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Nut/OS
4.10.3
API Reference
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Nut/OS
4.10.3
API Reference
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00001 00061 #define MY_MAC {0x00,0x06,0x98,0x20,0x00,0x00} 00062 #define MY_IP "192.168.192.100" 00063 #define MY_MASK "255.255.255.0" 00064 #define MY_PORT 12345 00065 00066 #include <string.h> 00067 #include <stdio.h> 00068 00069 #include <dev/board.h> 00070 #include <dev/gpio.h> 00071 00072 #include <sys/heap.h> 00073 #include <sys/thread.h> 00074 #include <sys/timer.h> 00075 #include <sys/socket.h> 00076 00077 #include <arpa/inet.h> 00078 #include <net/route.h> 00079 #include <netdb.h> 00080 00081 #include <pro/dhcp.h> 00082 00083 #if defined(ETHERNUT1) || defined(ETHERNUT2) 00084 #define INBANK 2 /* PORTB */ 00085 #define INPIN1 0 00086 #define INPIN2 1 00087 #define INPIN3 2 00088 #define INPIN4 3 00089 #define OUTBANK 2 /* PORTB */ 00090 #define OUTPIN1 4 00091 #define OUTPIN2 5 00092 #define OUTPIN3 6 00093 #define OUTPIN4 7 00094 #elif defined(ETHERNUT3) 00095 /* Uses same expansion port pins as Ethernut 1/2. */ 00096 #define INBANK 0 /* PIO */ 00097 #define INPIN1 0 00098 #define INPIN2 1 00099 #define INPIN3 2 00100 #define INPIN4 3 00101 #define OUTBANK 0 /* PIO */ 00102 #define OUTPIN1 4 00103 #define OUTPIN2 5 00104 #define OUTPIN3 6 00105 #define OUTPIN4 7 00106 #elif defined(AT91SAM7X_EK) 00107 #define INBANK 1 /* PIOA Joystick */ 00108 #define INPIN1 21 00109 #define INPIN2 22 00110 #define INPIN3 23 00111 #define INPIN4 24 00112 #define OUTBANK 2 /* PIOB User LEDs */ 00113 #define OUTPIN1 19 00114 #define OUTPIN2 20 00115 #define OUTPIN3 21 00116 #define OUTPIN4 22 00117 #elif defined(AT91SAM9260_EK) 00118 #define INBANK 1 /* PIOA */ 00119 #define INPIN1 30 /* Push button 3 */ 00120 #define INPIN2 31 /* Push button 4 */ 00121 #define OUTBANK 1 /* PIOA */ 00122 #define OUTPIN1 6 /* User LED */ 00123 #define OUTPIN2 9 /* Power LED */ 00124 #elif defined(EVK1100) 00125 #define INBANK 0 /* PA Joystick */ 00126 #define INPIN1 25 00127 #define INPIN2 26 00128 #define INPIN3 27 00129 #define INPIN4 28 00130 #define OUTBANK 1 /* PIOB User LEDs */ 00131 #define OUTPIN1 27 00132 #define OUTPIN2 28 00133 #define OUTPIN3 29 00134 #define OUTPIN4 30 00135 #endif 00136 00137 /* 00138 * Previous AVR versions read the full PIN register. Now each input 00139 * and output pin is freely configurable (within a single port bank). 00140 * This routine collects all pins as they would have been read 00141 * from a single 8-bit register. 00142 */ 00143 00144 #ifdef INBANK 00145 static int PortStatus(void) 00146 { 00147 int stat = 0; 00148 00149 #ifdef INPIN1 00150 stat |= GpioPinGet(INBANK, INPIN1); 00151 #endif 00152 #ifdef INPIN2 00153 stat |= GpioPinGet(INBANK, INPIN2) << 1; 00154 #endif 00155 #ifdef INPIN3 00156 stat |= GpioPinGet(INBANK, INPIN3) << 2; 00157 #endif 00158 #ifdef INPIN4 00159 stat |= GpioPinGet(INBANK, INPIN4) << 3; 00160 #endif 00161 00162 00163 #ifdef OUTBANK 00164 #ifdef OUTPIN1 00165 stat |= GpioPinGet(OUTBANK, OUTPIN1) << 4; 00166 #endif 00167 #ifdef OUTPIN2 00168 stat |= GpioPinGet(OUTBANK, OUTPIN2) << 5; 00169 #endif 00170 #ifdef OUTPIN3 00171 stat |= GpioPinGet(OUTBANK, OUTPIN3) << 6; 00172 #endif 00173 #ifdef OUTPIN4 00174 stat |= GpioPinGet(OUTBANK, OUTPIN4) << 7; 00175 #endif 00176 #endif /* OUTBANK */ 00177 00178 return stat; 00179 } 00180 #endif 00181 /* 00182 * Process client requests. 