STM8 MCUs

Posted on May 04, 2018 at 14:00Hi friends,I am using STM8L052C6 MCU  for my project  MPPT  and I work on register basis programming  so I generate complementary PWM (on TIM1_CH1 and  TIM1_CH1N)  and  get  ADC  value from ADC Channel 0 and 1 .These  are working individual fine . But I use both in a program  so complementary  does not come.I mean when I init  complementary PWM with dead time  on TIM1  it works and I init ADC and init complementary PWM  both then I get only ADC value and single PWM  but init complementary PWM  does not generate .Please help in my project.Thanks a lot.

Posted on April 18, 2018 at 13:13When performing multiple write block operations the device is freezing. I am unable to recover the device without a manual power off reset. I believe my code is correct. Could this be a driver issue? I am using IAR.Any help would be appreciated.Please see my code for this below:   /* Define flash programming Time*/   FLASH_SetProgrammingTime(FLASH_ProgramTime_Standard);   FLASH_Unlock(FLASH_MemType_Program);   /* Wait until Flash Program area unlocked flag is set*/   while (FLASH_GetFlagStatus(FLASH_FLAG_PUL) == RESET)   {}   //inactive_image_first_block   for (block_num=270; block_num <= 507 ; block_num++)   {            FLAS

Posted on May 02, 2018 at 09:34http://www.st.com/content/st_com/en/products/microcontrollers/stm8-8-bit-mcus/stm8s-series/stm8s103-105.html?querycriteria=productId=LN754On this page, the flash/ram should be 8k/1k on STM8S103F3 and STM8S103K3

Posted on May 01, 2018 at 12:39Hi.I was working with my new stm8s105 MCU trying to get started with the timers.But every time I use the command to display the time on the LCD the same number showed every time.I thought that the problem is my timer code but when I just put a number on the LCD to show it just showed an irrelevant number.I use the same LCD.h on LPC1768 and STM32F2 and just converted the same header.The only difference is that I used Keil compiler for them and now I'm using IAR.lcd_gotoxy(1,2);sprintf(buf,'%d',100);lcd_print(buf);delay_ms(1000);This is a simple code that must show 100 but it displays 12594>:(The characters are displayed properly.The problem is numbers.

Posted on April 27, 2018 at 19:52Hi.I wanted to know that for example how many clocks a while loop takes.Do you have any ideas or any articles on this matter?

Posted on April 24, 2018 at 15:46Please let me know if anyone faced this issue before. how to resolve it? I am using COSMIC compiler and ST VD

Posted on April 25, 2018 at 03:39Hello..I am using a circuit board using the STM8L052R8.This board generates the voltage to be applied to MCU after applying 4.8VDC voltage by using 3.3VDC regulator.IWDG and BOR are used in the firmware.However, when an ESD pulse is applied to the NRST pin of the STM8L052R8, the signal at the NRST pin remains LOW at any moment and does not rise to HIGH.To recover the state, short-circuit the 4.8VDC and NRST pin to recover.However, shorting 3.3 VDC and NRST pin will not recover.In other words, the NRST pin is not in the HIGH state but in the LOW state.How do I solve this problem?

Posted on April 23, 2018 at 03:59Hello,- MCU : STM8L101K3I am using Port A.2 for interrupt and Port D.2 for general gpio.GPIO_Init(GPIOA,GPIO_Pin_2, GPIO_Mode_In_FL_IT); EXTI_SetPinSensitivity(EXTI_Pin_2, EXTI_Trigger_Falling); GPIO_Init(GPIOD, GPIO_Pin_2, GPIO_Mode_Out_PP_High_Fast);In my scenario, Port D.2 is changed input to output mode per every 1sec.if(onesec) {   onesec = 0;    GPIO_Init(GPIOD, GPIO_Pin_2, GPIO_Mode_In_FL_No_IT); // all led off    if(redled)    {       GPIO_Init(GPIOD, GPIO_Pin_2, GPIO_Mode_Out_PP_High_Fast);       GPIO_ResetBits(GPIOD, GPIO_Pin_2); // red led on    }    else if(blueled)    {       GPIO_In

