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Release 0.2.6

Browse source 
=============

Bugfixes and enhancements to URIBeaconConfigService. This entire release
refers to this service. Nothing else has changed.

Enhancements
~~~~~~~~~~~~

* Rename to URIBeacon2Service to URIBeaconConfigService.

* Add helper functions to update characteristics.

* Add txPowerMode characteristic.

* Add API to setup TxPowerLevels.

Bugfixes
~~~~~~~~

* Uri Data must be between 0 and 18 bytes.

* beaconPeriod should be converted to adv_duration_units only before calling setAdvertisingInterval().

* Fixed characteristic properties to match spec.

* Make UUID consts static so that the header file can be included from multiple compilation units.

Compatibility
~~~~~~~~~~~~~

This release is backward compatible with 0.2.4.
This commit is contained in:
Rohit Grover 2014-12-01 14:29:39 +00:00
commit 04ceb5cea6
1 changed files with 143 additions and 103 deletions
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246
services/URIBeacon2Service.h → services/URIBeaconConfigService.h
View file

@ -14,24 +14,25 @@
* limitations under the License.
*/
#ifndef __BLE_URI_BEACON_2_SERVICE_H__
#define __BLE_URI_BEACON_2_SERVICE_H__
#ifndef __BLE_URI_BEACON_CONFIG_SERVICE_H__
#define __BLE_URI_BEACON_CONFIG_SERVICE_H__
#include "BLEDevice.h"
#define UUID_INITIALIZER_LIST(FIRST, SECOND) { \
0xee, 0x0c, FIRST, SECOND, 0x87, 0x86, 0x40, 0xba, \
0xab, 0x96, 0x99, 0xb9, 0x1a, 0xc9, 0x81, 0xd8, \
#define URI_BEACON_CONFIG_UUID_INITIALIZER_LIST(FIRST, SECOND) { \
0xee, 0x0c, FIRST, SECOND, 0x87, 0x86, 0x40, 0xba, \
0xab, 0x96, 0x99, 0xb9, 0x1a, 0xc9, 0x81, 0xd8, \
}
const uint8_t URIBeacon2ControlServiceUUID[] = UUID_INITIALIZER_LIST(0x20, 0x80);
const uint8_t lockedStateCharUUID[] = UUID_INITIALIZER_LIST(0x20, 0x81);
const uint8_t uriDataCharUUID[] = UUID_INITIALIZER_LIST(0x20, 0x84);
const uint8_t flagsCharUUID[] = UUID_INITIALIZER_LIST(0x20, 0x85);
const uint8_t txPowerLevelsCharUUID[] = UUID_INITIALIZER_LIST(0x20, 0x86);
const uint8_t beaconPeriodCharUUID[] = UUID_INITIALIZER_LIST(0x20, 0x88);
const uint8_t resetCharUUID[] = UUID_INITIALIZER_LIST(0x20, 0x89);
static const uint8_t URIBeacon2ControlServiceUUID[] = URI_BEACON_CONFIG_UUID_INITIALIZER_LIST(0x20, 0x80);
static const uint8_t lockedStateCharUUID[] = URI_BEACON_CONFIG_UUID_INITIALIZER_LIST(0x20, 0x81);
static const uint8_t uriDataCharUUID[] = URI_BEACON_CONFIG_UUID_INITIALIZER_LIST(0x20, 0x84);
static const uint8_t flagsCharUUID[] = URI_BEACON_CONFIG_UUID_INITIALIZER_LIST(0x20, 0x85);
static const uint8_t txPowerLevelsCharUUID[] = URI_BEACON_CONFIG_UUID_INITIALIZER_LIST(0x20, 0x86);
static const uint8_t txPowerModeCharUUID[] = URI_BEACON_CONFIG_UUID_INITIALIZER_LIST(0x20, 0x87);
static const uint8_t beaconPeriodCharUUID[] = URI_BEACON_CONFIG_UUID_INITIALIZER_LIST(0x20, 0x88);
static const uint8_t resetCharUUID[] = URI_BEACON_CONFIG_UUID_INITIALIZER_LIST(0x20, 0x89);
class URIBeacon2Service {
class URIBeaconConfigService {
public:
enum TXPowerModes_t {
TX_POWER_MODE_LOWEST = 0,
@ -44,18 +45,25 @@ public:
/**
* @param[ref] ble
* BLEDevice object for the underlying controller.
