AN3260 datasheet(12/24 Pages) STMICROELECTRONICS

12 / 24 page

Software description

AN3260

12/24

Doc ID 17836 Rev 1

4.2

Exclusion of the Standard STM8S standard firmware library

As this application uses optimized code, the stm8s.h file must be modified not include the

STM8S standard firmware library. This is done by commenting the following define

statement:

#define USE_STDPERIPH_DRIVER

4.3

Application software flowcharts

4.3.1

Main loop flowchart

The main loop code initializes the required features, unlocks data EEPROM programming

and calls the functions required to implement the general application algorithm.

To minimize the time drift of the software real time clock (see Section : Timer-triggered

acquisition), the HSE clock is used as the master clock source.

After the initialization phase is complete and informative messages are displayed on the

terminal window, the user is prompted to enter the minimum and maximum temperature

thresholds. As a consequence, the first time the State_Machine() function is called, it

directly enters the configuration mode (state = 1, see Section 4.3.3: State machine

flowchart).

Figure 4 shows the flowchart of the application software main loop.

AN3260 Datasheet(PDF) 12 Page - STMicroelectronics