Figure 43. Thermometer Submenu Selected; Figure 44. Temperature Display - ST STM32303C-EVAL User Manual

UM1590 Running the demonstration

Figure 43. Thermometer submenu selected

Once the Temperature submenu has been selected by pressing the SEL push-button, the
temperature value is displayed in Celsius and Fahrenheit as shown in Figure 44.
Press KEY to return to the Thermometer submenu.

Figure 44. Temperature display

Exit:Pres&Hold KEY
The temperature variations can be monitored easily using the STM32 I2C SMBus feature.
This is managed by the SMBus Alert, which generates a dedicated interrupt informing the
system that the temperature is out of the selected range. This can be very useful when a
higher temperature needs an emergency action, as is the case in critical systems (motor
control, medical...).
If the temperature exceeds the high limit (TEMPERATURE_HIGH: High Limit Temperature),
the SMBus alert interrupt is generated and the warning message shown in Figure 45 is
displayed on the LCD screen.
Doc ID 023892 Rev 1 39/65