STM8 MCUs

Hi Guys, i am using STM8S003F3 controller and i want to that how can i achive 0.1v accuracy when my ADC resolution is 1023 and my total count is 2000.

Is there an option for a prebuild command or a pre-include in STVD?

We are using the STM8L052R8T6 CPU. The CPU is in Wait mode most of the time, so the current is about 15 microampere . In several cases, the current jump to about 34 milliampere (yes.. 34 mA!)We are using the STM8L052R8T6 CPU,  The CPU is in Wait mode most of the time, so the current is about 15 uA.In several units, after several weeks of operating, the current jump to about 34 milliampere (yes... 34 mA!).The CPU is operate with no any malfunction.Turn OFF and ON is not helping. Once the current rise to 34 mA, nothing is help, even reprogramming the device.Please let me know, what can be the reason for this?

Hi,I am using stm8s discovery board with stm8s105c6 microcontroller. I am using 6 step PWM generation sample code bu using stm8s_periperal_library.I am able to generate PWM at PC2, PC4 only but I am not getting PWM at other pins and not even complementary pwm is generating.I wann know Is my board is faulty or Do I need to set any thing else.i have used same example on another stm8s board and It was working fine, I was getting 6 pwm (including 3 complementary pwm)Thanks for Help in advance

Posted on December 06, 2017 at 19:37I have been using ST Visual Developer for 6 months without this issue. I was having problems with a project I am working on and thought that re-installing the tool might help. Once I un-installed the tool and installed the latest version the program will either crash after a few minutes, or crash immediately when launching the programming tool. It gives me the error message 'Out of Memory'Any resolutions to this issue?

I have a Arduino Mega and a STM8S003F3. I set up I2C communication between them. Arduino Mega is master. STM8S is slave. STM8S runs at 3.3V. Arduino Mega I2C clock frequency is the default(100KHz). TIM4 goes into interrupt every 1ms.If I don't enable TIM4 interrupt, i2C communication works correctly. If I enable the TIM4 interrupt, it works correctly for a short time (1-2 seconds) but it gets stuck inside the "DEFAULT" event inside the i2c interrupt and TIM4 stops.As a solution, I added the following code:ITC_SetSoftwarePriority(ITC_IRQ_TIM4_OVF, ITC_PRIORITYLEVEL_1); ITC_SetSoftwarePriority(ITC_IRQ_I2C, ITC_PRIORITYLEVEL_2);This time, it ran correctly for 6-7 minutes, then it got stuck at the "I2C_EVENT_SLAVE_BYTE_TRANSMITTING" event and TIM4 stopped. I set the Master I2C Clock frequency to 50KHz but nothing has changed. I need help. Thank you in advance.

Hi :) I have been designing a device for the STM8L151, and I hope to start production of the first 1000 units soon. But it seems the stock amounts are getting smaller and smaller?On DigiKey for example there are only 4 versions of the STM8L151 which have a stock of 1000+https://www.digikey.dk/products/en/integrated-circuits-ics/embedded-microcontrollers/685?k=stm8l151&k=&pkeyword=stm8l151&sv=0&sf=0&FV=-8%7C685&quantity=&ColumnSort=-1000009&page=1&stock=1&pageSize=500On LCSC there are only 2

Hi everyone, I'm using the STM8L152R8 Nucleo board and trying to get the RTC running on the LSE clock. It works but only inconsistenly, about 2/3 runs error out in the RTC_EnterInitMode function of the SPL the below line. RTC_EnterInitMode is called from RTC_Init which I call in my setup. if ((RTC->ISR1 & RTC_ISR1_INITF) == RESET) { status = ERROR; }My setup is while (CLK_GetFlagStatus(CLK_FLAG_LSERDY) == RESET); /* wait for 1 second for the LSE Stabilisation */   /* Select LSE as RTC clock source */ CLK_RTCClockConfig(CLK_RTCCLKSource_LSE, CLK_RTCCLKDiv_1); CLK_PeripheralClockConfig(CLK_Peripheral_RTC, ENABLE);   RTC_InitTypeDef RTC_InitStr; RTC_InitStr.RTC_HourFormat = RTC_HourFormat_24; RTC_InitStr.RTC_AsynchPrediv = 0x7F; RTC_InitStr.RTC_SynchPrediv = 0x00FF; RTC_Init(&RTC_InitStr);   //setup calender I can see from the registers that the LSE is setup correctly however the RTC is

