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Dependencies:   BLE_API mbed-dev nRF51822

main.cpp@37:4ce71fa47fc3, 2016-08-26 (annotated)

Committer:
cho45
Date:
Fri Aug 26 00:22:05 2016 +0000
Revision:
37:4ce71fa47fc3
Parent:
36:78c211da4eb0
Child:
38:115875b8cb6c
?????????????(?????)

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 30:f9ebc769118d 17 #include <cmath>
cho45 0:be89b5fdea09 18 #include "mbed.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 30:f9ebc769118d 131 // __attribute__((used, long_call, section(".data")))
cho45 5:65d4e94735b6 132 void scanKeyboard(uint8_t* keys) {
cho45 5:65d4e94735b6 133 int ok;
cho45 13:b0ffdf2012b9 134
cho45 13:b0ffdf2012b9 135 disableInterrupt();
cho45 5:65d4e94735b6 136
cho45 13:b0ffdf2012b9 137 if (gpio1_ready) {
cho45 13:b0ffdf2012b9 138 for (int i = 0; i < 8; i++) {
cho45 13:b0ffdf2012b9 139 ok = gpio1.write8(
cho45 13:b0ffdf2012b9 140 MCP23017::GPIOA,
cho45 13:b0ffdf2012b9 141 ~(1<<i)
cho45 13:b0ffdf2012b9 142 );
cho45 33:6a2301a89e92 143 wait_us(1);
cho45 13:b0ffdf2012b9 144 keys[i] = gpio1.read8(MCP23017::GPIOB, ok);
cho45 13:b0ffdf2012b9 145 }
cho45 13:b0ffdf2012b9 146
cho45 13:b0ffdf2012b9 147 // set all output to negative for interrupt
cho45 5:65d4e94735b6 148 ok = gpio1.write8(
cho45 5:65d4e94735b6 149 MCP23017::GPIOA,
cho45 13:b0ffdf2012b9 150 0b00000000
cho45 5:65d4e94735b6 151 );
cho45 4:54cb552e50c4 152 }
cho45 2:c2e3f240640c 153
cho45 5:65d4e94735b6 154
cho45 13:b0ffdf2012b9 155 if (gpio2_ready) {
cho45 13:b0ffdf2012b9 156 for (int i = 0; i < 8; i++) {
cho45 13:b0ffdf2012b9 157 ok = gpio2.write8(
cho45 13:b0ffdf2012b9 158 MCP23017::GPIOA,
cho45 13:b0ffdf2012b9 159 ~(1<<i)
cho45 13:b0ffdf2012b9 160 );
cho45 33:6a2301a89e92 161 wait_us(1);
cho45 13:b0ffdf2012b9 162 keys[i+8] = gpio2.read8(MCP23017::GPIOB, ok);
cho45 13:b0ffdf2012b9 163 }
cho45 13:b0ffdf2012b9 164
cho45 13:b0ffdf2012b9 165 // set all output to negative for interrupt
cho45 13:b0ffdf2012b9 166 ok = gpio2.write8(
cho45 13:b0ffdf2012b9 167 MCP23017::GPIOA,
cho45 13:b0ffdf2012b9 168 0b00000000
cho45 13:b0ffdf2012b9 169 );
cho45 13:b0ffdf2012b9 170 }
cho45 13:b0ffdf2012b9 171
cho45 13:b0ffdf2012b9 172 enableInterrupt();
cho45 7:b9270a37345b 173 }
cho45 13:b0ffdf2012b9 174
cho45 7:b9270a37345b 175 void disableInterrupt() {
cho45 7:b9270a37345b 176 int ok;
cho45 13:b0ffdf2012b9 177 if (gpio1_ready) {
cho45 13:b0ffdf2012b9 178 // Disable interrupt
cho45 13:b0ffdf2012b9 179 ok = gpio1.write8(
cho45 13:b0ffdf2012b9 180 MCP23017::GPINTENB,
cho45 13:b0ffdf2012b9 181 0b00000000
cho45 13:b0ffdf2012b9 182 );
cho45 13:b0ffdf2012b9 183 }
cho45 13:b0ffdf2012b9 184
cho45 13:b0ffdf2012b9 185 if (gpio2_ready) {
cho45 13:b0ffdf2012b9 186 // Disable interrupt