* @param[in] urldata
* @param[in] uridata
* URI as a null-terminated string.
* @param[in] flagsIn
* UriBeacon Flags.
* @param[in] effectiveTxPowerIn
* UriBeacon Tx Power Level in dBm.
* @param[in] powerLevels[]
* Table of UriBeacon Tx Power Levels in dBm.
* @param[in] powerMode
* Currently effective power mode.
* @param[in] beaconPeriodIn
* The period in milliseconds that a UriBeacon packet is
* transmitted. A value of zero disables UriBeacon
* transmissions.
*/
URIBeacon2Service(BLEDevice &bleIn, const char *uriDataIn, uint8_t flagsIn = 0, int8_t effectiveTxPowerIn = 0, uint16_t beaconPeriodIn = 1000) :
URIBeaconConfigService(BLEDevice &bleIn,
const char *uriDataIn,
uint8_t flagsIn = 0,
const int8_t powerLevelsIn[NUM_POWER_MODES] = NULL,
TXPowerModes_t powerModeIn = TX_POWER_MODE_LOW,
uint16_t beaconPeriodIn = 1000) :
ble(bleIn),
payloadIndex(0),
serviceDataPayload(),
@ -64,45 +72,37 @@ public:
uriDataLength(0),
uriData(),
flags(flagsIn),
effectivePower(effectiveTxPowerIn),
powerLevels(),
beaconPeriod(Gap::MSEC_TO_ADVERTISEMENT_DURATION_UNITS(beaconPeriodIn)),
beaconPeriod(beaconPeriodIn),
lockedStateChar(lockedStateCharUUID, reinterpret_cast<uint8_t *>(&lockedState), 1, 1, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ),
uriDataChar(uriDataCharUUID,
uriData,
MAX_SIZE_URI_DATA_CHAR_VALUE,
MAX_SIZE_URI_DATA_CHAR_VALUE,
GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE),
uriDataChar(uriDataCharUUID, uriData, MAX_SIZE_URI_DATA_CHAR_VALUE, MAX_SIZE_URI_DATA_CHAR_VALUE,
GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE),
flagsChar(flagsCharUUID, &flags, 1, 1, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE),
txPowerLevelsChar(txPowerLevelsCharUUID,
reinterpret_cast<uint8_t *>(powerLevels),
NUM_POWER_MODES * sizeof(int8_t),
NUM_POWER_MODES * sizeof(int8_t),
txPowerLevelsChar(txPowerLevelsCharUUID, reinterpret_cast<uint8_t *>(powerLevels), sizeof(powerLevels), sizeof(powerLevels),
GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE),
txPowerModeChar(txPowerModeCharUUID, reinterpret_cast<uint8_t *>(&txPowerMode), sizeof(uint8_t), sizeof(uint8_t),
GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE),
beaconPeriodChar(beaconPeriodCharUUID, reinterpret_cast<uint8_t *>(&beaconPeriod), 2, 2,
GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE),
resetChar(resetCharUUID, reinterpret_cast<uint8_t *>(&resetFlag), 1, 1,
GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE)
resetChar(resetCharUUID, reinterpret_cast<uint8_t *>(&resetFlag), 1, 1, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE)
{
if ((uriDataIn == NULL) || ((uriDataLength = strlen(uriDataIn)) == 0) || (uriDataLength > MAX_SIZE_URI_DATA_CHAR_VALUE)) {
return;
}
strcpy(reinterpret_cast<char *>(uriData), uriDataIn);
configure();
if (initSucceeded) {
/* Preserve the originals to be able to reset() upon request. */
memcpy(originalURIData, uriDataIn, MAX_SIZE_URI_DATA_CHAR_VALUE);
originalFlags = flagsIn;
originalEffectiveTxPower = effectiveTxPowerIn;
originalBeaconPeriod = beaconPeriodIn;
if (powerLevelsIn != NULL) {
memcpy(powerLevels, powerLevelsIn, sizeof(powerLevels));
updateTxPowerLevelsCharacteristic();
}
configureGAP();
GattCharacteristic *charTable[] = {&lockedStateChar, &uriDataChar, &flagsChar, &txPowerLevelsChar, &beaconPeriodChar, &resetChar};
GattService beaconControlService(URIBeacon2ControlServiceUUID, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
ble.addService(beaconControlService);
ble.onDataWritten(this, &URIBeacon2Service::onDataWritten);
ble.onDataWritten(this, &URIBeaconConfigService::onDataWritten);
}
bool configuredSuccessfully(void) const {
@ -133,22 +133,26 @@ public:
*/
void setFlags(uint8_t flagsIn) {
flags = flagsIn;
configure();
configureGAP();
updateFlagsCharacteristic();
}
/**
* Update the txPower for a particular mode in the powerLevels table.
