Diff: bit_board.cpp

Revision:

1:032b96b05e51

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bit_board.cpp	Wed Jun 12 15:21:01 2019 +0000
@@ -0,0 +1,316 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2015 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mbed.h"
+#include "ble/BLE.h"
+#include "KeyboardService.h"
+#include "MicroBitPin.h"
+#include "examples_common.h"
+#include "MicroBit.h"
+/**
+ * This program implements a complete HID-over-Gatt Profile:
+ *  - HID is provided by KeyboardService
+ *  - Battery Service
+ *  - Device Information Service
+ *
+ * Complete strings can be sent over BLE using printf. Please note, however, than a 12char string
+ * will take about 500ms to transmit, principally because of the limited notification rate in BLE.
+ * KeyboardService uses a circular buffer to store the strings to send, and calls to putc will fail
+ * once this buffer is full. This will result in partial strings being sent to the client.
+ */
+ 
+ //The micro:bit has a matrixed display, this is a simple way to use some LEDs on it
+DigitalOut col9(P0_12, 0);
+DigitalOut waiting_led(P0_13);
+DigitalOut connected_led(P0_15);
+
+InterruptIn button1(BUTTON_A);
+InterruptIn button2(BUTTON_B);
+
+//InterruptIn key1(MICROBIT_PIN_P0);
+// Try to use external signal, rather than button a&b as keys
+
+BLE ble;
+KeyboardService *kbdServicePtr;
+
+static const char DEVICE_NAME[] = "bit:board wire loop";
+static const char SHORT_DEVICE_NAME[] = "kbd blue";
+
+static void onDisconnect(const Gap::DisconnectionCallbackParams_t *params)
+{
+    HID_DEBUG("disconnected\r\n");
+    connected_led = 0;
+
+    ble.gap().startAdvertising(); // restart advertising
+}
+
+static void onConnect(const Gap::ConnectionCallbackParams_t *params)
+{
+    HID_DEBUG("connected\r\n");
+    waiting_led = false;
+}
+
+static void waiting() {
+    if (!kbdServicePtr->isConnected())
+        waiting_led = !waiting_led;
+    else
+        connected_led = !connected_led;
+}
+
+void send_string(const char * c) {
+    if (!kbdServicePtr)
+        return;
+
+    if (!kbdServicePtr->isConnected()) {
+        HID_DEBUG("we haven't connected yet...");
+    } else {
+        int len = strlen(c);
+        kbdServicePtr->printf(c);
+        HID_DEBUG("sending %d chars\r\n", len);
+    }
+}
+
+void send_stuff() {send_string("n");wait(0.1);}
+
+void send_more_stuff() {send_string("p"); wait(0.1);}
+
+void send_one(){
+    inputReportData[0] = 0;
+    inputReportData[2] = 0x1e;
+    kbdServicePtr->send(inputReportData); //key down event?
+    kbdServicePtr->send(emptyInputReportData); // key up event?
+    wait(0.1);
+}
+
+void send_zero(){// testing input from pins
+    inputReportData[0] = 0;
+    inputReportData[2] = 0x27;
+    kbdServicePtr->send(inputReportData); //key down event?
+    kbdServicePtr->send(emptyInputReportData); // key up event?
+    wait(0.1);
+}
+
+void send_up(){// testing input from pins
+    inputReportData[0] = 0;
+    inputReportData[2] = 0x52;
+    kbdServicePtr->send(inputReportData); //key down event?
+    kbdServicePtr->send(emptyInputReportData); // key up event?
+    wait(0.1);
+}
+
+void send_down(){// testing input from pins
+   // kbdServicePtr->putc(DownArrow);
+    inputReportData[0] = 0;
+    inputReportData[2] = 0x51;
+    kbdServicePtr->send(inputReportData);
+    kbdServicePtr->send(emptyInputReportData);
+    wait(0.1);
+}
+
+void send_left(){// testing input from pins
+    inputReportData[0] = 0;
+    inputReportData[2] = 0x50;
+    kbdServicePtr->send(inputReportData);
+    kbdServicePtr->send(emptyInputReportData);
+    wait(0.1);
+}
+
+void send_right(){// testing input from pins
+    inputReportData[0] = 0;
+    inputReportData[2] = 0x4f;
+    kbdServicePtr->send(inputReportData);
+    kbdServicePtr->send(emptyInputReportData);
+    wait(0.1);
+}
+
+void send_space(){// testing input from pins
+    inputReportData[0] = 0;
+    inputReportData[2] = 0x2c;
+    kbdServicePtr->send(inputReportData);
+    kbdServicePtr->send(emptyInputReportData);
+    wait(0.1);
+}
+
+void send_delete(){// testing input from pins
+    inputReportData[0] = 0;
+    inputReportData[2] = 0x2a;
+    kbdServicePtr->send(inputReportData);
+    kbdServicePtr->send(emptyInputReportData);
+    wait(0.1);
+}
+void send_tab(){// testing input from pins
+    inputReportData[0] = 0;
+    inputReportData[2] = 0x2b;
+    kbdServicePtr->send(inputReportData);
+    kbdServicePtr->send(emptyInputReportData);
+    wait(0.1);
+}
+
+void send_return(){// testing input from pins
+    inputReportData[0] = 0;
+    inputReportData[2] = 0x28;
+    kbdServicePtr->send(inputReportData);
+    kbdServicePtr->send(emptyInputReportData);
