Rev 810 | Details | Compare with Previous | Last modification | View Log | SVN | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 810 | noddan | 1 | /** |
| 2 | * CAN Fancontroller. This application is used to control fans via PWM. |
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| 3 | * Might also add some sort of display if the pincount is high enough |
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| 4 | * Or temperature sensors. who knows :o |
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| 5 | * |
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| 6 | * @date 2008-01-10 |
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| 7 | * @author Martin Nordén |
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| 8 | * |
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| 9 | * TODO: Everything. |
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| 10 | */ |
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| 11 | |||
| 12 | |||
| 13 | /*----------------------------------------------------------------------------- |
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| 14 | * Includes |
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| 15 | *---------------------------------------------------------------------------*/ |
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| 16 | /* system files */ |
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| 17 | #include <avr/interrupt.h> |
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| 18 | #include <inttypes.h> |
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| 19 | #include <stdio.h> |
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| 20 | #include <avr/pgmspace.h> //To allow read/write from flash |
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| 21 | |||
| 22 | #include <math.h> |
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| 23 | |||
| 24 | #include <drivers/timer/timebase.h> |
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| 25 | |||
| 26 | #include <config.h> // All configuration parameters |
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| 27 | #include <bios.h> // BIOS interface declarations, including CAN structure and ID defines. |
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| 28 | |||
| 29 | #include <string.h> //for memcpy |
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| 30 | /* lib files */ |
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| 31 | #include <bios.h> |
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| 32 | //#include <funcdefs/funcdefs.h> |
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| 33 | |||
| 34 | //#include <settings.h> |
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| 35 | |||
| 36 | /*---------------------------------------------------------------------------- |
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| 37 | * Defines |
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| 38 | * -------------------------------------------------------------------------*/ |
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| 39 | |||
| 40 | //Working on implementing all of these... |
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| 41 | #define FANCONT_CMD_STATUS 0x00 /* Get status */ |
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| 42 | #define FANCONT_CMD_SETSPEED 0x01 /* Set Fan Speed */ |
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| 43 | #define FANCONT_CMD_SETFREQENCY 0x02 /* Get PWM Frequency */ |
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| 44 | |||
| 45 | |||
| 46 | |||
| 47 | #define APP_TYPE CAN_APPTYPES_FANCONTROLLER |
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| 48 | #define APP_VERSION 0x0001 |
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| 49 | |||
| 50 | #define TRUE 1 |
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| 51 | #define FALSE !TRUE |
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| 52 | |||
| 53 | |||
| 54 | /*----------------------------------------------------------------------------- |
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| 55 | * Global variables |
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| 56 | *---------------------------------------------------------------------------*/ |
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| 57 | uint8_t DutyCycle; //Duty cycle |
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| 58 | uint32_t timeStamp; |
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| 59 | |||
| 60 | Can_Message_t txMsg; //Transmit message storage |
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| 61 | |||
| 62 | volatile Can_Message_t rxMsg; // Message storage |
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| 63 | volatile uint8_t rxMsgFull; // Synchronization flag |
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| 64 | |||
| 65 | /*---------------------------------------------------------------------------- |
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| 66 | * Functions |
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| 67 | * -------------------------------------------------------------------------*/ |
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| 68 | |||
| 69 | /* Takes care of incoming messages and parses them if this node is adressed */ |
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| 70 | void can_receive(Can_Message_t *msg) |
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| 71 | { // CAN callback function |
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| 72 | if (!rxMsgFull) { |
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| 73 | memcpy((void*)&rxMsg, msg, sizeof(rxMsg)); |
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| 74 | rxMsgFull = 1; |
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| 75 | } |
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| 76 | } |
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| 77 | |||
| 78 | |||
| 79 | /*----------------------------------------------------------------------------- |
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| 80 | * Main Program |
