STM8 MCUs

Posted on August 17, 2017 at 13:34Recent stm8flash improvements https://github.com/vdudouyt/stm8flash, the free command-line utility for the STM8 and ST-Link, ST-Link/v2 has seen quite some improvements lately. In particular:* All current STM8 devices (including the new STM8S001) are now supported.* The full flash range is now supported (instead of just the lower 32K).stm8flash was written by Valentin Dudouyt; many other people (including me) have contributed. stm8flash is part of the free toolchain for STM8 development. There are http://www.colecovision.eu/stm8/.stm8flash works on various OSes, including GNU/Linux, MacOS, FreeBSD and Windows.Philipp#stm8flash #free

Posted on August 16, 2017 at 23:18Hello together,I'm new here and be not a STM developer but rather Windows developer, so please be patient.But my question is very simply   How to programmatically read on Windows-PC the current firmware version (device 0x2200, but other would be also great) from device using hDevice via USB-transfer in bootloader mode without the whole upload (transfer from STM device to PC) in order to compare with version number in DFU file. What I need is bcdDeviceHi and bcdDeviceLo. Is here some special instructions or calls from STDFU.dll or STTubeDevice30.dll required?How to convert version string of x.yy.z to bcdDevice and vice versa?Many thanks for considering my question!Alex

Posted on August 14, 2017 at 12:58plz reply

Posted on August 11, 2017 at 07:38I am trying to communicate the stm8af52AA controller with L9950 slave ic but slave is not responding  properly.In datasheet they mentioned 24 clock cycle but my controller is generating  16 clock please help me

Posted on July 24, 2017 at 11:11I know it is a common question but still we cannot get rid of it. We are using stm8s003f3 in our project. An ac motor is switched ON and OFF by a 12V relay (using timer).The controller frequently resets itself when a relay is tripped ON or OFF. We used pf on the controller pin, pulled up the NRST pin with a 10K and a pf, used 7805 instead of lm1117, and tried a few other things, but couldn't succeed.It would be a great relief for us if anybody can provide solution for it.THANK YOU.   

Posted on August 08, 2017 at 14:25hi all, I have recently tried the official code according to the application note AN2822: STM8S and STM8A high speed internal oscillator calibration. Since I use STM8S003k3 MC, I modified the code from timer 3 to timer 1 channel 1. But I found that I could not enter the timer1 capture interrupt subroutine (the capture interrupt subroutine is never called), although I have checked the necessary registers' values using debug mode and all registers are correctly set.I have tried as mentioned in AN2822 the signal generater input with 50Hz frequency on the PC1 port (TIM1_CH1) but it seems that the rising edge of the input signal is never captured by STM8S003k3.I have also edited a simple example for the overflow interrupt and capture interrupt of timer1:The main function:&sharpinclude 'stm8s_lib.h'&sharpinclude 'stdlib.h'u16 cntr;

Posted on August 02, 2017 at 23:33I'm struggling to initialize the RTC on an STM8L051F3 microcontroller. I've used the exact code below on an STM8L151K6 microcontroller with no issues. The code hangs waiting for the LSI clock to be ready. Interrupts are disabled before calling the initialize function. Any ideas on what could be wrong? void RTC_Initialize(void){ // configures the RTC (Low Speed Internal RC is 38 kHz) CLK_RTCClockConfig(CLK_RTCCLKSource_LSI, CLK_RTCCLKDiv_1); // wait for LSI clock to be ready while(CLK_GetFlagStatus(CLK_FLAG_LSIRDY) == RESET);     <------CODE HANGS HERE CLK_PeripheralClockConfig(CLK_Peripheral_RTC, ENABLE); RTC_WakeUpClockConfig(RTC_WakeUpClock_RTCCLK_Div16); RTC_ITConfig(RTC_IT_WUT, ENABLE);

Posted on July 29, 2017 at 15:58Hi,I'm using stm8l151c8 controller, I'm trying to get an interrupt from PB0 but it's not working, here is my code:&sharpinclude 'stm8l15x_conf.h'&sharpinclude 'main.h'uint8_t __IO BlinkSpeed = 0;static __IO uint32_t TimingDelay;void Delay(__IO uint32_t nCount){ while(nCount--) { }}void TimingDelay_Decrement(void){ if (TimingDelay != 0x00) { TimingDelay--; }}uint8_t data_audio,data_transmit;uint8_t get_bit(uint8_t bits, uint8_t pos){ return (bits >> pos) & 0x01;}&sharppragma vector=0x008028@svlreg @interrupt void EXTI0_IRQHandler(){uint8_t i=0; if (EXTI_GetITStatus(EXTI_IT_Pin0) != RESET) {Delay(3); for(i=0;i<8;i++) { data_audio=data_audio<<0x01; data_audio=data

