Lorcan Smith
/
Enet_SPI
SNMP agent attached to SPI slave
main.cpp
- Committer:
- lorcansmith
- Date:
- 2012-09-06
- Revision:
- 2:25e12a7fe0aa
- Parent:
- 0:2a53a4c3238c
File content as of revision 2:25e12a7fe0aa:
/* Generated: Enet_SPI_LPC1768.bin mbed test software for Ethernet HTTPServer with simultaneous SPI for 4 data byte updates Version Date Author Change 0.2: 06/10/11 LS Add block checksum character to SPI data 0.3: 07/10/11 LS Add SPI read from cmd_buf 0.4: 13/10/11 LS Integrated with HTTP server example code 0.5: 18/10/11 LS Initial file handling 0.6: 26/10/11 LS File IO handled by SPI_server class 0.78: 17/11/11 LS Add SNMP files for system info reporting, but HTTP svr.bind disabled 0.79 12/12/11 LS Reads network addresses from file & uses enterprise address 0.80 18/12/11 LS Save last number read in read_addrs_from_file(). 0.81 22/12/11 LS Add new_cmd_idx to indicate which parameter has been set (0 for none). 0.82 22/12/11 LS Add blinker to show comms activity 0.83 23/12/11 LS Clear cmd_buf[0] after SPI been read 4 times 0.84 27/12/11 LS snmp_fw_version & f3k_fw_version saved as 4 char strings 0.85 29/12/11 LS Update f3k_sys_set_value() & f3k_sys_set_test() to enable net address change 0.90 29/12/11 LS Add 3-step routine for passing commands over SPI bus from cmd_buf 0.94 10/01/12 LS Add led_link = LPC_GPIO1->FIOPIN & (1<<25) in netservice.cpp 0.95 11/01/12 LS Fix f3k_speed reporting error in private_mib.c 0.96 12/01/12 LS Move led_link = LPC_GPIO1->FIOPIN & (1<<25) to eth_poll in eth_drv.cpp 0.98 26/04/12 LS Increase snmp_publiccommunity[7] to [21] and allow this to be set from file 0.99 08/06/12 LS #define SNMP_TRAP_DESTINATIONS 1. Declare th_ad[4] for host trap address Add init_traps() to ensure head-head link status trap is sent 21/06/12 Add check for changes to IO bytes and chk_SPI_active() every 60 seconds 1.00 22/06/12 LS Save SNMP changes to net addresses & mask4_IO_registers in net_adrs.txt http://192.168.99.99/rpc/offset,604 writes 604 to reg_offset http://192.168.99.99/rpc/led2/write,1 writes 1 to led2 http://192.168.99.99/files/IO1000PX.htm uploads file IO1000PX.htm */ #include "mbed.h" #include "EthernetNetIf.h" #include "HTTPServer.h" #include "lwip/snmp_structs.h" #include "lwip/snmp_msg.h" #include "IO_file.h" #define LPC1768 0x60 // SPI address of LPC1768 module #define READ_IO 0x01 // bit in address field for data reads #define SPI_BYTES 4 // # of data bytes in SPI message #define INV_SPI_CNT 0xfffff // invalid (over-range SPI count #define NUM_READ 8 // # of SPI replies for valid reads #define NUM_INDX 4 // # of SPI replies for valid cmd_buf index #define MAX_CMD 4 // size of CMD buffer #define NO_CMD 0xff // data on cmd_buf[0] when NO_CMD to be sent #define NO_UPDATE 0 // NO change to Ethernet addresses #define UPDATED 0xff // Ethernet addresses updated in file #define NET_ADRS_FILE "/webfs/net_adrs.txt" const char * snmp_fw_version = "1.a"; /* default ethernet address setup */ unsigned char ip_ad[4] = {192,168,99,99}; unsigned char msk_ad[4] = {255,255,255,0}; unsigned char gwy_ad[4] = {192,168,99,253}; unsigned char dns_ad[4] = {192,168,99,253}; unsigned char th_ad[4] = {146,38,105,49}; // v0.99: host address for SNMP traps unsigned char net_addrs_set = false; // flags net address update from SNMP unsigned char net_addrs_chng = NO_UPDATE; // flags net address changed in main CPU unsigned char byte_changed = false; // true if any IO regs have changed unsigned char all_IO_updated = false; // true if all 32 IO regs have been read char hex_mask[12]; // IO mask as hex string unsigned long mask4_IO_registers = 0x3fffffff; // mask for IO