* Update the txPowerLevels table.
*/
void setTxPowerLevel(TXPowerModes_t mode, int8_t txPowerIn) {
powerLevels[mode] = txPowerIn;
void setTxPowerLevels(const int8_t powerLevelsIn[NUM_POWER_MODES]) {
memcpy(powerLevels, powerLevelsIn, sizeof(powerLevels));
configureGAP();
updateTxPowerLevelsCharacteristic();
}
/**
* Set the effective power mode from one of the values in the powerLevels tables.
*/
void useTxPowerMode(TXPowerModes_t mode) {
effectivePower = powerLevels[mode];
configure();
void setTxPowerMode(TXPowerModes_t mode) {
txPowerMode = mode;
configureGAP();
updateTxPowerModeCharacteristic();
}
/**
@ -158,35 +162,40 @@ public:
*/
void setBeaconPeriod(uint16_t beaconPeriodIn) {
beaconPeriod = beaconPeriodIn;
configure();
configureGAP();
updateBeaconPeriodCharacteristic();
}
private:
/**
* Setup the advertisement payload and GAP settings.
*/
void configure(void) {
void configureGAP(void) {
const uint8_t BEACON_UUID[] = {0xD8, 0xFE};
payloadIndex = 0;
payloadIndex = 0;
serviceDataPayload[payloadIndex++] = BEACON_UUID[0];
serviceDataPayload[payloadIndex++] = BEACON_UUID[1];
serviceDataPayload[payloadIndex++] = flags;
serviceDataPayload[payloadIndex++] = effectivePower;
serviceDataPayload[payloadIndex++] = powerLevels[txPowerMode];
const char *urlData = reinterpret_cast<char *>(uriData);
size_t sizeofURLData = uriDataLength;
size_t encodedBytes = encodeURISchemePrefix(urlData, sizeofURLData) + encodeURI(urlData, sizeofURLData);
const char *urlData = reinterpret_cast<char *>(uriData);
size_t sizeofURLData = uriDataLength;
size_t encodedBytes = encodeURISchemePrefix(urlData, sizeofURLData) + encodeURI(urlData, sizeofURLData);
ble.clearAdvertisingPayload();
ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, BEACON_UUID, sizeof(BEACON_UUID));
ble.accumulateAdvertisingPayload(GapAdvertisingData::SERVICE_DATA, serviceDataPayload, encodedBytes + 4);
ble.setAdvertisingInterval(beaconPeriod);
ble.setTxPower(effectivePower);
ble.setAdvertisingInterval(Gap::MSEC_TO_ADVERTISEMENT_DURATION_UNITS(beaconPeriod));
ble.setTxPower(powerLevels[txPowerMode]);
}
size_t encodeURISchemePrefix(const char *&urldata, size_t &sizeofURLData) {
if (!sizeofURLData) {
return 0;
}
const char *prefixes[] = {
"http://www.",
"https://www.",
@ -195,15 +204,15 @@ private:
"urn:uuid:"
};
size_t encodedBytes = 0;
size_t encodedBytes = 0;
const size_t NUM_PREFIXES = sizeof(prefixes) / sizeof(char *);
for (unsigned i = 0; i < NUM_PREFIXES; i++) {
size_t prefixLen = strlen(prefixes[i]);
if (strncmp(urldata, prefixes[i], prefixLen) == 0) {
serviceDataPayload[payloadIndex++] = i;
encodedBytes = 1;
encodedBytes = 1;
urldata += prefixLen;
urldata += prefixLen;
sizeofURLData -= prefixLen;
break;
}
@ -264,16 +273,11 @@ private:
return encodedBytes;
}
/**
* This callback allows the DFU service to receive the initial trigger to
* handover control to the bootloader; but first the application is given a
* chance to clean up.
