ST STM32L1 Series Application Note page 7

AN3413
When the used push button is pressed again, the power consumption measurement
functions are launched. These functions consist of configuring the device for each low
power consumption mode and then measuring and displaying the result on the LCD panel.
BAR0 to BAR3 are used by the application to indicate ongoing measurements as shown in
Table 1.
In order to save power during the I
switched off. Once the measurement is performed the LCD is switched on to display the
power consumption value.
VDD / Linear sensor / Touch buttons
Run mode / Sleep mode
Figure 3. Function Change state diagram
reset
STANDBY
IDD
STOP
IDD
LPRUN
LPSLEEP
IDD
measurement in Stop mode without LCD, the LCD is
DD
Table 1. Bars and LCD display linked to functions
Function
DocID018933 Rev 2
START
VDD
meas
TOUCH
LINEAR
SENSOR
User button
pressed
TOUCHKEYS
RUN
SLEEP
IDD
Application description
MS19812V1
Bars
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