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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 205 | arune | 1 | /** |
| 2 | * CAN Test. This program sends a CAN message once every second. The ID of the |
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| 3 | * message is increased each time for testing purposes. |
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| 4 | * |
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| 5 | * @date 2006-11-21 |
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| 6 | * @author Jimmy Myhrman |
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| 7 | * |
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| 8 | */ |
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| 9 | |||
| 10 | /*----------------------------------------------------------------------------- |
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| 11 | * Includes |
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| 12 | *---------------------------------------------------------------------------*/ |
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| 13 | /* system files */ |
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| 14 | #include <avr/io.h> |
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| 15 | #include <avr/interrupt.h> |
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| 16 | #include <avr/wdt.h> |
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| 17 | #include <stdio.h> |
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| 18 | /* lib files */ |
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| 19 | #include <can.h> |
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| 20 | //#include <serial.h> |
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| 21 | #include <timebase.h> |
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| 22 | #include <ip_arp_udp_tcp.h> |
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| 23 | #include <enc28j60.h> |
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| 24 | #include <timeout.h> |
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| 25 | #include <avr_compat.h> |
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| 26 | #include <net.h> |
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| 27 | |||
| 28 | // please modify the following two lines. mac and ip have to be unique |
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| 29 | // in your local area network. You can not have the same numbers in |
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| 30 | // two devices: |
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| 31 | static uint8_t mymac[6] = {0x54,0x55,0x58,0x10,0x00,0x24}; |
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| 32 | static uint8_t myip[4] = {193,11,254,22}; |
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| 33 | static uint16_t remoteport =1200; // listen port for udp |
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| 34 | static uint8_t gotserver = 0; |
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| 35 | |||
| 36 | // how did I get the mac addr? Translate the first 3 numbers into ascii is: TUX |
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| 37 | |||
| 38 | static uint8_t remotemac[6]; |
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| 39 | static uint8_t remoteip[4]; |
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| 40 | |||
| 41 | #define BUFFER_SIZE 250 |
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| 42 | static uint8_t buf[BUFFER_SIZE+1]; |
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| 43 | static uint8_t replybuf[BUFFER_SIZE+1]; |
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| 44 | |||
| 45 | int udp_putchar(char c, FILE* stream) { |
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| 46 | if (gotserver != 0) { |
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| 47 | uint8_t i=0; |
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| 48 | while(i<BUFFER_SIZE+1){ |
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| 49 | buf[i]=replybuf[i]; |
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| 50 | i++; |
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| 51 | } |
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| 52 | //send_udp(replybuf, &c, 1, remoteport, remotemac, remoteip); |
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| 53 | make_udp_reply_from_request(buf, "hello", 5, remoteport); |
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| 54 | //send_udp(buf, &c, 1, remoteport, remotemac, remoteip); |
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| 55 | } |
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| 56 | return 0; |
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| 57 | } |
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| 58 | |||
| 59 | static FILE mystdout = FDEV_SETUP_STREAM(udp_putchar, NULL, _FDEV_SETUP_WRITE); |
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| 60 | |||
| 61 | /*----------------------------------------------------------------------------- |
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| 62 | * Main Program |
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| 63 | *---------------------------------------------------------------------------*/ |
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| 64 | int main(void) { |
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| 65 | |||
| 66 | //ethernet vars |
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| 67 | uint16_t plen = 0; |
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| 68 | uint8_t ledi=0; |
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| 69 | uint8_t payloadlen=0; |
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| 70 | |||
| 71 | uint32_t timeStamp = 0; |
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| 72 | |||
| 73 | //can vars |
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| 74 | Can_Message_t txMsg; |
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| 75 | Can_Message_t rxMsg; |
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| 76 | txMsg.Id = 3; |
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| 77 | txMsg.DataLength = 0; |
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| 78 | txMsg.RemoteFlag = 0; |
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| 79 | txMsg.ExtendedFlag = 1; //DataLength and the databytes are just what happens to be in the memory. They are never set. |
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| 80 | |||
| 81 | Timebase_Init(); |
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| 82 | // Serial_Init(); |
