Hiroh Satoh / keyboard Featured

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   BLE_API mbed-dev nRF51822

main.cpp@68:13e2343452d5, 2016-09-02 (annotated)

Committer:
cho45
Date:
Fri Sep 02 07:41:33 2016 +0900
Revision:
68:13e2343452d5
Parent:
60:b899414e1d34
Child:
69:9d6ecd584a0c
battery ?????????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cho45 42:2c3be8694896 1 /* BLE Keyboard Implementation for mbed
cho45 42:2c3be8694896 2 * Copyright (c) 2016 cho45 <cho45@lowreal.net>
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 42:2c3be8694896 21 #include "KeyboardMatrixController.h"
cho45 42:2c3be8694896 22 #include "BatteryLevel.h"
cho45 42:2c3be8694896 23 #include "WatchDog.h"
cho45 4:54cb552e50c4 24
cho45 42:2c3be8694896 25 #include "keymap.h"
cho45 42:2c3be8694896 26 #include "config.h"
cho45 5:65d4e94735b6 27
cho45 42:2c3be8694896 28 RawSerial serial(USBTX, USBRX);
cho45 48:d6938de02f62 29
cho45 48:d6938de02f62 30 static I2C i2c(I2C_SDA0, I2C_SCL0);
cho45 48:d6938de02f62 31 static KeyboardMatrixController keyboardMatrixController(i2c);
cho45 48:d6938de02f62 32 static Keymap keymap;
cho45 15:70bf079d3ee1 33
cho45 15:70bf079d3ee1 34 // Interrupt from MCP23017
cho45 15:70bf079d3ee1 35 // (pulled-up and two MCP23017 is configured with open drain INT)
cho45 48:d6938de02f62 36 static InterruptIn keyboardInterruptIn(P0_5);
cho45 5:65d4e94735b6 37
cho45 37:4ce71fa47fc3 38 #define PIN_STATUS_LED P0_4
cho45 48:d6938de02f62 39 static DigitalOut statusLed(PIN_STATUS_LED, 0);
cho45 25:094df0d9e95b 40
cho45 43:4de3870b39cb 41 // timeout for status led and wakeup from sleep
cho45 48:d6938de02f62 42 static Timeout timeout;
cho45 35:6a7fddfa14cf 43
cho45 5:65d4e94735b6 44 // ROWS=8
cho45 5:65d4e94735b6 45 // COLS=16
cho45 5:65d4e94735b6 46 // 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 47 static uint8_t keysA[COLS];
cho45 5:65d4e94735b6 48 static uint8_t keysB[COLS];
cho45 5:65d4e94735b6 49 static bool state = 0;
cho45 28:1f843a3daab0 50 #define is_pressed(keys, row, col) (!!(keys[col] & (1<<row)))
cho45 28:1f843a3daab0 51
cho45 9:d1daefbf1fbd 52 // delay for interrupt
cho45 23:b31957ce64e9 53 static volatile int8_t pollCount = 50;
cho45 5:65d4e94735b6 54
cho45 48:d6938de02f62 55 static void keyboardInterrupt() {
cho45 8:d684faf04c9a 56 // just for wakeup
cho45 33:6a2301a89e92 57 pollCount = 25;
cho45 2:c2e3f240640c 58 }
cho45 2:c2e3f240640c 59
cho45 48:d6938de02f62 60 static void powerOff() {
cho45 42:2c3be8694896 61 DEBUG_PRINTF("power off\r\n");
cho45 23:b31957ce64e9 62 NRF_POWER->SYSTEMOFF = 1;
cho45 23:b31957ce64e9 63 }
cho45 23:b31957ce64e9 64
cho45 35:6a7fddfa14cf 65 static bool updateStatudLedEnabled = false;
