We have a product designed around a MPC5748G.
I want to extract the Ethernet driver from the provided SDK into a code base that was written before the SDK's were released.
Right now I have a proof-of-concept file with which I can send upd-packets and respond to pings.
I tried replacing that with the enet_driver.c, enet_irq.c, ... files, but I run into problems when sending. The buffer descriptor control field is 0x8C00.
status_t ENET_DRV_SendFrame(uint8_t instance,
uint8_t queue,
const enet_buffer_t * buff,
enet_tx_options_t * options)
{
// ...
base = s_enetBases[instance];
bd = g_enetState[instance]->txBdCurrent[queue];
if ((bd->control & ENET_BUFFDESCR_TX_READY_MASK) != 0U)
{
status = STATUS_ENET_TX_QUEUE_FULL;
}
Which means it has TX_READY_MASK | TX_LAST_MASK | TX_TRANSMITCRC_MASK set.
The sending is aborted STATUS_ENET_TX_QUEUE_FULL is returned.
/*! @brief Control and status bit masks of the transmit buffer descriptor. */
#define ENET_BUFFDESCR_TX_READY_MASK 0x8000U
#define ENET_BUFFDESCR_TX_WRAP_MASK 0x2000U
#define ENET_BUFFDESCR_TX_LAST_MASK 0x0800U
#define ENET_BUFFDESCR_TX_TRANSMITCRC_MASK 0x0400U
The buffers are configured like this:
int main(void) {
// ...
enet_config_t enetConfig;
/* Use only one ring */
enet_buffer_config_t enetBufferConfigs[ENET_QUEUE + 1];
uint8_t macAddr[NETIF_MAX_HWADDR_LEN] = { LWIP_MAC_ADDR_BASE };
uint8_t i;
ENET_DRV_GetDefaultConfig(&enetConfig);
enetConfig.miiMode = ENET_MIIMODE;
enetConfig.miiSpeed = ENET_MIISPEED;
enetConfig.rxConfig = (uint32_t)(ENET_RX_CONFIG_ENABLE_PAYLOAD_LEN_CHECK | ENET_RX_CONFIG_STRIP_CRC_FIELD | ENET_RX_CONFIG_REMOVE_PADDING | ENET_RX_CONFIG_ENABLE_FLOW_CONTROL);
enetConfig.txConfig = 0;
enetConfig.rxAccelerConfig = (uint8_t)(ENET_RX_ACCEL_ENABLE_IP_CHECK | ENET_RX_ACCEL_ENABLE_PROTO_CHECK | ENET_RX_ACCEL_REMOVE_PAD);
enetConfig.txAccelerConfig = (uint8_t)(ENET_TX_ACCEL_INSERT_IP_CHECKSUM | ENET_TX_ACCEL_INSERT_PROTO_CHECKSUM);
enetConfig.ringCount = sizeof(enetBufferConfigs) / sizeof (enet_buffer_config_t);
enetBufferConfigs[ENET_QUEUE].rxRingSize = ENET_RXBD_NUM;
enetBufferConfigs[ENET_QUEUE].txRingSize = ENET_TXBD_NUM;
enetBufferConfigs[ENET_QUEUE].rxRingAligned = rxDescriptor;
enetBufferConfigs[ENET_QUEUE].txRingAligned = txDescriptor;
enetBufferConfigs[ENET_QUEUE].rxBufferAligned = rxBuffer;
ENET_DRV_Init(ENET_INSTANCE, &enetState, &enetConfig, enetBufferConfigs, macAddr);
ENET_DRV_EnableMDIO(ENET_INSTANCE, false);
// ...
}
Do you have suggestions on where to start troubleshooting?