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| 83 | #if defined(__AVR_ATmega88__) |
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| 84 | // set the clock speed to 8MHz |
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| 85 | // set the clock prescaler. First write CLKPCE to enable setting of clock the |
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| 86 | // next four instructions. |
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| 87 | CLKPR=(1<<CLKPCE); |
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| 88 | CLKPR=0; // 8 MHZ |
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| 89 | #endif |
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| 90 | |||
| 91 | //stdout = &mystdout; //set the output stream |
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| 92 | |||
| 93 | sei(); |
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| 94 | |||
| 95 | // printf("CanInit..."); |
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| 96 | if (Can_Init() != CAN_OK) { |
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| 97 | // printf("FAILED!\n"); |
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| 98 | } |
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| 99 | else { |
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| 100 | // printf("OK!\n"); |
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| 101 | } |
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| 102 | |||
| 103 | /* enable PB0, reset as output */ |
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| 104 | DDRB|= (1<<DDB0); |
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| 105 | /* set output to gnd, reset the ethernet chip */ |
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| 106 | PORTB &= ~(1<<PB0); |
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| 107 | delay_ms(20); |
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| 108 | /* set output to Vcc, reset inactive */ |
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| 109 | PORTB|= (1<<PB0); |
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| 110 | delay_ms(100); |
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| 111 | |||
| 112 | // LED |
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| 113 | /* enable PB1, LED as output */ |
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| 114 | DDRD|= (1<<DDD6); |
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| 115 | /* set output to Vcc, LED off */ |
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| 116 | PORTD|= (1<<PD6); |
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| 117 | |||
| 118 | /*initialize enc28j60*/ |
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| 119 | enc28j60Init(mymac); |
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| 120 | delay_ms(20); |
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| 121 | |||
| 122 | /* Magjack leds configuration, see enc28j60 datasheet, page 11 */ |
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| 123 | // LEDB=yellow LEDA=green |
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| 124 | // |
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| 125 | // 0x476 is PHLCON LEDA=links status, LEDB=receive/transmit |
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| 126 | // enc28j60PhyWrite(PHLCON,0b0000 0100 0111 01 10); |
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| 127 | enc28j60PhyWrite(PHLCON,0x476); |
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| 128 | delay_ms(20); |
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| 129 | |||
| 130 | /* set output to GND, red LED on */ |
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| 131 | PORTD &= ~(1<<PD6); |
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| 132 | ledi=1; |
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| 133 | |||
| 134 | //init the ethernet/ip layer: |
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| 135 | init_ip_arp_udp_tcp(mymac,myip,80); |
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| 136 | |||
| 137 | /* main loop */ |
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| 138 | while (1) { |
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| 139 | /* service the CAN routines */ |
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| 140 | Can_Service(); |
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| 141 | |||
| 142 | //PORTD &= ~(1<<PD6); |
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| 143 | |||
| 144 | /* send CAN message and check for CAN errors once every second */ |
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| 145 | if (Timebase_PassedTimeMillis(timeStamp) >= 2000) { |
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| 146 | timeStamp = Timebase_CurrentTime(); |
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| 147 | /* send txMsg */ |
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| 148 | //txMsg.Id++; |
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| 149 | txMsg.Id = 3; |
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| 150 | Can_Send(&txMsg); |
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| 151 | if (ledi){ |
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| 152 | /* set output to Vcc, LED off */ |
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| 153 | PORTD|= (1<<PD6); |
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| 154 | ledi=0; |
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| 155 | }else{ |
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| 156 | /* set output to GND, LED on */ |
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| 157 | PORTD &= ~(1<<PD6); |
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| 158 | ledi=1; |
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| 159 | } |
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| 160 | |||
| 161 | } |
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| 162 | |||
| 163 | /* check if any messages have been received */ |
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| 164 | while (Can_Receive(&rxMsg) == CAN_OK) { |
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| 165 | //printf("MSG Received: ID=%lx, DLC=%u, EXT=%u, RTR=%u, ", rxMsg.Id, (uint16_t)(rxMsg.DataLength), (uint16_t)(rxMsg.ExtendedFlag), (uint16_t)(rxMsg.RemoteFlag)); |
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| 166 | /*printf("data={ "); |
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| 167 | for (uint8_t i=0; i<rxMsg.DataLength; i++) { |
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| 168 | printf("%x ", rxMsg.Data.bytes[i]); |