cho45 48:d6938de02f62 66 static void updateStatusLed() {
cho45 35:6a7fddfa14cf 67 switch (HIDController::status()) {
cho45 35:6a7fddfa14cf 68 case TIMEOUT:
cho45 38:115875b8cb6c 69 case DISCONNECTED:
cho45 38:115875b8cb6c 70 case CONNECTED:
cho45 38:115875b8cb6c 71 statusLed = 0;
cho45 38:115875b8cb6c 72 updateStatudLedEnabled = false;
cho45 38:115875b8cb6c 73 return;
cho45 35:6a7fddfa14cf 74 case ADVERTISING:
cho45 38:115875b8cb6c 75 case CONNECTING:
cho45 38:115875b8cb6c 76 statusLed = !statusLed;
cho45 38:115875b8cb6c 77 updateStatudLedEnabled = true;
cho45 49:09ae6fb04a32 78 timeout.attach(updateStatusLed, statusLed ? 0.1 : 0.5);
cho45 38:115875b8cb6c 79 break;
cho45 35:6a7fddfa14cf 80 }
cho45 35:6a7fddfa14cf 81 }
cho45 35:6a7fddfa14cf 82
cho45 36:78c211da4eb0 83 static volatile bool keyIntervalInterrupt = false;
cho45 48:d6938de02f62 84 static void wakeupKeyIntervalSleep() {
cho45 36:78c211da4eb0 85 keyIntervalInterrupt = true;
cho45 30:f9ebc769118d 86 }
cho45 30:f9ebc769118d 87
cho45 0:be89b5fdea09 88 int main(void) {
cho45 33:6a2301a89e92 89 {
cho45 48:d6938de02f62 90 const uint32_t reason = NRF_POWER->RESETREAS;
cho45 33:6a2301a89e92 91 NRF_POWER->RESETREAS = 0xffffffff; // clear reason
cho45 43:4de3870b39cb 92 // reset cause should be shown everytime
cho45 60:b899414e1d34 93 serial.printf("init [%x] sp:%x\r\n", reason, GET_SP());
cho45 33:6a2301a89e92 94 }
cho45 43:4de3870b39cb 95
cho45 49:09ae6fb04a32 96 {
cho45 49:09ae6fb04a32 97 const float battery = BatteryLevel::readBatteryVoltage();
cho45 49:09ae6fb04a32 98 if (battery < BatteryLevel::BATTERY_LOW) {
cho45 49:09ae6fb04a32 99 powerOff();
cho45 49:09ae6fb04a32 100 }
cho45 37:4ce71fa47fc3 101 }
cho45 43:4de3870b39cb 102
cho45 30:f9ebc769118d 103 // Enable Pin-reset on DEBUG mode
cho45 30:f9ebc769118d 104 // This makes possiable booting without normal mode easily.
cho45 30:f9ebc769118d 105 NRF_POWER->RESET = 1;
cho45 30:f9ebc769118d 106 // Disable Internal DC/DC step down converter surely
cho45 29:ec548c473d50 107 NRF_POWER->DCDCEN = 0;
cho45 43:4de3870b39cb 108
cho45 4:54cb552e50c4 109 // mbed's Serial of TARGET_RBLAB_BLENANO sucks
cho45 30:f9ebc769118d 110 // DO NOT CONNECT RTS/CTS WITHOUT PRIOR CONSENT!
cho45 4:54cb552e50c4 111 NRF_UART0->PSELRTS = 0xFFFFFFFFUL;
cho45 4:54cb552e50c4 112 NRF_UART0->PSELCTS = 0xFFFFFFFFUL;
cho45 43:4de3870b39cb 113
cho45 37:4ce71fa47fc3 114 // Set LED Pin as HIGH Current mode
cho45 37:4ce71fa47fc3 115 NRF_GPIO->PIN_CNF[PIN_STATUS_LED] =
cho45 41:2b034f22b98f 116 (NRF_GPIO->PIN_CNF[PIN_STATUS_LED] & ~GPIO_PIN_CNF_DRIVE_Msk) |
cho45 41:2b034f22b98f 117 (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos);
cho45 16:345eebc4f259 118
cho45 42:2c3be8694896 119 // Unsed pins.
