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AN3137

Source code examples

Doc ID 16983 Rev 3

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Appendix A

Source code examples

A.1

Project code example

A firmware package is linked with this document. It contains source codes in C-language

which gives examples of some of the precision improvement methods described in this

application note. This complete project is designed for the ST Visual Develop (STVD)

development environment and Cosmic/Raisonance compiler and using the STM8L1526

evaluation board. With these examples you can see how the methods are implemented in

practice and you can test them by comparing ADC precision with improvement methods and

without them.

Package name: STM8L_ADC_improvement.zip

Project name: STM8L_ADCPrecisionImprovement.stw

A.2

Source code description

The example consists of a complete STVD project. This project contains source codes in

files:

main.c

main program file (MCU initialization, main program loop)

ADCAveraging.c

ADCCalibration.c

ADCWhiteNoise.c

Filter50Hz.c

FFT.c

testing - each file for given ADC precision improvement method

(uses STM8L library)

mono_lcd.c

basic driver for writing to LCD display (on the STM8L evaluation

board)

mallocR.c

malloc implementation for Raisonance compiler

ADCdriverFFT.c

ADCfncFFT.c

auxiliary functions for FFT implementation (hardware access and

general functions)

stm8_interrupt_vector.c

contains interrupt table address definition for Cosmic compiler

“*.h” files

corresponding header files for used C - files and definitions

/Library

subdirectory which contains complete STM8L15x library

(stm8l15x_adc.c, stm8l15x_beep.c, stm8l15x_clk.c,

stm8l15x_comp.c, stm8l15x_dac.c, stm8l15x_dma.c,

stm8l15x_exti.c, stm8l15x_flash.c, stm8l15x_gpio.c,

stm8l15x_i2c.c, stm8l15x_irtim.c, stm8l15x_itc.c,

stm8l15x_iwdg.c, stm8l15x_lcd.c, stm8l15x_pwr.c,

stm8l15x_rst.c, stm8l15x_rtc.c, stm8l15x_spi.c,

stm8l15x_syscfg.c, stm8l15x_tim1.c, stm8l15x_tim2.c,

stm8l15x_tim3.c, stm8l15x_tim4.c, stm8l15x_usart.c,

stm8l15x_wfe.c, stm8l15x_wwdg.c)

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