00183 */ 00184 void ProcessRequests(FILE * stream) 00185 { 00186 char buff[128]; 00187 char *cp; 00188 int stat = -1; 00189 00190 fputs("200 Welcome to portdio. Type help to get help.\r\n", stream); 00191 for (;;) { 00192 fflush(stream); 00193 00194 /* 00195 * Read a line from the client. Ignore 00196 * blank lines. 00197 */ 00198 if (fgets(buff, sizeof(buff), stream) == 0) 00199 break; 00200 if ((cp = strchr(buff, '\r')) != 0) 00201 *cp = 0; 00202 if ((cp = strchr(buff, '\n')) != 0) 00203 *cp = 0; 00204 if (buff[0] == 0) 00205 continue; 00206 00207 /* 00208 * Memory info. 00209 */ 00210 if (strncmp(buff, "memory", strlen(buff)) == 0) { 00211 fprintf(stream, "210 %u bytes RAM free\r\n", (unsigned int)NutHeapAvailable()); 00212 continue; 00213 } 00214 00215 #ifdef OUTBANK 00216 /* 00217 * Reset output bit. 00218 */ 00219 if (strlen(buff) > 1 && strncmp(buff, "reset", strlen(buff) - 1) == 0) { 00220 int ok = 1; 00221 switch (buff[strlen(buff) - 1]) { 00222 #ifdef OUTPIN1 00223 case '1': 00224 GpioPinSetLow(OUTBANK, OUTPIN1); 00225 break; 00226 #endif 00227 #ifdef OUTPIN2 00228 case '2': 00229 GpioPinSetLow(OUTBANK, OUTPIN2); 00230 break; 00231 #endif 00232 #ifdef OUTPIN3 00233 case '3': 00234 GpioPinSetLow(OUTBANK, OUTPIN3); 00235 break; 00236 #endif 00237 #ifdef OUTPIN4 00238 case '4': 00239 GpioPinSetLow(OUTBANK, OUTPIN4); 00240 break; 00241 #endif 00242 default: 00243 ok = 0; 00244 break; 00245 } 00246 if (ok) { 00247 fputs("210 OK\r\n", stream); 00248 } else 00249 fputs("410 Bad pin\r\n", stream); 00250 continue; 00251 } 00252 00253 /* 00254 * Set output bit. 00255 */ 00256 if (strlen(buff) > 1 && strncmp(buff, "set", strlen(buff) - 1) == 0) { 00257 int ok = 1; 00258 switch (buff[strlen(buff) - 1]) { 00259 #ifdef OUTPIN1 00260 case '1': 00261 GpioPinSetHigh(OUTBANK, OUTPIN1); 00262 break; 00263 #endif 00264 #ifdef OUTPIN2 00265 case '2': 00266 GpioPinSetHigh(OUTBANK, OUTPIN2); 00267 break; 00268 #endif 00269 #ifdef OUTPIN3 00270 case '3': 00271 GpioPinSetHigh(OUTBANK, OUTPIN3); 00272 break; 00273 #endif 00274 #ifdef OUTPIN4 00275 case '4': 00276 GpioPinSetHigh(OUTBANK, OUTPIN4); 00277 break; 00278 #endif 00279 default: 00280 ok = 0; 00281 break; 00282 } 00283 if (ok) { 00284 fputs("210 OK\r\n", stream); 00285 } else 00286 fputs("410 Bad pin\r\n", stream); 00287 continue; 00288 } 00289 #endif /* OUTBANK */ 00290 00291 #ifdef INBANK 00292 /* 00293 * Port status. 00294 */ 00295 if (strncmp(buff, "query", strlen(buff)) == 0) { 00296 stat = PortStatus(); 00297 fprintf(stream, "210 %02X\r\n", stat); 00298 continue; 00299 } 00300 00301 /* 00302 * wait for status change. 00303 */ 00304 if (strncmp(buff, "wait", strlen(buff)) == 0) { 00305 while (stat == PortStatus()) 00306 NutThreadYield(); 00307 stat = PortStatus(); 00308 fprintf(stream, "210 %02X\r\n", stat); 00309 continue; 00310 } 00311 #endif /* INBANK */ 00312 00313 /* 00314 * Help. 00315 */ 00316 fputs("400 List of commands follows\r\n", stream); 00317 fputs("memory\tQueries number of RAM bytes free\r\n", stream); 00318 #if OUTBANK 00319 fputs("reset#\tSet output bit 1..4 low\r\n", stream); 00320 fputs("set#\tSet output bit 1..4 high\r\n", stream); 00321 #endif 00322 #if INBANK 00323 fputs("query\tQuery digital i/o status\r\n", stream); 00324 fputs("wait\tWaits for digital i/o change\r\n", stream); 00325 #endif 00326 fputs(".