cho45 42:2c3be8694896 120 // Set as PullUp for power consumption
cho45 42:2c3be8694896 121 // Use GPIO registers directly for saving ram
cho45 42:2c3be8694896 122 // Pad pinouts
cho45 42:2c3be8694896 123 /*
cho45 42:2c3be8694896 124 DigitalIn unused_p0_7(P0_7, PullUp);
cho45 42:2c3be8694896 125 DigitalIn unused_p0_6(P0_6, PullUp);
cho45 42:2c3be8694896 126 DigitalIn unused_p0_15(P0_15, PullUp);
cho45 42:2c3be8694896 127 DigitalIn unused_p0_29(P0_29, PullUp);
cho45 42:2c3be8694896 128 DigitalIn unused_p0_28(P0_28, PullUp);
cho45 42:2c3be8694896 129 */
cho45 42:2c3be8694896 130 NRF_GPIO->PIN_CNF[P0_7] =
cho45 42:2c3be8694896 131 (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
cho45 42:2c3be8694896 132 (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
cho45 42:2c3be8694896 133 (GPIO_PIN_CNF_PULL_Pullup << GPIO_PIN_CNF_PULL_Pos) |
cho45 42:2c3be8694896 134 (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
cho45 42:2c3be8694896 135 (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
cho45 42:2c3be8694896 136 NRF_GPIO->PIN_CNF[P0_6] =
cho45 42:2c3be8694896 137 (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
cho45 42:2c3be8694896 138 (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
cho45 42:2c3be8694896 139 (GPIO_PIN_CNF_PULL_Pullup << GPIO_PIN_CNF_PULL_Pos) |
cho45 42:2c3be8694896 140 (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
cho45 42:2c3be8694896 141 (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
cho45 42:2c3be8694896 142 NRF_GPIO->PIN_CNF[P0_15] =
cho45 42:2c3be8694896 143 (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
cho45 42:2c3be8694896 144 (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
cho45 42:2c3be8694896 145 (GPIO_PIN_CNF_PULL_Pullup << GPIO_PIN_CNF_PULL_Pos) |
cho45 42:2c3be8694896 146 (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
cho45 42:2c3be8694896 147 (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
cho45 42:2c3be8694896 148 NRF_GPIO->PIN_CNF[P0_29] =
cho45 42:2c3be8694896 149 (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
cho45 42:2c3be8694896 150 (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
cho45 42:2c3be8694896 151 (GPIO_PIN_CNF_PULL_Pullup << GPIO_PIN_CNF_PULL_Pos) |
cho45 42:2c3be8694896 152 (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
cho45 42:2c3be8694896 153 (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
cho45 42:2c3be8694896 154 NRF_GPIO->PIN_CNF[P0_28] =
cho45 42:2c3be8694896 155 (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
cho45 42:2c3be8694896 156 (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
cho45 42:2c3be8694896 157 (GPIO_PIN_CNF_PULL_Pullup << GPIO_PIN_CNF_PULL_Pos) |
cho45 42:2c3be8694896 158 (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
cho45 42:2c3be8694896 159 (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
cho45 42:2c3be8694896 160 /*
cho45 42:2c3be8694896 161 DigitalIn unused_p0_19(P0_19, PullUp); // This is on board LED which connected to VDD
cho45 42:2c3be8694896 162 DigitalIn unused_p0_11(P0_11, PullUp); // RXD
cho45 42:2c3be8694896 163 */
