Furi_hal_rtc: new function

applications/debug/unit_tests/furi_hal/furi_hal_tests.c

@@ -1,8 +1,11 @@
+#include "furi_hal_rtc.h"
+#include <stdint.h>
 #include <stdio.h>
 #include <furi.h>
 #include <furi_hal.h>
 #include <lp5562_reg.h>
 #include "../minunit.h"
+#include <stdlib.h>
 
 #define DATA_SIZE 4
 #define EEPROM_ADDRESS 0b10101000
@@ -211,6 +214,37 @@ MU_TEST(furi_hal_i2c_ext_eeprom) {
     }
 }
 
+MU_TEST(furi_hal_rtc_timestamp2datetime_min) {
+    uint32_t test_value = 0;
+    FuriHalRtcDateTime min_datetime_expected = {0, 0, 0, 1, 1, 1970, 0};
+
+    FuriHalRtcDateTime result = {0};
+    furi_hal_rtc_timestamp_to_datetime(test_value, &result);
+
+    mu_assert_mem_eq(&min_datetime_expected, &result, sizeof(result));
+}
+
+MU_TEST(furi_hal_rtc_timestamp2datetime_max) {
+    uint32_t test_value = UINT32_MAX;
+    FuriHalRtcDateTime max_datetime_expected = {6, 28, 15, 7, 2, 2106, 0};
+
+    FuriHalRtcDateTime result = {0};
+    furi_hal_rtc_timestamp_to_datetime(test_value, &result);
+
+    mu_assert_mem_eq(&max_datetime_expected, &result, sizeof(result));
+}
+
+MU_TEST(furi_hal_rtc_timestamp2datetime2timestamp) {
+    uint32_t test_value = random();
+
+    FuriHalRtcDateTime datetime = {0};
+    furi_hal_rtc_timestamp_to_datetime(test_value, &datetime);
+
+    uint32_t result = furi_hal_rtc_datetime_to_timestamp(&datetime);
+
+    mu_assert_int_eq(test_value, result);
+}
+
 MU_TEST_SUITE(furi_hal_i2c_int_suite) {
     MU_SUITE_CONFIGURE(&furi_hal_i2c_int_setup, &furi_hal_i2c_int_teardown);
     MU_RUN_TEST(furi_hal_i2c_int_1b);
@@ -224,8 +258,15 @@ MU_TEST_SUITE(furi_hal_i2c_ext_suite) {
     MU_RUN_TEST(furi_hal_i2c_ext_eeprom);
 }
 
+MU_TEST_SUITE(furi_hal_rtc_datetime_suite) {
+    MU_RUN_TEST(furi_hal_rtc_timestamp2datetime_min);
+    MU_RUN_TEST(furi_hal_rtc_timestamp2datetime_max);
+    MU_RUN_TEST(furi_hal_rtc_timestamp2datetime2timestamp);
+}
+
 int run_minunit_test_furi_hal() {
     MU_RUN_SUITE(furi_hal_i2c_int_suite);
     MU_RUN_SUITE(furi_hal_i2c_ext_suite);
+    MU_RUN_SUITE(furi_hal_rtc_datetime_suite);
     return MU_EXIT_CODE;
 }

targets/f18/api_symbols.csv

@@ -1261,6 +1261,7 @@ Function,+,furi_hal_rtc_set_log_level,void,uint8_t
 Function,+,furi_hal_rtc_set_pin_fails,void,uint32_t
 Function,+,furi_hal_rtc_set_register,void,"FuriHalRtcRegister, uint32_t"
 Function,+,furi_hal_rtc_sync_shadow,void,
+Function,+,furi_hal_rtc_timestamp_to_datetime,void,"uint32_t, FuriHalRtcDateTime*"
 Function,+,furi_hal_rtc_validate_datetime,_Bool,FuriHalRtcDateTime*
 Function,+,furi_hal_sd_get_card_state,FuriStatus,
 Function,+,furi_hal_sd_info,FuriStatus,FuriHalSdInfo*

