1
Dependencies: mbed-dev-f303 FastPWM3
main.cpp@10:370851e6e132, 2016-05-12 (annotated)
- Committer:
- benkatz
- Date:
- Thu May 12 05:02:52 2016 +0000
- Revision:
- 10:370851e6e132
- Parent:
- 9:d7eb815cb057
- Child:
- 11:c83b18d41e54
Now featuring hobbyking startup tone!
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
benkatz | 0:4e1c4df6aabd | 1 | #include "mbed.h" |
benkatz | 0:4e1c4df6aabd | 2 | #include "PositionSensor.h" |
benkatz | 0:4e1c4df6aabd | 3 | #include "Inverter.h" |
benkatz | 0:4e1c4df6aabd | 4 | #include "SVM.h" |
benkatz | 0:4e1c4df6aabd | 5 | #include "FastMath.h" |
benkatz | 0:4e1c4df6aabd | 6 | #include "Transforms.h" |
benkatz | 0:4e1c4df6aabd | 7 | #include "CurrentRegulator.h" |
benkatz | 8:10ae7bc88d6e | 8 | #include "TorqueController.h" |
benkatz | 9:d7eb815cb057 | 9 | #include "ImpedanceController.h" |
benkatz | 9:d7eb815cb057 | 10 | |
benkatz | 9:d7eb815cb057 | 11 | ///SPI Input Stuff |
benkatz | 9:d7eb815cb057 | 12 | //DigitalIn cselect(PB_12); |
benkatz | 9:d7eb815cb057 | 13 | //InterruptIn select(PB_12); |
benkatz | 9:d7eb815cb057 | 14 | //DigitalIn mosi(PB_15); |
benkatz | 9:d7eb815cb057 | 15 | //SPISlave input(PB_15, PB_14, PB_13, PB_12); |
benkatz | 9:d7eb815cb057 | 16 | |
benkatz | 9:d7eb815cb057 | 17 | int id[3] = {0}; |
benkatz | 9:d7eb815cb057 | 18 | float cmd_float[3] = {0.0f}; |
benkatz | 9:d7eb815cb057 | 19 | int raw[3] = {0}; |
benkatz | 9:d7eb815cb057 | 20 | float val_max[3] = {18.0f, 1.0f, 0.1f}; |
benkatz | 9:d7eb815cb057 | 21 | int buff[8]; |
benkatz | 9:d7eb815cb057 | 22 | Serial pc(PA_2, PA_3); |
benkatz | 8:10ae7bc88d6e | 23 | |
benkatz | 8:10ae7bc88d6e | 24 | //PositionSensorEncoder encoder(8192,4.0f); |
benkatz | 2:8724412ad628 | 25 | //Inverter inverter(PA_5, PB_10, PB_3, PB_7, 0.02014160156, 0.00005); |
benkatz | 9:d7eb815cb057 | 26 | Inverter inverter(PA_10, PA_9, PA_8, PA_11, 0.02014160156, 0.00005); //hall motter |
benkatz | 8:10ae7bc88d6e | 27 | //Inverter inverter(PA_10, PA_9, PA_8, PB_7, 0.01007080078, 0.00005); //test motter |
benkatz | 10:370851e6e132 | 28 | //PositionSensorSPI spi(2048, 2.75f, 7); ///1 I really need an eeprom or something to store this.... |
benkatz | 10:370851e6e132 | 29 | //PositionSensorSPI spi(2048, 1.34f, 7); ///2 |
benkatz | 10:370851e6e132 | 30 | PositionSensorSPI spi(2048, 3.0, 21); |
benkatz | 9:d7eb815cb057 | 31 | int motorID = 40; ///1 |
benkatz | 9:d7eb815cb057 | 32 | //int motorID = 50; ///2 |
benkatz | 9:d7eb815cb057 | 33 | |
benkatz | 10:370851e6e132 | 34 | //PositionSensorEncoder encoder(1024, 0, 7); |
benkatz | 10:370851e6e132 | 35 | PositionSensorEncoder encoder(1024, 0, 21); |
benkatz | 10:370851e6e132 | 36 | |
benkatz | 8:10ae7bc88d6e | 37 | |
benkatz | 8:10ae7bc88d6e | 38 | CurrentRegulator foc(&inverter, &spi, .005, .5); //hall sensor |
