add CTS local time characteristic and use it to provide UTC in DateTimeController
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@ -85,21 +85,11 @@ int CurrentTimeClient::OnCurrentTimeReadResult(uint16_t conn_handle, const ble_g
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// TODO check that attribute->handle equals the handle discovered in OnCharacteristicDiscoveryEvent
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CtsData result;
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os_mbuf_copydata(attribute->om, 0, sizeof(CtsData), &result);
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NRF_LOG_INFO("Received data: %d-%d-%d %d:%d:%d",
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result.year,
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result.month,
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result.dayofmonth,
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result.hour,
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result.minute,
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result.second);
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dateTimeController.SetTime(result.year,
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result.month,
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result.dayofmonth,
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0,
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result.hour,
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result.minute,
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result.second,
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nrf_rtc_counter_get(portNRF_RTC_REG));
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uint16_t year = ((uint16_t) result.year_MSO << 8) + result.year_LSO;
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NRF_LOG_INFO("Received data: %d-%d-%d %d:%d:%d", year, result.month, result.dayofmonth, result.hour, result.minute, result.second);
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dateTimeController
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.SetTime(year, result.month, result.dayofmonth, 0, result.hour, result.minute, result.second, nrf_rtc_counter_get(portNRF_RTC_REG));
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} else {
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NRF_LOG_INFO("Error retrieving current time: %d", error->status);
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}
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@ -29,14 +29,16 @@ namespace Pinetime {
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private:
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typedef struct __attribute__((packed)) {
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uint16_t year;
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uint8_t year_LSO; // explicit byte ordering to be independent of machine order
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uint8_t year_MSO; // BLE GATT is little endian
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uint8_t month;
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uint8_t dayofmonth;
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uint8_t hour;
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uint8_t minute;
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uint8_t second;
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uint8_t millis;
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uint8_t reason;
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uint8_t dayofweek;
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uint8_t fractions256; // currently ignored
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uint8_t reason; // currently ignored, not that any host would set it anyway
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} CtsData;
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static constexpr uint16_t ctsServiceId {0x1805};
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@ -5,11 +5,23 @@
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using namespace Pinetime::Controllers;
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constexpr ble_uuid16_t CurrentTimeService::ctsUuid;
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constexpr ble_uuid16_t CurrentTimeService::ctChrUuid;
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constexpr ble_uuid16_t CurrentTimeService::ctsCtChrUuid;
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constexpr ble_uuid16_t CurrentTimeService::ctsLtChrUuid;
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int CTSCallback(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt* ctxt, void* arg) {
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auto cts = static_cast<CurrentTimeService*>(arg);
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return cts->OnTimeAccessed(conn_handle, attr_handle, ctxt);
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return cts->OnCurrentTimeServiceAccessed(conn_handle, attr_handle, ctxt);
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}
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int CurrentTimeService::OnCurrentTimeServiceAccessed(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt* ctxt) {
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switch (ble_uuid_u16(ctxt->chr->uuid)) {
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case ctsCurrentTimeCharId:
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return OnCurrentTimeAccessed(conn_handle, attr_handle, ctxt);
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case ctsLocalTimeCharId:
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return OnLocalTimeAccessed(conn_handle, attr_handle, ctxt);
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}
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return -1; // Unknown characteristic
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}
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void CurrentTimeService::Init() {
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@ -18,45 +30,69 @@ void CurrentTimeService::Init() {
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ASSERT(res == 0);
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res = ble_gatts_add_svcs(serviceDefinition);
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ASSERT(res == 0);
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}
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int CurrentTimeService::OnTimeAccessed(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt* ctxt) {
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int CurrentTimeService::OnCurrentTimeAccessed(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt* ctxt) {
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NRF_LOG_INFO("Setting time...");
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if (ctxt->op == BLE_GATT_ACCESS_OP_WRITE_CHR) {
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CtsData result;
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os_mbuf_copydata(ctxt->om, 0, sizeof(CtsData), &result);
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CtsCurrentTimeData result;
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int res = os_mbuf_copydata(ctxt->om, 0, sizeof(CtsCurrentTimeData), &result);
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if (res < 0) {
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NRF_LOG_ERROR("Error reading BLE Data writing to CTS Current Time (too little data)")
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return BLE_ATT_ERR_INVALID_ATTR_VALUE_LEN;
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}
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NRF_LOG_INFO("Received data: %d-%d-%d %d:%d:%d",
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result.year,
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result.month,
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result.dayofmonth,
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result.hour,
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result.minute,
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result.second);
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uint16_t year = ((uint16_t) result.year_MSO << 8) + result.year_LSO;
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m_dateTimeController.SetTime(result.year,
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result.month,
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result.dayofmonth,
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0,
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result.hour,
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result.minute,
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result.second,
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nrf_rtc_counter_get(portNRF_RTC_REG));
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NRF_LOG_INFO("Received data: %d-%d-%d %d:%d:%d", year, result.month, result.dayofmonth, result.hour, result.minute, result.second);
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m_dateTimeController
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.SetTime(year, result.month, result.dayofmonth, 0, result.hour, result.minute, result.second, nrf_rtc_counter_get(portNRF_RTC_REG));
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} else if (ctxt->op == BLE_GATT_ACCESS_OP_READ_CHR) {
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CtsData currentDateTime;
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currentDateTime.year = m_dateTimeController.Year();
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CtsCurrentTimeData currentDateTime;
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currentDateTime.year_LSO = m_dateTimeController.Year() & 0xff;
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currentDateTime.year_MSO = (m_dateTimeController.Year() >> 8) & 0xff;
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currentDateTime.month = static_cast<u_int8_t>(m_dateTimeController.Month());
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currentDateTime.dayofmonth = m_dateTimeController.Day();
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currentDateTime.hour = m_dateTimeController.Hours();
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currentDateTime.minute = m_dateTimeController.Minutes();
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currentDateTime.second = m_dateTimeController.Seconds();
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currentDateTime.millis = 0;
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currentDateTime.fractions256 = 0;
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int res = os_mbuf_append(ctxt->om, ¤tDateTime, sizeof(CtsData));
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int res = os_mbuf_append(ctxt->om, ¤tDateTime, sizeof(CtsCurrentTimeData));
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return (res == 0) ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
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}
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return 0;
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}
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int CurrentTimeService::OnLocalTimeAccessed(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt* ctxt) {
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NRF_LOG_INFO("Setting timezone...");
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if (ctxt->op == BLE_GATT_ACCESS_OP_WRITE_CHR) {
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CtsLocalTimeData result;
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int res = os_mbuf_copydata(ctxt->om, 0, sizeof(CtsLocalTimeData), &result);
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if (res < 0) {
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NRF_LOG_ERROR("Error reading BLE Data writing to CTS Local Time (too little data)")
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return BLE_ATT_ERR_INVALID_ATTR_VALUE_LEN;
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}
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NRF_LOG_INFO("Received data: %d %d", result.timezone, result.dst);
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m_dateTimeController.SetTimeZone(result.timezone, result.dst);
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} else if (ctxt->op == BLE_GATT_ACCESS_OP_READ_CHR) {
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CtsLocalTimeData currentTimezone;
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currentTimezone.timezone = m_dateTimeController.TzOffset();
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currentTimezone.dst = m_dateTimeController.DstOffset();
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int res = os_mbuf_append(ctxt->om, ¤tTimezone, sizeof(currentTimezone));
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return (res == 0) ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
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}
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@ -64,11 +100,18 @@ int CurrentTimeService::OnTimeAccessed(uint16_t conn_handle, uint16_t attr_handl
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}
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CurrentTimeService::CurrentTimeService(DateTime& dateTimeController)
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: characteristicDefinition {{.uuid = &ctChrUuid.u,
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.access_cb = CTSCallback,
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: characteristicDefinition {
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{.uuid = &ctsLtChrUuid.u,
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.access_cb = CTSCallback,
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.arg = this,
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.flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ},
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{.uuid = &ctsCtChrUuid.u,
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.access_cb = CTSCallback,
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.arg = this,
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.flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ},
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{0}},
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serviceDefinition {
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{/* Device Information Service */
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@ -16,29 +16,40 @@ namespace Pinetime {
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CurrentTimeService(DateTime& dateTimeController);
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void Init();
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int OnTimeAccessed(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt* ctxt);
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int OnCurrentTimeServiceAccessed(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt* ctxt);
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int OnCurrentTimeAccessed(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt* ctxt);
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int OnLocalTimeAccessed(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt* ctxt);
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private:
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static constexpr uint16_t ctsId {0x1805};
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static constexpr uint16_t ctsCharId {0x2a2b};
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static constexpr uint16_t ctsCurrentTimeCharId {0x2a2b};
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static constexpr uint16_t ctsLocalTimeCharId {0x2a0f};
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static constexpr ble_uuid16_t ctsUuid {.u {.type = BLE_UUID_TYPE_16}, .value = ctsId};
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static constexpr ble_uuid16_t ctChrUuid {.u {.type = BLE_UUID_TYPE_16}, .value = ctsCharId};
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static constexpr ble_uuid16_t ctsCtChrUuid {.u {.type = BLE_UUID_TYPE_16}, .value = ctsCurrentTimeCharId};
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static constexpr ble_uuid16_t ctsLtChrUuid {.u {.type = BLE_UUID_TYPE_16}, .value = ctsLocalTimeCharId};
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struct ble_gatt_chr_def characteristicDefinition[2];
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struct ble_gatt_chr_def characteristicDefinition[3];
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struct ble_gatt_svc_def serviceDefinition[2];
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typedef struct __attribute__((packed)) {
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uint16_t year;
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uint8_t year_LSO; // BLE GATT is little endian
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uint8_t year_MSO;
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uint8_t month;
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uint8_t dayofmonth;
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uint8_t hour;
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uint8_t minute;