targets/f7/api_symbols.csv

@@ -1427,6 +1427,7 @@ Function,+,furi_hal_rtc_set_log_level,void,uint8_t
 Function,+,furi_hal_rtc_set_pin_fails,void,uint32_t
 Function,+,furi_hal_rtc_set_register,void,"FuriHalRtcRegister, uint32_t"
 Function,+,furi_hal_rtc_sync_shadow,void,
+Function,+,furi_hal_rtc_timestamp_to_datetime,void,"uint32_t, FuriHalRtcDateTime*"
 Function,+,furi_hal_rtc_validate_datetime,_Bool,FuriHalRtcDateTime*
 Function,+,furi_hal_sd_get_card_state,FuriStatus,
 Function,+,furi_hal_sd_info,FuriStatus,FuriHalSdInfo*

targets/f7/furi_hal/furi_hal_rtc.c

@@ -424,6 +424,32 @@ uint32_t furi_hal_rtc_datetime_to_timestamp(FuriHalRtcDateTime* datetime) {
     return timestamp;
 }
 
+void furi_hal_rtc_timestamp_to_datetime(uint32_t timestamp, FuriHalRtcDateTime* datetime) {
+    uint32_t days = timestamp / FURI_HAL_RTC_SECONDS_PER_DAY;
+    uint32_t seconds_in_day = timestamp % FURI_HAL_RTC_SECONDS_PER_DAY;
+
+    datetime->year = FURI_HAL_RTC_EPOCH_START_YEAR;
+
+    while(days >= furi_hal_rtc_get_days_per_year(datetime->year)) {
+        days -= furi_hal_rtc_get_days_per_year(datetime->year);
+        (datetime->year)++;
+    }
+
+    datetime->month = 1;
+    while(days >= furi_hal_rtc_get_days_per_month(
+                      furi_hal_rtc_is_leap_year(datetime->year), datetime->month)) {
+        days -= furi_hal_rtc_get_days_per_month(
+            furi_hal_rtc_is_leap_year(datetime->year), datetime->month);
+        (datetime->month)++;
+    }
+
+    datetime->day = days + 1;
+    datetime->hour = seconds_in_day / FURI_HAL_RTC_SECONDS_PER_HOUR;
+    datetime->minute =
+        (seconds_in_day % FURI_HAL_RTC_SECONDS_PER_HOUR) / FURI_HAL_RTC_SECONDS_PER_MINUTE;
+    datetime->second = seconds_in_day % FURI_HAL_RTC_SECONDS_PER_MINUTE;
+}
+
 uint16_t furi_hal_rtc_get_days_per_year(uint16_t year) {
     return furi_hal_rtc_days_per_year[furi_hal_rtc_is_leap_year(year) ? 1 : 0];
 }

targets/furi_hal_include/furi_hal_rtc.h

@@ -252,13 +252,24 @@ uint32_t furi_hal_rtc_get_pin_fails();
 uint32_t furi_hal_rtc_get_timestamp();
 
 /** Convert DateTime to UNIX timestamp
+ * 
+ * @warning    Mind timezone when perform conversion
  *
- * @param      datetime  The datetime
+ * @param      datetime  The datetime (UTC)
  *
  * @return     UNIX Timestamp in seconds from UNIX epoch start
  */
 uint32_t furi_hal_rtc_datetime_to_timestamp(FuriHalRtcDateTime* datetime);
 
+/** Convert UNIX timestamp to DateTime
+ *
+ * @warning    Mind timezone when perform conversion
+ *
+ * @param[in]  timestamp  UNIX Timestamp in seconds from UNIX epoch start
+ * @param[out] datetime   The datetime (UTC)
+ */
+void furi_hal_rtc_timestamp_to_datetime(uint32_t timestamp, FuriHalRtcDateTime* datetime);
+
 /** Gets the number of days in the year according to the Gregorian calendar.
  *
  * @param year Input year.