benkatz | 9:d7eb815cb057 | 39 | TorqueController torqueController(.031f, &foc); |
benkatz | 9:d7eb815cb057 | 40 | ImpedanceController impedanceController(&torqueController, &spi, &encoder); |
benkatz | 9:d7eb815cb057 | 41 | |
benkatz | 8:10ae7bc88d6e | 42 | //CurrentRegulator foc(&inverter, &encoder, .005, .5); //test motter |
benkatz | 9:d7eb815cb057 | 43 | //SVPWM svpwm(&inverter, 2.0f); |
benkatz | 8:10ae7bc88d6e | 44 | |
benkatz | 7:dc5f27756e02 | 45 | Ticker testing; |
benkatz | 7:dc5f27756e02 | 46 | //Timer t; |
benkatz | 0:4e1c4df6aabd | 47 | |
benkatz | 8:10ae7bc88d6e | 48 | /* |
benkatz | 7:dc5f27756e02 | 49 | float v_d = 0; |
benkatz | 7:dc5f27756e02 | 50 | float v_q = .1; |
benkatz | 7:dc5f27756e02 | 51 | float v_alpha = 0; |
benkatz | 7:dc5f27756e02 | 52 | float v_beta = 0; |
benkatz | 7:dc5f27756e02 | 53 | float v_a = 0; |
benkatz | 7:dc5f27756e02 | 54 | float v_b = 0; |
benkatz | 7:dc5f27756e02 | 55 | float v_c = 0; |
benkatz | 8:10ae7bc88d6e | 56 | */ |
benkatz | 9:d7eb815cb057 | 57 | float ref = 0.0; |
benkatz | 9:d7eb815cb057 | 58 | int count = 0; |
benkatz | 4:c023f7b6f462 | 59 | |
benkatz | 4:c023f7b6f462 | 60 | //SPI spi(PB_15, PB_14, PB_13); |
benkatz | 4:c023f7b6f462 | 61 | //GPIOB->MODER = (1 << 8); // set pin 4 to be general purpose output |
benkatz | 4:c023f7b6f462 | 62 | |
benkatz | 4:c023f7b6f462 | 63 | //DigitalOut chipselect(PB_12); |
benkatz | 4:c023f7b6f462 | 64 | |
benkatz | 0:4e1c4df6aabd | 65 | using namespace FastMath; |
benkatz | 0:4e1c4df6aabd | 66 | using namespace Transforms; |
benkatz | 0:4e1c4df6aabd | 67 | |
benkatz | 0:4e1c4df6aabd | 68 | |
benkatz | 1:b8bceb4daed5 | 69 | // Current Sampling IRQ |
benkatz | 2:8724412ad628 | 70 | /* |
benkatz | 0:4e1c4df6aabd | 71 | extern "C" void TIM2_IRQHandler(void) { |
benkatz | 0:4e1c4df6aabd | 72 | // flash on update event |
benkatz | 0:4e1c4df6aabd | 73 | if (TIM2->SR & TIM_SR_UIF & TIM2->CNT>0x465) { |
benkatz | 0:4e1c4df6aabd | 74 | inverter.SampleCurrent(); |
benkatz | 0:4e1c4df6aabd | 75 | } |
benkatz | 0:4e1c4df6aabd | 76 | TIM2->SR = 0x0; // reset the status register |
benkatz | 0:4e1c4df6aabd | 77 | } |
benkatz | 2:8724412ad628 | 78 | */ |
benkatz | 8:10ae7bc88d6e | 79 | |
benkatz | 8:10ae7bc88d6e | 80 | |
benkatz | 8:10ae7bc88d6e | 81 | |
benkatz | 2:8724412ad628 | 82 | extern "C" void TIM1_UP_TIM10_IRQHandler(void) { |
benkatz | 2:8724412ad628 | 83 | // toggle on update event |
benkatz | 2:8724412ad628 | 84 | if (TIM1->SR & TIM_SR_UIF ) { |
benkatz | 2:8724412ad628 | 85 | inverter.SampleCurrent(); |
benkatz | 7:dc5f27756e02 | 86 | //wait(.00002); |
benkatz | 9:d7eb815cb057 | 87 | //foc.Commutate(); ///Putting the loop here doesn't work for some reason. Need to figure out why |
benkatz | 2:8724412ad628 | 88 | } |