+    wait(0.1);
+}
+
+void send_release(){
+    kbdServicePtr->send(emptyInputReportData);
+    wait(0.1);
+}
+    
+
+DigitalIn touch1(MICROBIT_PIN_P13); // for the normal 4
+DigitalIn touch2(MICROBIT_PIN_P14);
+DigitalIn touch3(MICROBIT_PIN_P15);
+DigitalIn touch4(MICROBIT_PIN_P16); // disable for wire loop example?
+InterruptIn touch0(MICROBIT_PIN_P8);//
+//DigitalIn touch0(MICROBIT_PIN_P8); // for wire loop example only
+AnalogIn x_axis(MICROBIT_PIN_P1);
+AnalogIn y_axis(MICROBIT_PIN_P2);
+AnalogIn potentiometer(MICROBIT_PIN_P0);
+
+void JoystickControl(){
+    float x,y;
+
+    x = x_axis.read();
+    if (x < 0.05f) send_left();
+    if (x > 0.95f) send_right();
+    
+    y = y_axis.read();
+    if (y < 0.05f) send_down();
+    if (y > 0.95f) send_up();
+    
+    wait(0.05);
+}
+
+void crossy_road_touch(){
+    if (touch1 == 1) send_space(); 
+    wait(0.05);
+}
+
+enum mode{empty,arithmetic, alphebet, number};
+
+void potentiometer_control(){
+    mode current_mode = empty;
+    float value = potentiometer.read();
+    
+    if (value < (float) 229/1024 ) {current_mode = empty;}
+    else if (value < (float) 307/1024) { current_mode = arithmetic;}
+    else if (value < (float) 522/1024) { current_mode = number;}
+    else {current_mode = alphebet;}
+    
+    // need to update mode, depending on value
+    
+    switch(current_mode){
+        case empty: 
+            if (touch1 == 1) send_space(); 
+            if (touch2 == 1) send_delete(); 
+            if (touch3 == 1) send_tab(); 
+            if (touch4 == 1) send_return(); 
+            wait(0.05);
+            break;
+        case arithmetic: 
+            if (touch1 == 1) {send_string("+");wait(0.1);} 
+            if (touch2 == 1) {send_string("-");wait(0.1);}
+            if (touch3 == 1) {send_string("*");wait(0.1);}
+            if (touch4 == 1) {send_string("/");wait(0.1);}
+            wait(0.05);
+            break;
+        case alphebet: 
+            if (touch1 == 1) {send_string("A");wait(0.1);} 
+            if (touch2 == 1) {send_string("B");wait(0.1);}
+            if (touch3 == 1) {send_string("C");wait(0.1);}
+            if (touch4 == 1) {send_string("D");wait(0.1);}
+            wait(0.05);
+            break;
+        case number: 
+            if (touch1 == 1) {send_string("1");wait(0.1);} 
+            if (touch2 == 1) {send_string("2");wait(0.1);}
+            if (touch3 == 1) {send_string("3");wait(0.1);}
+            if (touch4 == 1) {send_string("4");wait(0.1);}
+            wait(0.05);
+            break;
+    }
+}
+
+void wire_loop_control(){
+//    if (touch0 == 1) {send_string("w");wait(0.1);}  // touch, need to stop timer as well
+    // ???somehow pin8 is active high, need to pull down????
+    if (touch1 == 1) {send_string("x");wait(0.1);}  // start timer
+    if (touch2 == 1) {send_string("y");wait(0.1);}  // stop timer
+    if (touch3 == 1) {send_string("z");wait(0.1);}  // reset timer
+//    if (touch4 == 1) {send_string("w");wait(0.1);} 
+ /// try to use interrup
+}
+
+void touched(){send_string("w");wait(0.1);}
+
+int main(){
+    //create_fiber(JoystickControl);
+//    create_fiber(BLE_fiber);
+    Ticker heartbeat;
+
+    touch0.fall(touched);
+    //button1.rise(send_one);
+//    button2.rise(send_zero);
+    button1.rise(send_stuff);
+    button2.rise(send_more_stuff);
+
+    HID_DEBUG("initialising ticker\r\n");
+
+    heartbeat.attach(waiting, 1);
+
+    HID_DEBUG("initialising ble\r\n");
+    ble.init();
+
+    ble.gap().onDisconnection(onDisconnect);
+    ble.gap().onConnection(onConnect);
+
+    initializeSecurity(ble);
+
+    HID_DEBUG("adding hid service\r\n");
+    KeyboardService kbdService(ble);
+    kbdServicePtr = &kbdService;
+
+    HID_DEBUG("adding device info and battery service\r\n");
+    initializeHOGP(ble);
+
+    HID_DEBUG("setting up gap\r\n");
+    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::KEYBOARD);
+    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME,
+                                           (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
+    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
+                                           (uint8_t *)SHORT_DEVICE_NAME, sizeof(SHORT_DEVICE_NAME));
+    ble.gap().setDeviceName((const uint8_t *)DEVICE_NAME);
+
+    HID_DEBUG("advertising\r\n");
+    ble.gap().startAdvertising();
+    
+    while (true) {
+        ble.waitForEvent();  
+        
+        //JoystickControl();  
+        
+        // normally, only realize one example: crossy road, potentiometer, or wire loop
+//        crossy_road_touch();
+//        potentiometer_control();
+        wire_loop_control();
+    }
+//    release_fiber();
+}
+
+