\r\n", stream); 00327 } 00328 } 00329 00330 /* 00331 * Init Port D 00332 */ 00333 void init_dio(void) 00334 { 00335 /* Configure input pins, enable pull up. */ 00336 #ifdef INBANK 00337 #ifdef INPIN1 00338 GpioPinConfigSet(INBANK, INPIN1, GPIO_CFG_PULLUP); 00339 #endif 00340 #ifdef INPIN2 00341 GpioPinConfigSet(INBANK, INPIN2, GPIO_CFG_PULLUP); 00342 #endif 00343 #ifdef INPIN3 00344 GpioPinConfigSet(INBANK, INPIN3, GPIO_CFG_PULLUP); 00345 #endif 00346 #ifdef INPIN4 00347 GpioPinConfigSet(INBANK, INPIN4, GPIO_CFG_PULLUP); 00348 #endif 00349 #endif /* INBANK */ 00350 00351 /* Configure output pins, set to low. */ 00352 #ifdef OUTBANK 00353 #ifdef OUTPIN1 00354 GpioPinConfigSet(OUTBANK, OUTPIN1, GPIO_CFG_OUTPUT); 00355 GpioPinSetLow(OUTBANK, OUTPIN1); 00356 #endif 00357 #ifdef OUTPIN2 00358 GpioPinConfigSet(OUTBANK, OUTPIN2, GPIO_CFG_OUTPUT); 00359 GpioPinSetLow(OUTBANK, OUTPIN2); 00360 #endif 00361 #ifdef OUTPIN3 00362 GpioPinConfigSet(OUTBANK, OUTPIN3, GPIO_CFG_OUTPUT); 00363 GpioPinSetLow(OUTBANK, OUTPIN3); 00364 #endif 00365 #ifdef OUTPIN4 00366 GpioPinConfigSet(OUTBANK, OUTPIN4, GPIO_CFG_OUTPUT); 00367 GpioPinSetLow(OUTBANK, OUTPIN4); 00368 #endif 00369 #endif /* OUTBANK */ 00370 } 00371 00372 #ifdef DEV_ETHER 00373 00374 void service(void) 00375 { 00376 TCPSOCKET *sock; 00377 FILE *stream; 00378 00379 /* 00380 * Loop endless for connections. 00381 */ 00382 for (;;) { 00383 /* 00384 * Create a socket. 00385 */ 00386 sock = NutTcpCreateSocket(); 00387 00388 /* 00389 * Listen at the configured port. If we return, we got a client. 00390 */ 00391 NutTcpAccept(sock, MY_PORT); 00392 00393 /* 00394 * Create a stream from the socket. 00395 */ 00396 stream = _fdopen((int) sock, "r+b"); 00397 00398 /* 00399 * Process client requests. 00400 */ 00401 ProcessRequests(stream); 00402 00403 /* 00404 * Destroy our device. 00405 */ 00406 fclose(stream); 00407 00408 /* 00409 * Close our socket. 00410 */ 00411 NutTcpCloseSocket(sock); 00412 } 00413 } 00414 00415 THREAD(service_thread, arg) 00416 { 00417 for (;;) 00418 service(); 00419 } 00420 00421 #endif /* DEV_ETHER */ 00422 00423 /* 00424 * Main application routine. 00425 * 00426 * Nut/OS automatically calls this entry after initialization. 00427 */ 00428 int main(void) 00429 { 00430 uint8_t my_mac[] = MY_MAC; 00431 00432 /* 00433 * Initialize digital I/O. 00434 */ 00435 init_dio(); 00436 00437 #ifdef DEV_ETHER 00438 /* 00439 * Register Realtek controller at address 8300 hex 00440 * and interrupt 5. 00441 */ 00442 NutRegisterDevice(&DEV_ETHER, 0x8300, 5); 00443 00444 /* 00445 * Configure lan interface. 00446 */ 00447 if (NutDhcpIfConfig(DEV_ETHER_NAME, 0, 60000) && NutDhcpIfConfig("eth0", my_mac, 60000)) { 00448 /* 00449 * No DHCP server available. Use hard coded values. 00450 */ 00451 uint32_t ip_addr = inet_addr(MY_IP); /* ICCAVR fix. */ 00452 NutNetIfConfig("eth0", my_mac, ip_addr, inet_addr(MY_MASK)); 00453 } 00454 00455 /* 00456 * Start another service thread to allow 00457 * two concurrent connections. 00458 */ 00459 NutThreadCreate("sback", service_thread, 0, 1384); 00460 00461 for (;;) 00462 service(); 00463 #endif /* DEV_ETHER */ 00464 00465 return 0; 00466 }