cho45 42:2c3be8694896 164 NRF_GPIO->PIN_CNF[P0_19] = // This is on board LED which connected to VDD
cho45 42:2c3be8694896 165 (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
cho45 42:2c3be8694896 166 (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
cho45 42:2c3be8694896 167 (GPIO_PIN_CNF_PULL_Pullup << GPIO_PIN_CNF_PULL_Pos) |
cho45 42:2c3be8694896 168 (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
cho45 42:2c3be8694896 169 (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
cho45 42:2c3be8694896 170 NRF_GPIO->PIN_CNF[P0_11] = // RXD
cho45 42:2c3be8694896 171 (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
cho45 42:2c3be8694896 172 (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
cho45 42:2c3be8694896 173 (GPIO_PIN_CNF_PULL_Pullup << GPIO_PIN_CNF_PULL_Pos) |
cho45 42:2c3be8694896 174 (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
cho45 42:2c3be8694896 175 (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
cho45 42:2c3be8694896 176
cho45 32:6c0f43fda460 177 WatchDog::init();
cho45 42:2c3be8694896 178
cho45 42:2c3be8694896 179 // only 100kHz/250khz/400khz
cho45 36:78c211da4eb0 180 i2c.frequency(250000);
cho45 4:54cb552e50c4 181
cho45 43:4de3870b39cb 182 keyboardInterruptIn.mode(PullUp);
cho45 43:4de3870b39cb 183 keyboardInterruptIn.fall(keyboardInterrupt);
cho45 4:54cb552e50c4 184
cho45 5:65d4e94735b6 185 keyboardMatrixController.init();
cho45 33:6a2301a89e92 186 pollCount = 10;
cho45 4:54cb552e50c4 187
cho45 6:f1c3ea8bc850 188 HIDController::init();
cho45 43:4de3870b39cb 189
cho45 16:345eebc4f259 190 // STOP UART RX for power consumption
cho45 21:d801c32231b0 191 NRF_UART0->TASKS_STOPRX = 1;
cho45 43:4de3870b39cb 192
cho45 30:f9ebc769118d 193 // Disable TWI by default.
cho45 16:345eebc4f259 194 NRF_TWI0->ENABLE = TWI_ENABLE_ENABLE_Disabled << TWI_ENABLE_ENABLE_Pos;
cho45 43:4de3870b39cb 195
cho45 32:6c0f43fda460 196 while (1) {
cho45 32:6c0f43fda460 197 WatchDog::reload();
cho45 43:4de3870b39cb 198
cho45 23:b31957ce64e9 199 if (pollCount > 0) {
cho45 42:2c3be8694896 200 DEBUG_PRINTF("scan keys\r\n");
cho45 43:4de3870b39cb 201
cho45 33:6a2301a89e92 202 while (pollCount-- > 0) {
cho45 33:6a2301a89e92 203 WatchDog::reload();
cho45 43:4de3870b39cb 204
cho45 23:b31957ce64e9 205 uint8_t (&keysCurr)[COLS] = state ? keysA : keysB;
cho45 23:b31957ce64e9 206 uint8_t (&keysPrev)[COLS] = state ? keysB : keysA;
cho45 43:4de3870b39cb 207
cho45 23:b31957ce64e9 208 NRF_TWI0->ENABLE = TWI_ENABLE_ENABLE_Enabled << TWI_ENABLE_ENABLE_Pos;
cho45 23:b31957ce64e9 209 keyboardMatrixController.scanKeyboard(keysCurr);
cho45 23:b31957ce64e9 210 NRF_TWI0->ENABLE = TWI_ENABLE_ENABLE_Disabled << TWI_ENABLE_ENABLE_Pos;
cho45 43:4de3870b39cb 211
cho45 23:b31957ce64e9 212 bool queue = false;
cho45 43:4de3870b39cb 213
cho45 23:b31957ce64e9 214 for (int col = 0; col < COLS; col++) {
cho45 48:d6938de02f62 215 const uint8_t changed = keysPrev[col] ^ keysCurr[col];
cho45 23:b31957ce64e9 216 if (changed) queue = true;
cho45 23:b31957ce64e9 217 for (int row = 0; row < ROWS; row++) {
cho45 23:b31957ce64e9 218 if (changed & (1<<row)) {
cho45 23:b31957ce64e9 219 bool pressed = keysCurr[col] & (1<<row);