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uint8_t second;
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uint8_t millis;
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uint8_t reason;
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} CtsData;
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uint8_t dayofweek;
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uint8_t fractions256; // currently ignored
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uint8_t reason; // currently ignored, not that any host would set it anyway
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} CtsCurrentTimeData;
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typedef struct __attribute__((packed)) {
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uint8_t timezone;
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uint8_t dst;
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} CtsLocalTimeData;
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DateTime& m_dateTimeController;
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};
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@ -36,6 +36,7 @@ void DateTime::SetTime(uint16_t year,
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/* .tm_mon = */ month - 1,
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/* .tm_year = */ year - 1900,
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};
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tm.tm_isdst = -1; // Use DST value from local time zone
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currentDateTime = std::chrono::system_clock::from_time_t(std::mktime(&tm));
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@ -50,6 +51,11 @@ void DateTime::SetTime(uint16_t year,
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systemTask->PushMessage(System::Messages::OnNewTime);
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}
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void DateTime::SetTimeZone(uint8_t timezone, uint8_t dst) {
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tzOffset = timezone;
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dstOffset = dst;
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}
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void DateTime::UpdateTime(uint32_t systickCounter) {
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// Handle systick counter overflow
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uint32_t systickDelta = 0;
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@ -38,6 +38,18 @@ namespace Pinetime {
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uint8_t minute,
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uint8_t second,
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uint32_t systickCounter);
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/*
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* setter corresponding to the BLE Set Local Time characteristic.
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*
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* used to update difference between utc and local time (see UtcOffset())
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*
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* parameters are in quarters of an our. Following the BLE CTS specification,
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* timezone is expected to be constant over DST which will be reported in
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* dst field.
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*/
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void SetTimeZone(uint8_t timezone, uint8_t dst);
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void UpdateTime(uint32_t systickCounter);
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uint16_t Year() const {
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return year;
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@ -61,6 +73,42 @@ namespace Pinetime {
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return second;
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}
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/*
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* returns the offset between local time and UTC in quarters of an hour
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*
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* Availability of this field depends on wether the companion app
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* supports the BLE CTS Local Time Characteristic. Expect it to be 0
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* if not.
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*/
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uint8_t UtcOffset() const {
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return tzOffset + dstOffset;
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}
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/*
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* returns the offset between the (dst independent) local time zone and UTC
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* in quarters of an hour
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*
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* Availability of this field depends on wether the companion app
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* supports the BLE CTS Local Time Characteristic. Expect it to be 0
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* if not.
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*/
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uint8_t TzOffset() const {
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return tzOffset;
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}
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/*
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* returns the offset between the local time zone and local time
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* in quarters of an hour
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* if != 0, DST is in effect, if == 0 not.
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*
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* Availability of this field depends on wether the companion app
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* supports the BLE CTS Local Time Characteristic. Expect it to be 0
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* if not.
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*/
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uint8_t DstOffset() const {
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return dstOffset;
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}
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const char* MonthShortToString() const;
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const char* DayOfWeekShortToString() const;
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static const char* MonthShortToStringLow(Months month);
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@ -69,6 +117,9 @@ namespace Pinetime {
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std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> CurrentDateTime() const {
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return currentDateTime;
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}
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std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> UTCDateTime() const {
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return currentDateTime - std::chrono::seconds((tzOffset + dstOffset) * 15 * 60);
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}
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std::chrono::seconds Uptime() const {
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return uptime;
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}
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@ -85,6 +136,8 @@ namespace Pinetime {
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uint8_t hour = 0;
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uint8_t minute = 0;
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uint8_t second = 0;
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uint8_t tzOffset = 0;
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uint8_t dstOffset = 0;
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uint32_t previousSystickCounter = 0;
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std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> currentDateTime;
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