cho45 13:b0ffdf2012b9 187 ok = gpio2.write8(
cho45 13:b0ffdf2012b9 188 MCP23017::GPINTENB,
cho45 13:b0ffdf2012b9 189 0b00000000
cho45 13:b0ffdf2012b9 190 );
cho45 13:b0ffdf2012b9 191 }
cho45 33:6a2301a89e92 192
cho45 7:b9270a37345b 193 }
cho45 7:b9270a37345b 194
cho45 7:b9270a37345b 195 void enableInterrupt() {
cho45 7:b9270a37345b 196 int ok;
cho45 13:b0ffdf2012b9 197 if (gpio1_ready) {
cho45 13:b0ffdf2012b9 198 // Enable interrupt
cho45 13:b0ffdf2012b9 199 ok = gpio1.write8(
cho45 13:b0ffdf2012b9 200 MCP23017::GPINTENB,
cho45 13:b0ffdf2012b9 201 0b11111111
cho45 13:b0ffdf2012b9 202 );
cho45 13:b0ffdf2012b9 203 }
cho45 13:b0ffdf2012b9 204
cho45 13:b0ffdf2012b9 205 if (gpio2_ready) {
cho45 13:b0ffdf2012b9 206 // Enable interrupt
cho45 13:b0ffdf2012b9 207 ok = gpio2.write8(
cho45 13:b0ffdf2012b9 208 MCP23017::GPINTENB,
cho45 13:b0ffdf2012b9 209 0b11111111
cho45 13:b0ffdf2012b9 210 );
cho45 13:b0ffdf2012b9 211 }
cho45 5:65d4e94735b6 212
cho45 5:65d4e94735b6 213 // Clear interrupt
cho45 13:b0ffdf2012b9 214 // gpio1.read8(MCP23017::GPIOB, ok);
cho45 4:54cb552e50c4 215 }
cho45 5:65d4e94735b6 216 };
cho45 4:54cb552e50c4 217
cho45 5:65d4e94735b6 218 I2C i2c(I2C_SDA0, I2C_SCL0);
cho45 16:345eebc4f259 219 // Serial serial(USBTX, USBRX);
cho45 5:65d4e94735b6 220 KeyboardMatrixController keyboardMatrixController(i2c);
cho45 6:f1c3ea8bc850 221 Keymap keymap;
cho45 15:70bf079d3ee1 222
cho45 15:70bf079d3ee1 223 // Interrupt from MCP23017
cho45 15:70bf079d3ee1 224 // (pulled-up and two MCP23017 is configured with open drain INT)
cho45 5:65d4e94735b6 225 InterruptIn buttonInt(P0_5);
cho45 5:65d4e94735b6 226
cho45 37:4ce71fa47fc3 227 #define PIN_STATUS_LED P0_4
cho45 37:4ce71fa47fc3 228 DigitalOut statusLed(PIN_STATUS_LED, 0);
cho45 25:094df0d9e95b 229
cho45 15:70bf079d3ee1 230 // Unsed pins. Set to output for power consumption
cho45 35:6a7fddfa14cf 231
cho45 35:6a7fddfa14cf 232 // Pad pinout
cho45 35:6a7fddfa14cf 233 /*
cho45 20:d8840ac38434 234 DigitalIn unused_p0_7(P0_7, PullUp);
cho45 20:d8840ac38434 235 DigitalIn unused_p0_6(P0_6, PullUp);
cho45 20:d8840ac38434 236 DigitalIn unused_p0_15(P0_15, PullUp);
cho45 20:d8840ac38434 237 DigitalIn unused_p0_29(P0_29, PullUp);
cho45 20:d8840ac38434 238 DigitalIn unused_p0_28(P0_28, PullUp);
cho45 35:6a7fddfa14cf 239 */
cho45 35:6a7fddfa14cf 240
cho45 20:d8840ac38434 241 DigitalIn unused_p0_19(P0_19, PullUp); // This is on board LED which connected to VDD
cho45 22:a78f0a91280a 242 DigitalIn unused_p0_11(P0_11, PullUp); // RXD
cho45 15:70bf079d3ee1 243
cho45 35:6a7fddfa14cf 244 Timeout timeout;
cho45 35:6a7fddfa14cf 245
cho45 5:65d4e94735b6 246 // ROWS=8
cho45 5:65d4e94735b6 247 // COLS=16
