Use the microbit as a foot paddle Send Shift-Ctrl-Alt F11 and F12 for the buttons, you can use those a global hotkeys for actions, e.g. mute/unmute microphone
Dependencies: mbed BLE_API nRF51822
main.cpp@4:c7384b889baa, 2019-04-08 (annotated)
- Committer:
- schlomo
- Date:
- Mon Apr 08 22:13:34 2019 +0000
- Revision:
- 4:c7384b889baa
- Parent:
- keyboard_stream.cpp@3:7d7822143a2d
Send Shift-Ctrl-Alt F11 and F12 for left and right button; Renamed to micro:bit Foot Paddle
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
JonnyA | 0:cb1939018833 | 1 | /* mbed Microcontroller Library |
JonnyA | 0:cb1939018833 | 2 | * Copyright (c) 2015 ARM Limited |
JonnyA | 0:cb1939018833 | 3 | * |
JonnyA | 0:cb1939018833 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
JonnyA | 0:cb1939018833 | 5 | * you may not use this file except in compliance with the License. |
JonnyA | 0:cb1939018833 | 6 | * You may obtain a copy of the License at |
JonnyA | 0:cb1939018833 | 7 | * |
JonnyA | 0:cb1939018833 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
JonnyA | 0:cb1939018833 | 9 | * |
JonnyA | 0:cb1939018833 | 10 | * Unless required by applicable law or agreed to in writing, software |
JonnyA | 0:cb1939018833 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
JonnyA | 0:cb1939018833 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
JonnyA | 0:cb1939018833 | 13 | * See the License for the specific language governing permissions and |
JonnyA | 0:cb1939018833 | 14 | * limitations under the License. |
JonnyA | 0:cb1939018833 | 15 | */ |
JonnyA | 0:cb1939018833 | 16 | |
JonnyA | 0:cb1939018833 | 17 | #include "mbed.h" |
JonnyA | 0:cb1939018833 | 18 | |
JonnyA | 0:cb1939018833 | 19 | #include "ble/BLE.h" |
JonnyA | 0:cb1939018833 | 20 | #include "KeyboardService.h" |
JonnyA | 0:cb1939018833 | 21 | |
JonnyA | 0:cb1939018833 | 22 | #include "examples_common.h" |
JonnyA | 0:cb1939018833 | 23 | |
JonnyA | 0:cb1939018833 | 24 | /** |
JonnyA | 0:cb1939018833 | 25 | * This program implements a complete HID-over-Gatt Profile: |
JonnyA | 0:cb1939018833 | 26 | * - HID is provided by KeyboardService |
JonnyA | 0:cb1939018833 | 27 | * - Battery Service |
JonnyA | 0:cb1939018833 | 28 | * - Device Information Service |
JonnyA | 0:cb1939018833 | 29 | * |
JonnyA | 0:cb1939018833 | 30 | * Complete strings can be sent over BLE using printf. Please note, however, than a 12char string |
JonnyA | 0:cb1939018833 | 31 | * will take about 500ms to transmit, principally because of the limited notification rate in BLE. |
JonnyA | 0:cb1939018833 | 32 | * KeyboardService uses a circular buffer to store the strings to send, and calls to putc will fail |
JonnyA | 0:cb1939018833 | 33 | * once this buffer is full. This will result in partial strings being sent to the client. |
JonnyA | 0:cb1939018833 | 34 | */ |
JonnyA | 1:9e174f8fd9e9 | 35 | |
JonnyA | 1:9e174f8fd9e9 | 36 | //The micro:bit has a matrixed display, this is a simple way to use some LEDs on it |
JonnyA | 1:9e174f8fd9e9 | 37 | DigitalOut col9(P0_12, 0); |
JonnyA | 0:cb1939018833 | 38 | |