Hi :) Quick version: how to write 2 bytes (not in the same word) to the EEPROM in STM8? Should I write 1 byte and then wait for the EOP flag to be set before writing the second one?Long version: for now I am simply doing:unlock EEPROMwrite byte 1 (EEPROM->data1 = xx;)write byte 2 (EEPROM->data2 = xx;) right afterFLASH interrupt is called when finished (byte 1 or 2? I don't know), there I lock the EEPROM againI imagine this is strange since with the RWW (read-while-write) fonctionality, the "write byte 2" instruction is executed while the first one is still running.Anyways funny enough this works perfectly fine, except that it gives me problems with a silicon bug listed in the STM8AL3xx6/8 STM8Lx5xx4/6 Errata sheet (https://www.st.com/resource/en/errata_sheet/cd00237242-stm8al31xx-stm8al3lxx-stm8l052c6-stm8l151xx46-and-stm8l152xx46-device-limitations-stmicroe

in my testing while I am down the power or power on of a any channel MCU is going to reset . I have attached a schematic of my board.If is there may issue of softwere code please suggest me the clock setup is void clock_setup(void){ CLK_DeInit(); CLK_HSECmd(DISABLE); CLK_LSICmd(DISABLE); CLK_HSICmd(ENABLE); while(CLK_GetFlagStatus(CLK_FLAG_HSIRDY) == FALSE); CLK_ClockSwitchCmd(ENABLE); CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV2); CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV4); CLK_ClockSwitchConfig(CLK_SWITCHMODE_AUTO, CLK_SOURCE_HSI,  DISABLE, CLK_CURRENTCLOCKSTATE_ENABLE); //CLK_PeripheralClockConfig(CLK_PERIPHERAL_SPI, DISABLE); //CLK_PeripheralClockConfig(CLK_PERIPHERAL_I2C, DISABLE); CLK_PeripheralClockConfig(CLK_PERIPHERAL_ADC, ENABLE); //CLK_PeripheralClockConfig(CLK_PERIPHERAL_AWU, DISABLE);

Hi everyone, I'm writing a program for a STM8L152R8 that sends data over UART to another mcu that should respond to me though I have a timeout on the transaction of five seconds using timer 4. I'd also like to include a watchdog however the max timeout we can get with IDWG is 1.7s. What would be the best approach here to ensure the watchdog doesnt reset the system while waiting for a UART response?It's a similar question to https://community.st.com/s/question/0D50X00009Xka0TSAR/watchdog-timer-problem however I feel the last question in this thread is very important and unanswered though.Thanks for the help.

Hi!There is an issue with unlocking the EEPROM on STM8 (probably all of them, but I am using STM8L151). This article summarizes the issue very well: https://slime.systems/content/stm8-eeprom-bug/There it says it was first found in 2013, and here we are 8 years later - on my board with an STM8L151K6 I found this super tricky bug that "sometimes" the EEPROM does not unlock for some reason.I went a bit through the same thinking as the author of the article above, thinking that maybe I got the key order wrong since it kinda worked one out two times (kinda). But changing the order was not working everytime... Anyways I love his solution - simple, and it works!I just wanted to mention it here hoping that one day someone from ST will have a look and at least mention it in the manuals or the errata.Si

Hello,I am trying to understand if TIM2 can still work for PWM output in low power modes. I can't find which peripherals are allowed to be on in the STM8L151F2 datasheet for the low power modes.To expand on my question. I assume that in Wait mode I cannot have a PWM since the clock is stopped but it is possible in the Low power run mode. TIM2 will be clocked by the LSI?I apologise but I couldn't find this information from the datasheet directly.Thank you,Chris

I am using STVD - IDE for STM8L and STM8A series. We want to do static code analysis for the code. Kindly suggest me tool which can be integrated with STVD or any other IDE -STM8 support static code analysis.