benkatz | 2:8724412ad628 | 89 | TIM1->SR = 0x0; // reset the status register |
benkatz | 2:8724412ad628 | 90 | //GPIOC->ODR ^= (1 << 4); //Toggle pin for debugging |
benkatz | 2:8724412ad628 | 91 | } |
benkatz | 0:4e1c4df6aabd | 92 | |
benkatz | 8:10ae7bc88d6e | 93 | |
benkatz | 10:370851e6e132 | 94 | void hk_start(void){ |
benkatz | 10:370851e6e132 | 95 | inverter.SetDTC(0, 0, 0); |
benkatz | 10:370851e6e132 | 96 | inverter.EnableInverter(); |
benkatz | 10:370851e6e132 | 97 | for(int i = 0; i<120; i++){ |
benkatz | 10:370851e6e132 | 98 | torqueController.SetTorque(.4); |
benkatz | 10:370851e6e132 | 99 | wait(0.000956); |
benkatz | 10:370851e6e132 | 100 | torqueController.SetTorque(-.4); |
benkatz | 10:370851e6e132 | 101 | wait(0.000956); |
benkatz | 10:370851e6e132 | 102 | } |
benkatz | 10:370851e6e132 | 103 | for(int i = 0; i<120; i++){ |
benkatz | 10:370851e6e132 | 104 | torqueController.SetTorque(.4); |
benkatz | 10:370851e6e132 | 105 | wait(0.0008513); |
benkatz | 10:370851e6e132 | 106 | torqueController.SetTorque(-.4); |
benkatz | 10:370851e6e132 | 107 | wait(0.0008513); |
benkatz | 10:370851e6e132 | 108 | } |
benkatz | 10:370851e6e132 | 109 | for(int i = 0; i<120; i++){ |
benkatz | 10:370851e6e132 | 110 | torqueController.SetTorque(.4); |
benkatz | 10:370851e6e132 | 111 | wait(0.00075843); |
benkatz | 10:370851e6e132 | 112 | torqueController.SetTorque(-.4); |
benkatz | 10:370851e6e132 | 113 | wait(0.00075843); |
benkatz | 10:370851e6e132 | 114 | } |
benkatz | 10:370851e6e132 | 115 | torqueController.SetTorque(0); |
benkatz | 10:370851e6e132 | 116 | wait(.4); |
benkatz | 10:370851e6e132 | 117 | for (int j = 0; j<3; j++){ |
benkatz | 10:370851e6e132 | 118 | for(int i = 0; i<120; i++){ |
benkatz | 10:370851e6e132 | 119 | torqueController.SetTorque(.4); |
benkatz | 10:370851e6e132 | 120 | wait(0.000956); |
benkatz | 10:370851e6e132 | 121 | torqueController.SetTorque(-.4); |
benkatz | 10:370851e6e132 | 122 | wait(0.000956); |
benkatz | 10:370851e6e132 | 123 | } |
benkatz | 10:370851e6e132 | 124 | torqueController.SetTorque(0); |
benkatz | 10:370851e6e132 | 125 | wait(.2); |
benkatz | 10:370851e6e132 | 126 | |
benkatz | 10:370851e6e132 | 127 | } |
benkatz | 10:370851e6e132 | 128 | |
benkatz | 10:370851e6e132 | 129 | } |
benkatz | 10:370851e6e132 | 130 | |
benkatz | 8:10ae7bc88d6e | 131 | |
benkatz | 8:10ae7bc88d6e | 132 | /* |
benkatz | 7:dc5f27756e02 | 133 | void voltage_foc(void){ |
benkatz | 7:dc5f27756e02 | 134 | float theta = encoder.GetElecPosition(); |
benkatz | 7:dc5f27756e02 | 135 | InvPark(v_d, v_q, theta, &v_alpha, &v_beta); |
benkatz | 7:dc5f27756e02 | 136 | InvClarke(v_alpha, v_beta, &v_a, &v_b, &v_c); |
benkatz | 7:dc5f27756e02 | 137 | svpwm.Update_DTC(v_a, v_b, v_c); |
