Extend sample to also set ManufacturerDate

Make the sample more complete by also setting ManufacturerDate to October 12. 2024 (today). I've already verified that it's possible to retrieve the same date back through IOCTL_BATTERY_QUERY_INFORMATION IOCTL calls on Windows.

Author: forderud

examples/UPS/UPS.ino

@@ -31,7 +31,7 @@ uint16_t iAvgTimeToEmpty = 7200;
 uint16_t iRemainTimeLimit = 600;
 int16_t  iDelayBe4Reboot = -1;
 int16_t  iDelayBe4ShutDown = -1;
-
+uint16_t iManufacturerDate = 0; // initialized in setup function
 byte iAudibleAlarmCtrl = 2; // 1 - Disabled, 2 - Enabled, 3 - Muted
 
 
@@ -92,6 +92,9 @@ void setup() {
   PowerDevice.setFeature(HID_PD_CPCTYGRANULARITY1, &bCapacityGranularity1, sizeof(bCapacityGranularity1));
   PowerDevice.setFeature(HID_PD_CPCTYGRANULARITY2, &bCapacityGranularity2, sizeof(bCapacityGranularity2));
 
+  uint16_t year = 2024, month = 10, day = 12;
+  iManufacturerDate = (year - 1980)*512 + month*32 + day; // from 4.2.6 Battery Settings in "Universal Serial Bus Usage Tables for HID Power Devices"
+  PowerDevice.setFeature(HID_PD_MANUFACTUREDATE, &iManufacturerDate, sizeof(iManufacturerDate));
 }
 
 void loop() {