cho45 5:65d4e94735b6 248 // 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 249 static uint8_t keysA[COLS];
cho45 5:65d4e94735b6 250 static uint8_t keysB[COLS];
cho45 5:65d4e94735b6 251 static bool state = 0;
cho45 28:1f843a3daab0 252 #define is_pressed(keys, row, col) (!!(keys[col] & (1<<row)))
cho45 28:1f843a3daab0 253
cho45 9:d1daefbf1fbd 254 // delay for interrupt
cho45 23:b31957ce64e9 255 static volatile int8_t pollCount = 50;
cho45 5:65d4e94735b6 256
cho45 5:65d4e94735b6 257 void buttonIntCallback() {
cho45 8:d684faf04c9a 258 // just for wakeup
cho45 33:6a2301a89e92 259 pollCount = 25;
cho45 2:c2e3f240640c 260 }
cho45 2:c2e3f240640c 261
cho45 23:b31957ce64e9 262 void powerOff() {
cho45 23:b31957ce64e9 263 printf("power off\r\n");
cho45 23:b31957ce64e9 264 NRF_POWER->SYSTEMOFF = 1;
cho45 23:b31957ce64e9 265 }
cho45 23:b31957ce64e9 266
cho45 26:78ee13f69ec3 267 void tickerStatus() {
cho45 28:1f843a3daab0 268 statusLed = !statusLed;
cho45 26:78ee13f69ec3 269 }
cho45 26:78ee13f69ec3 270
cho45 35:6a7fddfa14cf 271 static bool updateStatudLedEnabled = false;
cho45 35:6a7fddfa14cf 272 void updateStatusLed() {
cho45 35:6a7fddfa14cf 273 switch (HIDController::status()) {
cho45 35:6a7fddfa14cf 274 case TIMEOUT:
cho45 35:6a7fddfa14cf 275 case DISCONNECTED: timeout.attach(updateStatusLed, statusLed ? 3 : 0.1); break;
cho45 35:6a7fddfa14cf 276 case ADVERTISING:
cho45 35:6a7fddfa14cf 277 case CONNECTING: timeout.attach(updateStatusLed, statusLed ? 0.5 : 0.1); break;
cho45 35:6a7fddfa14cf 278 case CONNECTED: statusLed = 0; updateStatudLedEnabled = false; return;
cho45 35:6a7fddfa14cf 279 }
cho45 35:6a7fddfa14cf 280 statusLed = !statusLed;
cho45 35:6a7fddfa14cf 281 updateStatudLedEnabled = true;
cho45 35:6a7fddfa14cf 282 }
cho45 35:6a7fddfa14cf 283
cho45 36:78c211da4eb0 284 static volatile bool keyIntervalInterrupt = false;
cho45 36:78c211da4eb0 285 void wakeupKeyIntervalSleep() {
cho45 36:78c211da4eb0 286 keyIntervalInterrupt = true;
cho45 30:f9ebc769118d 287 }
cho45 30:f9ebc769118d 288
cho45 32:6c0f43fda460 289 class WatchDog {
cho45 32:6c0f43fda460 290 static const uint32_t RELOAD_VALUE = 0x6E524635;
cho45 33:6a2301a89e92 291 static const uint8_t WDT_TIMEOUT = 5; // sec
cho45 32:6c0f43fda460 292 public:
cho45 32:6c0f43fda460 293 static void init() {
cho45 32:6c0f43fda460 294 // timeout [s] = (CRV + 1) / 32768;
cho45 32:6c0f43fda460 295 // crv = 32768 * timeout - 1
cho45 32:6c0f43fda460 296 NRF_WDT->CRV = 32768 * WDT_TIMEOUT - 1;
cho45 32:6c0f43fda460 297 NRF_WDT->RREN = WDT_RREN_RR0_Enabled << WDT_RREN_RR0_Pos;
cho45 32:6c0f43fda460 298 NRF_WDT->CONFIG = WDT_CONFIG_SLEEP_Pause << WDT_CONFIG_SLEEP_Pos;
cho45 32:6c0f43fda460 299 NRF_WDT->TASKS_START = 1;
cho45 32:6c0f43fda460 300 }
