Dear friends,
I am trying to create a TCP server using lwIP and netconn APIs for STM32F407VGt6 MCU and recieve data from a PC software program which acts as a TCP client.
The MCU recieves all the data correctly from PC software in multiple packets and after finishing data transfer, a HardFault error occurs.
The TOTAL_HEAP_SIZE of freeRTOS is 15360 bytes and the TCP thread stack size is 256 words.
I am using CubeMX version 4.25 and HAL firmware version 1.21.0.
The code I wrote is as follows:
/* TCP_Server_Task function */
void TCP_Server_Task(void const * argument)
{
/* init code for LWIP */
MX_LWIP_Init();
/* USER CODE BEGIN 5 */
struct netconn *conn, *newconn;
err_t err, accept_err;
struct netbuf *buf;
void *data;
u16_t len;
uint8_t j;
uint8_t *tcp_rx_buf;
uint8_t length;
LWIP_UNUSED_ARG(argument);
W25Qxx_Init();
W25Qxx_SectorErase(W25QXX_BLOCK_1_ADDR);
W25Qxx_SectorErase(W25QXX_BLOCK_2_ADDR);
write_addr = W25QXX_BLOCK_2_ADDR;
/* Create a new connection identifier. */
conn = netconn_new(NETCONN_TCP);
if (conn!=NULL)
{
/* Bind connection to well known port number 502. */
err = netconn_bind(conn, IP_ADDR_ANY, 36000);
if (err == ERR_OK)
{
/* Tell connection to go into listening mode. */
netconn_listen(conn);
while (1)
{
/* Grab new connection. */
accept_err = netconn_accept(conn, &newconn);
/* Process the new connection. */
if (accept_err == ERR_OK)
{
while (netconn_recv(newconn, &buf) == ERR_OK)
{
do
{
netbuf_data(buf, &data, &len);
tcp_rx_buf = (uint8_t *)data;
length = len-1;
if(tcp_rx_buf[0] == FC_CONFIG_PROJ)
{
W25Qxx_Write(W25QXX_BLOCK_1_ADDR,&tcp_rx_buf[1],length);
}
else if(tcp_rx_buf[0] == FC_GROUP_WRITE)
{
for(j=byte_cnt ; j<len ;j++)
{
rcv_data[j] = tcp_rx_buf[j];
}
W25Qxx_Write(write_addr,&tcp_rx_buf[1],length);
W25Qxx_Read(write_addr,rcv_buff,length);
write_addr += length;
byte_cnt += length;
}
else if(tcp_rx_buf[0] == FC_PROGRAM_DONE)
{
osSignalSet(W25Qxx_ThreadHandle,1);
length = 0;
byte_cnt = 0;
write_addr = W25QXX_BLOCK_2_ADDR;
}
netconn_write(newconn, data, len, NETCONN_COPY);
}
while (netbuf_next(buf) >= 0);
netbuf_delete(buf);
}
/* Close connection and discard connection identifier. */
netconn_close(newconn);
netconn_delete(newconn);
}
}
}
else
{
netconn_delete(conn);
}
}
/* USER CODE END 5 */
}
Any helps would be appreciated.
Mutaba