*/
virtual void onDataWritten(const GattCharacteristicWriteCBParams *params) {
void onDataWritten(const GattCharacteristicWriteCBParams *params) {
if (params->charHandle == uriDataChar.getValueAttribute().getHandle()) {
if (lockedState) { /* When locked, the device isn't allowed to update the uriData characteristic. */
/* Restore GATT database with previous value. */
ble.updateCharacteristicValue(uriDataChar.getValueAttribute().getHandle(), uriData, uriDataLength);
updateURIDataCharacteristic();
return;
}
@ -287,7 +291,7 @@ private:
} else if (params->charHandle == flagsChar.getValueAttribute().getHandle()) {
if (lockedState) { /* When locked, the device isn't allowed to update the characteristic. */
/* Restore GATT database with previous value. */
ble.updateCharacteristicValue(flagsChar.getValueAttribute().getHandle(), &flags, 1 /* size */);
updateFlagsCharacteristic();
return;
} else {
flags = *(params->data);
@ -295,38 +299,77 @@ private:
} else if (params->charHandle == txPowerLevelsChar.getValueAttribute().getHandle()) {
if (lockedState) { /* When locked, the device isn't allowed to update the characteristic. */
/* Restore GATT database with previous value. */
ble.updateCharacteristicValue(txPowerLevelsChar.getValueAttribute().getHandle(), reinterpret_cast<uint8_t *>(powerLevels), NUM_POWER_MODES * sizeof(int8_t));
updateTxPowerLevelsCharacteristic();
return;
} else {
memcpy(powerLevels, params->data, NUM_POWER_MODES * sizeof(int8_t));
}
} else if (params->charHandle == txPowerModeChar.getValueAttribute().getHandle()) {
if (lockedState) { /* When locked, the device isn't allowed to update the characteristic. */
/* Restore GATT database with previous value. */
updateTxPowerModeCharacteristic();
return;
} else {
txPowerMode = *reinterpret_cast<const TXPowerModes_t *>(params->data);
}
} else if (params->charHandle == beaconPeriodChar.getValueAttribute().getHandle()) {
if (lockedState) { /* When locked, the device isn't allowed to update the characteristic. */
/* Restore GATT database with previous value. */
ble.updateCharacteristicValue(beaconPeriodChar.getValueAttribute().getHandle(), reinterpret_cast<uint8_t *>(&beaconPeriod), sizeof(uint16_t));
updateBeaconPeriodCharacteristic();
return;
} else {
beaconPeriod = *((uint16_t *)(params->data));
}
} else if (params->charHandle == resetChar.getValueAttribute().getHandle()) {
resetOriginals();
resetDefaults();
}
configure();
configureGAP();
ble.setAdvertisingPayload();
}
void resetOriginals(void) {
memcpy(uriData, originalURIData, MAX_SIZE_URI_DATA_CHAR_VALUE);
void resetDefaults(void) {
lockedState = false;
uriDataLength = 0;
memset(uriData, 0, MAX_SIZE_URI_DATA_CHAR_VALUE);
flags = 0;
memset(powerLevels, 0, sizeof(powerLevels));
flags = originalFlags;
effectivePower = originalEffectiveTxPower;
beaconPeriod = originalBeaconPeriod;
txPowerMode = TX_POWER_MODE_LOW;
beaconPeriod = 0;
updateGATT();
}
void updateGATT(void) {
updateLockedStateCharacteristic();
updateURIDataCharacteristic();
updateFlagsCharacteristic();
updateBeaconPeriodCharacteristic();
updateTxPowerLevelsCharacteristic();
updateTxPowerModeCharacteristic();