cho45 32:6c0f43fda460 301
cho45 32:6c0f43fda460 302 static void reload() {
cho45 32:6c0f43fda460 303 NRF_WDT->RR[0] = RELOAD_VALUE;
cho45 32:6c0f43fda460 304 }
cho45 35:6a7fddfa14cf 305
cho45 32:6c0f43fda460 306 };
cho45 28:1f843a3daab0 307
cho45 37:4ce71fa47fc3 308 class Battery {
cho45 37:4ce71fa47fc3 309
cho45 37:4ce71fa47fc3 310 public:
cho45 37:4ce71fa47fc3 311 static const float BATTERY_MAX = 2.4;
cho45 37:4ce71fa47fc3 312 static const float REFERNECE = 1.2;
cho45 37:4ce71fa47fc3 313 static const float PRESCALE = 3;
cho45 37:4ce71fa47fc3 314 static const float BATTERY_LOW = 2.0;
cho45 37:4ce71fa47fc3 315
cho45 37:4ce71fa47fc3 316 static uint8_t readBatteryPercentage(float voltage) {
cho45 37:4ce71fa47fc3 317 uint16_t percentage = (voltage - BATTERY_LOW) / (BATTERY_MAX - BATTERY_LOW) * 100;
cho45 37:4ce71fa47fc3 318 if (percentage > 100) percentage = 100;
cho45 37:4ce71fa47fc3 319 return percentage;
cho45 37:4ce71fa47fc3 320 }
cho45 37:4ce71fa47fc3 321
cho45 37:4ce71fa47fc3 322 static float readBatteryVoltage() {
cho45 37:4ce71fa47fc3 323 NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled;
cho45 37:4ce71fa47fc3 324
cho45 37:4ce71fa47fc3 325 // Use internal 1.2V reference for batteryInput
cho45 37:4ce71fa47fc3 326 // 1/3 pre-scaled input and 1.2V internal band gap reference
cho45 37:4ce71fa47fc3 327 // ref. mbed-src/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/analogin_api.c
cho45 37:4ce71fa47fc3 328 NRF_ADC->CONFIG =
cho45 37:4ce71fa47fc3 329 (ADC_CONFIG_RES_10bit << ADC_CONFIG_RES_Pos) |
cho45 37:4ce71fa47fc3 330 // Use VDD 1/3 for input
cho45 37:4ce71fa47fc3 331 (ADC_CONFIG_INPSEL_SupplyOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
cho45 37:4ce71fa47fc3 332 // Use internal band gap for reference
cho45 37:4ce71fa47fc3 333 (ADC_CONFIG_REFSEL_VBG << ADC_CONFIG_REFSEL_Pos) |
cho45 37:4ce71fa47fc3 334 (ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos);
cho45 37:4ce71fa47fc3 335
cho45 37:4ce71fa47fc3 336 // Start ADC
cho45 37:4ce71fa47fc3 337 NRF_ADC->TASKS_START = 1;
cho45 37:4ce71fa47fc3 338 while (((NRF_ADC->BUSY & ADC_BUSY_BUSY_Msk) >> ADC_BUSY_BUSY_Pos) == ADC_BUSY_BUSY_Busy) {
cho45 37:4ce71fa47fc3 339 // busy loop
cho45 37:4ce71fa47fc3 340 }
cho45 37:4ce71fa47fc3 341
cho45 37:4ce71fa47fc3 342 // Read ADC result
cho45 37:4ce71fa47fc3 343 uint16_t raw10bit = static_cast<uint16_t>(NRF_ADC->RESULT);
cho45 37:4ce71fa47fc3 344
cho45 37:4ce71fa47fc3 345 NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Disabled;
cho45 37:4ce71fa47fc3 346
cho45 37:4ce71fa47fc3 347 float ratio = raw10bit / static_cast<float>(1<<10);
cho45 37:4ce71fa47fc3 348
cho45 37:4ce71fa47fc3 349 float batteryVoltage = ratio * (REFERNECE * PRESCALE);