benkatz | 7:dc5f27756e02 | 138 | //output.write(theta/6.28318530718f); |
benkatz | 7:dc5f27756e02 | 139 | } |
benkatz | 8:10ae7bc88d6e | 140 | */ |
benkatz | 9:d7eb815cb057 | 141 | /* |
benkatz | 9:d7eb815cb057 | 142 | void read(void){ |
benkatz | 9:d7eb815cb057 | 143 | int startByte; |
benkatz | 9:d7eb815cb057 | 144 | if(input.receive()){ |
benkatz | 9:d7eb815cb057 | 145 | //startByte = input.read(); |
benkatz | 9:d7eb815cb057 | 146 | //if(startByte == 65535){ |
benkatz | 9:d7eb815cb057 | 147 | //startByte = input.read(); |
benkatz | 9:d7eb815cb057 | 148 | //wait(.000005); |
benkatz | 9:d7eb815cb057 | 149 | raw[0] = input.read(); |
benkatz | 9:d7eb815cb057 | 150 | raw[1] = input.read(); |
benkatz | 9:d7eb815cb057 | 151 | raw[2] = input.read(); |
benkatz | 9:d7eb815cb057 | 152 | id[0] = raw[0]>>14; |
benkatz | 9:d7eb815cb057 | 153 | id[1] = raw[1]>>14; |
benkatz | 9:d7eb815cb057 | 154 | id[2] = raw[2]>>14; |
benkatz | 9:d7eb815cb057 | 155 | printf("%d %d %d\n\r", raw[0], raw[1], raw[2]); |
benkatz | 9:d7eb815cb057 | 156 | for(int i = 0; i<3; i++){ |
benkatz | 9:d7eb815cb057 | 157 | cmd_float[id[i]] = (val_max[id[i]])*(float)(raw[i] - (id[i]<<14))/16383.0f; |
benkatz | 9:d7eb815cb057 | 158 | } |
benkatz | 9:d7eb815cb057 | 159 | // } |
benkatz | 9:d7eb815cb057 | 160 | // else{ |
benkatz | 9:d7eb815cb057 | 161 | // input.read(); |
benkatz | 9:d7eb815cb057 | 162 | // input.read(); |
benkatz | 9:d7eb815cb057 | 163 | // input.read(); |
benkatz | 9:d7eb815cb057 | 164 | // } |
benkatz | 9:d7eb815cb057 | 165 | //printf("%d %d %d \n\r", raw[0], raw[1], raw[2]); |
benkatz | 9:d7eb815cb057 | 166 | } |
benkatz | 9:d7eb815cb057 | 167 | |
benkatz | 9:d7eb815cb057 | 168 | } |
benkatz | 9:d7eb815cb057 | 169 | |
benkatz | 9:d7eb815cb057 | 170 | */ |
benkatz | 9:d7eb815cb057 | 171 | |
benkatz | 9:d7eb815cb057 | 172 | void serialInterrupt(void){ |
benkatz | 9:d7eb815cb057 | 173 | //wait(.001); |
benkatz | 9:d7eb815cb057 | 174 | int i = 0; |
benkatz | 9:d7eb815cb057 | 175 | while(pc.readable()){ |
benkatz | 9:d7eb815cb057 | 176 | buff[i] = pc.getc(); |
benkatz | 9:d7eb815cb057 | 177 | wait(.0001); |
benkatz | 9:d7eb815cb057 | 178 | i++; |
benkatz | 9:d7eb815cb057 | 179 | |
benkatz | 9:d7eb815cb057 | 180 | } |
benkatz | 9:d7eb815cb057 | 181 | int val = (buff[4]<<8) + buff[5]; |
benkatz | 9:d7eb815cb057 | 182 | int checksum = buff[2]^buff[3]^buff[4]^buff[5]; |
benkatz | 9:d7eb815cb057 | 183 | int validStart = (buff[0] == 255 && buff[1] == 255 && buff[2]==motorID && checksum==buff[6]); |
benkatz | 9:d7eb815cb057 | 184 | |
benkatz | 9:d7eb815cb057 | 185 | if(validStart){ |
benkatz | 9:d7eb815cb057 | 186 | |
benkatz | 9:d7eb815cb057 | 187 | switch(buff[3]){ |
benkatz | 9:d7eb815cb057 | 188 | case 10: |
benkatz | 9:d7eb815cb057 | 189 | cmd_float[1] = (float)val*val_max[1]/65278.0f; |
