mirror of https://github.com/esphome/esphome.git
48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
#include "nfc_helpers.h"
|
|
|
|
namespace esphome {
|
|
namespace nfc {
|
|
|
|
static const char *const TAG = "nfc.helpers";
|
|
|
|
bool has_ha_tag_ndef(NfcTag &tag) { return !get_ha_tag_ndef(tag).empty(); }
|
|
|
|
std::string get_ha_tag_ndef(NfcTag &tag) {
|
|
if (!tag.has_ndef_message()) {
|
|
return std::string();
|
|
}
|
|
auto message = tag.get_ndef_message();
|
|
auto records = message->get_records();
|
|
for (const auto &record : records) {
|
|
std::string payload = record->get_payload();
|
|
size_t pos = payload.find(HA_TAG_ID_PREFIX);
|
|
if (pos != std::string::npos) {
|
|
return payload.substr(pos + sizeof(HA_TAG_ID_PREFIX) - 1);
|
|
}
|
|
}
|
|
return std::string();
|
|
}
|
|
|
|
std::string get_random_ha_tag_ndef() {
|
|
static const char ALPHANUM[] = "0123456789abcdef";
|
|
std::string uri = HA_TAG_ID_PREFIX;
|
|
for (int i = 0; i < 8; i++) {
|
|
uri += ALPHANUM[random_uint32() % (sizeof(ALPHANUM) - 1)];
|
|
}
|
|
uri += "-";
|
|
for (int j = 0; j < 3; j++) {
|
|
for (int i = 0; i < 4; i++) {
|
|
uri += ALPHANUM[random_uint32() % (sizeof(ALPHANUM) - 1)];
|
|
}
|
|
uri += "-";
|
|
}
|
|
for (int i = 0; i < 12; i++) {
|
|
uri += ALPHANUM[random_uint32() % (sizeof(ALPHANUM) - 1)];
|
|
}
|
|
ESP_LOGD("pn7160", "Payload to be written: %s", uri.c_str());
|
|
return uri;
|
|
}
|
|
|
|
} // namespace nfc
|
|
} // namespace esphome
|