1 files changed, 111 insertions, 0 deletions
diff --git a/src/components/ble/CurrentTimeClient.cpp b/src/components/ble/CurrentTimeClient.cpp
new file mode 100644
index 00000000..92f9374b
--- /dev/null
+++ b/src/components/ble/CurrentTimeClient.cpp
@@ -0,0 +1,111 @@
+#include <hal/nrf_rtc.h>
+#include "CurrentTimeClient.h"
+
+using namespace Pinetime::Controllers;
+
+constexpr ble_uuid16_t CurrentTimeClient::ctsServiceUuid;
+constexpr ble_uuid16_t CurrentTimeClient::currentTimeCharacteristicUuid;
+
+namespace {
+  int OnDiscoveryEventCallback(uint16_t conn_handle, const struct ble_gatt_error *error, const struct ble_gatt_svc *service, void *arg) {
+    auto client = static_cast<CurrentTimeClient *>(arg);
+    return client->OnDiscoveryEvent(conn_handle, error, service);
+  }
+
+  int OnCurrentTimeCharacteristicDiscoveredCallback(uint16_t conn_handle, const struct ble_gatt_error *error,
+                                                    const struct ble_gatt_chr *chr, void *arg) {
+    auto client = static_cast<CurrentTimeClient *>(arg);
+    return client->OnCharacteristicDiscoveryEvent(conn_handle, error, chr);
+  }
+
+  int CurrentTimeReadCallback(uint16_t conn_handle, const struct ble_gatt_error *error, struct ble_gatt_attr *attr, void *arg) {
+    auto client = static_cast<CurrentTimeClient *>(arg);
+    return client->OnCurrentTimeReadResult(conn_handle, error, attr);
+  }
+}
+
+CurrentTimeClient::CurrentTimeClient(DateTime &dateTimeController) : dateTimeController{dateTimeController} {
+
+}
+
+void CurrentTimeClient::Init() {
+
+}
+
+bool CurrentTimeClient::OnDiscoveryEvent(uint16_t connectionHandle, const ble_gatt_error *error,
+                                         const ble_gatt_svc *service) {
+  if (service == nullptr && error->status == BLE_HS_EDONE) {
+    if (isDiscovered) {
+      NRF_LOG_INFO("CTS found, starting characteristics discovery");
+
+      ble_gattc_disc_all_chrs(connectionHandle, ctsStartHandle, ctsEndHandle,
+                              OnCurrentTimeCharacteristicDiscoveredCallback, this);
+    } else {
+      NRF_LOG_INFO("CTS not found");
+      onServiceDiscovered(connectionHandle);
+    }
+    return true;
+  }
+
+  if (service != nullptr && ble_uuid_cmp(((ble_uuid_t *) &ctsServiceUuid), &service->uuid.u) == 0) {
+    NRF_LOG_INFO("CTS discovered : 0x%x - 0x%x", service->start_handle, service->end_handle);
+    isDiscovered = true;
+    ctsStartHandle = service->start_handle;
+    ctsEndHandle = service->end_handle;
+    return false;
+  }
+  return false;
+}
+
+int CurrentTimeClient::OnCharacteristicDiscoveryEvent(uint16_t conn_handle, const ble_gatt_error *error,
+                                                      const ble_gatt_chr *characteristic) {
+  if (characteristic == nullptr && error->status == BLE_HS_EDONE) {
+    if (isCharacteristicDiscovered) {
+      NRF_LOG_INFO("CTS Characteristic discovery complete, fetching time");
+      ble_gattc_read(conn_handle, currentTimeHandle, CurrentTimeReadCallback, this);
+    } else {
+      NRF_LOG_INFO("CTS Characteristic discovery unsuccessful");
+      onServiceDiscovered(conn_handle);
+    }
+
+    return 0;
+  }
+
+  if (characteristic != nullptr &&
+      ble_uuid_cmp(((ble_uuid_t *) &currentTimeCharacteristicUuid), &characteristic->uuid.u) == 0) {
+    NRF_LOG_INFO("CTS Characteristic discovered : 0x%x", characteristic->val_handle);
+    isCharacteristicDiscovered = true;
+    currentTimeHandle = characteristic->val_handle;
+  }
+  return 0;
+}
+
+int CurrentTimeClient::OnCurrentTimeReadResult(uint16_t conn_handle, const ble_gatt_error *error,
+                                               const ble_gatt_attr *attribute) {
+  if (error->status == 0) {
+    // TODO check that attribute->handle equals the handle discovered in OnCharacteristicDiscoveryEvent
+    CtsData result;
+    os_mbuf_copydata(attribute->om, 0, sizeof(CtsData), &result);
+    NRF_LOG_INFO("Received data: %d-%d-%d %d:%d:%d", result.year,
+                 result.month, result.dayofmonth,
+                 result.hour, result.minute, result.second);
+    dateTimeController.SetTime(result.year, result.month, result.dayofmonth,
+                               0, result.hour, result.minute, result.second, nrf_rtc_counter_get(portNRF_RTC_REG));
+  } else {
+    NRF_LOG_INFO("Error retrieving current time: %d", error->status);
+  }
+
+  onServiceDiscovered(conn_handle);
+  return 0;
+}
+
+void CurrentTimeClient::Reset() {
+  isDiscovered = false;
+  isCharacteristicDiscovered = false;
+}
+
+void CurrentTimeClient::Discover(uint16_t connectionHandle, std::function<void(uint16_t)> onServiceDiscovered) {
+  NRF_LOG_INFO("[CTS] Starting discovery");
+  this->onServiceDiscovered = onServiceDiscovered;
+  ble_gattc_disc_svc_by_uuid(connectionHandle, &ctsServiceUuid.u, OnDiscoveryEventCallback, this);
+}