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lwip_tcpecho_freertos.c
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1 /*
2 * @brief LWIP FreeRTOS TCP Echo example
3 *
4 * @note
5 * Copyright(C) NXP Semiconductors, 2012
6 * All rights reserved.
7 *
8 * @par
9 * Software that is described herein is for illustrative purposes only
10 * which provides customers with programming information regarding the
11 * LPC products. This software is supplied "AS IS" without any warranties of
12 * any kind, and NXP Semiconductors and its licensor disclaim any and
13 * all warranties, express or implied, including all implied warranties of
14 * merchantability, fitness for a particular purpose and non-infringement of
15 * intellectual property rights. NXP Semiconductors assumes no responsibility
16 * or liability for the use of the software, conveys no license or rights under any
17 * patent, copyright, mask work right, or any other intellectual property rights in
18 * or to any products. NXP Semiconductors reserves the right to make changes
19 * in the software without notification. NXP Semiconductors also makes no
20 * representation or warranty that such application will be suitable for the
21 * specified use without further testing or modification.
22 *
23 * @par
24 * Permission to use, copy, modify, and distribute this software and its
25 * documentation is hereby granted, under NXP Semiconductors' and its
26 * licensor's relevant copyrights in the software, without fee, provided that it
27 * is used in conjunction with NXP Semiconductors microcontrollers. This
28 * copyright, permission, and disclaimer notice must appear in all copies of
29 * this code.
30 */
31
32 #include "lwip/init.h"
33 #include "lwip/opt.h"
34 #include "lwip/sys.h"
35 #include "lwip/memp.h"
36 #include "lwip/tcpip.h"
37 #include "lwip/ip_addr.h"
38 #include "lwip/netif.h"
39 #include "lwip/timers.h"
40 #include "netif/etharp.h"
41
42 #if LWIP_DHCP
43 #include "lwip/dhcp.h"
44 #endif
45
46 #include "board.h"
47 #include "arch\lpc18xx_43xx_emac.h"
48 #include "arch\lpc_arch.h"
49 #include "arch\sys_arch.h"
50 #include "lpc_phy.h"/* For the PHY monitor support */
51 #include "tcpecho.h"
52
88 /* When building the example to run in FLASH, the number of available
89 pbufs and memory size (in lwipopts.h) and the number of descriptors
90 (in lpc_18xx43xx_emac_config.h) can be increased due to more available
91 IRAM. */
92
93 /*****************************************************************************
94 * Private types/enumerations/variables
95 ****************************************************************************/
96
97 /* NETIF data */
98 static struct netif lpc_netif;
99
100 /*****************************************************************************
101 * Public types/enumerations/variables
102 ****************************************************************************/
103
104 /*****************************************************************************
105 * Private functions
106 ****************************************************************************/
107
108 /* Sets up system hardware */
109 static void prvSetupHardware(void)
110 {
111 /* LED0 is used for the link status, on = PHY cable detected */
112 Board_Init();
113
114 /* Initial LED state is off to show an unconnected cable state */
115 Board_LED_Set(0, false);
116 }
117
118 /* Callback for TCPIP thread to indicate TCPIP init is done */
119 static void tcpip_init_done_signal(void *arg)
120 {
121 /* Tell main thread TCP/IP init is done */
122 *(s32_t *) arg = 1;
123 }
124
125 /* LWIP kickoff and PHY link monitor thread */
126 static portTASK_FUNCTION(vSetupIFTask, pvParameters) {
127 ip_addr_t ipaddr, netmask, gw;
128 volatile s32_t tcpipdone = 0;
129 uint32_t physts;
130 static int prt_ip = 0;