benkatz | 9:d7eb815cb057 | 190 | break; |
benkatz | 9:d7eb815cb057 | 191 | case 20: |
benkatz | 9:d7eb815cb057 | 192 | cmd_float[2] = (float)val*val_max[2]/65278.0f; |
benkatz | 9:d7eb815cb057 | 193 | break; |
benkatz | 9:d7eb815cb057 | 194 | case 30: |
benkatz | 9:d7eb815cb057 | 195 | cmd_float[0] = (float)val*val_max[0]/65278.0f; |
benkatz | 9:d7eb815cb057 | 196 | break; |
benkatz | 9:d7eb815cb057 | 197 | } |
benkatz | 9:d7eb815cb057 | 198 | } |
benkatz | 9:d7eb815cb057 | 199 | |
benkatz | 9:d7eb815cb057 | 200 | |
benkatz | 9:d7eb815cb057 | 201 | //pc.printf("%d %d %d %d %d %d %d \n", start1, start2, id, cmd, byte1, byte2, byte3); |
benkatz | 9:d7eb815cb057 | 202 | //pc.printf("%f, %f, %f\n", cmd_float[0], cmd_float[1], cmd_float[2]); |
benkatz | 9:d7eb815cb057 | 203 | //pc.printf("%d\n", cmd); |
benkatz | 9:d7eb815cb057 | 204 | //pc.printf("%d, %d, %d, %d, %d, %d, %d, %d\n", buff[0], buff[1], buff[2], buff[3], buff[4], buff[5], buff[6], buff[7]); |
benkatz | 9:d7eb815cb057 | 205 | } |
benkatz | 9:d7eb815cb057 | 206 | |
benkatz | 0:4e1c4df6aabd | 207 | void Loop(void){ |
benkatz | 9:d7eb815cb057 | 208 | |
benkatz | 10:370851e6e132 | 209 | //impedanceController.SetImpedance(cmd_float[1], cmd_float[2], cmd_float[0]); |
benkatz | 10:370851e6e132 | 210 | impedanceController.SetImpedance(-.04, -0.00, 0); |
benkatz | 9:d7eb815cb057 | 211 | |
benkatz | 9:d7eb815cb057 | 212 | count = count+1; |
benkatz | 9:d7eb815cb057 | 213 | |
benkatz | 9:d7eb815cb057 | 214 | if(count > 1000){ |
benkatz | 9:d7eb815cb057 | 215 | //ref= -1*ref; |
benkatz | 9:d7eb815cb057 | 216 | //printf("%f %f %f \n\r", cmd_float[0], cmd_float[1], cmd_float[2]); |
benkatz | 9:d7eb815cb057 | 217 | //float e = spi.GetElecPosition(); |
benkatz | 9:d7eb815cb057 | 218 | //printf("%f\n\r", e); |
benkatz | 9:d7eb815cb057 | 219 | count = 0; |
benkatz | 9:d7eb815cb057 | 220 | } |
benkatz | 9:d7eb815cb057 | 221 | |
benkatz | 9:d7eb815cb057 | 222 | |
benkatz | 9:d7eb815cb057 | 223 | //torqueController.SetTorque(0); |
benkatz | 9:d7eb815cb057 | 224 | //foc.Commutate(); |
benkatz | 7:dc5f27756e02 | 225 | //voltage_foc(); |
benkatz | 0:4e1c4df6aabd | 226 | } |
benkatz | 3:6a0015d88d06 | 227 | |
benkatz | 3:6a0015d88d06 | 228 | void PrintStuff(void){ |
benkatz | 9:d7eb815cb057 | 229 | //float v = encoder.GetMechVelocity(); |
benkatz | 8:10ae7bc88d6e | 230 | //float position = encoder.GetElecPosition(); |
benkatz | 8:10ae7bc88d6e | 231 | //float position = encoder.GetMechPosition(); |
benkatz | 9:d7eb815cb057 | 232 | //float m = spi.GetMechPosition(); |
benkatz | 10:370851e6e132 | 233 | //float e = spi.GetElecPosition(); |
benkatz | 10:370851e6e132 | 234 | //printf("%f\n\r", e); |
benkatz | 9:d7eb815cb057 | 235 | //printf("%f %f %f %f \n\r", m, cmd_float[0], cmd_float[1], cmd_float[2]); |