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| 169 | } |
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| 170 | printf("}\n"); |
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| 171 | */ |
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| 172 | if (gotserver != 0) { |
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| 173 | uint8_t i = 0; |
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| 174 | while(i<BUFFER_SIZE+1){ |
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| 175 | buf[i]=replybuf[i]; |
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| 176 | i++; |
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| 177 | } |
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| 178 | send_udp(buf, "hello", 6, remoteport, remotemac, remoteip); |
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| 179 | //make_udp_reply_from_request(buf, "hello", 5, remoteport); |
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| 180 | i = 0; |
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| 181 | while(i<BUFFER_SIZE+1){ |
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| 182 | buf[i]=replybuf[i]; |
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| 183 | i++; |
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| 184 | } |
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| 185 | //make_udp_reply_from_request(buf, "world", 5, remoteport); |
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| 186 | send_udp(buf, "world", 6, remoteport, remotemac, remoteip); |
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| 187 | } |
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| 188 | //printf("Hello world! %i \n", txMsg.Id); |
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| 189 | } |
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| 190 | |||
| 191 | // get the next new packet: |
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| 192 | plen = enc28j60PacketReceive(BUFFER_SIZE, buf); |
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| 193 | |||
| 194 | /*plen will ne unequal to zero if there is a valid |
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| 195 | * packet (without crc error) */ |
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| 196 | if(plen!=0){ |
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| 197 | // arp is broadcast if unknown but a host may also |
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| 198 | // verify the mac address by sending it to |
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| 199 | // a unicast address. |
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| 200 | if(eth_type_is_arp_and_my_ip(buf,plen)){ |
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| 201 | make_arp_answer_from_request(buf); |
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| 202 | } else { |
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| 203 | // check if ip packets (icmp or udp) are for us: |
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| 204 | if(eth_type_is_ip_and_my_ip(buf,plen)!=0){ |
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| 205 | //if (ledi){ |
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| 206 | /* set output to Vcc, LED off */ |
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| 207 | // PORTD|= (1<<PD6); |
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| 208 | // ledi=0; |
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| 209 | //}else{ |
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| 210 | /* set output to GND, LED on */ |
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| 211 | // PORTD &= ~(1<<PD6); |
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| 212 | // ledi=1; |
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| 213 | //} |
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| 214 | |||
| 215 | if(buf[IP_PROTO_P]==IP_PROTO_ICMP_V && buf[ICMP_TYPE_P]==ICMP_TYPE_ECHOREQUEST_V){ |
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| 216 | // a ping packet, let's send pong |
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| 217 | make_echo_reply_from_request(buf,plen); |
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| 218 | txMsg.Id = 6; |
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| 219 | Can_Send(&txMsg); |
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| 220 | |||
| 221 | } |
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| 222 | if (buf[IP_PROTO_P]==IP_PROTO_UDP_V){ |
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| 223 | payloadlen=buf[UDP_LEN_L_P]-UDP_HEADER_LEN; |
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| 224 | if (buf[UDP_DATA_P]=='t' && payloadlen==5){ |
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| 225 | uint8_t i=0; |
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| 226 | |||
| 227 | while(i<6){ |
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| 228 | remotemac[i]=buf[ETH_SRC_MAC +i]; |
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| 229 | i++; |
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| 230 | } |
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| 231 | i=0; |
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| 232 | while(i<4){ |
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| 233 | remoteip[i]=buf[IP_SRC_P +i]; |
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| 234 | i++; |
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| 235 | } |
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| 236 | i=0; |
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| 237 | while(i<BUFFER_SIZE+1){ |
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| 238 | replybuf[i]=buf[i]; |
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| 239 | i++; |
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| 240 | } |
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| 241 | |||
| 242 | gotserver = 1; |
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| 243 | make_udp_reply_from_request(buf,"Got server",10,remoteport); |
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| 244 | } |
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| 245 | } |
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| 246 | } |
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| 247 | } |
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| 248 | } |
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| 249 | |||
| 250 | |||
| 251 | |||
| 252 | |||
| 253 | } |
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| 254 | |||
| 255 | return 0; |
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| 256 | } |