Posted on July 28, 2017 at 23:12hi, I want to test the SPI function on the STM8S value line discovery evaluation board. I only have this EVB and some cables, LEDs. Is it possible to make some simple test of the SPI function, such as communicating between this EVB and PC without extra hardware. I have found many examples, but all of them need some extra hardware, such as LCD, MAX72XX LED array, etc. Is it possible to only use this EVB and PC? Thanks a lot.Bo#spi #stm8s

Posted on July 28, 2017 at 15:09While I know how to add a single button to a pin (as a digital input) for the stm8s103f3p6. What I want to know is how to add multiple buttons using resistive analog inputs.Specifically I wish to know how to add 12 buttons as 4 buttons on three analog pins.Im stuck on the programming. I know thought that the circuit is a voltage dividermade up of high valued resistors on each of the three pins.Here is the Arduino version  for it for 1 pinhttp://tronixstuff.com/2012/02/29/tutorial-analog-input-for-multiple-buttons-part-two/ so it like above but on three pins not 1.I searched a while on the internet for the answer but cant find it. In your answer -make the code in C++ and give the precise circuit.

Posted on July 25, 2017 at 10:57Hello ,Sir/Madam I am working on STM8S (STM8S003F3) MCU . This is 20 bit MCU. I So i am using 2 timers TIMER1 CHANNEL2 (on pin no. PC7 ) and TIMER2 CHANNEL1 (on pin no. PD4) and i select ARF0 OPTION BYTE for TIMER1 CHANNEL2  then TIMER2 CHANNEL1 (on pin no. PD4) does not work , but both are separately  working . so now what is problem occur when we use both at a time . Thanks

Posted on July 23, 2017 at 17:20Hi all,i'm currently using STM8S003K3 and want to change the option byte for the beeper using STVP. But after I connected the discovery board to my PC, I can't change AFR7 because it is ''reserved''. Anyone know what I'm doing wrong? Thanks.Bo#option-bytes #beeper #stm8s003k3 #stvp

Posted on December 07, 2016 at 14:38Hello, excuse me persistence.In document said: 'If an interrupt is cleared or masked when the context saving has already started'. What is it meant?  And further. How to can prevent nested interruption from pending by software command? New interruption process may begin before first command in the handler.Thanks in advance.#limitation #interrupt #errata

Posted on October 07, 2009 at 05:45Stack size in Cosmic

Posted on December 21, 2016 at 09:10Dear ST!As a hobby STM8 user I am forced to use the STVD with Cosmic compiler because this is the only free development environment with debug capabilities.I would have the following suggestions to make the usage of tool less painful (because it is right now...).- Add a do not show this dialog again options for this dialog:I am using git which strips out the \r-s from the files, and it is pretty annoying to click on this dialog every time when a file is opened. Furthermore as the notification says only some compilers are require this (Cosmic does not).- Add option to start the debugger automatically. It is very annoying to press F5 e

Posted on July 15, 2017 at 07:28Hello everyone ,I am trying to program STM8S timer1 in One Pulse mode, after reading the data-sheet of STM8S003F3P6,I have understood that how to program timer1 in one pulse mode but I don't understand that after  programming in one pulse mode,after one trigger event , i.e after generating one pulse, do I have to re-initialize the timer for every pulse..?? Or just timer run signal is enough??Thanx

Posted on July 17, 2017 at 11:06I want to read the ADC sample value connected to Port B pin 0, when I check the sampling speed, I get it as 1.152 milli seconds per sample, can you let me know if my setting are correct. I am not using timer1 in my code.//Clock Configurationstatic void CLK_Config(void){ CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1); return;}//ADC configurationstatic void ADC_Config( void ){ ADC1_DeInit();ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_0, ADC1_PRESSEL_FCPU_D2, ADC1_EXTTRIG_TIM,DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL0, DISABLE );ADC1_ITConfig(ADC1_IT_EOCIE, ENABLE);ADC1_StartConversion();return;}//GPIO ConfigurationGPIO_Init(GPIOB, GPIO_PIN_0, GPIO_MODE_IN_FL_NO_IT);GPIO_Init(GPIOB, GPIO_PIN_1, GPIO_MODE_OUT_PP_LOW_FAST);//ADC ISR 22void ADC1_Sample_IRQHandler(void)

Posted on July 11, 2017 at 13:37i am testing a board of stm8s103f3. 

