Hiroh Satoh / keyboard Featured

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Dependencies:   BLE_API mbed-dev nRF51822

main.cpp@27:7370b8994603, 2016-08-22 (annotated)

Committer:
cho45
Date:
Mon Aug 22 23:14:42 2016 +0000
Revision:
27:7370b8994603
Parent:
26:78ee13f69ec3
Child:
28:1f843a3daab0
??? Ticker ???????????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cho45 0:be89b5fdea09 1 /* mbed Microcontroller Library
cho45 0:be89b5fdea09 2 * Copyright (c) 2015 ARM Limited
cho45 0:be89b5fdea09 3 *
cho45 0:be89b5fdea09 4 * Licensed under the Apache License, Version 2.0 (the "License");
cho45 0:be89b5fdea09 5 * you may not use this file except in compliance with the License.
cho45 0:be89b5fdea09 6 * You may obtain a copy of the License at
cho45 0:be89b5fdea09 7 *
cho45 0:be89b5fdea09 8 * http://www.apache.org/licenses/LICENSE-2.0
cho45 0:be89b5fdea09 9 *
cho45 0:be89b5fdea09 10 * Unless required by applicable law or agreed to in writing, software
cho45 0:be89b5fdea09 11 * distributed under the License is distributed on an "AS IS" BASIS,
cho45 0:be89b5fdea09 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
cho45 0:be89b5fdea09 13 * See the License for the specific language governing permissions and
cho45 0:be89b5fdea09 14 * limitations under the License.
cho45 0:be89b5fdea09 15 */
cho45 0:be89b5fdea09 16
cho45 0:be89b5fdea09 17 #include "mbed.h"
cho45 26:78ee13f69ec3 18 #include "Ticker.h"
cho45 6:f1c3ea8bc850 19
cho45 6:f1c3ea8bc850 20 #include "HIDController_BLE.h"
cho45 6:f1c3ea8bc850 21
cho45 4:54cb552e50c4 22 #include "mcp23017.h"
cho45 5:65d4e94735b6 23 #include "keymap.h"
cho45 0:be89b5fdea09 24
cho45 0:be89b5fdea09 25
cho45 5:65d4e94735b6 26 class KeyboardMatrixController {
cho45 5:65d4e94735b6 27 I2C& i2c;
cho45 5:65d4e94735b6 28 MCP23017 gpio1;
cho45 5:65d4e94735b6 29 MCP23017 gpio2;
cho45 13:b0ffdf2012b9 30 bool gpio1_ready;
cho45 13:b0ffdf2012b9 31 bool gpio2_ready;
cho45 5:65d4e94735b6 32
cho45 5:65d4e94735b6 33 static const uint8_t GPIO1_SLAVE_ADDRESS = 0b0100000;
cho45 14:3a8c126b7834 34 static const uint8_t GPIO2_SLAVE_ADDRESS = 0b0100100;
cho45 5:65d4e94735b6 35
cho45 5:65d4e94735b6 36 /**
cho45 5:65d4e94735b6 37 * COL=GPIOA (output normaly positive)
cho45 5:65d4e94735b6 38 * ROW=GPIOB (input pulled-up)
cho45 5:65d4e94735b6 39 */
cho45 5:65d4e94735b6 40
cho45 13:b0ffdf2012b9 41 bool setupGpio(MCP23017& gpio) {
cho45 5:65d4e94735b6 42 int ok;
cho45 13:b0ffdf2012b9 43 printf("SET IOCON\r\n");
cho45 5:65d4e94735b6 44 ok = gpio.write8(
cho45 5:65d4e94735b6 45 MCP23017::IOCON,
cho45 5:65d4e94735b6 46 0<<MCP23017::BANK |
cho45 5:65d4e94735b6 47 1<<MCP23017::MIRROR |
cho45 5:65d4e94735b6 48 1<<MCP23017::SEQOP |