cho45 42:2c3be8694896 220 // DEBUG_KEYEVENT("changed: col=%d, row=%d / pressed=%d\r\n", col, row, pressed);
cho45 47:5bf2ae8cc710 221 keymap.execute(row, col, pressed);
cho45 23:b31957ce64e9 222 }
cho45 7:b9270a37345b 223 }
cho45 7:b9270a37345b 224 }
cho45 23:b31957ce64e9 225 state = !state;
cho45 43:4de3870b39cb 226
cho45 38:115875b8cb6c 227 if (HIDController::status() == DISCONNECTED ||
cho45 38:115875b8cb6c 228 HIDController::status() == TIMEOUT) {
cho45 43:4de3870b39cb 229
cho45 43:4de3870b39cb 230 if (
cho45 43:4de3870b39cb 231 is_pressed(keysCurr, 0, 0) && // left top 1
cho45 43:4de3870b39cb 232 is_pressed(keysCurr, 1, 0) && // left top 2
cho45 43:4de3870b39cb 233 is_pressed(keysCurr, 0, 15) // right top
cho45 43:4de3870b39cb 234 ) {
cho45 43:4de3870b39cb 235 DEBUG_PRINTF("re-init connection\r\n");
cho45 43:4de3870b39cb 236 HIDController::initializeConnection(true);
cho45 43:4de3870b39cb 237 } else {
cho45 43:4de3870b39cb 238 if (HIDController::status() == TIMEOUT) {
cho45 43:4de3870b39cb 239 DEBUG_PRINTF("wakeup\r\n");
cho45 43:4de3870b39cb 240 HIDController::initializeConnection(false);
cho45 43:4de3870b39cb 241 }
cho45 43:4de3870b39cb 242 }
cho45 38:115875b8cb6c 243 }
cho45 43:4de3870b39cb 244
cho45 23:b31957ce64e9 245 if (queue) HIDController::queueCurrentReportData();
cho45 43:4de3870b39cb 246
cho45 47:5bf2ae8cc710 247 // use timer to use wait 5ms
cho45 58:64df960619ce 248 timeout.detach();
cho45 47:5bf2ae8cc710 249 keyIntervalInterrupt = false;
cho45 36:78c211da4eb0 250 timeout.attach_us(wakeupKeyIntervalSleep, 5000);
cho45 45:f4be69c936f6 251 while (!keyIntervalInterrupt) HIDController::waitForEvent();
cho45 7:b9270a37345b 252 }
cho45 8:d684faf04c9a 253 } else {
cho45 35:6a7fddfa14cf 254 if (!updateStatudLedEnabled) updateStatusLed();
cho45 43:4de3870b39cb 255
cho45 49:09ae6fb04a32 256 {
cho45 49:09ae6fb04a32 257 const float batteryVoltage = BatteryLevel::readBatteryVoltage();
cho45 49:09ae6fb04a32 258 const uint8_t batteryPercentage = BatteryLevel::readBatteryPercentage(batteryVoltage);
cho45 49:09ae6fb04a32 259 const bool isLowBattery = batteryVoltage < BatteryLevel::BATTERY_LOW;
cho45 49:09ae6fb04a32 260
cho45 58:64df960619ce 261 HIDController::updateBatteryLevel(batteryPercentage, batteryVoltage * 1000);
cho45 49:09ae6fb04a32 262
cho45 49:09ae6fb04a32 263 if (isLowBattery) {
cho45 68:13e2343452d5 264 DEBUG_PRINTF("LOWBAT %f %d%%", batteryVoltage, batteryPercentage);
cho45 49:09ae6fb04a32 265 powerOff();
cho45 49:09ae6fb04a32 266 }
cho45 37:4ce71fa47fc3 267 }
cho45 45:f4be69c936f6 268
cho45 45:f4be69c936f6 269 if (HIDController::status() == DISCONNECTED) {
cho45 45:f4be69c936f6 270 HIDController::initializeConnection(false);
cho45 45:f4be69c936f6 271 }
cho45 68:13e2343452d5 272
cho45 68:13e2343452d5 273 DEBUG_PRINTF("WFE [%d:%s]\r\n",
cho45 68:13e2343452d5 274 HIDController::status(),
cho45 68:13e2343452d5 275 HIDController::statusString()
cho45 68:13e2343452d5 276 );
cho45 58:64df960619ce 277 HIDController::waitForEvent();
cho45 7:b9270a37345b 278 }
cho45 2:c2e3f240640c 279 }
cho45 43:4de3870b39cb 280 }