cho45 37:4ce71fa47fc3 350 return batteryVoltage;
cho45 37:4ce71fa47fc3 351 }
cho45 37:4ce71fa47fc3 352 };
cho45 37:4ce71fa47fc3 353
cho45 35:6a7fddfa14cf 354
cho45 0:be89b5fdea09 355 int main(void) {
cho45 33:6a2301a89e92 356 {
cho45 33:6a2301a89e92 357 uint32_t reason = NRF_POWER->RESETREAS;
cho45 33:6a2301a89e92 358 NRF_POWER->RESETREAS = 0xffffffff; // clear reason
cho45 33:6a2301a89e92 359 printf("init [%x]\r\n", reason);
cho45 33:6a2301a89e92 360 }
cho45 37:4ce71fa47fc3 361
cho45 37:4ce71fa47fc3 362 float battery = Battery::readBatteryVoltage();
cho45 37:4ce71fa47fc3 363 if (battery < Battery::BATTERY_LOW) {
cho45 37:4ce71fa47fc3 364 powerOff();
cho45 37:4ce71fa47fc3 365 }
cho45 35:6a7fddfa14cf 366
cho45 30:f9ebc769118d 367 // Enable Pin-reset on DEBUG mode
cho45 30:f9ebc769118d 368 // This makes possiable booting without normal mode easily.
cho45 30:f9ebc769118d 369 NRF_POWER->RESET = 1;
cho45 30:f9ebc769118d 370 // Disable Internal DC/DC step down converter surely
cho45 29:ec548c473d50 371 NRF_POWER->DCDCEN = 0;
cho45 30:f9ebc769118d 372 // Enable 2.1V brown out detection for avoiding over discharge of NiMH
cho45 29:ec548c473d50 373 NRF_POWER->POFCON =
cho45 29:ec548c473d50 374 POWER_POFCON_POF_Enabled << POWER_POFCON_POF_Pos |
cho45 29:ec548c473d50 375 POWER_POFCON_THRESHOLD_V21 << POWER_POFCON_THRESHOLD_Pos;
cho45 29:ec548c473d50 376
cho45 4:54cb552e50c4 377 // mbed's Serial of TARGET_RBLAB_BLENANO sucks
cho45 30:f9ebc769118d 378 // DO NOT CONNECT RTS/CTS WITHOUT PRIOR CONSENT!
cho45 4:54cb552e50c4 379 NRF_UART0->PSELRTS = 0xFFFFFFFFUL;
cho45 4:54cb552e50c4 380 NRF_UART0->PSELCTS = 0xFFFFFFFFUL;
cho45 37:4ce71fa47fc3 381
cho45 37:4ce71fa47fc3 382 // Set LED Pin as HIGH Current mode
cho45 37:4ce71fa47fc3 383 NRF_GPIO->PIN_CNF[PIN_STATUS_LED] =
cho45 37:4ce71fa47fc3 384 (NRF_GPIO->PIN_CNF[PIN_STATUS_LED] & GPIO_PIN_CNF_DRIVE_Msk) |
cho45 37:4ce71fa47fc3 385 (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos);
cho45 16:345eebc4f259 386
cho45 32:6c0f43fda460 387 WatchDog::init();
cho45 31:010a44d53627 388
cho45 4:54cb552e50c4 389 // 100kHz
cho45 36:78c211da4eb0 390 i2c.frequency(250000);
cho45 4:54cb552e50c4 391
cho45 5:65d4e94735b6 392 buttonInt.mode(PullUp);
cho45 5:65d4e94735b6 393 buttonInt.fall(buttonIntCallback);
cho45 4:54cb552e50c4 394
cho45 5:65d4e94735b6 395 keyboardMatrixController.init();
cho45 33:6a2301a89e92 396 pollCount = 10;
cho45 4:54cb552e50c4 397
cho45 6:f1c3ea8bc850 398 HIDController::init();
cho45 16:345eebc4f259 399
cho45 16:345eebc4f259 400 // STOP UART RX for power consumption
cho45 21:d801c32231b0 401 NRF_UART0->TASKS_STOPRX = 1;
cho45 16:345eebc4f259 402
cho45 30:f9ebc769118d 403 // Disable TWI by default.
