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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | ingob | 1 | /*############################################################################ |
| 2 | ############################################################################*/ |
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| 3 | |||
| 4 | #include "main.h" |
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| 5 | |||
| 918 | hbuss | 6 | volatile unsigned char twi_state = 0; |
| 1639 | holgerb | 7 | unsigned char motor = 0,TransmitBlConfig = 0; |
| 1210 | hbuss | 8 | unsigned char motorread = 0,MissingMotor = 0; |
| 1479 | killagreg | 9 | |
| 10 | MotorData_t Motor[MAX_MOTORS]; |
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| 11 | |||
| 1322 | hbuss | 12 | unsigned int I2CError = 0; |
| 1 | ingob | 13 | |
| 14 | //############################################################################ |
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| 15 | //Initzialisieren der I2C (TWI) Schnittstelle |
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| 16 | void i2c_init(void) |
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| 17 | //############################################################################ |
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| 18 | { |
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| 19 | TWSR = 0; |
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| 1479 | killagreg | 20 | TWBR = ((SYSCLK/SCL_CLOCK)-16)/2; |
| 1 | ingob | 21 | } |
| 22 | |||
| 173 | holgerb | 23 | void i2c_reset(void) |
| 1 | ingob | 24 | //############################################################################ |
| 173 | holgerb | 25 | { |
| 1639 | holgerb | 26 | I2C_Stop(); |
| 173 | holgerb | 27 | twi_state = 0; |
| 28 | motor = TWDR; |
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| 29 | motor = 0; |
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| 30 | TWCR = 0x80; |
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| 31 | TWAMR = 0; |
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| 32 | TWAR = 0; |
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| 33 | TWDR = 0; |
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| 34 | TWSR = 0; |
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| 35 | TWBR = 0; |
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| 36 | i2c_init(); |
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| 1639 | holgerb | 37 | I2C_Start(); |
| 173 | holgerb | 38 | i2c_write_byte(0); |
| 39 | } |
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| 1639 | holgerb | 40 | /* |
| 173 | holgerb | 41 | //############################################################################ |
| 1209 | hbuss | 42 | void i2c_write_byte(char byte) |
| 1 | ingob | 43 | //############################################################################ |
| 1479 | killagreg | 44 | { |
| 1 | ingob | 45 | TWSR = 0x00; |
| 46 | TWDR = byte; |
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| 47 | TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWIE); |
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| 48 | } |
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| 1639 | holgerb | 49 | */ |
| 1 | ingob | 50 | |
| 1639 | holgerb | 51 | /* |
| 1209 | hbuss | 52 | void I2C_WriteByte(int8_t byte) |
| 53 | { |
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| 54 | // move byte to send into TWI Data Register |
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| 55 | TWDR = byte; |
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| 56 | // clear interrupt flag (TWINT = 1) |
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| 57 | // enable i2c bus (TWEN = 1) |
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| 58 | // enable interrupt (TWIE = 1) |
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| 59 | TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWIE); |
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| 60 | } |
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| 1639 | holgerb | 61 | */ |
| 1209 | hbuss | 62 | |
| 1638 | holgerb | 63 | /* |
| 1 | ingob | 64 | //############################################################################ |
| 65 | SIGNAL (TWI_vect) |
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| 66 | //############################################################################ |
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| 67 | { |
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| 1211 | hbuss | 68 | static unsigned char missing_motor; |
| 1210 | hbuss | 69 | switch(twi_state++) |
| 1 | ingob | 70 | { |
| 1210 | hbuss | 71 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 72 | // Writing the Data |
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| 73 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 1 | ingob | 74 | case 0: |
| 1210 | hbuss | 75 | while(Mixer.Motor[motor][0] <= 0 && motor < MAX_MOTORS) motor++; // skip if not used |
| 1479 | killagreg | 76 | if(motor == MAX_MOTORS) // writing finished -> now read |
| 77 | { |
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| 78 | motor = 0; |
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| 79 | twi_state = 3; |
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| 1210 | hbuss | 80 | i2c_write_byte(0x53+(motorread*2)); |
| 1479 | killagreg | 81 | } |
| 1209 | hbuss | 82 | else i2c_write_byte(0x52+(motor*2)); |
| 1 | ingob | 83 | break; |
| 84 | case 1: |
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| 1479 | killagreg | 85 | i2c_write_byte(Motor[motor++].SetPoint); |
| 1111 | hbuss | 86 | break; |
| 87 | case 2: |
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| 1479 | killagreg | 88 | if(TWSR == 0x30) |
| 89 | { |
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| 90 | if(!missing_motor) missing_motor = motor; |
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| 91 | if((Motor[motor-1].State & MOTOR_STATE_ERROR_MASK) < MOTOR_STATE_ERROR_MASK) Motor[motor-1].State++; // increment error counter and handle overflow |
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| 1322 | hbuss | 92 | } |