cho45 5:65d4e94735b6 49 0<<MCP23017::DISSLW |
cho45 5:65d4e94735b6 50 1<<MCP23017::ODR // int pin is open drain
cho45 5:65d4e94735b6 51 );
cho45 13:b0ffdf2012b9 52 if (!ok) return false;
cho45 5:65d4e94735b6 53
cho45 5:65d4e94735b6 54 // IODIR
cho45 5:65d4e94735b6 55 // 1: input
cho45 5:65d4e94735b6 56 // 0: output
cho45 13:b0ffdf2012b9 57 printf("SET IODIRA\r\n");
cho45 5:65d4e94735b6 58 ok = gpio.write16(
cho45 5:65d4e94735b6 59 MCP23017::IODIRA,
cho45 5:65d4e94735b6 60 0b0000000011111111
cho45 5:65d4e94735b6 61 );
cho45 13:b0ffdf2012b9 62 if (!ok) return false;
cho45 4:54cb552e50c4 63
cho45 5:65d4e94735b6 64 // INPUT POLARITY
cho45 5:65d4e94735b6 65 // 1: inverse polarity
cho45 5:65d4e94735b6 66 // 0: raw
cho45 13:b0ffdf2012b9 67 printf("SET IPOLB\r\n");
cho45 5:65d4e94735b6 68 ok = gpio.write8(
cho45 5:65d4e94735b6 69 MCP23017::IPOLB,
cho45 5:65d4e94735b6 70 0b11111111
cho45 5:65d4e94735b6 71 );
cho45 13:b0ffdf2012b9 72 if (!ok) return false;
cho45 5:65d4e94735b6 73
cho45 5:65d4e94735b6 74 // INTERRUPT-ON-CHANGE Enable
cho45 13:b0ffdf2012b9 75 printf("SET GPINTENB\r\n");
cho45 5:65d4e94735b6 76 ok = gpio.write8(
cho45 5:65d4e94735b6 77 MCP23017::GPINTENB,
cho45 5:65d4e94735b6 78 0b11111111
cho45 5:65d4e94735b6 79 );
cho45 13:b0ffdf2012b9 80 if (!ok) return false;
cho45 13:b0ffdf2012b9 81
cho45 5:65d4e94735b6 82 // INTERRUPT-ON-CHANGE Control
cho45 5:65d4e94735b6 83 // 1: compared with DEFVAL
cho45 5:65d4e94735b6 84 // 0: compared to previous value
cho45 13:b0ffdf2012b9 85 printf("SET INTCONB\r\n");
cho45 5:65d4e94735b6 86 ok = gpio.write8(
cho45 5:65d4e94735b6 87 MCP23017::INTCONB,
cho45 5:65d4e94735b6 88 0b00000000
cho45 5:65d4e94735b6 89 );
cho45 13:b0ffdf2012b9 90 if (!ok) return false;
cho45 13:b0ffdf2012b9 91
cho45 5:65d4e94735b6 92 // PULL-UP (for input pin)
cho45 5:65d4e94735b6 93 // 1: pull-up enabled
cho45 5:65d4e94735b6 94 // 0: pull-up disabled
cho45 13:b0ffdf2012b9 95 printf("SET GPPUB\r\n");
cho45 5:65d4e94735b6 96 ok = gpio.write8(
cho45 5:65d4e94735b6 97 MCP23017::GPPUB,
cho45 5:65d4e94735b6 98 0b11111111
cho45 5:65d4e94735b6 99 );
cho45 13:b0ffdf2012b9 100 if (!ok) return false;
cho45 5:65d4e94735b6 101
cho45 13:b0ffdf2012b9 102 printf("SET GPIOA\r\n");
cho45 5:65d4e94735b6 103 ok = gpio1.write8(
cho45 5:65d4e94735b6 104 MCP23017::GPIOA,
cho45 5:65d4e94735b6 105 0b00000000
cho45 5:65d4e94735b6 106 );
cho45 13:b0ffdf2012b9 107 if (!ok) return false;
cho45 5:65d4e94735b6 108
cho45 13:b0ffdf2012b9 109 return true;
cho45 5:65d4e94735b6 110 }
cho45 5:65d4e94735b6 111
cho45 4:54cb552e50c4 112 public:
cho45 5:65d4e94735b6 113 KeyboardMatrixController(I2C& _i2c) :
cho45 5:65d4e94735b6 114 i2c(_i2c),