Hello allCan anybody help me to understand the CCRL register?I´m using a 20 kHz crystal, so in the register I2C->FREQR i will put the value of 20, is it right?And how about the CCRL register, what is the correct value for the standart mode?I fount the table 50 of RM0016 manual, but i dont understand very well..

I've encountered a strange progressive bug on ST Visual Develop where the IDE gets progressively wonky as I run the debug to program my STM8S001J boards. First the icons start to look shifted and weird, then windows start disappearing and reappearing, the debug time takes longer and longer to upload, and eventually it stops working altogether where I have to ctrl+alt+delete to exit. The bugs are permanent in the sense that rebooting the software does not reset the IDE bugs, however the bug seems to be isolated to the specific Workspace, meaning when I open a different Workspace, the bugs are not exhibited. The debug/programmer hardware being used is an ST-Link/V2Compiler is Cosmic.I've tried uninstalling and reinstalling the program, even deleting the program file/folder.I've searched this forum but I've not seen any similar issues being discussed. I'm kind of stumped.

To check halt mode i've set all gpio's to out mode, but some of them was on same line with SWIM. Now i can't promgram mk =) How can i solve this problem? Maybe there is any way to hard clean memory? STM8L050J3M3SOLVEDDatasheet page 23 (https://www.st.com/resource/en/datasheet/stm8l050j3.pdf)If the SWIM pin should be used with the I/O pin functionality, it is recommended to add a ~5 seconds delay in the firmware before changing the functionality on the pin with SWIM functions. This action allows the user to set the device into SWIM mode after the device power on and to be able to reprogram the device. If the pin with SWIM functionality is set to I/O mode immediately after the device reset, the device is unable to connect through the SWIM interface and it

Hi I've been working on a simple project with the STM8L152R8 but recently I've run into a problem I cant get around. When building with cosmic compiler I'm getting the follwing error:'#error clnk Debug\test_gpio_uart.lkf:1 segments .const (0x8080-0x8118) and .const (0x8000-0x808d) overlap'I can see in the linker that the vector table starts at 0x8000 and the main code segment starts at 0x8080 # Segment Code,Constants: +seg .const -b 0x8080 -m 0xff80 -n .const -it +seg .text -a .const -n .text   #<BEGIN VECTOR_FILE> +seg .const -b 0x8000 -k Debug\stm8_interrupt_vector.oIf I change the start address of the code from 0x8080 to 0x8090 it compiles okay but when I run the program nothing happens - I guess theres somewhere else I need to update the start address?Apart from that why would my interrupt segment have overran its segment. I've tried removing everything in the 'stm8l15x_it.c' file and changed the handle

please i need info regarding ST4SIM-110M

I tried conection my LCD with the available header but the mounted LCD and my LCD and showing half half character.ThanksAjeet

Hi,I want to program STM8S001J3M with SWIM interface, and the device doesn't have NRST pin, I see in the datasheet there is :Only the “connect on-the-fly�? method can be used to program the device through the SWIM interface. The “connect under-reset�? method cannot be used because the NRST pin is not available on this device.We have supported some device,  STM8S003,STM8S005, which have NRST pin.I would like to ask what the difference between the  “connect on-the-fly�? method and “connect under-reset�? method, is there document on how to program  “connect on-the-fly�? method?Thanks very much!Shirley

Hiii,i am using STM8s003f3 controller. i am trying to measure DC voltage but got some offset error on display and because of this error i am not getting 0000 value on display when there is no input is connected.how can get rid of this error in C,is there any way or calculation????????????Thanks

We are trying to program the boards using STVP . We are finding issue in data memory verifiy.Please find the attached screen shot

please anybody can help me i want to learn STM8Sxxxx i only know Gpio's and interrupt controlling please provide lecture or material sources

We are migrating MCU from STM8AF6246TASSSX to STM8AF6266TCX.Since we are observing issue in LINKER input setting . Though we are able to compile , we are missing part of code . We appreciate quick response.