| 1639 | holgerb | 93 | I2C_Stop(); |
| 1210 | hbuss | 94 | I2CTimeout = 10; |
| 1209 | hbuss | 95 | twi_state = 0; |
| 1639 | holgerb | 96 | I2C_Start(); |
| 1479 | killagreg | 97 | break; |
| 1210 | hbuss | 98 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 99 | // Reading Data |
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| 100 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 1111 | hbuss | 101 | case 3: |
| 1211 | hbuss | 102 | //Transmit 1st byte for reading |
| 1210 | hbuss | 103 | if(TWSR != 0x40) // Error? |
| 1479 | killagreg | 104 | { |
| 105 | Motor[motorread].State &= ~MOTOR_STATE_PRESENT_MASK; // clear present bit |
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| 106 | motorread++; |
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| 1211 | hbuss | 107 | if(motorread >= MAX_MOTORS) motorread = 0; |
| 1639 | holgerb | 108 | I2C_Stop(); |
| 1210 | hbuss | 109 | twi_state = 0; |
| 110 | } |
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| 1479 | killagreg | 111 | else |
| 1211 | hbuss | 112 | { |
| 1479 | killagreg | 113 | Motor[motorread].State |= MOTOR_STATE_PRESENT_MASK; // set present bit |
| 1211 | hbuss | 114 | I2C_ReceiveByte(); |
| 115 | } |
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| 1210 | hbuss | 116 | MissingMotor = missing_motor; |
| 1211 | hbuss | 117 | missing_motor = 0; |
| 1111 | hbuss | 118 | break; |
| 1210 | hbuss | 119 | case 4: //Read 1st byte and transmit 2nd Byte |
| 1479 | killagreg | 120 | Motor[motorread].Current = TWDR; |
| 1209 | hbuss | 121 | I2C_ReceiveLastByte(); //nack |
| 122 | break; |
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| 1210 | hbuss | 123 | case 5: |
| 1209 | hbuss | 124 | //Read 2nd byte |
| 1479 | killagreg | 125 | Motor[motorread].MaxPWM = TWDR; |
| 126 | motorread++; // next motor |
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| 1211 | hbuss | 127 | if(motorread >= MAX_MOTORS) motorread = 0; |
| 1639 | holgerb | 128 | I2C_Stop(); |
| 1209 | hbuss | 129 | twi_state = 0; |
| 1111 | hbuss | 130 | break; |
| 1479 | killagreg | 131 | |
| 1210 | hbuss | 132 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 133 | // writing Gyro-Offset |
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| 134 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 1479 | killagreg | 135 | case 8: |
| 1111 | hbuss | 136 | i2c_write_byte(0x98); // Address of the DAC |
| 137 | break; |
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| 1479 | killagreg | 138 | case 9: |
| 1111 | hbuss | 139 | i2c_write_byte(0x10); // Update Channel A |
| 140 | break; |
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| 1479 | killagreg | 141 | case 10: |
| 1111 | hbuss | 142 | i2c_write_byte(AnalogOffsetNick); // Value |
| 143 | break; |
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| 1479 | killagreg | 144 | case 11: |
| 1111 | hbuss | 145 | i2c_write_byte(0x80); // Value |
| 146 | break; |
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| 1479 | killagreg | 147 | case 12: |
| 1639 | holgerb | 148 | I2C_Stop(); |
| 1111 | hbuss | 149 | I2CTimeout = 10; |
| 1639 | holgerb | 150 | I2C_Start(); |
| 1111 | hbuss | 151 | break; |
| 1479 | killagreg | 152 | case 13: |
| 1111 | hbuss | 153 | i2c_write_byte(0x98); // Address of the DAC |
| 154 | break; |
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| 1479 | killagreg | 155 | case 14: |
| 1111 | hbuss | 156 | i2c_write_byte(0x12); // Update Channel B |
| 157 | break; |
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| 1479 | killagreg | 158 | case 15: |
| 1111 | hbuss | 159 | i2c_write_byte(AnalogOffsetRoll); // Value |
| 160 | break; |
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| 1479 | killagreg | 161 | case 16: |
| 1111 | hbuss | 162 | i2c_write_byte(0x80); // Value |
| 163 | break; |
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| 1479 | killagreg | 164 | case 17: |
| 1639 | holgerb | 165 | I2C_Stop(); |
| 1111 | hbuss | 166 | I2CTimeout = 10; |
| 1639 | holgerb | 167 | I2C_Start(); |
| 1111 | hbuss | 168 | break; |
| 1479 | killagreg | 169 | case 18: |
| 1111 | hbuss | 170 | i2c_write_byte(0x98); // Address of the DAC |
| 171 | break; |
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| 1479 | killagreg | 172 | case 19: |
| 1111 | hbuss | 173 | i2c_write_byte(0x14); // Update Channel C |
| 174 | break; |
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| 1479 | killagreg | 175 | case 20: |
| 1111 | hbuss | 176 | i2c_write_byte(AnalogOffsetGier); // Value |
| 177 | break; |
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| 1479 | killagreg | 178 | case 21: |
| 1111 | hbuss | 179 | i2c_write_byte(0x80); // Value |
| 180 | break; |
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| 1479 | killagreg | 181 | case 22: |
| 1639 | holgerb | 182 | I2C_Stop(); |
| 1111 | hbuss | 183 | I2CTimeout = 10; |
| 184 | twi_state = 0; |
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| 185 | break; |
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| 1209 | hbuss | 186 | default: twi_state = 0; |
| 1479 | killagreg | 187 | break; |
| 1209 | hbuss | 188 | } |
| 1111 | hbuss | 189 | TWCR |= 0x80; |
| 190 | } |
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| 1638 | holgerb | 191 | */ |
| 192 | |||
| 193 | /* |
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| 194 | if(DataArray[3] & 0x01) Parameter.PwmScaling = DataArray[4]; |
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| 195 | if(DataArray[3] & 0x02) Parameter.MaxStrom = DataArray[5]; |
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| 196 | if(DataArray[3] & 0x04) Parameter.TemperaturLimiter = DataArray[6]; |
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| 197 | if(DataArray[3] & 0x08) Parameter.SkaliereStrom = DataArray[7]; |
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| 198 | if(DataArray[3] & 0x10) Parameter.Bitconfig = DataArray[8]; |
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| 199 | */ |
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| 200 | |||
| 201 | //############################################################################ |
