AN4101

LIN demonstration software

Doc ID 23127 Rev 1

17/21

lcd

This module contains functions to drive the LCD display.

delay, icc_measure, lowpower

These modules are used for low-power modes. They are used by a hidden test mode, and

are not used in this demonstration software. Please refer to AN4102 for a description of

these modules.

stm8l15x_it

This module contains the following interrupt routines:

●

External interrupt of the pin1 routine, and update of the UserButton1 software flag,

when a falling edge is detected on the PE1 port

●

External interrupt of the pin2 routine, and update of the UserButton2 software flag,

when a falling edge is detected on the PE2 port

●

External interrupt of the pin6 routine, which is not activated in the demonstration

software (test mode only)

●

TIM4 interrupt routine, which sets timebase ticks for LIN, CAN (not used in the

demonstration software), application, and L99PM62GXP watchdog refresh

●

USART receive/error interrupt routine, which implements the algorithm described in

Section 6.2.2: LINUART interrupt

7.3.3

STM8L15x/16x standard peripheral library modules

The demonstration software is based on the STM8L15x/16x standard peripheral library

version 1.5.0, dated May 2011.

The following driver modules are used:

●

stm8l15x_flash.c, used for test mode only

●

stm8s_adc.c, used for test mode only

●

stm8l15x_exti.c, for the external interrupts on pin1 and 2 (USER1 and USER2

buttons)

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stm8s_clk.c, for configuring clocks and enabling HSE

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stm8s_gpio.c, for initializing, reading and updating all ports

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stm8s_spi.c, for SPI communication with the L99PM62GXP device

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stm8s_lcd.c, for SPI communication with the L99PM62GXP device

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stm8s_tim4.c, for generating a 1 ms timebase

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stm8s_usart.c, for initializing USART