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| 81 | *---------------------------------------------------------------------------*/ |
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| 82 | int main(void) { |
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| 83 | |||
| 84 | //Setting up OC1A, 16 bit counter used as 8 bit. |
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| 85 | TCCR1A |= (1<<COM1A1) | (1<<WGM11); /* Set OC1A at TOP, mode 14 */ |
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| 86 | TCCR1B |= (1<<WGM13) | (1<<WGM12) | (1<<CS12) | (0<<CS11)| (1<<CS10); /* Timer uses main system clock with ? prescale */ |
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| 87 | ICR1 = 256; //8 bit precision to match the other two counters. |
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| 88 | OCR1A = 0; //0% as standard |
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| 89 | DDRB |= (1<<PB1); /* Enable pin as output */ |
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| 90 | //Setting up OC0A |
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| 91 | TCCR0A |= (1<<COM0A1)|(1<<WGM01)|(1<<WGM00); /* Set OC0A at TOP, Mode 7 */ |
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| 92 | TCCR0B |= (1<<CS01)| (1<<CS00); /* Prescaler updating now */ |
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| 93 | OCR0A = 0; //0% standard |
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| 94 | DDRD |= (1<<PD6); |
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| 95 | //Setting up OC0B |
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| 96 | TCCR0A |= (1<<COM0B1); |
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| 97 | OCR0B = 0; |
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| 98 | DDRD |= (1<<PD5); |
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| 99 | |||
| 100 | //Initialize variables |
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| 101 | timeStamp = Timebase_CurrentTime(); |
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| 102 | sei(); |
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| 103 | |||
| 104 | BIOS_CanCallback = &can_receive; |
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| 105 | |||
| 106 | |||
| 107 | //Send a message that we are alive! |
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| 108 | txMsg.Id = (CAN_NMT_APP_START << CAN_SHIFT_NMT_TYPE) | (NODE_ID << CAN_SHIFT_NMT_SID); |
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| 109 | txMsg.DataLength = 4; |
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| 110 | txMsg.RemoteFlag = 0; |
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| 111 | txMsg.ExtendedFlag = 1; |
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| 112 | txMsg.Data.words[0] = APP_TYPE; |
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| 113 | txMsg.Data.words[1] = APP_VERSION; |
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| 114 | BIOS_CanSend(&txMsg); |
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| 115 | |||
| 116 | //Lets get timebase up and running |
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| 117 | Timebase_Init(); |
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| 118 | |||
| 119 | |||
| 120 | /* main loop */ |
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| 121 | while (1) { |
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| 122 | |||
| 123 | /* Time to fade color? */ |
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| 124 | if ((Timebase_CurrentTime() - timeStamp) >= 100) { |
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| 125 | //OCR1A++; |
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| 126 | //if (OCR1A>150) OCR1A = 50; |
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| 127 | timeStamp = Timebase_CurrentTime(); |
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| 128 | } |
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| 129 | |||
| 130 | |||
| 131 | /* Check if any messages has been recieved */ |
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| 132 | if (rxMsgFull) { |
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| 133 | uint16_t acttype; |
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| 134 | uint8_t fancontid; |
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| 135 | |||
| 136 | if ( ((rxMsg.Id & CAN_MASK_CLASS)>>CAN_SHIFT_CLASS) == CAN_ACT){ |
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| 137 | // Actuator package |
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| 138 | acttype =(uint16_t)((rxMsg.Id & CAN_MASK_ACT_TYPE) >> CAN_SHIFT_ACT_TYPE); |
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| 139 | fancontid = (uint8_t)((rxMsg.Id & CAN_MASK_ACT_ID) >> CAN_SHIFT_ACT_ID); |
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| 140 | |||
| 141 | if ((acttype == ACT_TYPE_FAN) && (fancontid == 1)) { |
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| 142 | // This is a message for this fancontroller |
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| 143 | |||
| 144 | |||
| 145 | if( rxMsg.Data.bytes[0] == FANCONT_CMD_SETSPEED ){ |
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| 146 | /* Set duty cycle */ |
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| 147 | OCR1A = rxMsg.Data.bytes[1]; |
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| 148 | } |
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| 149 | |||
| 150 | |||
| 151 | } |
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| 152 | } |
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| 153 | rxMsgFull = 0; // |
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| 154 | rxMsgFull = 0; // |
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| 155 | |||
| 156 | } |
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| 157 | /* Done checking incoming packages */ |
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| 158 | |||
| 159 | } |
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| 160 | |||
| 161 | return 0; |
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| 162 | } |