sforkowany z mirror/meshtastic-firmware
add NRF52 BLE example code
geeksville
rodzic
8f3b33c84c
commit
5b0451f25c
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@ -1,12 +1,26 @@
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# Initial work items
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* make a new boarddef with a variant.h file. Fix pins in that file. In particular:
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#define PIN_SPI_MISO (46)
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#define PIN_SPI_MOSI (45)
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#define PIN_SPI_SCK (47)
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#define PIN_WIRE_SDA (26)
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#define PIN_WIRE_SCL (27)
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- get old radio driver working on NRF52
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- get BLE working
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- add PMU driver
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- add new radio driver
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- make a file system implementation (preferably one that can see the files the bootloader also sees)
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- add LCD driver
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- make a new boarddef with a variant.h file. Fix pins in that file. In particular:
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#define PIN_SPI_MISO (46)
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#define PIN_SPI_MOSI (45)
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#define PIN_SPI_SCK (47)
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#define PIN_WIRE_SDA (26)
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#define PIN_WIRE_SCL (27)
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# Secondary work items
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- turn on security for BLE
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- make power management/sleep work properly
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- make a settimeofday implementation
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- make ble endpoints not require "start config", jsut have them start in config mode
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```
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/*
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per
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https://docs.platformio.org/en/latest/tutorials/nordicnrf52/arduino_debugging_unit_testing.html
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@ -56,4 +70,5 @@ https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/custom-hrm
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/*
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good led ble demo:
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https://github.com/adafruit/Adafruit_nRF52_Arduino/blob/master/libraries/Bluefruit52Lib/examples/Peripheral/nrf_blinky/nrf_blinky.ino
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*/
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*/
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```
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@ -0,0 +1,206 @@
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#include "NRF52Bluetooth.h"
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#include "configuration.h"
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#include <bluefruit.h>
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/* HRM Service Definitions
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* Heart Rate Monitor Service: 0x180D
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* Heart Rate Measurement Char: 0x2A37
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* Body Sensor Location Char: 0x2A38
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*/
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BLEService hrms = BLEService(UUID16_SVC_HEART_RATE);
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BLECharacteristic hrmc = BLECharacteristic(UUID16_CHR_HEART_RATE_MEASUREMENT);
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BLECharacteristic bslc = BLECharacteristic(UUID16_CHR_BODY_SENSOR_LOCATION);
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BLEDis bledis; // DIS (Device Information Service) helper class instance
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BLEBas blebas; // BAS (Battery Service) helper class instance
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uint8_t bps = 0;
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void connect_callback(uint16_t conn_handle)
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{
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// Get the reference to current connection
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BLEConnection *connection = Bluefruit.Connection(conn_handle);
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char central_name[32] = {0};
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connection->getPeerName(central_name, sizeof(central_name));
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DEBUG_MSG("Connected to %s\n", central_name);
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}
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/**
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* Callback invoked when a connection is dropped
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* @param conn_handle connection where this event happens
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* @param reason is a BLE_HCI_STATUS_CODE which can be found in ble_hci.h
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*/
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void disconnect_callback(uint16_t conn_handle, uint8_t reason)
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{
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(void)conn_handle;
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(void)reason;
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DEBUG_MSG("Disconnected, reason = 0x%x\n", reason);
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}
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void cccd_callback(uint16_t conn_hdl, BLECharacteristic *chr, uint16_t cccd_value)
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{
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// Display the raw request packet
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DEBUG_MSG("CCCD Updated: %u\n", cccd_value);
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// Check the characteristic this CCCD update is associated with in case
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// this handler is used for multiple CCCD records.
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if (chr->uuid == hrmc.uuid) {
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if (chr->notifyEnabled(conn_hdl)) {
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DEBUG_MSG("Heart Rate Measurement 'Notify' enabled\n");
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} else {
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DEBUG_MSG("Heart Rate Measurement 'Notify' disabled\n");
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}
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}
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}
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void startAdv(void)
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{
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// Advertising packet
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Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
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Bluefruit.Advertising.addTxPower();
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// Include HRM Service UUID
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Bluefruit.Advertising.addService(hrms);
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// Include Name
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Bluefruit.Advertising.addName();
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/* Start Advertising
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* - Enable auto advertising if disconnected
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* - Interval: fast mode = 20 ms, slow mode = 152.5 ms
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* - Timeout for fast mode is 30 seconds
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* - Start(timeout) with timeout = 0 will advertise forever (until connected)
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*
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* For recommended advertising interval
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* https://developer.apple.com/library/content/qa/qa1931/_index.html
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*/
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Bluefruit.Advertising.restartOnDisconnect(true);
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Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
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Bluefruit.Advertising.setFastTimeout(30); // number of seconds in fast mode
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Bluefruit.Advertising.start(0); // 0 = Don't stop advertising after n seconds
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}
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void setupHRM(void)
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{
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// Configure the Heart Rate Monitor service
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// See: https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.service.heart_rate.xml
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// Supported Characteristics:
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// Name UUID Requirement Properties
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// ---------------------------- ------ ----------- ----------
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// Heart Rate Measurement 0x2A37 Mandatory Notify
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// Body Sensor Location 0x2A38 Optional Read
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// Heart Rate Control Point 0x2A39 Conditional Write <-- Not used here
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hrms.begin();
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// Note: You must call .begin() on the BLEService before calling .begin() on
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// any characteristic(s) within that service definition.. Calling .begin() on
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// a BLECharacteristic will cause it to be added to the last BLEService that
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// was 'begin()'ed!
