Line No. | Rev | Author | Line |
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1 | 6 | kaklik | //***************************************************************************** |
2 | // File Name : netstacktest.c |
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3 | // |
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4 | // Title : example usage of network library functions |
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5 | // Revision : 1.0 |
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6 | // Notes : |
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7 | // Target MCU : Atmel AVR series |
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8 | // Editor Tabs : 4 |
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9 | // |
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10 | // Revision History: |
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11 | // When Who Description of change |
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12 | // ----------- ----------- ----------------------- |
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13 | // 10-Aug-2005 pstang Created the program |
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14 | //***************************************************************************** |
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15 | |||
16 | #include <avr/io.h> |
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17 | #include <string.h> |
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18 | #include <stdlib.h> |
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19 | |||
20 | // include avrlib basics |
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21 | #include "global.h" |
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22 | #include "timer.h" |
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23 | #include "uart.h" |
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24 | #include "rprintf.h" |
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25 | #include "vt100.h" |
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26 | #include "debug.h" |
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27 | |||
28 | // include network support |
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29 | #include "net/net.h" |
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30 | #include "net/nic.h" |
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31 | #include "net/arp.h" |
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32 | #include "net/icmp.h" |
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33 | #include "net/ip.h" |
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34 | #include "net/netstack.h" |
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35 | |||
36 | // network defines |
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37 | #define IPADDRESS IPDOT(192l,168l,1l,12l) |
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38 | #define NETMASK IPDOT(255l,255l,255l,0l) |
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39 | #define GATEWAY IPDOT(192l,168l,1l,1l) |
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40 | |||
41 | #define LOOPBACK_PORT 7 // UDP packets sent to this port will be returned to sender |
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42 | #define CONTROL_PORT 4950 // UDP packets sent to this port will be used for control |
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43 | #define SERIAL_PORT 4951 // UDP packets sent to this port will be printed via serial |
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44 | |||
45 | // timer defines |
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46 | #define TIMER_PRESCALE 1024 |
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47 | #define TIMER_INTERVAL (F_CPU/TIMER_PRESCALE/100) // 100ms interval |
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48 | |||
49 | // global variables |
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50 | static volatile unsigned long UptimeMs; |
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51 | |||
52 | // functions |
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53 | void processCommand(u16 len, u08* data); |
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54 | void serviceLocal(void); |
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55 | void systickHandler(void); |
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56 | |||
57 | // prototypes |
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58 | int main(void) |
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59 | { |
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60 | struct netEthAddr myEthAddress; |
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61 | |||
62 | timerInit(); |
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63 | uartInit(); |
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64 | uartSetBaudRate(115200); |
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65 | rprintfInit(uartSendByte); |
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66 | timerPause(100); |
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67 | vt100ClearScreen(); |
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68 | rprintf("\r\nNetwork Stack Example\r\n"); |
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69 | |||
70 | // initialize systick timer |
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71 | rprintf("Initializing Periodic Timer\r\n"); |
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72 | timer2SetPrescaler(TIMERRTC_CLK_DIV1024); |
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73 | timerAttach(TIMER2OVERFLOW_INT, systickHandler); |
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74 | |||
75 | // init network stack |
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76 | rprintf("Initializing Network Stack\r\n"); |
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77 | netstackInit(IPADDRESS, NETMASK, GATEWAY); |
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78 | |||
79 | nicGetMacAddress(&myEthAddress.addr[0]); |
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80 | rprintfProgStrM("Eth Addr is: "); netPrintEthAddr(&myEthAddress); rprintfCRLF(); |
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81 | rprintfProgStrM("IP Addr is: "); netPrintIPAddr(ipGetConfig()->ip); rprintfCRLF(); |
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82 | |||
83 | rprintf("Network Stack is up!\r\n"); |
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84 | rprintf("Starting packet receive loop\r\n"); |
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85 | |||
86 | while(1) |
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87 | { |
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88 | // service local stuff |
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89 | serviceLocal(); |
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90 | // service the network |
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91 | netstackService(); |
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92 | } |
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93 | |||
94 | return 0; |
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95 | } |
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96 | |||
97 | |||
98 | void netstackUDPIPProcess(unsigned int len, udpip_hdr* packet) |
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99 | { |
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100 | u16 payloadlen=0; |
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101 | u08* payloaddata=0; |
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102 | u16 i; |
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103 | |||
104 | // get UDP payload length |
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105 | payloadlen = htons(packet->udp.udplen); |
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106 | payloadlen -= 8; // subtract header |
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107 | // get UDP payload data |
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108 | payloaddata = &((unsigned char*)packet)[IP_HEADER_LEN+UDP_HEADER_LEN]; |
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109 | |||