Posted on April 21, 2018 at 07:31Hi everybodyI have designed my own pcb stm8 based on discovery board stm8AF52 5v power I can program it easily without any problem but Vcap voltage is 2.4 instead 1.8 what is the problem here?thanks for your help in advance 

Posted on April 21, 2018 at 14:35Hello everyone,Very much I ask to respond who knows. Whether methods are applied of providing increased reliability of real-time timers, for example redundant coding or majority calculations. And what are the values of the duration of the fail-safe operation of the clock of STM8?Thanks in advance.#rtc #reliability #stm8

Posted on February 11, 2018 at 20:04Another comparison of C compilers for the STM8 About two years ago, I did a comparison of C compilers for the STM8. It can now be found at http://www.colecovision.eu/stm8/compilers-2016.shtml.I also redid the comparison and placed it at http://www.colecovision.eu/stm8/compilers.shtml.For Cosmic, SDCC, IAR the current versions of the compilers were used. Due to difficulties with Raisonance evaluation licenses, an older version of Raisonance was used.Quick summary of what happened since 2016: Cosmic and IAR improved a bit in various aspects. SDCC made huge progress. In mid-2016, code speed and size were weaknesses of SDCC. Now, for Dhryst

Posted on April 19, 2018 at 14:52Hello, i have an STM8L1526 board, and i don't success to connect with my computer. I use ST visual develop but it doesn't work. I want to use the STM8L152C6 to drive some of led on extern electronic plateform ( prototype). thks for your help

Posted on April 19, 2018 at 02:55I am trying to use STM8AF6266 to control the LED wiping sequence.PC1~PC7 connect to 7 branches of LEDs.By programming the flash, I was able to observe one-time wiping sequence, but I would like to see continuous wiping sequence.How do I achieve this? by programming a option byte or modify my firmware?Thanks 

Posted on April 17, 2018 at 16:47Hi,I got the STEVAL-ISA164V1 board from Digikey. I need to program STNRG388A controller with ST-Link v2 using SWIM interface.I have tried ST Visual Programmer with the whole list of STM8 controllers one by one, but ST-Link is unable to recognize the connected device.Please tell me, how can i upload firmware(.hex) file in STNRG388A. I need to upload default firmware in the boardAny help would be really appreciated.--RegardsSohaib#steval-isa164v1 #programmer #st-linkv2 #stnrg388a

Posted on April 01, 2018 at 19:02I downloaded the selector tool, but there is no indication of which micros support an external crystal. I am interested in knowing if any of the valueline parts support an external crystal. Ideally, the 8-pin device would support it for my application. Does anyone know which devices support an external crystal?ThanksRich

Posted on April 12, 2018 at 17:59 Hello, I'm using a custom board with STM8L151K4 MCU on batteries. Everything works awesome, power consumption is minimal, state is active-halt (MCU is woken via a button) with RTC on. RTC is used with LSE, but trouble is that for several days in real time, RTC moves fast forward (seems to be accelerated somehow) with several days. For example: I set up the clock on 2018, checking it on 2018, it's already 2.. In my algorithm, I often have to change clock frequency when MCU is awaken from LSI to HSI (need some computational power for a short time) and then back to LSI. I couldn't find any information of whether it affects the RTC clock source which should be LSE all the time. Here are parts of my code: void setSpeed(bool HighSpeed) { ReadyToSleep = FALSE; tmrSet(FALSE); if (HighSpeed) { if (CLK_GetSYSCLKSource() == CLK_SYSCLKSource_HSI) { tmrSet(TRUE); return; } //CLK_MainRegulatorCmd(ENABLE); //FLASH_Po

Posted on April 09, 2018 at 17:29As a detailed look into STSW-STM8069 / STM8S_StdPeriph_Lib v2.2.0 : http://www.st.com/content/st_com/en/products/embedded-software/mcus-embedded-software/stm8-embedded-software/stsw-stm8069.html, the Utilities/STM8S_EVAL/Common/stm8s_eval_i2c_ee.c file is quite confusing.I can see there is a SAFE procedure implemented.in line230* Read data from first byte until byte N-3 */if ((uint16_t)(*NumByteToRead)> 3) I believe it should be a 'while' instead of 'if'. 'if' case only got one byte read. and there is no outer 'while' to repeat this case.in line 295/* Reset the number of bytes to be read from the EEPROM */NumByteToRead =

Posted on April 06, 2018 at 16:43Hello,I use STVD as IDE and COSMIC as compiler. I have opened a project and compiled successfully. And I tried to debug it. But when I tried to debug I got an error:'  **Connection error (usb://usb): gbd already running a command.  'I have checked version of ST LINK and even i updated driver and nothing...Thanks for your answers#st #gdb

Posted on April 02, 2018 at 13:17Hello all,I'm trying to execute some part of my code from RAM as this part is executed in low power run mode, so Flash is turned off.All RAM function I used is working well except the delay fn.the code I use for delay fn is as follow:__ramfunc void vDelay_SW_M(uint32_t u32LoopTimes){ /* Decrement nCount value */ while(u32LoopTimes != (uint32_t)0)  {    u32LoopTimes--;  }}I get that warning: Warning[Ta005]: Library call (?dec32_l0_l0) from within a __ramfunc function I have found that any fn uses long type variables have the same problem when I try to execute it from RAM.How can I execute functions, which use Long type variables, from RAM without any problems ??Thanks in advance.#ram-usage #run-from-ram #code-in-ram #stm8

Posted on March 28, 2018 at 08:28I want to use 3 khz frequency signal has input to the micro controller.

Posted on March 29, 2018 at 03:47Sorry if I'm posting at the wrong forum but I'm having a hard time finding out what PD3 pin do in this product:https://my.st.com/content/my_st_com/en/products/evaluation-tools/solution-evaluation-tools/led-and-general-lighting-solution-eval-boards/steval-ild004v2.html I'm working on my own STM8 firmware, and are using PD4 and PD5 to control the current by turning them on and off in a tandem fashion. It didn't work because the PD3 wasn't used - and we thought previously that PD3 doesn't really matter, now it seems it very much does.A little help?

Posted on March 20, 2018 at 21:41Both pd5 and pd6 on 003k3 have same structure as on 003f3. So i feel its quite possible they can be used as adc's on 003k3. I didnt see any reference to that in datasheet neither on reference manual explicitly mentioning that.

Posted on December 15, 2016 at 07:27Hello. I am using a STM8  (STM8S208C8T6) and reading a code (not written by me) that employs a timer and its interrupt to call several routines.  Apparently the clock is set at 16MHz i.e. 0.0625uS. The settings of the timer are ARRH=0x03 and ARRL=0x20. therefore (0x0320=800) it resets at 800 (50uS) (ascending) PSCR is set as 0 so the timer has the same freq as the micro . The program also uses AD conversion (and its interruption)Anyway checking with an oscilloscope the timer interrupt is called at 56us , 54uS, 54uS, 52uS, 52uS, 52us, 38us(!!!), 42us(?), 50us, 50us....Curiosly when added, this gives 500uS so the timer called ten times does indeed gives 500uS as it should. The first 8 times at the timer interrupt an AD conversion is initiated. so I am guessing that an AD interrupt (when the AD conversion is complete) is

Posted on December 20, 2017 at 12:33STM8 2018 wishlist There is a https://community.st.com/community/stm32-community/stm32-forum/blog/2017/12/05/2018-stm32-wish-list but none for the STM8 yet, so I'm starting one here.Philipp#wishlist

Posted on March 19, 2018 at 00:25Hello guys.I've recently downloaded ST standard libraries for stm8s series and working with the functions.In cube mx version when we called an interrupt the callback function automatically was executed and after that, the flag was cleared in IRQ HANDLER function at the end of the interrupt.But in the standard library for stm8 I can't find any functions that have the flag clearing in the interrupts.Would you please explain me how can I manage this?