q = q->next)
{
byteslefttocopy = q->len;
payloadoffset = 0;
/* Check if the length of bytes to copy in current pbuf is bigger than Rx buffer size*/
while( (byteslefttocopy + bufferoffset) > ETH_RX_BUF_SIZE )
{
/* Copy data to pbuf */
memcpy( (uint8_t*)((uint8_t*)q->payload + payloadoffset), (uint8_t*)((uint8_t*)buffer + bufferoffset), (ETH_RX_BUF_SIZE - bufferoffset));
/* Point to next descriptor */
dmarxdesc = (ETH_DMADescTypeDef *)(dmarxdesc->Buffer2NextDescAddr);
buffer = (uint8_t *)(dmarxdesc->Buffer1Addr);
byteslefttocopy = byteslefttocopy - (ETH_RX_BUF_SIZE - bufferoffset);
payloadoffset = payloadoffset + (ETH_RX_BUF_SIZE - bufferoffset);
bufferoffset = 0;
}
/* Copy remaining data in pbuf */
memcpy( (uint8_t*)((uint8_t*)q->payload + payloadoffset), (uint8_t*)((uint8_t*)buffer + bufferoffset), byteslefttocopy);
bufferoffset = bufferoffset + byteslefttocopy;
}
/* Release descriptors to DMA */
/* Point to first descriptor */
dmarxdesc = heth.RxFrameInfos.FSRxDesc;
/* Set Own bit in Rx descriptors: gives the buffers back to DMA */
for (i=0; i<
heth.RxFrameInfos.SegCount
; i++)
{
dmarxdesc->Status |= ETH_DMARXDESC_OWN;
dmarxdesc = (ETH_DMADescTypeDef *)(dmarxdesc->Buffer2NextDescAddr);
}
/* Clear Segment_Count */
heth.RxFrameInfos.SegCount =0;
}
/* When Rx Buffer unavailable flag is set: clear it and resume reception */
if ((heth.Instance->DMASR & ETH_DMASR_RBUS) != (uint32_t)RESET)
{
/* Clear RBUS ETHERNET DMA flag */
heth.Instance->DMASR = ETH_DMASR_RBUS;
/* Resume DMA reception */
heth.Instance->DMARPDR = 0;
}
return p;
}
Posted on July 29, 2015 at 11:28
HCLK value ? Must be 25MHz ? thanks
clive,
My board is using 8MHz external crystal, may be it's the cause ? I saw in on design , I must use 25MHz with this method... HCLK value ? Must be 25MHz ? thanks
Posted on July 29, 2015 at 15:02
Is my clock configuration acceptable ?
I make it with STM32CubeMx
Posted on July 30, 2015 at 16:26
STM32 schematic, I changed to STM32F107VCT6 and 25MHz crystal
The Schematic, I changed the crystal of STM32 to 25MHz...and see what happens...
STM32 schematic, I changed to STM32F107VCT6 and 25MHz crystal