110 | rprintf("UDP packet, len: %d\r\n", len); |
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111 | // debugPrintHexTable(len, (unsigned char*)packet); |
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112 | |||
113 | if(packet->udp.destport == HTONS(CONTROL_PORT)) |
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114 | { |
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115 | // command packet |
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116 | processCommand(payloadlen, payloaddata); |
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117 | } |
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118 | else if(packet->udp.destport == HTONS(SERIAL_PORT)) |
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119 | { |
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120 | // serial output |
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121 | for(i=0; i<payloadlen; i++) |
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122 | uartSendByte(payloaddata[i]); |
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123 | } |
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124 | else if(packet->udp.destport == HTONS(LOOPBACK_PORT)) |
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125 | { |
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126 | // loopback - return packet to sender |
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127 | udpSend(htonl(packet->ip.srcipaddr), LOOPBACK_PORT, payloadlen, payloaddata); |
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128 | } |
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129 | } |
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130 | |||
131 | |||
132 | void netstackTCPIPProcess(unsigned int len, tcpip_hdr* packet) |
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133 | { |
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134 | rprintf("Received TCP/IP Packet: len=%d\r\n", len); |
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135 | } |
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136 | |||
137 | |||
138 | void processCommand(u16 len, u08* data) |
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139 | { |
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140 | rprintf("Received UDP command: CMD=0x%x ARG0=0x%x\r\n", data[0], data[1]); |
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141 | |||
142 | // do something based on command |
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143 | switch(data[0]) |
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144 | { |
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145 | case 'C': // set PORTC |
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146 | PORTC = data[1]; |
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147 | break; // set DDRC |
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148 | case 'c': |
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149 | PORTC = data[1]; |
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150 | break; |
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151 | default: |
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152 | rprintf("Unknown UDP command\r\n"); |
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153 | break; |
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154 | } |
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155 | } |
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156 | |||
157 | void serviceLocal(void) |
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158 | { |
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159 | int c; |
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160 | unsigned char buffer[100]; |
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161 | |||
162 | if( (c = uartGetByte()) != -1) |
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163 | { |
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164 | // echo command to terminal |
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165 | rprintfChar(c); |
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166 | // process command |
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167 | switch(c) |
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168 | { |
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169 | case 'i': |
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170 | rprintfProgStrM("\r\nInitializing Ethernet Controller\r\n"); |
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171 | nicInit(); |
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172 | break; |
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173 | case 'd': |
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174 | rprintfProgStrM("\r\nEthernet Controller State\r\n"); |
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175 | nicRegDump(); |
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176 | break; |
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177 | case 't': |
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178 | rprintfProgStrM("\r\nCurrent Uptime: "); |
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179 | rprintfNum(10, 9, FALSE, ' ', UptimeMs); |
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180 | rprintfProgStrM("ms\r\n"); |
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181 | break; |
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182 | case 'c': |
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183 | rprintfProgStrM("\r\nCrashing System....\r\n"); |
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184 | while(1); |
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185 | break; |
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186 | case 'u': |
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187 | rprintfProgStrM("\r\nSending UDP packet\r\n"); |
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188 | strcpy(&buffer[ETH_HEADER_LEN+IP_HEADER_LEN+UDP_HEADER_LEN], "hello"); |
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189 | udpSend((ipGetConfig()->ip|~ipGetConfig()->netmask), CONTROL_PORT, 6, &buffer[ETH_HEADER_LEN+IP_HEADER_LEN+UDP_HEADER_LEN]); |
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190 | break; |
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191 | case '?': |
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192 | rprintfProgStrM("\r\nCommands:\r\n"); |
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193 | rprintfProgStrM("(i) Initialize Ethernet Controller\r\n"); |
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194 | rprintfProgStrM("(d) Dump Ethernet Controller State\r\n"); |
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195 | rprintfProgStrM("(u) Send Broadcast UDP frame\r\n"); |
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196 | rprintfProgStrM("(t) Print current uptime\r\n"); |
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197 | rprintfProgStrM("(?) Help\r\n"); |
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198 | break; |
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199 | case '\r': |
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200 | default: |
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201 | break; |
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202 | } |
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203 | // print new prompt |
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204 | rprintfProgStrM("\r\ncmd>"); |
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205 | } |
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206 | } |
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207 | |||
208 | void systickHandler(void) |
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209 | { |
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210 | // set timer for 10ms interval |
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211 | TCNT2 = (unsigned char)-TIMER_INTERVAL; |
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212 | // count up on uptime |
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213 | UptimeMs += 10; |
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214 | } |
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