Posted on July 10, 2017 at 21:48Hi all,I am using STM8S003K3 mcu to develop a project based on some interrupt applications (TIMER overflow, UART receive). When I try to enable general interrupts by using 'enableInterrupts()'  function mcu gets stuck and all functions halt down. I enable peripheral interrupt registers but the general interrupts are not working properly. Is there anybody who has ever encountered the same problem and any solution?Thanks in advance for your support.Kind regards,Ozgur BOSTAN#stm8s-interrupt #stm8s003k3

Posted on July 11, 2017 at 10:52Hi All,I am using STM8S208MBT6B MCU and the STM8S Touch Sense Library. The Touch Sense Library use TIM3 for VIH/VIL measurement and TIM4 as a generic timebase for the state machine. When I try to use TIM1 to generate a 1ms interrupt, I notice that interrupt is not correct. It always delay a period of time. When I remove the Touch Sense code, the interrupt is accurate again. So, could anyone help and come accros the same problem? Should I still go for STM8S Touch Sense Library in some Touch Sense Projects?Thank you very much!Best Regards,Gary Ho

Posted on June 25, 2016 at 05:22Hi all. please help me. I program my code in IAR embeded, I built no error, no warning, but it not working. this is my code in main.c :#include ''main.h''void main(void){  CLK_HSICmd(ENABLE);  CLK_SYSCLKConfig(CLK_PRESCALER_HSIDIV1);  GPIO_Config();  TIM1_Config();    while (1)  {//TIM1_SetCompare1(349);  }  }void TIM1_Config(){  TIM1_DeInit();  /* cau hinh timer 1 co dau ra PWM la 10kHz  - bo chia tan 2  - duty =30%   Ftimer=16/2=8Mhz   TimerPeriod= Ftimer/Fpwm  -1=799     */  TIM1_TimeBaseInit(1, TIM1_COUNTERMODE_UP, 799, 0);  TIM1_SelectOCxM(TIM1_CHANNEL_1,TIM

Posted on June 28, 2017 at 07:09I'm trying to interface a lcd with the stm8. My code is as follows:(I'm using the 16 MHz internal clock)# include 'stm8l.h'# include 'stm8s.h'void lcdinit(void){     LCD_CR1 = 0x06;     LCD_CR2 = 0xEE;     LCD_FRQ = 0X30;     LCD_PM0 = 0x92;     LCD_PM1 = 0x00;     LCD_PM2 = 0xB0;     LCD_PM3 = 0x04;     LCD_RAM0 = 0xFF;     LCD_RAM1 = 0xFF;     LCD_RAM2 = 0xFF;     LCD_RAM3 = 0xFF;     LCD_RAM4 = 0xFF;     LCD_RAM5 = 0xFF;       LCD_RAM6 = 0xFF;     LCD_RAM7 = 0xFF;     LCD_RAM8 = 0xFF;     LCD_RAM9 = 0xFF;&n

Posted on September 04, 2012 at 14:41I have been developing some applications for the STM8S103F3 which I have on breadboard and I have recently transferred one of the projects to the STM8S Discovery board and I am finding a difference in behaviour which I cannot work out.The program uses PWM Mode 2 to output a 60 uS square wave on timer 1 channel3.  On the STM8S103F3 on breadboard the program works fine and I get a 0 to 3.3V square wave.On the Discovery board I have the square wave with the right frequency but the output voltage is only 280 mV peak-to-peak.  The only things I have connected to the Discovery board are the USB connection and the scope connected to the timer output and ground.I am using IAR as the development environment and I have modified the include files and project options accordingly.Any ideas where I could be going wrong? Am I correct in assuming that if the

Posted on June 13, 2017 at 20:42I need a simple utility to program an STM8L151G6U6TR using the USB ST-LINK V2 so that non-technical users in the field can upgrade the firmware in a consumer product. The MCU will always be STM8L151G6U6TR. So there should be no need to select an MCU. All I want the user to do is too load the s19 file and press PROGRAM. If the unit is programmed and verified correctly it would be indicated as such. That is it. No detailed information should be displayed, no code detail or any other info.

Posted on June 29, 2017 at 10:13hi....to program ST7FL39, i used software ST VISUAL PROGRAMMER....when i used Rlink to read STM8S103K3 with SWIM connection i can read and write what i want.......when i used ICC connection to read  ST7FL39 on same plate-from, software display this message 'PROBLEM WHILE DOWNLOADING MONITOR'  i don't understand what does this mean?..... about ICC connection on 10th pin female connector 1,3,5,10 are GND.....2 ICCDATA...4 ICC CLK....6 RESET....&7pin is used VCC-TARGET.....my target device completely  run with 12V DC...i have to give that 12V supply on that pin?.......about 9th pin OSC, they recommend 12MHz Cristal to put....what does this mean...i have to put external 12MHz Cristal on ST7FL39 CPU's  8 leg? or i have to just connect pin for 12MHz, which is given on adapter? please help!!