cho45 5:65d4e94735b6 115 gpio1(i2c, GPIO1_SLAVE_ADDRESS),
cho45 5:65d4e94735b6 116 gpio2(i2c, GPIO2_SLAVE_ADDRESS)
cho45 4:54cb552e50c4 117 {
cho45 4:54cb552e50c4 118 }
cho45 4:54cb552e50c4 119
cho45 5:65d4e94735b6 120 void init() {
cho45 13:b0ffdf2012b9 121 printf("init gpio1\r\n");
cho45 13:b0ffdf2012b9 122 gpio1_ready = setupGpio(gpio1);
cho45 13:b0ffdf2012b9 123 printf("gpio1 initialized: %s\r\n", gpio1_ready ? "success" : "failed");
cho45 13:b0ffdf2012b9 124
cho45 13:b0ffdf2012b9 125 printf("init gpio2\r\n");
cho45 13:b0ffdf2012b9 126 gpio2_ready = setupGpio(gpio2);
cho45 13:b0ffdf2012b9 127 printf("gpio2 initialized: %s\r\n", gpio2_ready ? "success" : "failed");
cho45 13:b0ffdf2012b9 128
cho45 5:65d4e94735b6 129 }
cho45 5:65d4e94735b6 130
cho45 5:65d4e94735b6 131 void scanKeyboard(uint8_t* keys) {
cho45 5:65d4e94735b6 132 int ok;
cho45 13:b0ffdf2012b9 133
cho45 13:b0ffdf2012b9 134 disableInterrupt();
cho45 5:65d4e94735b6 135
cho45 13:b0ffdf2012b9 136 if (gpio1_ready) {
cho45 13:b0ffdf2012b9 137 for (int i = 0; i < 8; i++) {
cho45 13:b0ffdf2012b9 138 ok = gpio1.write8(
cho45 13:b0ffdf2012b9 139 MCP23017::GPIOA,
cho45 13:b0ffdf2012b9 140 ~(1<<i)
cho45 13:b0ffdf2012b9 141 );
cho45 13:b0ffdf2012b9 142 keys[i] = gpio1.read8(MCP23017::GPIOB, ok);
cho45 13:b0ffdf2012b9 143 }
cho45 13:b0ffdf2012b9 144
cho45 13:b0ffdf2012b9 145 // set all output to negative for interrupt
cho45 5:65d4e94735b6 146 ok = gpio1.write8(
cho45 5:65d4e94735b6 147 MCP23017::GPIOA,
cho45 13:b0ffdf2012b9 148 0b00000000
cho45 5:65d4e94735b6 149 );
cho45 4:54cb552e50c4 150 }
cho45 2:c2e3f240640c 151
cho45 5:65d4e94735b6 152
cho45 13:b0ffdf2012b9 153 if (gpio2_ready) {
cho45 13:b0ffdf2012b9 154 for (int i = 0; i < 8; i++) {
cho45 13:b0ffdf2012b9 155 ok = gpio2.write8(
cho45 13:b0ffdf2012b9 156 MCP23017::GPIOA,
cho45 13:b0ffdf2012b9 157 ~(1<<i)
cho45 13:b0ffdf2012b9 158 );
cho45 13:b0ffdf2012b9 159 keys[i+8] = gpio2.read8(MCP23017::GPIOB, ok);
cho45 13:b0ffdf2012b9 160 }
cho45 13:b0ffdf2012b9 161
cho45 13:b0ffdf2012b9 162 // set all output to negative for interrupt
cho45 13:b0ffdf2012b9 163 ok = gpio2.write8(
cho45 13:b0ffdf2012b9 164 MCP23017::GPIOA,
cho45 13:b0ffdf2012b9 165 0b00000000
cho45 13:b0ffdf2012b9 166 );
cho45 13:b0ffdf2012b9 167 }
cho45 13:b0ffdf2012b9 168
cho45 13:b0ffdf2012b9 169 enableInterrupt();
cho45 7:b9270a37345b 170 }
cho45 13:b0ffdf2012b9 171
cho45 7:b9270a37345b 172 void disableInterrupt() {
cho45 7:b9270a37345b 173 int ok;
cho45 13:b0ffdf2012b9 174 if (gpio1_ready) {
cho45 13:b0ffdf2012b9 175 // Disable interrupt
cho45 13:b0ffdf2012b9 176 ok = gpio1.write8(
cho45 13:b0ffdf2012b9 177 MCP23017::GPINTENB,
cho45 13:b0ffdf2012b9 178 0b00000000