cho45 16:345eebc4f259 404 NRF_TWI0->ENABLE = TWI_ENABLE_ENABLE_Disabled << TWI_ENABLE_ENABLE_Pos;
cho45 35:6a7fddfa14cf 405
cho45 32:6c0f43fda460 406 while (1) {
cho45 32:6c0f43fda460 407 WatchDog::reload();
cho45 35:6a7fddfa14cf 408
cho45 23:b31957ce64e9 409 if (pollCount > 0) {
cho45 23:b31957ce64e9 410 printf("scan keys\r\n");
cho45 31:010a44d53627 411
cho45 33:6a2301a89e92 412 while (pollCount-- > 0) {
cho45 33:6a2301a89e92 413 WatchDog::reload();
cho45 33:6a2301a89e92 414
cho45 23:b31957ce64e9 415 uint8_t (&keysCurr)[COLS] = state ? keysA : keysB;
cho45 23:b31957ce64e9 416 uint8_t (&keysPrev)[COLS] = state ? keysB : keysA;
cho45 23:b31957ce64e9 417
cho45 23:b31957ce64e9 418 NRF_TWI0->ENABLE = TWI_ENABLE_ENABLE_Enabled << TWI_ENABLE_ENABLE_Pos;
cho45 23:b31957ce64e9 419 keyboardMatrixController.scanKeyboard(keysCurr);
cho45 23:b31957ce64e9 420 NRF_TWI0->ENABLE = TWI_ENABLE_ENABLE_Disabled << TWI_ENABLE_ENABLE_Pos;
cho45 23:b31957ce64e9 421
cho45 23:b31957ce64e9 422 bool queue = false;
cho45 23:b31957ce64e9 423
cho45 23:b31957ce64e9 424 for (int col = 0; col < COLS; col++) {
cho45 23:b31957ce64e9 425 uint8_t changed = keysPrev[col] ^ keysCurr[col];
cho45 23:b31957ce64e9 426 if (changed) queue = true;
cho45 23:b31957ce64e9 427 for (int row = 0; row < ROWS; row++) {
cho45 23:b31957ce64e9 428 if (changed & (1<<row)) {
cho45 23:b31957ce64e9 429 bool pressed = keysCurr[col] & (1<<row);
cho45 23:b31957ce64e9 430 // printf("changed: col=%d, row=%d / pressed=%d\r\n", col, row, pressed);
cho45 23:b31957ce64e9 431 keymap.execute(col, row, pressed);
cho45 23:b31957ce64e9 432 }
cho45 7:b9270a37345b 433 }
cho45 7:b9270a37345b 434 }
cho45 23:b31957ce64e9 435 state = !state;
cho45 35:6a7fddfa14cf 436
cho45 35:6a7fddfa14cf 437
cho45 23:b31957ce64e9 438 if (queue) HIDController::queueCurrentReportData();
cho45 30:f9ebc769118d 439
cho45 31:010a44d53627 440 // wait_ms(5); is busy loop
cho45 31:010a44d53627 441 // use timer1 to use wait 5ms
cho45 36:78c211da4eb0 442 timeout.attach_us(wakeupKeyIntervalSleep, 5000);
cho45 36:78c211da4eb0 443 keyIntervalInterrupt = false;
cho45 36:78c211da4eb0 444 while (!keyIntervalInterrupt) sleep();
cho45 7:b9270a37345b 445 }
cho45 8:d684faf04c9a 446 } else {
cho45 35:6a7fddfa14cf 447 if (!updateStatudLedEnabled) updateStatusLed();
cho45 37:4ce71fa47fc3 448