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| 202 | SIGNAL (TWI_vect) |
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| 203 | //############################################################################ |
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| 204 | { // 2 3 4 5 6 7 8 9 |
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| 205 | unsigned char test[] = {0,0,'#',0x1F,255,30,100,64,0x00,7,8,9,10}; |
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| 1639 | holgerb | 206 | static unsigned char missing_motor,send = 0,crc = 0, read_temperature = 0; |
| 207 | |||
| 1638 | holgerb | 208 | switch(twi_state++) |
| 209 | { |
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| 210 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 211 | // Writing the Data |
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| 212 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 213 | case 0: |
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| 214 | while(Mixer.Motor[motor][0] <= 0 && motor < MAX_MOTORS) motor++; // skip if not used |
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| 215 | if(motor == MAX_MOTORS) // writing finished -> now read |
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| 216 | { |
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| 217 | motor = 0; |
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| 218 | twi_state = 4; |
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| 219 | i2c_write_byte(0x53+(motorread*2)); |
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| 220 | } |
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| 221 | else i2c_write_byte(0x52+(motor*2)); |
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| 222 | send = 0; |
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| 223 | break; |
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| 224 | case 1: |
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| 225 | i2c_write_byte(Motor[motor].SetPoint); |
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| 1639 | holgerb | 226 | if(!(Motor[motor].Version & MOTOR_STATE_NEW_PROTOCOL_MASK)/* || !Motor[motor].SetPointLowerBits*/) |
| 227 | twi_state++; |
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| 1638 | holgerb | 228 | break; |
| 229 | case 2: |
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| 230 | if(!send++) |
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| 231 | { |
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| 232 | i2c_write_byte((Motor[motor].SetPointLowerBits << 1));// + (7 << 0)); |
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| 233 | crc = 0xAA; |
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| 234 | } |
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| 235 | else |
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| 1639 | holgerb | 236 | if(send == 9) i2c_write_byte(crc) |
| 1638 | holgerb | 237 | else |
| 238 | { |
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| 239 | crc += test[send]; |
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| 240 | i2c_write_byte(test[send]); |
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| 241 | } |
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| 1639 | holgerb | 242 | if(TransmitBlConfig && !MotorenEin && motor == motorread && (Motor[motorread].Version & MOTOR_STATE_NEW_PROTOCOL_MASK)) |
| 243 | { |
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| 244 | if(send <= 10) twi_state--; |
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| 245 | } |
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| 246 | |||
| 1638 | holgerb | 247 | break; |
| 248 | case 3: |
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| 249 | motor++; |
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| 250 | if(TWSR == 0x30) |
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| 251 | { |
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| 252 | if(!missing_motor) missing_motor = motor; |
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| 253 | if((Motor[motor-1].State & MOTOR_STATE_ERROR_MASK) < MOTOR_STATE_ERROR_MASK) Motor[motor-1].State++; // increment error counter and handle overflow |
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| 254 | } |
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| 1639 | holgerb | 255 | I2C_Stop(); |
| 1638 | holgerb | 256 | I2CTimeout = 10; |
| 257 | twi_state = 0; |
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| 1639 | holgerb | 258 | I2C_Start(); |
| 1638 | holgerb | 259 | break; |
| 260 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 261 | // Reading Data |
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| 262 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 263 | case 4: |
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| 264 | //Transmit 1st byte for reading |
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| 265 | if(TWSR != 0x40) // Error? |
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| 266 | { |
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| 267 | Motor[motorread].State &= ~MOTOR_STATE_PRESENT_MASK; // clear present bit |
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| 268 | motorread++; |
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| 1639 | holgerb | 269 | if(motorread >= MAX_MOTORS) { TransmitBlConfig = 0; motorread = 0; } |
| 270 | I2C_Stop(); |
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| 1638 | holgerb | 271 | twi_state = 0; |
| 272 | } |
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| 273 | else |
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| 274 | { |
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| 275 | Motor[motorread].State |= MOTOR_STATE_PRESENT_MASK; // set present bit |
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| 276 | I2C_ReceiveByte(); |
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| 277 | } |
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| 278 | MissingMotor = missing_motor; |
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| 279 | missing_motor = 0; |