131
132 /* Wait until the TCP/IP thread is finished before
133 continuing or wierd things may happen */
134 LWIP_DEBUGF(LWIP_DBG_ON, ("Waiting for TCPIP thread to initialize...\n"));
135 tcpip_init(tcpip_init_done_signal, (void *) &tcpipdone);
136 while (!tcpipdone) {
137 msDelay(1);
138 }
139
140 LWIP_DEBUGF(LWIP_DBG_ON, ("Starting LWIP TCP echo server...\n"));
141
142 /* Static IP assignment */
143 #if LWIP_DHCP
144 IP4_ADDR(&gw, 0, 0, 0, 0);
145 IP4_ADDR(&ipaddr, 0, 0, 0, 0);
146 IP4_ADDR(&netmask, 0, 0, 0, 0);
147 #else
148 IP4_ADDR(&gw, 10, 1, 10, 1);
149 IP4_ADDR(&ipaddr, 10, 1, 10, 234);
150 IP4_ADDR(&netmask, 255, 255, 255, 0);
151 #endif
152
153 /* Add netif interface for lpc17xx_8x */
154 if (!netif_add(&lpc_netif, &ipaddr, &netmask, &gw, NULL, lpc_enetif_init,
155 tcpip_input)) {
156 LWIP_ASSERT("Net interface failed to initialize\r\n", 0);
157 }
158 netif_set_default(&lpc_netif);
159 netif_set_up(&lpc_netif);
160
161 /* Enable MAC interrupts only after LWIP is ready */
162 NVIC_SetPriority(ETHERNET_IRQn, config_ETHERNET_INTERRUPT_PRIORITY);
163 NVIC_EnableIRQ(ETHERNET_IRQn);
164
165 #if LWIP_DHCP
166 dhcp_start(&lpc_netif);
167 #endif
168
169 /* Initialize and start application */
170 tcpecho_init();
171
172 /* This loop monitors the PHY link and will handle cable events
173 via the PHY driver. */
174 while (1) {
175 /* Call the PHY status update state machine once in a while
176 to keep the link status up-to-date */
177 physts = lpcPHYStsPoll();
178
179 /* Only check for connection state when the PHY status has changed */
180 if (physts & PHY_LINK_CHANGED) {
181 if (physts & PHY_LINK_CONNECTED) {
182 Board_LED_Set(0, true);
183
184 /* Set interface speed and duplex */
185 if (physts & PHY_LINK_SPEED100) {
186 Chip_ENET_SetSpeed(LPC_ETHERNET, 1);
187 NETIF_INIT_SNMP(&lpc_netif, snmp_ifType_ethernet_csmacd, 100000000);
188 }
189 else {
190 Chip_ENET_SetSpeed(LPC_ETHERNET, 0);
191 NETIF_INIT_SNMP(&lpc_netif, snmp_ifType_ethernet_csmacd, 10000000);
192 }
193 if (physts & PHY_LINK_FULLDUPLX) {
194 Chip_ENET_SetDuplex(LPC_ETHERNET, true);
195 }
196 else {
197 Chip_ENET_SetDuplex(LPC_ETHERNET, false);
198 }
199
200 tcpip_callback_with_block((tcpip_callback_fn) netif_set_link_up,
201 (void *) &lpc_netif, 1);
202 }
203 else {
204 Board_LED_Set(0, false);
205 tcpip_callback_with_block((tcpip_callback_fn) netif_set_link_down,
206 (void *) &lpc_netif, 1);
207 }
208
209 DEBUGOUT("Link connect status: %d\r\n", ((physts & PHY_LINK_CONNECTED) != 0));
210
211 /* Delay for link detection (250mS) */
212 vTaskDelay(configTICK_RATE_HZ / 4);
213 }
214
215 /* Print IP address info */
216 if (!prt_ip) {
217 if (lpc_netif.ip_addr.addr) {
218 static char tmp_buff[16];
219 DEBUGOUT("IP_ADDR : %s\r\n", ipaddr_ntoa_r((const ip_addr_t *) &lpc_netif.ip_addr, tmp_buff, 16));
220 DEBUGOUT("NET_MASK : %s\r\n", ipaddr_ntoa_r((const ip_addr_t *) &lpc_netif.netmask, tmp_buff, 16));
221 DEBUGOUT("GATEWAY_IP : %s\r\n", ipaddr_ntoa_r((const ip_addr_t *) &lpc_netif.gw, tmp_buff, 16));
222 prt_ip = 1;
223 }
224 }
225 }
226 }
227
228 /*****************************************************************************
229 * Public functions
230 ****************************************************************************/
231
238 void msDelay(uint32_t ms)
239 {
240 vTaskDelay((configTICK_RATE_HZ * ms) / 1000);
241 }
242
247 int main(void)
248 {
249 prvSetupHardware();
250
251 /* Add another thread for initializing physical interface. This
252 is delayed from the main LWIP initialization. */
253 xTaskCreate(vSetupIFTask, (signed char *) "SetupIFx",
254 configMINIMAL_STACK_SIZE, NULL, (tskIDLE_PRIORITY + 1UL),
255 (xTaskHandle *) NULL);
256
257 /* Start the scheduler */
258 vTaskStartScheduler();
259
260 /* Should never arrive here */
261 return 1;
262 }
263