}
void updateLockedStateCharacteristic(void) {
ble.updateCharacteristicValue(lockedStateChar.getValueAttribute().getHandle(), reinterpret_cast<uint8_t *>(&lockedState), sizeof(lockedState));
}
void updateURIDataCharacteristic(void) {
ble.updateCharacteristicValue(uriDataChar.getValueAttribute().getHandle(), uriData, uriDataLength);
ble.updateCharacteristicValue(flagsChar.getValueAttribute().getHandle(), &flags, 1 /* size */);
ble.updateCharacteristicValue(beaconPeriodChar.getValueAttribute().getHandle(), reinterpret_cast<uint8_t *>(&beaconPeriod), sizeof(uint16_t));
}
configure();
void updateFlagsCharacteristic(void) {
ble.updateCharacteristicValue(flagsChar.getValueAttribute().getHandle(), &flags, 1 /* size */);
}
void updateBeaconPeriodCharacteristic(void) {
ble.updateCharacteristicValue(beaconPeriodChar.getValueAttribute().getHandle(), reinterpret_cast<uint8_t *>(&beaconPeriod), sizeof(uint16_t));
}
void updateTxPowerModeCharacteristic(void) {
ble.updateCharacteristicValue(txPowerModeChar.getValueAttribute().getHandle(), reinterpret_cast<uint8_t *>(&txPowerMode), sizeof(uint8_t));
}
void updateTxPowerLevelsCharacteristic(void) {
ble.updateCharacteristicValue(txPowerLevelsChar.getValueAttribute().getHandle(), reinterpret_cast<uint8_t *>(powerLevels), NUM_POWER_MODES * sizeof(int8_t));
}
private:
@ -342,36 +385,33 @@ private:
}
private:
static const size_t MAX_SIZEOF_SERVICE_DATA_PAYLOAD = 27;
static const size_t MAX_SIZE_URI_DATA_CHAR_VALUE = 48;
static const size_t MAX_SIZEOF_SERVICE_DATA_PAYLOAD = 18; /* Uri Data must be between 0 and 18 bytes in length. */
static const size_t MAX_SIZE_URI_DATA_CHAR_VALUE = 48; /* This is chosen arbitrarily. It should be large enough
* to hold any reasonable uncompressed URI. */
private:
BLEDevice &ble;
BLEDevice &ble;
size_t payloadIndex;
uint8_t serviceDataPayload[MAX_SIZEOF_SERVICE_DATA_PAYLOAD];
bool initSucceeded;
size_t payloadIndex;
uint8_t serviceDataPayload[MAX_SIZEOF_SERVICE_DATA_PAYLOAD];
bool initSucceeded;
bool lockedState;
uint16_t uriDataLength;
uint8_t uriData[MAX_SIZE_URI_DATA_CHAR_VALUE];
uint8_t flags;
int8_t effectivePower;
int8_t powerLevels[NUM_POWER_MODES];
uint16_t beaconPeriod;
bool resetFlag;
bool lockedState;
uint16_t uriDataLength;
uint8_t uriData[MAX_SIZE_URI_DATA_CHAR_VALUE];
uint8_t flags;
int8_t powerLevels[NUM_POWER_MODES];
TXPowerModes_t txPowerMode;
uint16_t beaconPeriod;
bool resetFlag;
uint8_t originalURIData[MAX_SIZE_URI_DATA_CHAR_VALUE];
uint8_t originalFlags;
int8_t originalEffectiveTxPower;
uint16_t originalBeaconPeriod;
GattCharacteristic lockedStateChar;
GattCharacteristic uriDataChar;
GattCharacteristic flagsChar;
GattCharacteristic txPowerLevelsChar;
GattCharacteristic beaconPeriodChar;
GattCharacteristic resetChar;
GattCharacteristic lockedStateChar;
GattCharacteristic uriDataChar;
GattCharacteristic flagsChar;
GattCharacteristic txPowerLevelsChar;
GattCharacteristic txPowerModeChar;
GattCharacteristic beaconPeriodChar;
GattCharacteristic resetChar;
};
#endif /* #ifndef __BLE_URI_BEACON_2_SERVICE_H__*/
#endif /* #ifndef __BLE_URI_BEACON_CONFIG_SERVICE_H__*/