Other Parts Discussed in Thread: EK-TM4C1294XL
Hello everyone,
My retirement is to transfer collected adc data from TM4C1294NCPDT controller to particular website using TCP/IP protocol stack, I found some example code on TI's forum here, I just followed the code, when i type the ip, it shows the web browser, but there is no symptom of TCP data packets transfer.
Note : I just add tcb_bind() with my code but its still not worked for me. Please anyone tell me what is issue, and guide me to solve the problem
My computer as well as my board both are connected to my office LAN port and Here is my code ,
//*****************************************************************************
//
// enet_lwip.c - Sample WebServer Application using lwIP.
//
// Copyright (c) 2013-2017 Texas Instruments Incorporated. All rights reserved.
// Software License Agreement
//
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
//
// This is part of revision 2.1.4.178 of the EK-TM4C1294XL Firmware Package.
//
//*****************************************************************************
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "driverlib/flash.h"
#include "driverlib/interrupt.h"
#include "driverlib/gpio.h"
#include "driverlib/rom_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/systick.h"
#include "utils/locator.h"
#include "utils/lwiplib.h"
#include "utils/ustdlib.h"
#include "utils/uartstdio.h"
#include "httpserver_raw/httpd.h"
#include "tcpecho_raw/echo.h"
#include "tcpecho_raw/echo.c"
#include "drivers/pinout.h"
#include "lwip/debug.h"
#include "lwip/stats.h"
#include "lwip/tcp.h"
#include "unit/lwipopts.h"
//*****************************************************************************
//
//! \addtogroup example_list
//! <h1>Ethernet with lwIP (enet_lwip)</h1>
//!
//! This example application demonstrates the operation of the Tiva
//! Ethernet controller using the lwIP TCP/IP Stack. DHCP is used to obtain
//! an Ethernet address. If DHCP times out without obtaining an address,
//! AutoIP will be used to obtain a link-local address. The address that is
//! selected will be shown on the UART.
//!
//! UART0, connected to the ICDI virtual COM port and running at 115,200,
//! 8-N-1, is used to display messages from this application. Use the
//! following command to re-build the any file system files that change.
//!
//! ../../../../tools/bin/makefsfile -i fs -o enet_fsdata.h -r -h -q
//!
//! For additional details on lwIP, refer to the lwIP web page at:
//! savannah.nongnu.org/.../
//
//*****************************************************************************
//*****************************************************************************
//
extern void echo_init(void);
err_t echo_recv(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err);
err_t echo_poll(void *arg, struct tcp_pcb *tpcb);
void echo_error(void *arg, err_t err);
err_t echo_sent(void *arg, struct tcp_pcb *tpcb, u16_t len);
err_t err;
//extern void lwip_init();
uint32_t tcp_send_packet(void);
static struct tcp_pcb *testpcb; //pcb global
// Defines for setting up the system clock.
//
//*****************************************************************************
#define SYSTICKHZ 100
#define SYSTICKMS (1000 / SYSTICKHZ)
//*****************************************************************************
//
// Interrupt priority definitions. The top 3 bits of these values are
// significant with lower values indicating higher priority interrupts.
//
//*****************************************************************************
#define SYSTICK_INT_PRIORITY 0x80
#define ETHERNET_INT_PRIORITY 0xC0
//*****************************************************************************
//
// The current IP address.
//
//*****************************************************************************
uint32_t g_ui32IPAddress;
//*****************************************************************************
//
// The system clock frequency.
//
//*****************************************************************************
uint32_t g_ui32SysClock;
//*****************************************************************************
//
// Volatile global flag to manage LED blinking, since it is used in interrupt
// and main application. The LED blinks at the rate of SYSTICKHZ.
//
//*****************************************************************************
volatile bool g_bLED;
//*****************************************************************************
//
// The error routine that is called if the driver library encounters an error.
//
//*****************************************************************************
#ifdef DEBUG
void
__error__(char *pcFilename, uint32_t ui32Line)
{
}
#endif
//*****************************************************************************
//
// Display an lwIP type IP Address.
//
//*****************************************************************************
void
DisplayIPAddress(uint32_t ui32Addr)
{
char pcBuf[16];
//
// Convert the IP Address into a string.