cho45 13:b0ffdf2012b9 179 );
cho45 13:b0ffdf2012b9 180 }
cho45 13:b0ffdf2012b9 181
cho45 13:b0ffdf2012b9 182 if (gpio2_ready) {
cho45 13:b0ffdf2012b9 183 // Disable interrupt
cho45 13:b0ffdf2012b9 184 ok = gpio2.write8(
cho45 13:b0ffdf2012b9 185 MCP23017::GPINTENB,
cho45 13:b0ffdf2012b9 186 0b00000000
cho45 13:b0ffdf2012b9 187 );
cho45 13:b0ffdf2012b9 188 }
cho45 7:b9270a37345b 189 }
cho45 7:b9270a37345b 190
cho45 7:b9270a37345b 191 void enableInterrupt() {
cho45 7:b9270a37345b 192 int ok;
cho45 13:b0ffdf2012b9 193 if (gpio1_ready) {
cho45 13:b0ffdf2012b9 194 // Enable interrupt
cho45 13:b0ffdf2012b9 195 ok = gpio1.write8(
cho45 13:b0ffdf2012b9 196 MCP23017::GPINTENB,
cho45 13:b0ffdf2012b9 197 0b11111111
cho45 13:b0ffdf2012b9 198 );
cho45 13:b0ffdf2012b9 199 }
cho45 13:b0ffdf2012b9 200
cho45 13:b0ffdf2012b9 201 if (gpio2_ready) {
cho45 13:b0ffdf2012b9 202 // Enable interrupt
cho45 13:b0ffdf2012b9 203 ok = gpio2.write8(
cho45 13:b0ffdf2012b9 204 MCP23017::GPINTENB,
cho45 13:b0ffdf2012b9 205 0b11111111
cho45 13:b0ffdf2012b9 206 );
cho45 13:b0ffdf2012b9 207 }
cho45 5:65d4e94735b6 208
cho45 5:65d4e94735b6 209 // Clear interrupt
cho45 13:b0ffdf2012b9 210 // gpio1.read8(MCP23017::GPIOB, ok);
cho45 4:54cb552e50c4 211 }
cho45 5:65d4e94735b6 212 };
cho45 4:54cb552e50c4 213
cho45 5:65d4e94735b6 214 I2C i2c(I2C_SDA0, I2C_SCL0);
cho45 16:345eebc4f259 215 // Serial serial(USBTX, USBRX);
cho45 5:65d4e94735b6 216 KeyboardMatrixController keyboardMatrixController(i2c);
cho45 6:f1c3ea8bc850 217 Keymap keymap;
cho45 15:70bf079d3ee1 218
cho45 15:70bf079d3ee1 219 // Interrupt from MCP23017
cho45 15:70bf079d3ee1 220 // (pulled-up and two MCP23017 is configured with open drain INT)
cho45 5:65d4e94735b6 221 InterruptIn buttonInt(P0_5);
cho45 5:65d4e94735b6 222
cho45 27:7370b8994603 223 // Ticker ticker;
cho45 26:78ee13f69ec3 224 DigitalOut statusLed(P0_4, 1);
cho45 26:78ee13f69ec3 225
cho45 25:094df0d9e95b 226
cho45 15:70bf079d3ee1 227 // Unsed pins. Set to output for power consumption
cho45 20:d8840ac38434 228 DigitalIn unused_p0_7(P0_7, PullUp);
cho45 20:d8840ac38434 229 DigitalIn unused_p0_6(P0_6, PullUp);
cho45 20:d8840ac38434 230 DigitalIn unused_p0_15(P0_15, PullUp);
cho45 20:d8840ac38434 231 DigitalIn unused_p0_29(P0_29, PullUp);
cho45 20:d8840ac38434 232 DigitalIn unused_p0_28(P0_28, PullUp);
cho45 20:d8840ac38434 233 DigitalIn unused_p0_19(P0_19, PullUp); // This is on board LED which connected to VDD
cho45 22:a78f0a91280a 234 DigitalIn unused_p0_11(P0_11, PullUp); // RXD
cho45 15:70bf079d3ee1 235
cho45 5:65d4e94735b6 236 // ROWS=8
cho45 5:65d4e94735b6 237 // COLS=16
cho45 5:65d4e94735b6 238 // 列ごとに1バイトにパックしてキーの状態を保持する
cho45 5:65d4e94735b6 239 static uint8_t keysA[COLS];