regs ignoring IO31 & 32 unsigned long spi_count = 0; // last SPI_COUNT saved in SPI interrupt unsigned char spi_active = true; // avoid false trap message at start static u8_t syslocation[32]; /* v0.9b */ u8_t sysloc_len; SPISlave spi_slave(p11, p12, p13, p14); // mosi, miso, sclk, ssel Ticker comms_tick; Ticker sys_tick; // system tick for SNMP sysuptime report Ticker spi_tick; // tick for monitoring SPI activity Timeout cold_start_delay; DigitalOut led1(LED1, "led1"); // mimics head-head link status o/p in main CPU I/O DigitalOut led2(LED2, "led2"); DigitalOut led3(LED3, "led3"); DigitalOut led4(LED4, "led4"); DigitalOut led_link(p29); // Green link status: ON=good, Blink=Activity DigitalOut led_speed(p30); // Yellow link speed: ON for 100Mb/s unsigned char blink_led = false; unsigned char trap_init = false; // true after cold_start trap sent LocalFileSystem fs( "webfs" ); IpAddr mip, mnm, mgw, mdns; // instantiate from core\ipaddr.cpp //EthernetNetIf eth; // use if DNS sets up address HTTPServer svr; SPI_Server fsvr( "fsvr" ); Serial pc( USBTX, USBRX ); // for diagnostic serial comms to PC via USB /****************************************************************************/ /* SPI interface data and routines */ /****************************************************************************/ /* commands sent to main CPU cpu from cmd_buf[0] and waiting commands stored in higher indices until sent */ unsigned char cmd_buf[ MAX_CMD ]; // store for commands from Ethernet unsigned char new_cmd_idx; /****************************************************************************/ /* SPI_Server: * Description: Instantiates Class to hold & access all data read from RAM by SPI * Called by FSHandler::doGet() in services\http\server\impl * Parameters: name of object instantiated * Returns: NONE */ /****************************************************************************/ SPI_Server::SPI_Server(const char * name) { int idx; for ( idx = 0; idx < MAX_RAM; idx++ ) { ram_img[ idx ] = (MAX_RAM - idx) & 0xff; } reg_offset = 0; } SPI_Server::~SPI_Server() { if(fp) fclose(fp); } /****************************************************************************/ /* update_IO_file: * Description: Reads data from ram_img[] into IO1000PX.htm for web access * Called by FSHandler::doGet() in services\http\server\impl * Globals used: NONE * Parameters: NONE * Returns: 0 if OK, 1 if failed to open files */ /****************************************************************************/ int SPI_Server::update_IO_file() { int c, i; // characters read/written in files unsigned short chnl, dval; // data from 1000PX DBG("\r\nIn SPI_Server::update_IO_file()\r\n"); FILE *fr = fopen("/webfs/hdr.htm", "r"); if(!fr) { fprintf(stderr, "\r\nFile /webfs/hdr.htm could not be opened!\r\n"); exit(1); } else { fp = fopen( "/webfs/IO1000PX.htm", "w" ); if(!fp) { fprintf(stderr, "\r\nFile /webfs/IO1000PX.htm could not be opened to write!\r\n" ); exit(1); } else { while ( (c = fgetc(fr)) != EOF ) { fputc( c, fp ); } fclose(fr); DBG("\r\nIn SPI_Server::update_IO_file() - header copied\r\n"); for ( i = 0; i < 16; i++ ) { chnl = reg_offset + i; dval = 256 * ram_img[ 2*chnl ] + ram_img[ 2*chnl + 1 ]; fprintf(fp, " <TR VALIGN=TOP>\r\n"); fprintf(fp, " <TD WIDTH=124>\r\n"); fprintf(fp, " <P>%02d</P>\r\n", chnl ); fprintf(fp, " </TD>\r\n"); fprintf(fp, " <TD WIDTH=124>\r\n"); fprintf(fp, " <P>%d</P>\r\n", dval ); fprintf(fp, " </TD>\r\n"); fprintf(fp, " <TD WIDTH=124>\r\n"); fprintf(fp, " <P>%02x</P>\r\n", (dval/256) ); fprintf(fp, " </TD>\r\n"); fprintf(fp, " <TD WIDTH=124>\r\n"); fprintf(fp, " <P>%02x</P>\r\n", (dval & 0xff) ); fprintf(fp, " </TD>\r\n"); fprintf(fp, " </TR>\r\n"); } fprintf(fp, "</TABLE>\r\n<P><BR><BR>\r\n</P>\r\n</BODY>\r\n</HTML>\r\n"); } } fclose(fp); // fclose(fr); return 0; } int SPI_Server::read( void ) { DBG("\r\nIn SPI_Server::read()\r\n"); return reg_offset; } void SPI_Server::write( int new_offset ) { DBG("\r\nIn SPI_Server::write()\r\n"); if ( (new_offset >= 0) && (new_offset < MAX_RAM) ) reg_offset = new_offset; } unsigned char SPI_Server::get_byte( unsigned short idx ) { return ram_img[ idx ]; } void SPI_Server::put_byte( unsigned short idx, unsigned char new_byte ) { if ( idx < MAX_RAM ) ram_img[ idx ] = new_byte; } unsigned short SPI_Server::get_error( void ) { // return error register value from main CPU return (256 * ram_img[ 1786 ]) + ram_img[ 1787 ]; } unsigned short SPI_Server::get_SPI_count( void ) { // return SPI write count from main CPU - indicates main CPU running OK return (256 * ram_img[ SPI_COUNT ]) + ram_img[ SPI_COUNT + 1 ]; } unsigned char * SPI_Server::net_address_ptr( void ) { return &ram_img[ NET_IP_ADDRESS ]; } unsigned char * SPI_Server::trap_host_ptr( void ) { return &ram_img[ TRAP_HOST_ADDRESS ]; } #if 0 //#ifdef MBED_RPC trap_host_ptr const struct rpc_method *SPI_Server::get_rpc_methods() { static const rpc_method methods[] = { { "read", rpc_method_caller<int, SPI_Server, &SPI_Server::read> }, { "write", rpc_method_caller<SPI_Server, int, &SPI_Server::write> }, RPC_METHOD_SUPER(Base) //Stream) }; return methods; } struct rpc_class *SPI_Server::get_rpc_class() { static const rpc_function funcs[] = { { "new", rpc_function_caller<const char*, int, &Base::construct<SPI_Server, int> > }, RPC_METHOD_END }; static rpc_class c = { "SPI_Server", funcs, NULL }; return &c; } #endif void check4write_offset( char * req ) { unsigned char l, c, i; char v[ 20 ] = {0}; char s[ 20 ] = {0}; char * p; strcpy( v, "/offset," ); p = strstr( req, v ); strcpy( s, p ); if ( p != NULL ) { i = strlen(v); l = strlen(s); if ( (l > i) && (l < (i + 6)) ) { l -= i; for ( c = 0; c < l; c++ ) { v[ c ] = s[ i + c ]; } v[ c ] = 0; fsvr.write( atoi(v) ); } } } /****************************************************************************/ /* get_SPI_data: * Description: Implements transaction as SPI slave. * Reads 4 data bytes from SPI bus into destbuf for SPI write, or * Puts 1 byte from srcbuf onto SPI for SPI read * Called by main when spi_slave.receive interrupts * LPC1768 SPI slave handles a maximum of 8 bytes per transfer * Globals used: NONE * Parameters: IN/OUT: unsigned char * srcbuf : buffer to read from * Returns: int buf_idx : index to SPI data in destbuf/srcbuf */ /****************************************************************************/ int get_SPI_data( unsigned char * srcbuf ) { static unsigned char rd_cnt; // v0.83: count of times valid data put on bus int buf_idx = 0xffff; // index to save SPI data into destbuf int idx; // index to compare with net address block unsigned char spi_buf[ 8 ]; // temporary buffer for SPI data received unsigned char byte_cnt; // count of SPI data bytes received unsigned char spiv; // SPI value - initial slave address unsigned char bcc = 0; // received block check character unsigned char bcc_ok = false; // default to reject messages without bcc spiv = spi_slave.read(); // Read byte from master if ( (spiv & 0xfe) == (LPC1768 & 0xfe) ) { if ( spiv & READ_IO ) { led4 = 1; led3 = 0; if ( *srcbuf < NO_CMD ) { // new data to be read by main CPU cpu if ( ++rd_cnt >= NUM_READ ) { // v0.83: clear data after 4 reads spi_slave.reply( NO_CMD ); // put invalid data in SPI buffer *srcbuf = NO_CMD; rd_cnt = 0; } else if ( rd_cnt >= NUM_INDX ) { // next put data from srcbuf in SPI buffer spi_slave.reply( *srcbuf ); } else // put new_cmd_idx on SPI bus first { spi_slave.reply( NO_CMD - new_cmd_idx ); // put new_cmd_idx in SPI buffer } } // end if ( *srcbuf < 0xff ) else { rd_cnt = 0; // re-initialise read count spi_slave.reply( NO_CMD ); // put invalid data in SPI buffer } } else // NOT READ_IO - data write { buf_idx = spi_slave.read(); // Read ms index from master bcc ^= buf_idx; // Start checksum calculation buf_idx *= 256; // Make ms index from master buf_idx += spi_slave.read(); // Read ls index from master bcc ^= (buf_idx & 0xff); byte_cnt = 0; while( spi_slave.receive() ) { if( byte_cnt < SPI_BYTES ) { // Read 4 data bytes spi_buf[ byte_cnt ] = spi_slave.read(); bcc ^= spi_buf[ byte_cnt++ ]; } else if ( byte_cnt == SPI_BYTES ) { spiv = spi_slave.read(); bcc_ok = ( bcc == spiv ); } } // end while ( spi_slave.receive() ) if ( bcc_ok && (buf_idx < MAX_RAM) ) { for( byte_cnt = 0; byte_cnt < SPI_BYTES; byte_cnt++ ) { idx = buf_idx + byte_cnt; if ( idx <= MAX_IO_REG_BYTE ) { // check for IO changed from last saved if ( (spi_buf[ byte_cnt ] != fsvr.get_byte( idx )) && !byte_changed ) { if ( mask4_IO_registers & (1 << (idx/2)) ) { // masked-in register has changed byte_changed = true; } } if ( idx == MAX_IO_REG_BYTE ) { // after each I/O scan all_IO_updated = true; spi_count = fsvr.get_SPI_count(); // save last SPI_count value } } else if ( idx == NET_ADDRESS_CHANGE ) { // v0.93: check for net address update from main CPU CPU if ( spi_buf[ byte_cnt ] == NO_UPDATE ) { net_addrs_chng = NO_UPDATE; } else if ( net_addrs_chng != UPDATED ) { net_addrs_chng = spi_buf[ byte_cnt ]; } } fsvr.put_byte( idx, spi_buf[ byte_cnt ] ); // save byte read from SPI } led3 = 0; } else // checksum failed { led3 = 1; } led4 = 0; } // end else not READ_IO } // end if ( (spiv & 0xfe) == (LPC1768 & 0xfe) ) return buf_idx; } /****************************************************************************/ /* chk_SPI_active: * Description: checks spi_count has been updated in SPI interrupt * to be called by timer, independently of SPI interrupt * Globals used: spi_active, spi_count * Parameters: NONE * Returns: NONE */ /****************************************************************************/ void chk_SPI_active( void ) { if ( spi_count == INV_SPI_CNT ) { spi_active = false; // flag SPI failure } else { spi_count = INV_SPI_CNT; // set to be overwritten by next SPI update spi_active = true; // SPI updated OK } } /****************************************************************************/ /* get_hex_mask: * Description: converts long mask4_IO_registers to hexadecimal string * Globals used: mask4_IO_registers, hex_mask * Parameters: NONE * Returns: pointer to hex_mask */ /****************************************************************************/ char * get_hex_mask( void ) { unsigned char i; for ( i = 0; i < 12; i++ ) { hex_mask[ i ] = 0; } sprintf(hex_mask, "%08x", mask4_IO_registers); return hex_mask; } /****************************************************************************/ /* convert2decimal: * Description: converts hexadecimal string to long mask4_IO_registers * Globals used: mask4_IO_registers * Parameters: u8_t * uc_ptr: pointer to hex-formatted mask string * u16_t len: length of string * Returns: NONE */ /****************************************************************************/ void convert2decimal( u8_t * uc_ptr, u16_t len ) { char ch, i; unsigned long temp_sum = 0; for ( i = 0; i < len; i++ ) { ch = (char)*(uc_ptr + i); if ( islower( ch ) ) { ch = ch - 'a' + 10; } else if ( isupper( ch ) ) { ch = ch - 'A' + 10; } else if ( isdigit( ch ) ) { ch = ch - '0'; } else { temp_sum = 0xfffffff; ch = 15; i = len; // end on error; } temp_sum = 16 * temp_sum + ch; } mask4_IO_registers = temp_sum; } void send_ram( void ) { static int idx; char i; if ( (idx & 0x7ff) == 0 ) { pc.printf("CMD data %x", idx ); for ( i = 0; i < MAX_CMD; i++ ) { pc.printf(", %x", cmd_buf[ i ] ); } pc.printf( "\r\n" ); pc.printf("RAM data %x", idx & 0x7ff ); for ( i = 0; i < 8; i++ ) { pc.printf(", %x", fsvr.get_byte(idx++ & 0x7ff) ); } pc.printf( "\r\n" ); } else { pc.printf("RAM data %x", idx & 0x7ff ); for ( i = 0; i < 8; i++ ) { pc.printf(", %x", fsvr.get_byte(idx++ & 0x7ff) ); } pc.printf( "\r\n" ); } } /****************************************************************************/ /* write_addrs_to_file: * Description: Writes net addresses to /webfs/net_adrs.txt * Globals used: NET_ADRS_FILE * Parameters: NONE * Returns: 0 if OK, 1 if failed to open files */ /****************************************************************************/ int write_addrs_to_file() { FILE *fp = fopen( NET_ADRS_FILE, "w" ); if(!fp) { fprintf(stderr, "\r\nFile /webfs/net_adrs.txt could not be opened to write!\r\n"); exit(1); } else // file opened OK, so save addresses { fprintf(fp, "IP address %u.%u.%u.%u \r\n", ip_ad[0],ip_ad[1],ip_ad[2],ip_ad[3]); fprintf(fp, "Address mask %u.%u.%u.%u \r\n", msk_ad[0],msk_ad[1],msk_ad[2],msk_ad[3]); fprintf(fp, "Gwy address %u.%u.%u.%u \r\n", gwy_ad[0],gwy_ad[1],gwy_ad[2],gwy_ad[3]); fprintf(fp, "DNS address %u.%u.%u.%u \r\n", dns_ad[0],dns_ad[1],dns_ad[2],dns_ad[3]); fprintf(fp, "%s\r\n", snmp_publiccommunity ); // v0.98: save community string fprintf(fp, "Trap host address %u.%u.%u.%u \r\n", th_ad[0],th_ad[1],th_ad[2],th_ad[3]); fprintf(fp, "%u \r\n", mask4_IO_registers ); fclose(fp); } // file opened OK return 0; } /****************************************************************************/ /* copy_trap_host_address: v0.99 * Description: Copies src array to th_ad * Globals used: th_ad * net_addrs_chng set to UPDATED * Parameters: IN: unsigned char * src - source array of 4 bytes * Returns: NONE */ /****************************************************************************/ void copy_trap_host_address( unsigned char * src ) { unsigned char i; for ( i = 0; i < 4; i++ ) { if ( src[ i ] != 0 ) { { th_ad[ i ] = src[ i ]; } } } net_addrs_chng = UPDATED; } /****************************************************************************/ /* copy_net_addresses_from: v0.93 * Description: Copies src array to ip_ad, msk_ad, gwy_ad, dns_ad * Globals used: ip_ad, msk_ad, gwy_ad, dns_ad * Parameters: IN: unsigned char * src - source array of 16 bytes * Returns: NONE */ /****************************************************************************/ void copy_net_addresses_from( unsigned char * src ) { unsigned char i; for ( i = 0; i < 4; i++ ) { if ( src[ i ] != 0 ) { ip_ad[ i ] = src[ i ]; } } for ( i = 4; i < 8; i++ ) { if ( src[ i ] != 0 ) { msk_ad[ i-4 ] = src[ i ]; } } for ( i = 8; i < 12; i++ ) { if ( src[ i ] != 0 ) { gwy_ad[ i-8 ] = src[ i ]; } } for ( i = 12; i < 16; i++ ) { if ( src[ i ] != 0 ) { dns_ad[ i-12 ] = src[ i ]; } } } /****************************************************************************/ /* parse4numbers: * Description: Reads file fr and separates out max_num numbers delimited by * any non-digit characters * Globals used: * Parameters: IN: FILE *fr - file to read * OUT: unsigned char * numb - array of numbers read * IN: unsigned char max_num - number of numbers to read * Returns: NONE */ /****************************************************************************/ void parse4numbers( FILE *fr, unsigned char * numb, unsigned char max_num ) { int c, i, new_num; char digit_found = false; char number_completed = false; i = new_num = 0; while ( ((c = fgetc(fr)) != EOF) && (i < max_num) ) { numb[ i ] = 0; if ( c < '0' || c > '9' ) { // not a numeric character if ( digit_found ) { number_completed = true; if ( i >= (max_num - 1) ) { // max_num distinct numbers read break; } } } else // numeric character { digit_found = true; if ( number_completed ) { // save number into array numb[ i++ ] = new_num & 0xff; new_num = 0; } new_num = 10*new_num + c - '0'; number_completed = false; } // else numeric character } // end while if ( (number_completed || (c == EOF)) && (i < max_num) ) { // 0.80: save last number read numb[ i++ ] = new_num & 0xff; } } /****************************************************************************/ /* read_addrs_from_file: * Description: Reads data from /webfs/net_adrs.txt * Globals used: NET_ADRS_FILE * Parameters: NONE * Returns: 0 if OK, 1 if failed to open files */ /****************************************************************************/ int read_addrs_from_file() { int c, i; unsigned char numbers[17]; char community[ MAX_COMMUNITY ]; for ( i = 0; i < MAX_COMMUNITY; i++ ) { community[ i ] = 0; } FILE *fr = fopen( NET_ADRS_FILE, "r" ); if(!fr) { fprintf(stderr, "\r\nFile /webfs/net_adrs.txt could not be opened!\r\n"); exit(1); } else // file opened OK { parse4numbers( fr, numbers, 16 ); copy_net_addresses_from( numbers ); // v0.93: new subroutine /* v0.98: now read the community string from the file after reading end of line */ while ( ((c = fgetc(fr)) != EOF) && ((c == ' ') || (c == '\r') || (c == '\n')) ); i = 0; do { c = (char)c; if ( (c != ' ') && (c != '\r') && (c != '\n') && (i < MAX_COMMUNITY-1) ) { community[ i++ ] = c; } else // string terminated { break; } } while ( ((c = fgetc(fr)) != EOF) && (c != 0) ); parse4numbers( fr, numbers, 4 ); // now read in Trap host address copy_trap_host_address( numbers ); fscanf( fr, "%lu", &mask4_IO_registers ); fclose(fr); } // file opened OK if ( strlen(community) > 3 ) { // string length 4 to 20 characters strcpy( snmp_publiccommunity, community ); pc.printf("community: %s %d \r\n", snmp_publiccommunity, strlen(snmp_publiccommunity) ); } else { pc.printf("community too short: %s %d \r\n", community, strlen(community) ); } return 0; } /****************************************************************************/ /* blinker: * Description: Blinks led_link for 10 calls * Globals used: led_link, blink_led, * Parameters: NONE * Returns: NONE */ /****************************************************************************/ void blinker( void ) { static unsigned char blink_cnt; if ( blink_led && blink_cnt++ < 10 ) { led_link = !led_link; } else { blink_cnt = 0; blink_led = false; } } /****************************************************************************/ /* init_traps: * Description: initialises trap flags and sends cold start trap when done * Globals used: trap_init set true after cold start * Parameters: NONE * Returns: NONE */ /****************************************************************************/ void init_traps( void ) { snmp_coldstart_trap(); trap_init = true; } /****************************************************************************/ /* check_all_traps: * Description: test states for all trap events and sends appropriate trap * Globals used: led2: set to ON if SPI not active * byte_changed, all_IO_updated, spi_active * Parameters: NONE * Returns: NONE */ /****************************************************************************/ void check_all_traps( void ) { if ( !led1 && (fsvr.get_byte( H_H_LINK_LSBYTE ) || fsvr.get_byte( H_H_LINK_MSBYTE )) ) { // change of link state led1 = 1; // flag: link is up when led1 on snmp_linkup_trap(); } else if ( (fsvr.get_byte( H_H_LINK_LSBYTE ) == 0) && (fsvr.get_byte( H_H_LINK_MSBYTE ) == 0) && led1 ) { // change of link state led1 = 0; snmp_linkdown_trap(); } if ( byte_changed && all_IO_updated ) { // any masked-in I/O register changed f3kIOchange_trap(); all_IO_updated = byte_changed = false; } if ( spi_active && led2 ) { led2 = 0; // flag: SPI is up when led2 off snmp_SPIup_trap(); } else if ( !spi_active && !led2 ) { led2 = 1; // flag: SPI is down when led2 on snmp_SPIdown_trap(); } } /****************************************************************************/ /****************************************************************************/ int main() { int idx; new_cmd_idx = 0xaa; for ( idx = 0; idx < MAX_CMD; idx++ ) { // put meaningful non-valid data in cmd_buf cmd_buf[ idx ] = new_cmd_idx; } pc.printf("=================== Version %s ====================\r\n", snmp_fw_version); // pc.printf("Press any key to start...\r\n"); led3 = 1; FSHandler::mount("/webfs", "/files"); //Mount /webfs path on /files web path FSHandler::mount("/webfs", "/"); //Mount /webfs path on web root path read_addrs_from_file(); /* Force fixed Ethernet address */ EthernetNetIf eth( IpAddr( ip_ad[0], ip_ad[1], ip_ad[2], ip_ad[3] ), //IP Address IpAddr( msk_ad[0], msk_ad[1], msk_ad[2], msk_ad[3] ), //Network Mask IpAddr( gwy_ad[0], gwy_ad[1], gwy_ad[2], gwy_ad[3] ), //Gateway IpAddr( dns_ad[0], dns_ad[1], dns_ad[2], dns_ad[3] ) //DNS Server ); Base::add_rpc_class<DigitalOut>(); #if 0 Base::add_rpc_class<SPI_Server>(); #endif // pc.getc(); // wait for keyboard led3 = 0; strcpy( (char *)syslocation, (const char *)syslocation_default ); sysloc_len = strlen( (const char *)syslocation ); snmp_set_syslocation( syslocation, &sysloc_len ); pc.printf("\r\nSetting up...\r\n"); EthernetErr ethErr = eth.setup(); if( ethErr ) { pc.printf("Error %d in Ethernet setup.\r\n", ethErr); // return -1; } else // Ethernet Setup OK { mip = eth.getIp(); led3 = 1; led_speed = LPC_GPIO1->FIOPIN & (1<<26); // GPIO1.26 = "LED_SPEED". led_link = LPC_GPIO1->FIOPIN & (1<<25); // GPIO1.25 = "LED_LINK". pc.printf("\r\nEthernet Setup OK\r\n"); svr.addHandler<RPCHandler>("/rpc"); svr.addHandler<FSHandler>("/files"); svr.addHandler<FSHandler>("/"); //Default handler //Example : Access to mbed.htm : http://a.b.c.d/mbed.htm or http://a.b.c.d/files/mbed.htm // svr.bind(80); disable for SNMP development // snmp_init(); done in lwip/core/init.c pc.printf("Listening...\n\r"); snmp_trap_dst_ip_set( ONLY_TRAP, (ip_addr_t *)&th_ad[0] ); snmp_trap_dst_enable( ONLY_TRAP, ENABLED ); snmp_coldstart_trap(); // to force ARP call led3 = led4 = 0; spi_slave.format(8,3); // Setup: byte data, high steady state clock, 2nd edge capture sys_tick.attach( &snmp_inc_sysuptime, 0.01 ); spi_tick.attach( &chk_SPI_active, 60.0 ); comms_tick.attach( &blinker, 0.07 ); // tick to blink activity LED cold_start_delay.attach( &init_traps, 30.0 ); // send cold_start trap after 30 seconds // Listen indefinitely to Ethernet and SPI while ( true ) { Net::poll(); // check for Ethernet requests if ( trap_init ) { check_all_traps(); } if( spi_slave.receive() ) { // Data available - needs chip select line to activate get_SPI_data( cmd_buf ); } // end if( spi_slave.receive() ) if ( net_addrs_set ) { // v0.99: address changed from SNMP i/f write_addrs_to_file(); net_addrs_set = false; } } // end while ( true ) } // else Ethernet Setup OK return 0; }