JonnyA | 1:9e174f8fd9e9 | 39 | DigitalOut waiting_led(P0_13); |
JonnyA | 1:9e174f8fd9e9 | 40 | DigitalOut connected_led(P0_15); |
JonnyA | 0:cb1939018833 | 41 | |
JonnyA | 0:cb1939018833 | 42 | InterruptIn button1(BUTTON_A); |
JonnyA | 0:cb1939018833 | 43 | InterruptIn button2(BUTTON_B); |
JonnyA | 0:cb1939018833 | 44 | |
JonnyA | 0:cb1939018833 | 45 | BLE ble; |
JonnyA | 0:cb1939018833 | 46 | KeyboardService *kbdServicePtr; |
JonnyA | 0:cb1939018833 | 47 | |
schlomo | 4:c7384b889baa | 48 | static const char DEVICE_NAME[] = "micro:bit Foot Paddle"; |
schlomo | 4:c7384b889baa | 49 | static const char SHORT_DEVICE_NAME[] = "footpaddle"; |
JonnyA | 0:cb1939018833 | 50 | |
JonnyA | 0:cb1939018833 | 51 | static void onDisconnect(const Gap::DisconnectionCallbackParams_t *params) |
JonnyA | 0:cb1939018833 | 52 | { |
JonnyA | 0:cb1939018833 | 53 | HID_DEBUG("disconnected\r\n"); |
JonnyA | 0:cb1939018833 | 54 | connected_led = 0; |
JonnyA | 0:cb1939018833 | 55 | |
JonnyA | 0:cb1939018833 | 56 | ble.gap().startAdvertising(); // restart advertising |
JonnyA | 0:cb1939018833 | 57 | } |
JonnyA | 0:cb1939018833 | 58 | |
JonnyA | 0:cb1939018833 | 59 | static void onConnect(const Gap::ConnectionCallbackParams_t *params) |
JonnyA | 0:cb1939018833 | 60 | { |
JonnyA | 0:cb1939018833 | 61 | HID_DEBUG("connected\r\n"); |
JonnyA | 0:cb1939018833 | 62 | waiting_led = false; |
JonnyA | 0:cb1939018833 | 63 | } |
JonnyA | 0:cb1939018833 | 64 | |
JonnyA | 0:cb1939018833 | 65 | static void waiting() { |
JonnyA | 0:cb1939018833 | 66 | if (!kbdServicePtr->isConnected()) |
JonnyA | 0:cb1939018833 | 67 | waiting_led = !waiting_led; |
JonnyA | 0:cb1939018833 | 68 | else |
JonnyA | 0:cb1939018833 | 69 | connected_led = !connected_led; |
JonnyA | 0:cb1939018833 | 70 | } |
JonnyA | 0:cb1939018833 | 71 | |
JonnyA | 0:cb1939018833 | 72 | void send_string(const char * c) { |
JonnyA | 0:cb1939018833 | 73 | if (!kbdServicePtr) |
JonnyA | 0:cb1939018833 | 74 | return; |
JonnyA | 0:cb1939018833 | 75 | |
JonnyA | 0:cb1939018833 | 76 | if (!kbdServicePtr->isConnected()) { |
JonnyA | 0:cb1939018833 | 77 | HID_DEBUG("we haven't connected yet..."); |
JonnyA | 0:cb1939018833 | 78 | } else { |
JonnyA | 0:cb1939018833 | 79 | int len = strlen(c); |
JonnyA | 0:cb1939018833 | 80 | kbdServicePtr->printf(c); |
schlomo | 4:c7384b889baa | 81 | HID_DEBUG("sending %d chars: %s\r\n", len, c); |
JonnyA | 0:cb1939018833 | 82 | } |
JonnyA | 0:cb1939018833 | 83 | } |
JonnyA | 0:cb1939018833 | 84 | |
schlomo | 4:c7384b889baa | 85 | void send_ctrl_shift_alt(const uint8_t key) { |
schlomo | 4:c7384b889baa | 86 | if (!kbdServicePtr) |
schlomo | 4:c7384b889baa | 87 | return; |
schlomo | 4:c7384b889baa | 88 | |
schlomo | 4:c7384b889baa | 89 | if (!kbdServicePtr->isConnected()) { |
schlomo | 4:c7384b889baa | 90 | HID_DEBUG("we haven't connected yet..."); |
schlomo | 4:c7384b889baa | 91 | } else { |
schlomo | 4:c7384b889baa | 92 | kbdServicePtr->keyDownCode(key, KEY_CTRL + KEY_SHIFT + KEY_ALT); |
schlomo | 4:c7384b889baa | 93 | HID_DEBUG("sending 0x%X\r\n", key); |