//
usprintf(pcBuf, "%d.%d.%d.%d", ui32Addr & 0xff, (ui32Addr >> 8) & 0xff,
(ui32Addr >> 16) & 0xff, (ui32Addr >> 24) & 0xff);
//
// Display the string.
//
UARTprintf(pcBuf);
}
//*****************************************************************************
//
// Required by lwIP library to support any host-related timer functions.
//
//*****************************************************************************
void
lwIPHostTimerHandler(void)
{
uint32_t ui32NewIPAddress;
//
// Get the current IP address.
//
ui32NewIPAddress = lwIPLocalIPAddrGet();
//
// See if the IP address has changed.
//
if(ui32NewIPAddress != g_ui32IPAddress)
{
//
// See if there is an IP address assigned.
//
if(ui32NewIPAddress == 0xffffffff)
{
//
// Indicate that there is no link.
//
UARTprintf("Waiting for link.\n");
}
else if(ui32NewIPAddress == 0)
{
//
// There is no IP address, so indicate that the DHCP process is
// running.
//
UARTprintf("Waiting for IP address.\n");
}
else
{
//
// Display the new IP address.
//
UARTprintf("IP Address: ");
DisplayIPAddress(ui32NewIPAddress);
UARTprintf("\nOpen a browser and enter the IP address.\n");
}
//
// Save the new IP address.
//
g_ui32IPAddress = ui32NewIPAddress;
}
//
// If there is not an IP address.
//
if((ui32NewIPAddress == 0) || (ui32NewIPAddress == 0xffffffff))
{
//
// Do nothing and keep waiting.
//
}
}
//*****************************************************************************
//
// The interrupt handler for the SysTick interrupt.
//
//*****************************************************************************
void
SysTickIntHandler(void)
{
//
// Call the lwIP timer handler.
//
lwIPTimer(SYSTICKMS);
//
// Tell the application to change the state of the LED (in other words
// blink).
//
g_bLED = true;
}
err_t tcpRecvCallback(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err)
{
UARTprintf("Data recieved.\n");
if (p == NULL) {
UARTprintf("The remote host closed the connection.\n");
UARTprintf("Closing the connection.\n");
tcp_close(testpcb);
return ERR_ABRT;
} else {
UARTprintf("Number of pbufs %d\n", pbuf_clen(p));
UARTprintf("Contents of pbuf %s\n", (char *)p->payload);
}
return 0;
}
uint32_t tcp_send_packet(void)
{
char *string = "HEAD /process.php?data1=12&data2=5 HTTP/1.0\r\nHost: mywebsite.com\r\n\r\n ";
uint32_t len = strlen(string);
err = tcp_write(testpcb, string, strlen(string), TCP_WRITE_FLAG_COPY);
if (err) {
UARTprintf("ERROR: Code: %d (tcp_send_packet :: tcp_write)\n", err);
return 1;
}
/* now send */
err = tcp_output(testpcb);
if (err) {
UARTprintf("ERROR: Code: %d (tcp_send_packet :: tcp_output)\n", err);
return 1;
}
return 0;
}
err_t connectCallback(void *arg, struct tcp_pcb *tpcb, err_t err)
{
UARTprintf("Connection Established.\n");
UARTprintf("Sending a packet\n");
tcp_send_packet();
return 0;
}
void tcp_setup(void)
{
uint32_t data = 0xdeadbeef;
/* create an ip */
struct ip_addr ip;
IP4_ADDR(&ip, 192,168,70,106); //IP of the computer
/* create the control block */
testpcb = tcp_new(); //testpcb is a global struct tcp_pcb
tcp_arg(testpcb, &data);
tcp_bind(testpcb,&ip,22);
tcp_err(testpcb, echo_error);
tcp_recv(testpcb, tcpRecvCallback);
tcp_sent(testpcb, echo_sent);
/* now connect */
tcp_connect(testpcb, &ip, 22, connectCallback);
UARTprintf("PCB CREATED\n");
}
//*****************************************************************************
//
// This example demonstrates the use of the Ethernet Controller.