cho45 5:65d4e94735b6 240 static uint8_t keysB[COLS];
cho45 5:65d4e94735b6 241 static bool state = 0;
cho45 9:d1daefbf1fbd 242 // delay for interrupt
cho45 23:b31957ce64e9 243 static volatile int8_t pollCount = 50;
cho45 5:65d4e94735b6 244
cho45 5:65d4e94735b6 245 void buttonIntCallback() {
cho45 8:d684faf04c9a 246 // just for wakeup
cho45 9:d1daefbf1fbd 247 pollCount = 100;
cho45 2:c2e3f240640c 248 }
cho45 2:c2e3f240640c 249
cho45 23:b31957ce64e9 250 void powerOff() {
cho45 23:b31957ce64e9 251 printf("power off\r\n");
cho45 23:b31957ce64e9 252 NRF_POWER->SYSTEMOFF = 1;
cho45 23:b31957ce64e9 253 }
cho45 23:b31957ce64e9 254
cho45 26:78ee13f69ec3 255 void tickerStatus() {
cho45 26:78ee13f69ec3 256 statusLed = !statusLed;
cho45 26:78ee13f69ec3 257 }
cho45 26:78ee13f69ec3 258
cho45 0:be89b5fdea09 259 int main(void) {
cho45 5:65d4e94735b6 260 printf("init\r\n");
cho45 4:54cb552e50c4 261
cho45 4:54cb552e50c4 262 // mbed's Serial of TARGET_RBLAB_BLENANO sucks
cho45 4:54cb552e50c4 263 // DO NOT CONNECT RTS/CTS AUTOMATICALY!
cho45 4:54cb552e50c4 264 NRF_UART0->PSELRTS = 0xFFFFFFFFUL;
cho45 4:54cb552e50c4 265 NRF_UART0->PSELCTS = 0xFFFFFFFFUL;
cho45 16:345eebc4f259 266
cho45 4:54cb552e50c4 267 // 100kHz
cho45 4:54cb552e50c4 268 i2c.frequency(100000);
cho45 4:54cb552e50c4 269
cho45 5:65d4e94735b6 270 buttonInt.mode(PullUp);
cho45 5:65d4e94735b6 271 buttonInt.fall(buttonIntCallback);
cho45 4:54cb552e50c4 272
cho45 5:65d4e94735b6 273 keyboardMatrixController.init();
cho45 5:65d4e94735b6 274 buttonIntCallback();
cho45 4:54cb552e50c4 275
cho45 6:f1c3ea8bc850 276 HIDController::init();
cho45 16:345eebc4f259 277
cho45 16:345eebc4f259 278 // STOP UART RX for power consumption
cho45 21:d801c32231b0 279 NRF_UART0->TASKS_STOPRX = 1;
cho45 16:345eebc4f259 280
cho45 16:345eebc4f259 281 NRF_TWI0->ENABLE = TWI_ENABLE_ENABLE_Disabled << TWI_ENABLE_ENABLE_Pos;
cho45 23:b31957ce64e9 282
cho45 23:b31957ce64e9 283
cho45 27:7370b8994603 284 // ticker.attach(tickerStatus, 0.5);
cho45 5:65d4e94735b6 285 while (1) {
cho45 27:7370b8994603 286 /*
cho45 27:7370b8994603 287 ticker.detach();
cho45 27:7370b8994603 288 switch (HIDController::status()) {
cho45 27:7370b8994603 289 case DISCONNECTED: ticker.attach(tickerStatus, 1); break;
cho45 27:7370b8994603 290 case CONNECTING: ticker.attach(tickerStatus, 2); break;
cho45 27:7370b8994603 291 case CONNECTED: ticker.attach(tickerStatus, 60);break;
cho45 27:7370b8994603 292 }
cho45 27:7370b8994603 293 */
cho45 27:7370b8994603 294
cho45 27:7370b8994603 295
cho45 23:b31957ce64e9 296 if (pollCount > 0) {
cho45 23:b31957ce64e9 297 printf("scan keys\r\n");
cho45 23:b31957ce64e9 298 while (pollCount -- > 0) {