schlomo | 4:c7384b889baa | 94 | kbdServicePtr->keyUpCode(); |
schlomo | 4:c7384b889baa | 95 | } |
schlomo | 4:c7384b889baa | 96 | } |
schlomo | 4:c7384b889baa | 97 | void pressed_button1() { |
schlomo | 4:c7384b889baa | 98 | send_ctrl_shift_alt(0x8A); |
JonnyA | 3:7d7822143a2d | 99 | wait(0.1); |
JonnyA | 3:7d7822143a2d | 100 | |
JonnyA | 0:cb1939018833 | 101 | } |
JonnyA | 0:cb1939018833 | 102 | |
schlomo | 4:c7384b889baa | 103 | void pressed_button2() { |
schlomo | 4:c7384b889baa | 104 | send_ctrl_shift_alt(0x8B); |
JonnyA | 3:7d7822143a2d | 105 | wait(0.1); |
JonnyA | 3:7d7822143a2d | 106 | |
JonnyA | 0:cb1939018833 | 107 | } |
JonnyA | 0:cb1939018833 | 108 | |
JonnyA | 0:cb1939018833 | 109 | int main() |
JonnyA | 0:cb1939018833 | 110 | { |
JonnyA | 0:cb1939018833 | 111 | Ticker heartbeat; |
JonnyA | 0:cb1939018833 | 112 | |
schlomo | 4:c7384b889baa | 113 | button1.rise(pressed_button1); |
schlomo | 4:c7384b889baa | 114 | button2.rise(pressed_button2); |
JonnyA | 0:cb1939018833 | 115 | |
JonnyA | 0:cb1939018833 | 116 | HID_DEBUG("initialising ticker\r\n"); |
JonnyA | 0:cb1939018833 | 117 | |
JonnyA | 0:cb1939018833 | 118 | heartbeat.attach(waiting, 1); |
JonnyA | 0:cb1939018833 | 119 | |
JonnyA | 0:cb1939018833 | 120 | HID_DEBUG("initialising ble\r\n"); |
JonnyA | 0:cb1939018833 | 121 | ble.init(); |
JonnyA | 0:cb1939018833 | 122 | |
JonnyA | 0:cb1939018833 | 123 | ble.gap().onDisconnection(onDisconnect); |
JonnyA | 0:cb1939018833 | 124 | ble.gap().onConnection(onConnect); |
JonnyA | 0:cb1939018833 | 125 | |
JonnyA | 0:cb1939018833 | 126 | initializeSecurity(ble); |
JonnyA | 0:cb1939018833 | 127 | |
JonnyA | 0:cb1939018833 | 128 | HID_DEBUG("adding hid service\r\n"); |
JonnyA | 0:cb1939018833 | 129 | KeyboardService kbdService(ble); |
JonnyA | 0:cb1939018833 | 130 | kbdServicePtr = &kbdService; |
JonnyA | 0:cb1939018833 | 131 | |
JonnyA | 0:cb1939018833 | 132 | HID_DEBUG("adding device info and battery service\r\n"); |
JonnyA | 0:cb1939018833 | 133 | initializeHOGP(ble); |
JonnyA | 0:cb1939018833 | 134 | |
JonnyA | 0:cb1939018833 | 135 | HID_DEBUG("setting up gap\r\n"); |
JonnyA | 0:cb1939018833 | 136 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::KEYBOARD); |
JonnyA | 0:cb1939018833 | 137 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, |
JonnyA | 0:cb1939018833 | 138 | (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); |
JonnyA | 0:cb1939018833 | 139 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME, |
JonnyA | 0:cb1939018833 | 140 | (uint8_t *)SHORT_DEVICE_NAME, sizeof(SHORT_DEVICE_NAME)); |
JonnyA | 1:9e174f8fd9e9 | 141 | ble.gap().setDeviceName((const uint8_t *)DEVICE_NAME); |
JonnyA | 0:cb1939018833 | 142 | |
JonnyA | 0:cb1939018833 | 143 | HID_DEBUG("advertising\r\n"); |
JonnyA | 0:cb1939018833 | 144 | ble.gap().startAdvertising(); |
JonnyA | 0:cb1939018833 | 145 | |
JonnyA | 0:cb1939018833 | 146 | while (true) { |
JonnyA | 0:cb1939018833 | 147 | ble.waitForEvent(); |
JonnyA | 0:cb1939018833 | 148 | } |
JonnyA | 0:cb1939018833 | 149 | } |
JonnyA | 0:cb1939018833 | 150 |