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#include "badge/ble.h"
#include <NimBLEDevice.h>
#include "badge/config.h"
#include "badge/log.h"
#include <string>
using de::uvok::badge::DisplayIndicator;
static NimBLEServer *server;
static NimBLEAdvertising *pAdvertising;
static NimBLECharacteristic *selectImageCharacteristic;
static NimBLECharacteristic *selectTextCharacteristic;
template <typename T> struct CharacteristicPoll
{
volatile bool changed;
T value;
};
static CharacteristicPoll<uint8_t> select_image_value_changed;
static CharacteristicPoll<std::string> select_text_changed;
static volatile DisplayIndicator ble_indicator = DisplayIndicator::Uninit;
#define IMAGE_DATA(_, display) display
const char *templates[] = {
#include "./images.cfg"
};
class BadgeServerCallbacks : public NimBLEServerCallbacks
{
void onConnect(NimBLEServer *pServer, NimBLEConnInfo &connInfo) override
{
LOG_F("Connected!\n");
ble_indicator = DisplayIndicator::Connected;
NimBLEServerCallbacks::onConnect(pServer, connInfo);
}
void onDisconnect(NimBLEServer *pServer, NimBLEConnInfo &connInfo, int reason) override
{
LOG_F("Disconnected!\n");
ble_indicator = DisplayIndicator::None;
NimBLEServerCallbacks::onDisconnect(pServer, connInfo, reason);
}
} badgeServerCallbacks;
class BadgeSelectorCallbacks : public NimBLECharacteristicCallbacks
{
void onWrite(NimBLECharacteristic *pCharacteristic, NimBLEConnInfo &connInfo) override
{
NimBLECharacteristicCallbacks::onWrite(pCharacteristic, connInfo);
if (pCharacteristic == selectImageCharacteristic)
{
LOG_F("Write!");
const char *val = pCharacteristic->getValue().c_str();
char *end = nullptr;
long newVal = strtol(val, &end, 10);
String defVal("0");
if (end == nullptr || end == val)
{
LOG_F("Error parsing value\n");
pCharacteristic->setValue(defVal);
(void)pCharacteristic->notify(defVal, BLE_HS_CONN_HANDLE_NONE);
}
else if (newVal >= ARRAY_SIZE(templates))
{
LOG_F("Value out of range: %ld\n", newVal);
pCharacteristic->setValue(defVal);
(void)pCharacteristic->notify(defVal, BLE_HS_CONN_HANDLE_NONE);
}
else
{
LOG_F("Value set to %ld\n", newVal);
select_image_value_changed.value = newVal;
select_image_value_changed.changed = true;
}
}
else if (pCharacteristic == selectTextCharacteristic)
{
//
auto val = pCharacteristic->getValue().c_str();
if (val == nullptr)
{
return;
}
std::string newText = val;
select_text_changed.value = newText;
select_text_changed.changed = true;
LOG_F("Received new text: %s\n", newText.c_str());
}
}
} badgeSelectorCallbacks;
void de::uvok::badge::ble_init()
{
NimBLEDevice::init("Espadge");
server = NimBLEDevice::createServer();
server->setCallbacks(&badgeServerCallbacks);
NimBLEService *service = new NimBLEService("ca260000-b4bb-46b2-bd06-b7b7a61ea990");
// read/write current
selectImageCharacteristic =
service->createCharacteristic("ca260001-b4bb-46b2-bd06-b7b7a61ea990",
NIMBLE_PROPERTY::READ | NIMBLE_PROPERTY::WRITE | NIMBLE_PROPERTY::NOTIFY);
selectImageCharacteristic->setValue("0");
selectImageCharacteristic->setCallbacks(&badgeSelectorCallbacks);
// get pictures
auto call = service->createCharacteristic("ca260002-b4bb-46b2-bd06-b7b7a61ea990", NIMBLE_PROPERTY::READ);
String s{};
for (int i = 0; i < ARRAY_SIZE(templates); i++)
{
char tmp[32];
snprintf(tmp, sizeof(tmp), "%d-%s;", i, templates[i]);
s.concat(tmp);
}
call->setValue(s.c_str());
// write QR code
selectTextCharacteristic =
service->createCharacteristic("ca260003-b4bb-46b2-bd06-b7b7a61ea990",
NIMBLE_PROPERTY::READ | NIMBLE_PROPERTY::WRITE | NIMBLE_PROPERTY::NOTIFY);
selectTextCharacteristic->setValue("");
selectTextCharacteristic->setCallbacks(&badgeSelectorCallbacks);
const uint16_t mtuLen = max<uint16_t>(s.length() + 16, 256);
NimBLEDevice::setMTU(mtuLen);
server->addService(service);
pAdvertising = NimBLEDevice::getAdvertising();
pAdvertising->setName("NimBLE Badge");
pAdvertising->setManufacturerData("\xff\xffuvok");
pAdvertising->setAdvertisingCompleteCallback([](NimBLEAdvertising *) {
LOG_F("Finished advertising\n");
ble_indicator = DisplayIndicator::None;
});
server->start();
}
bool de::uvok::badge::ble_is_active()
{
return pAdvertising->isAdvertising() || server->getConnectedCount() > 0;
// ???? NimBLEDevice::getConnectedClients().size() > 0;
}
void de::uvok::badge::ble_advertise()
{
if (!pAdvertising->isAdvertising())
{
Serial.println("Long press detected. Starting advertising...");
pAdvertising->start(10000);
ble_indicator = DisplayIndicator::Advertising;
}
}
de::uvok::badge::BlePollResult de::uvok::badge::ble_poll()
{
if (select_image_value_changed.changed)
{
const uint8_t val = select_image_value_changed.value;
select_image_value_changed.changed = false;
return BlePollResult::MakeTemplate(val);
}
if (select_text_changed.changed)
{
const std::string val = select_text_changed.value;
select_text_changed.changed = false;
return BlePollResult::MakeText(val);
}
if (ble_indicator != DisplayIndicator::Uninit)
{
DisplayIndicator ind = ble_indicator;
ble_indicator = DisplayIndicator::Uninit;
return BlePollResult::MakeIndicator(ind);
}
return BlePollResult::MakeEmpty();
}
void de::uvok::badge::ble_set_image(uint8_t image)
{
LOG_F("Notify BLE: set image to %d\n", image);
String s(image);
selectImageCharacteristic->setValue(s);
(void)selectImageCharacteristic->notify(s, BLE_HS_CONN_HANDLE_NONE);
}
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