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Code Issues Releases Wiki Activity

[esp32_ble_server] Create custom services, characteristics and descriptors (#7009)

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Co-authored-by: Clyde Stubbs <2366188+clydebarrow@users.noreply.github.com>
This commit is contained in:
Rodrigo Martín
2025-01-28 12:00:28 +01:00
committed by GitHub
parent dd18a219db
commit f7f8bf4da4
26 changed files with 1221 additions and 342 deletions
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30
esphome/components/esp32_ble_server/ble_descriptor.cpp
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@@ -12,11 +12,19 @@ namespace esp32_ble_server {
static const char *const TAG = "esp32_ble_server.descriptor";
BLEDescriptor::BLEDescriptor(ESPBTUUID uuid, uint16_t max_len) {
static RAMAllocator<uint8_t> descriptor_allocator{}; // NOLINT
BLEDescriptor::BLEDescriptor(ESPBTUUID uuid, uint16_t max_len, bool read, bool write) {
this->uuid_ = uuid;
this->value_.attr_len = 0;
this->value_.attr_max_len = max_len;
this->value_.attr_value = (uint8_t *) malloc(max_len); // NOLINT
this->value_.attr_value = descriptor_allocator.allocate(max_len);
if (read) {
this->permissions_ |= ESP_GATT_PERM_READ;
}
if (write) {
this->permissions_ |= ESP_GATT_PERM_WRITE;
}
}
BLEDescriptor::~BLEDescriptor() { free(this->value_.attr_value); } // NOLINT
@@ -38,14 +46,15 @@ void BLEDescriptor::do_create(BLECharacteristic *characteristic) {
this->state_ = CREATING;
}
void BLEDescriptor::set_value(const std::string &value) { this->set_value((uint8_t *) value.data(), value.length()); }
void BLEDescriptor::set_value(const uint8_t *data, size_t length) {
void BLEDescriptor::set_value(std::vector<uint8_t> buffer) {
size_t length = buffer.size();
if (length > this->value_.attr_max_len) {
ESP_LOGE(TAG, "Size %d too large, must be no bigger than %d", length, this->value_.attr_max_len);
return;
}
this->value_.attr_len = length;
memcpy(this->value_.attr_value, data, length);
memcpy(this->value_.attr_value, buffer.data(), length);
}
void BLEDescriptor::gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if,
@@ -61,10 +70,13 @@ void BLEDescriptor::gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_
break;
}
case ESP_GATTS_WRITE_EVT: {
if (this->handle_ == param->write.handle) {
this->value_.attr_len = param->write.len;
memcpy(this->value_.attr_value, param->write.value, param->write.len);
}
if (this->handle_ != param->write.handle)
break;
this->value_.attr_len = param->write.len;
memcpy(this->value_.attr_value, param->write.value, param->write.len);
this->emit_(BLEDescriptorEvt::VectorEvt::ON_WRITE,
std::vector<uint8_t>(param->write.value, param->write.value + param->write.len),
param->write.conn_id);
break;
}
default: