Can someone give me any link for bare metal programming of LCD in stm8l discovery. Any help would be greatly appreciated

[VSrin]

..

[Vyacheslav Azarov]

Standard Peripheral Library have a good example relative to LCD. Details of LCD control you can extract from corresponding source file of this library. See application note also. https://www.st.com/content/ccc/resource/technical/document/application_note/0d/99/cb/9c/dc/73/42/52/CD00257713.pdf/files/CD00257713.pdf/jcr:content/translations/en.CD00257713.pdf

[VSrin]

I have a quick question? I use ST visual develop and I could not see my variables getting incremented if I set the variables as static.

#include <iostm8l.h>

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <stdint.h>

#include <math.h>

#include "defs.h"

static int click = 0;

void delay(unsigned long dd)

{

  unsigned long i;

  for (i=0;i<dd;i++) nop(); 

}

void RTC(void)

{

unsigned long j = 0;

PE_ODR |= 0x80; // led indication for reset 

if( click == 2) // reset module

{

click = 0;

 PC_ODR &= ~(1<<3); //pc3 in place of push button - turn it off here

 for(j = 0;j<20;j++)

 {

  delay(_250ms_); // 4.3 seconds in real

 }

}

if(click == 1) // on module

{

click++;

PC_ODR &= ~(1<<3); //turn it off

for(j = 0;j<8;j++)

 {

delay(_250ms_); // wait

 }

}

if (click == 0) // off module

{

PC_ODR &= ~(1<<3); //turn it off

click++;

 for(j = 0;j<8;j++)

 {

delay(_250ms_); // wait

 }

  PC_ODR |= (1<<3); // turn it on

 for(j = 0;j<8;j++)

 {

delay(_250ms_); // wait

 }

 PC_ODR &= ~(1<<3); //turn it off

 for(j = 0;j<8;j++)

 {

delay(_250ms_); // wait

 }

}

RTC_ISR2=0x00; // clear interrupt flags

}

void SetupTimers(void)

{

CLK_CRTCR=0x04; // use iternal LSI/1 clock @ ~38KHz

 RTC_WPR=0xCA;

RTC_WPR=0x53;

RTC_CR2=0x00; // disable wakeup timer for register update

while(!(RTC_ISR1 & 0x04));

  RTC_CR1=0x04; // set 1hz clk

RTC_WUTRH=0x00; // change here for time change

RTC_WUTRL=0x78; //2 min timer

RTC_CR3=0x00; 

RTC_CR2=0x44; // turn on timer and interrupt

RTC_WPR=0xFF; // lock the device

}

main()

{

CLK_DIVR = 0x00; // Set the frequency to 16Mhz

CLK_PCKENR2 = 0x07; // clock for timer1

 PC_DDR = 0x08; //direction input for push button

PC_CR1 = 0x08; //floating input pc3

PE_DDR = 0x80; // direction output for led

 PE_CR1 = 0x80; // fast push pull mode

SetupTimers();

_asm("rim\n"); // enable interrupt

while(1)

{

PC_ODR |= (1<<3); // turn it on

PE_ODR &= ~(0x80);

}

}

[VSrin]

The static click remains 0 all the time

[Vyacheslav Azarov]

STVD MCU simulator have some limitation of functionality. As example you must stimulate interrupts requests manually. To make the program understandable, best use the definitions from the Standard Peripheral Library.