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| 280 | break; |
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| 281 | case 5: //Read 1st byte and transmit 2nd Byte |
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| 282 | Motor[motorread].Current = TWDR; |
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| 283 | I2C_ReceiveByte(); //nack |
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| 284 | break; |
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| 285 | case 6: |
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| 286 | //Read 2nd byte and transmit 3rd Byte |
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| 287 | Motor[motorread].MaxPWM = TWDR; |
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| 288 | if(TWDR == 250) |
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| 289 | { |
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| 290 | Motor[motorread].Version |= MOTOR_STATE_NEW_PROTOCOL_MASK; |
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| 291 | } |
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| 1639 | holgerb | 292 | else if(TransmitBlConfig) Motor[motorread].Version = 0; |
| 1638 | holgerb | 293 | I2C_ReceiveLastByte(); //nack |
| 294 | break; |
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| 295 | case 7: // read next |
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| 296 | Motor[motorread].Temperature = TWDR; |
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| 297 | motorread++; // next motor |
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| 1639 | holgerb | 298 | if(motorread >= MAX_MOTORS) { TransmitBlConfig = 0; motorread = 0; } |
| 299 | I2C_Stop(); |
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| 1638 | holgerb | 300 | twi_state = 0; |
| 301 | break; |
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| 302 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 303 | // writing Gyro-Offset |
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| 304 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 305 | case 18: |
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| 306 | i2c_write_byte(0x98); // Address of the DAC |
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| 307 | break; |
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| 308 | case 19: |
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| 309 | i2c_write_byte(0x10); // Update Channel A |
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| 310 | break; |
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| 311 | case 20: |
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| 312 | i2c_write_byte(AnalogOffsetNick); // Value |
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| 313 | break; |
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| 314 | case 21: |
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| 315 | i2c_write_byte(0x80); // Value |
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| 316 | break; |
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| 317 | case 22: |
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| 1639 | holgerb | 318 | I2C_Stop(); |
| 1638 | holgerb | 319 | I2CTimeout = 10; |
| 1639 | holgerb | 320 | I2C_Start(); |
| 1638 | holgerb | 321 | break; |
| 322 | case 23: |
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| 323 | i2c_write_byte(0x98); // Address of the DAC |
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| 324 | break; |
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| 325 | case 24: |
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| 326 | i2c_write_byte(0x12); // Update Channel B |
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| 327 | break; |
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| 328 | case 25: |
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| 329 | i2c_write_byte(AnalogOffsetRoll); // Value |
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| 330 | break; |
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| 331 | case 26: |
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| 332 | i2c_write_byte(0x80); // Value |
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| 333 | break; |
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| 334 | case 27: |
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| 1639 | holgerb | 335 | I2C_Stop(); |
| 1638 | holgerb | 336 | I2CTimeout = 10; |
| 1639 | holgerb | 337 | I2C_Start(); |
| 1638 | holgerb | 338 | break; |
| 339 | case 28: |
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| 340 | i2c_write_byte(0x98); // Address of the DAC |
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| 341 | break; |
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| 342 | case 29: |
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| 343 | i2c_write_byte(0x14); // Update Channel C |
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| 344 | break; |
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| 345 | case 30: |
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| 346 | i2c_write_byte(AnalogOffsetGier); // Value |
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| 347 | break; |
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| 348 | case 31: |
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| 349 | i2c_write_byte(0x80); // Value |
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| 350 | break; |
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| 351 | case 32: |
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| 1639 | holgerb | 352 | I2C_Stop(); |
| 1638 | holgerb | 353 | I2CTimeout = 10; |
| 354 | twi_state = 0; |
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| 355 | break; |
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| 356 | default: twi_state = 0; |
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| 357 | break; |
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| 358 | } |
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| 359 | TWCR |= 0x80; |
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| 360 | } |
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| 1639 | holgerb | 361 |