cho45 37:4ce71fa47fc3 449 float batteryVoltage = Battery::readBatteryVoltage();
cho45 37:4ce71fa47fc3 450 uint8_t batteryPercentage = Battery::readBatteryPercentage(batteryVoltage);
cho45 37:4ce71fa47fc3 451 bool isLowBattery = batteryVoltage < Battery::BATTERY_LOW;
cho45 37:4ce71fa47fc3 452
cho45 37:4ce71fa47fc3 453 printf("%f.2V : %d/100 [%d:%s] %s\r\n",
cho45 37:4ce71fa47fc3 454 batteryVoltage,
cho45 37:4ce71fa47fc3 455 batteryPercentage,
cho45 37:4ce71fa47fc3 456 HIDController::status(),
cho45 37:4ce71fa47fc3 457 HIDController::statusString(),
cho45 37:4ce71fa47fc3 458 isLowBattery ? "low battery" : "waitForEvent"
cho45 37:4ce71fa47fc3 459 );
cho45 37:4ce71fa47fc3 460
cho45 37:4ce71fa47fc3 461 HIDController::updateBatteryLevel(batteryPercentage);
cho45 37:4ce71fa47fc3 462
cho45 37:4ce71fa47fc3 463 if (isLowBattery) {
cho45 37:4ce71fa47fc3 464 powerOff();
cho45 37:4ce71fa47fc3 465 }
cho45 29:ec548c473d50 466
cho45 30:f9ebc769118d 467 // allow printf in some interrupts while connecting
cho45 29:ec548c473d50 468 if (HIDController::connected()) {
cho45 30:f9ebc769118d 469 // disable internal HFCLK RC Clock surely. It consume 1mA constantly
cho45 30:f9ebc769118d 470 // TWI / SPI / UART must be disabled and boot without debug mode
cho45 29:ec548c473d50 471 while (NRF_UART0->EVENTS_TXDRDY != 1);
cho45 29:ec548c473d50 472
cho45 29:ec548c473d50 473 uint32_t tx = NRF_UART0->PSELTXD;
cho45 29:ec548c473d50 474
cho45 29:ec548c473d50 475 NRF_UART0->TASKS_STOPTX = 1;
cho45 29:ec548c473d50 476 NRF_UART0->ENABLE = (UART_ENABLE_ENABLE_Disabled << UART_ENABLE_ENABLE_Pos);
cho45 29:ec548c473d50 477
cho45 29:ec548c473d50 478 HIDController::waitForEvent();
cho45 29:ec548c473d50 479
cho45 29:ec548c473d50 480 NRF_UART0->ENABLE = (UART_ENABLE_ENABLE_Enabled << UART_ENABLE_ENABLE_Pos);
cho45 29:ec548c473d50 481 NRF_UART0->TASKS_STARTTX = 1;
cho45 30:f9ebc769118d 482 // dummy send to wakeup...
cho45 29:ec548c473d50 483 NRF_UART0->PSELTXD = 0xFFFFFFFF;
cho45 29:ec548c473d50 484 NRF_UART0->EVENTS_TXDRDY = 0;
cho45 29:ec548c473d50 485 NRF_UART0->TXD = 0;
cho45 29:ec548c473d50 486 while (NRF_UART0->EVENTS_TXDRDY != 1);
cho45 29:ec548c473d50 487 NRF_UART0->PSELTXD = tx;
cho45 29:ec548c473d50 488 } else {
cho45 29:ec548c473d50 489 HIDController::waitForEvent();
cho45 29:ec548c473d50 490 }
cho45 7:b9270a37345b 491 }
cho45 2:c2e3f240640c 492 }
cho45 31:010a44d53627 493 }