cho45 23:b31957ce64e9 299 uint8_t (&keysCurr)[COLS] = state ? keysA : keysB;
cho45 23:b31957ce64e9 300 uint8_t (&keysPrev)[COLS] = state ? keysB : keysA;
cho45 23:b31957ce64e9 301
cho45 23:b31957ce64e9 302 NRF_TWI0->ENABLE = TWI_ENABLE_ENABLE_Enabled << TWI_ENABLE_ENABLE_Pos;
cho45 23:b31957ce64e9 303 keyboardMatrixController.scanKeyboard(keysCurr);
cho45 23:b31957ce64e9 304 NRF_TWI0->ENABLE = TWI_ENABLE_ENABLE_Disabled << TWI_ENABLE_ENABLE_Pos;
cho45 23:b31957ce64e9 305
cho45 23:b31957ce64e9 306 bool queue = false;
cho45 23:b31957ce64e9 307
cho45 23:b31957ce64e9 308 for (int col = 0; col < COLS; col++) {
cho45 23:b31957ce64e9 309 uint8_t changed = keysPrev[col] ^ keysCurr[col];
cho45 23:b31957ce64e9 310 if (changed) queue = true;
cho45 23:b31957ce64e9 311 for (int row = 0; row < ROWS; row++) {
cho45 23:b31957ce64e9 312 if (changed & (1<<row)) {
cho45 23:b31957ce64e9 313 bool pressed = keysCurr[col] & (1<<row);
cho45 23:b31957ce64e9 314 // printf("changed: col=%d, row=%d / pressed=%d\r\n", col, row, pressed);
cho45 23:b31957ce64e9 315 keymap.execute(col, row, pressed);
cho45 23:b31957ce64e9 316 }
cho45 7:b9270a37345b 317 }
cho45 7:b9270a37345b 318 }
cho45 23:b31957ce64e9 319 state = !state;
cho45 23:b31957ce64e9 320
cho45 23:b31957ce64e9 321
cho45 23:b31957ce64e9 322 if (queue) HIDController::queueCurrentReportData();
cho45 23:b31957ce64e9 323 wait_ms(5);
cho45 7:b9270a37345b 324 }
cho45 8:d684faf04c9a 325 } else {
cho45 13:b0ffdf2012b9 326 printf("wait for events...\r\n");
cho45 16:345eebc4f259 327
cho45 21:d801c32231b0 328 /*// save 50uA
cho45 16:345eebc4f259 329 while (NRF_UART0->EVENTS_TXDRDY != 1);
cho45 16:345eebc4f259 330
cho45 16:345eebc4f259 331 uint32_t tx = NRF_UART0->PSELTXD;
cho45 16:345eebc4f259 332
cho45 14:3a8c126b7834 333 NRF_UART0->TASKS_STOPTX = 1;
cho45 14:3a8c126b7834 334 NRF_UART0->ENABLE = (UART_ENABLE_ENABLE_Disabled << UART_ENABLE_ENABLE_Pos);
cho45 21:d801c32231b0 335 /**/
cho45 23:b31957ce64e9 336
cho45 23:b31957ce64e9 337
cho45 10:1aed2481a743 338 HIDController::waitForEvent();
cho45 16:345eebc4f259 339
cho45 23:b31957ce64e9 340
cho45 21:d801c32231b0 341 /*/
cho45 14:3a8c126b7834 342 NRF_UART0->ENABLE = (UART_ENABLE_ENABLE_Enabled << UART_ENABLE_ENABLE_Pos);
cho45 14:3a8c126b7834 343 NRF_UART0->TASKS_STARTTX = 1;
cho45 16:345eebc4f259 344 NRF_UART0->PSELTXD = 0xFFFFFFFF;
cho45 16:345eebc4f259 345 NRF_UART0->EVENTS_TXDRDY = 0;
cho45 16:345eebc4f259 346 NRF_UART0->TXD = 0;
cho45 16:345eebc4f259 347 while (NRF_UART0->EVENTS_TXDRDY != 1);
cho45 16:345eebc4f259 348 NRF_UART0->PSELTXD = tx;
cho45 21:d801c32231b0 349 /**/
cho45 7:b9270a37345b 350 }
cho45 2:c2e3f240640c 351 }
cho45 2:c2e3f240640c 352 }