benkatz | 9:d7eb815cb057 | 236 | //printf("%d %d %d\n\r", raw[0], raw[1], raw[2]); |
benkatz | 3:6a0015d88d06 | 237 | } |
benkatz | 7:dc5f27756e02 | 238 | |
benkatz | 7:dc5f27756e02 | 239 | |
benkatz | 1:b8bceb4daed5 | 240 | |
benkatz | 7:dc5f27756e02 | 241 | |
benkatz | 7:dc5f27756e02 | 242 | /* |
benkatz | 7:dc5f27756e02 | 243 | void gen_sine(void){ |
benkatz | 7:dc5f27756e02 | 244 | float f = 1.0f; |
benkatz | 7:dc5f27756e02 | 245 | float time = t.read(); |
benkatz | 7:dc5f27756e02 | 246 | float a = .45f*sin(6.28318530718f*f*time) + .5f; |
benkatz | 7:dc5f27756e02 | 247 | float b = .45f*sin(6.28318530718f*f*time + 2.09439510239f) + .5f; |
benkatz | 7:dc5f27756e02 | 248 | float c = .45f*sin(6.28318530718f*f*time + 4.18879020479f) + .5f; |
benkatz | 7:dc5f27756e02 | 249 | inverter.SetDTC(a, b, c); |
benkatz | 7:dc5f27756e02 | 250 | } |
benkatz | 7:dc5f27756e02 | 251 | */ |
benkatz | 0:4e1c4df6aabd | 252 | |
benkatz | 0:4e1c4df6aabd | 253 | int main() { |
benkatz | 9:d7eb815cb057 | 254 | //mosi.mode(PullDown); |
benkatz | 9:d7eb815cb057 | 255 | //cselect.mode(PullUp); |
benkatz | 9:d7eb815cb057 | 256 | inverter.DisableInverter(); |
benkatz | 9:d7eb815cb057 | 257 | spi.ZeroPosition(); |
benkatz | 9:d7eb815cb057 | 258 | //input.format(16, 0); |
benkatz | 9:d7eb815cb057 | 259 | //input.frequency(100000); |
benkatz | 9:d7eb815cb057 | 260 | //select.fall(&read); |
benkatz | 9:d7eb815cb057 | 261 | |
benkatz | 9:d7eb815cb057 | 262 | |
benkatz | 9:d7eb815cb057 | 263 | //NVIC_SetPriority(EXTI15_10_IRQn, 1); |
benkatz | 9:d7eb815cb057 | 264 | wait(.1); |
benkatz | 9:d7eb815cb057 | 265 | inverter.SetDTC(0.2, 0.2, 0.2); |
benkatz | 9:d7eb815cb057 | 266 | inverter.EnableInverter(); |
benkatz | 10:370851e6e132 | 267 | hk_start(); |
benkatz | 10:370851e6e132 | 268 | //foc.Reset(); |
benkatz | 0:4e1c4df6aabd | 269 | testing.attach(&Loop, .0001); |
benkatz | 9:d7eb815cb057 | 270 | NVIC_SetPriority(TIM5_IRQn, 2); |
benkatz | 9:d7eb815cb057 | 271 | pc.baud(115200); |
benkatz | 9:d7eb815cb057 | 272 | //pc.attach(&serialInterrupt); |
benkatz | 9:d7eb815cb057 | 273 | //printf("hello\n\r"); |
benkatz | 7:dc5f27756e02 | 274 | //testing.attach(&gen_sine, .01); |
benkatz | 7:dc5f27756e02 | 275 | //testing.attach(&PrintStuff, .1); |
benkatz | 8:10ae7bc88d6e | 276 | //inverter.SetDTC(.05, 0, 0); |
benkatz | 9:d7eb815cb057 | 277 | //inverter.DisableInverter(); |
benkatz | 7:dc5f27756e02 | 278 | //foc.Commutate(); |
benkatz | 9:d7eb815cb057 | 279 | wait(.5); |
benkatz | 0:4e1c4df6aabd | 280 | while(1) { |
benkatz | 3:6a0015d88d06 | 281 | //printf("%f\n\r", encoder.GetElecPosition()); |
benkatz | 3:6a0015d88d06 | 282 | //wait(.1); |
benkatz | 0:4e1c4df6aabd | 283 | } |
benkatz | 0:4e1c4df6aabd | 284 | } |