//
//*****************************************************************************
int
main(void)
{
uint32_t ui32User0, ui32User1;
uint8_t pui8MACArray[8];
//
// Make sure the main oscillator is enabled because this is required by
// the PHY. The system must have a 25MHz crystal attached to the OSC
// pins. The SYSCTL_MOSC_HIGHFREQ parameter is used when the crystal
// frequency is 10MHz or higher.
//
SysCtlMOSCConfigSet(SYSCTL_MOSC_HIGHFREQ);
//
// Run from the PLL at 120 MHz.
//
g_ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
SYSCTL_OSC_MAIN |
SYSCTL_USE_PLL |
SYSCTL_CFG_VCO_480), 120000000);
//
// Configure the device pins.
//
PinoutSet(true, false);
//
// Configure UART.
//
UARTStdioConfig(0, 115200, g_ui32SysClock);
//
// Clear the terminal and print banner.
//
UARTprintf("\033[2J\033[H");
UARTprintf("Ethernet lwIP example\n\n");
//
// Configure Port N1 for as an output for the animation LED.
//
MAP_GPIOPinTypeGPIOOutput(GPIO_PORTN_BASE, GPIO_PIN_1);
//
// Initialize LED to OFF (0)
//
MAP_GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, ~GPIO_PIN_1);
//
// Configure SysTick for a periodic interrupt.
//
MAP_SysTickPeriodSet(g_ui32SysClock / SYSTICKHZ);
MAP_SysTickEnable();
MAP_SysTickIntEnable();
//
// Configure the hardware MAC address for Ethernet Controller filtering of
// incoming packets. The MAC address will be stored in the non-volatile
// USER0 and USER1 registers.
//
MAP_FlashUserGet(&ui32User0, &ui32User1);
if((ui32User0 == 0xffffffff) || (ui32User1 == 0xffffffff))
{
//
// We should never get here. This is an error if the MAC address has
// not been programmed into the device. Exit the program.
// Let the user know there is no MAC address
//
UARTprintf("No MAC programmed!\n");
while(1)
{
}
}
//
// Tell the user what we are doing just now.
//
UARTprintf("Waiting for IP.\n");
//
// Convert the 24/24 split MAC address from NV ram into a 32/16 split MAC
// address needed to program the hardware registers, then program the MAC
// address into the Ethernet Controller registers.
//
pui8MACArray[0] = ((ui32User0 >> 0) & 0xff);
pui8MACArray[1] = ((ui32User0 >> 8) & 0xff);
pui8MACArray[2] = ((ui32User0 >> 16) & 0xff);
pui8MACArray[3] = ((ui32User1 >> 0) & 0xff);
pui8MACArray[4] = ((ui32User1 >> 8) & 0xff);
pui8MACArray[5] = ((ui32User1 >> 16) & 0xff);
//
// Initialize the lwIP library, using DHCP.
//
// lwip_init();
lwIPInit(g_ui32SysClock, pui8MACArray, 0, 0, 0, IPADDR_USE_DHCP);
//
// Setup the device locator service.
//
LocatorInit();
LocatorMACAddrSet(pui8MACArray);
LocatorAppTitleSet("EK-TM4C1294XL enet_io");
//
// Initialize a sample httpd server.
//
// httpd_init();
echo_init();
tcp_setup();
//
// Set the interrupt priorities. We set the SysTick interrupt to a higher
// priority than the Ethernet interrupt to ensure that the file system
// tick is processed if SysTick occurs while the Ethernet handler is being
// processed. This is very likely since all the TCP/IP and HTTP work is
// done in the context of the Ethernet interrupt.
//
MAP_IntPrioritySet(INT_EMAC0, ETHERNET_INT_PRIORITY);
MAP_IntPrioritySet(FAULT_SYSTICK, SYSTICK_INT_PRIORITY);
//
// Loop forever, processing the LED blinking. All the work is done in
// interrupt handlers.
//
while(1)
{
//
// Wait till the SysTick Interrupt indicates to change the state of the
// LED.
//
while(g_bLED == false)
{
}
//
// Clear the flag.
//
g_bLED = false;
//
// Toggle the LED.
//
MAP_GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1,
(MAP_GPIOPinRead(GPIO_PORTN_BASE, GPIO_PIN_1) ^
GPIO_PIN_1));
}
}
