Merge pull request #2029 from adustm/b_fix_MBED_16_STM32F4

Fix #2027 Add timeinfo.tm_isdst = -1 to pass MBED_16 test with IAR.

Author: 0xc0170

hal/targets/hal/TARGET_STM/TARGET_STM32F1/rtc_api.c

@@ -163,6 +163,8 @@ time_t rtc_read(void)
     timeinfo.tm_hour = timeStruct.Hours;
     timeinfo.tm_min  = timeStruct.Minutes;
     timeinfo.tm_sec  = timeStruct.Seconds;
+    // Daylight Saving Time information is not available
+    timeinfo.tm_isdst  = -1;
 
     // Convert to timestamp
     time_t t = mktime(&timeinfo);

hal/targets/hal/TARGET_STM/TARGET_STM32F3/rtc_api.c

@@ -182,6 +182,8 @@ time_t rtc_read(void)
     timeinfo.tm_hour = timeStruct.Hours;
     timeinfo.tm_min  = timeStruct.Minutes;
     timeinfo.tm_sec  = timeStruct.Seconds;
+    // Daylight Saving Time information is not available
+    timeinfo.tm_isdst  = -1;
 
     // Convert to timestamp
     time_t t = mktime(&timeinfo);

hal/targets/hal/TARGET_STM/TARGET_STM32F4/rtc_api.c

@@ -182,6 +182,8 @@ time_t rtc_read(void)
     timeinfo.tm_hour = timeStruct.Hours;
     timeinfo.tm_min  = timeStruct.Minutes;
     timeinfo.tm_sec  = timeStruct.Seconds;
+    // Daylight Saving Time information is not available
+    timeinfo.tm_isdst  = -1;
 
     // Convert to timestamp
     time_t t = mktime(&timeinfo);

hal/targets/hal/TARGET_STM/TARGET_STM32F7/rtc_api.c

@@ -182,6 +182,8 @@ time_t rtc_read(void)
     timeinfo.tm_hour = timeStruct.Hours;
     timeinfo.tm_min  = timeStruct.Minutes;
     timeinfo.tm_sec  = timeStruct.Seconds;
+    // Daylight Saving Time information is not available
+    timeinfo.tm_isdst  = -1;
 
     // Convert to timestamp
     time_t t = mktime(&timeinfo);