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// Configure the Heart Rate Measurement characteristic
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// See:
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// https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.characteristic.heart_rate_measurement.xml
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// Properties = Notify
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// Min Len = 1
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// Max Len = 8
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// B0 = UINT8 - Flag (MANDATORY)
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// b5:7 = Reserved
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// b4 = RR-Internal (0 = Not present, 1 = Present)
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// b3 = Energy expended status (0 = Not present, 1 = Present)
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// b1:2 = Sensor contact status (0+1 = Not supported, 2 = Supported but contact not detected, 3 = Supported and
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// detected) b0 = Value format (0 = UINT8, 1 = UINT16)
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// B1 = UINT8 - 8-bit heart rate measurement value in BPM
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// B2:3 = UINT16 - 16-bit heart rate measurement value in BPM
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// B4:5 = UINT16 - Energy expended in joules
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// B6:7 = UINT16 - RR Internal (1/1024 second resolution)
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hrmc.setProperties(CHR_PROPS_NOTIFY);
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hrmc.setPermission(SECMODE_OPEN, SECMODE_NO_ACCESS);
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hrmc.setFixedLen(2);
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hrmc.setCccdWriteCallback(cccd_callback); // Optionally capture CCCD updates
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hrmc.begin();
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uint8_t hrmdata[2] = {0b00000110, 0x40}; // Set the characteristic to use 8-bit values, with the sensor connected and detected
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hrmc.write(hrmdata, 2);
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// Configure the Body Sensor Location characteristic
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// See:
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// https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.characteristic.body_sensor_location.xml
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// Properties = Read
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// Min Len = 1
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// Max Len = 1
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// B0 = UINT8 - Body Sensor Location
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// 0 = Other
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// 1 = Chest
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// 2 = Wrist
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// 3 = Finger
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// 4 = Hand
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// 5 = Ear Lobe
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// 6 = Foot
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// 7:255 = Reserved
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bslc.setProperties(CHR_PROPS_READ);
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bslc.setPermission(SECMODE_OPEN, SECMODE_NO_ACCESS);
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bslc.setFixedLen(1);
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bslc.begin();
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bslc.write8(2); // Set the characteristic to 'Wrist' (2)
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}
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void NRF52Bluetooth::setup()
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{
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// Initialise the Bluefruit module
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DEBUG_MSG("Initialise the Bluefruit nRF52 module\n");
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Bluefruit.begin();
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// Set the advertised device name (keep it short!)
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Bluefruit.setName("Meshtastic52");
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// Set the connect/disconnect callback handlers
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Bluefruit.Periph.setConnectCallback(connect_callback);
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Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
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// Configure and Start the Device Information Service
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DEBUG_MSG("Configuring the Device Information Service");
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bledis.setManufacturer("meshtastic.org");
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bledis.setModel("NRF52-meshtastic");
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bledis.begin();
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// Start the BLE Battery Service and set it to 100%
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DEBUG_MSG("Configuring the Battery Service");
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blebas.begin();
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blebas.write(42); // FIXME, report real power levels
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// Setup the Heart Rate Monitor service using
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// BLEService and BLECharacteristic classes
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DEBUG_MSG("Configuring the Heart Rate Monitor Service");
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setupHRM();
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// Setup the advertising packet(s)
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DEBUG_MSG("Setting up the advertising payload(s)\n");
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startAdv();
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DEBUG_MSG("Advertising\n");
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}
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/*
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void loop()
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{
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digitalToggle(LED_RED);
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if ( Bluefruit.connected() ) {
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uint8_t hrmdata[2] = { 0b00000110, bps++ }; // Sensor connected, increment BPS value
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// Note: We use .notify instead of .write!
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// If it is connected but CCCD is not enabled
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// The characteristic's value is still updated although notification is not sent
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if ( hrmc.notify(hrmdata, sizeof(hrmdata)) ){
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Serial.print("Heart Rate Measurement updated to: "); Serial.println(bps);
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}else{
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Serial.println("ERROR: Notify not set in the CCCD or not connected!");
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}
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}
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// Only send update once per second
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delay(1000);
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}
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*/
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@ -0,0 +1,8 @@
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#pragma once
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class NRF52Bluetooth
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{
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public:
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void setup();
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};
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@ -1,7 +1,2 @@
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#include "target_specific.h"
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void setBluetoothEnable(bool on)
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{
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// Do nothing
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}
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@ -1,3 +1,5 @@
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#include "NRF52Bluetooth.h"
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#include "configuration.h"
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#include <assert.h>
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#include <ble_gap.h>
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#include <memory.h>
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@ -31,4 +33,22 @@ void getMacAddr(uint8_t *dmac)
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// FIXME - byte order might be wrong and high bits might be wrong
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memcpy(dmac, (const void *)NRF_FICR->DEVICEADDR, 6);
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#endif
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}
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}
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NRF52Bluetooth *nrf52Bluetooth;
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static bool bleOn = false;
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void setBluetoothEnable(bool on)
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{
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if (on != bleOn) {
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if (on) {
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if (!nrf52Bluetooth) {
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nrf52Bluetooth = new NRF52Bluetooth();
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nrf52Bluetooth->setup();
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}
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} else {
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DEBUG_MSG("FIXME: implement BLE disable\n");
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}
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bleOn = on;
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}
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}
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