STM8 MCUs

Posted on July 07, 2018 at 17:37Hello everyone,Is it possible to get the values of the offset of variables in a frame, for use it in inline assembler? Or does is exist any other way to function arguments passing? As is possible in GNU GCC or COSMIC and other compilers.Thanks in advance.#sdcc #syntax #inline #stm8-toolchain

Posted on July 13, 2018 at 06:22Hi,I would like to develop and sell one of my product using STM8S IC with STSW-STM8069 library from STVD and STVP.is there any licence for that?  if yes ,what is process to get licence for one and how much i have to pay forThanksHiren#licence-for-stsw-stm8069-library

Posted on July 11, 2018 at 17:34Hello everyone,Why does the STM8CubeMX prohibit the clocking of the RTC with a frequency of less than 1 MHz, not allowing to use of an LSE? I want made a watch!Thanks in advance.#lsi #rtc #stm8cubemx #clock-configuration

Posted on July 06, 2018 at 10:05Hi,Where can ı find the standart library for stm8l001j3. The system offers to use the STSW-STM8016 standard peripheral library but this library does not include the stm8l001j3. I need help for this stuation. What are your offers? 

Posted on July 10, 2018 at 04:36 the STM8 abnormal braking performance,when the break signal effect,There are a pulse After the brake signal,why???#stm8-break

Posted on July 01, 2018 at 21:32Hi!I use a STM8S103F and I need to process external interrupts on PINs2,3 of PORT D by both fronts. That's my initialization code:GPIO_Init(GPIOD, GPIO_PIN_2 | GPIO_PIN_3, GPIO_MODE_IN_PU_IT); EXTI_SetExtIntSensitivity(EXTI_PORT_GPIOD, EXTI_SENSITIVITY_RISE_FALL);enableInterrupts();The problem is when I connect one of this pins to the ground the program goes to interrupt function and don't leave it while I don't release the pin. What I did wrong?

Posted on December 12, 2011 at 15:06Dear Sir Please help me to see port pins output on STVD Plotter. When i try, it opens OK and working OK. The Problem is when i try to add out pins to plotter it shows only -{I/O Pins}-RESETIRQ0, IRQ1...................IRQ29 etc.But i want PA1, PB1, PB2, PB3    (Port pins )  etc. My project is pending without it    Please HelpThanks and Regards  

Posted on July 05, 2018 at 15:07I am trying to flash only the program memory of an STM8S003F3 with the command line version of the STVP.Even if I specify the -no_progOption and the -no_progData options it still tries to verify the data memory:If I specify the -no_verify option then the program executes just fine:I think it is an incorrect behavior which should be fixed.#stvp #bug #command-line

Posted on July 04, 2018 at 20:38Hello, I have one question: Is it possible to deinit one pin instead of whole port? I have STM8S00F3 and ST Visual Develop.

Posted on July 04, 2018 at 19:09Debugging with open source free stm8 tools Hello everyone,After some efforts building and tune up of the free development tools I want show what it really works. Tools represented on: https://stm8-binutils-gdb.sourceforge.io/. I was build and assembly it by Linux Debian 4.9.0 and run using Eclipse Oxygen 3. Despite some surprises, it is possible to make quality debugging and verification of your programs. https://youtu.be/7TI8Aek7Klk A huge thanks to Philipp Krause for important tips.Thank you for your interest.#openocd #debugging #sdcc #eclipse #stm8

Posted on June 06, 2018 at 13:04Hi friends,We are using STM8L(STM8L051F3) and STM8S (STM8S003F3) for a project. I has been designed, developed and deployed. It works as expected - STM8L as a transmitter, wakes up from stand-by mode, collect some data, transmits it and goes back to stand-by mode and STM8S as a receiver, receives it and represents it visually. This set up has been deployed and working for over a year now.Now we redesigned the board with some extra functionality. We made the board and soldered the components but the new board continuously resets after 10-20 mins of operation. This is evident in both STM8L and STM8S. After a 'cool off time' of about 10-20 mins the board again works but back to the erratic behaviour after 10-20 mins.On further evaluation we saw: inconsistencies with the NRST pin. The voltage of NRST pin is not constant at 3.3V but changes abruptly. This brought us to a similar problem faced by

Posted on July 04, 2018 at 08:49Hi...!I am working on STM8S003F3 micro controller and unable to configure the alternate functions Timer 2 - channel 1[AFR0], Timer 1 - channel1[AFR0] and Timer 1 - channel 2[AFR0] for PC5/ SPI_SCK[TIM2_ CH1], PC6/ SPI_MOSI[TIM1_ CH1] and PC7/ SPI_MISO[TIM1_ CH2] respectively.I tried as mentioned below by referring datasheet (page no 42 and 45, attached)OPT->OPT2 = 0x01;can some one help me out on this?it will be really helpful and i can move forward.Thanks in advance

Posted on July 04, 2018 at 07:39I have been usingan STM8L051F3P6microcontroller in my sensor project. I have followed all the guidelines mentioned in the datasheet. After burning the firmware into the controller, it works for about a minute or less than that. But after that, the controller starts resetting indefinitely. Because of resetting, I'm not able to program it again. At times, inserting the ST link cures this problem as the NRST pin is pulled high and the resetting stops. But the programming issue pertains.  Adding more light, as per my design, the controller should sense some data, go to sleep, then wake up after a fixed interval of time. But it wakes up before the specified time setting. This keeps on repeating again and again. The waking up time is also random. I am able to witness this because of an led on the board that keeps on blinking in an erratic manner.The same design used to work before with old batch

Posted on July 03, 2018 at 08:13HiI use STM8S-Discovery Board with STM8S105C6 and ST Visual Develop v4.3.10, Windows 10.If I use command ADDW or SUBW this way:------------------------------------------------------------------------------Example 1                  ldw           X,&sharp400         ;Load 400 into X                  addw       X,&sharp100          ;Add direct 100 to word Xtest            cpw         X,&s

Posted on July 02, 2018 at 15:59Hello everyone i'm using system workbench for STM32 (sw4stm32) eclipse based IDE for my development. I'm trying to separate libraries and main file in two different projects but both are in same workspace. So I want first project with just libraries and second with just main.c, and i'm trying to include all the libraries and drivers from 1st project to the 2nd one by giving the path of the drivers but for some path it includes all the files but for some it doesn't. Can anyone suggest me why this is happening and what can be done to solve this?

Posted on January 05, 2018 at 10:14HiSTM8S001J3 There is a problem with UART communication.If PIN8 is used without remapping tx, it works well.If tx is remapped and used as PIN5, the following code will not work.void UART1_init(void){    CLK->CKDIVR = 0x00;     CLK->PCKENR1 |= 0x20;     // enable clock for USART     UART1->BRR2 = 0x0B;        // BaudRate 115200     UART1->BRR1 = 0x08;    UART1->CR2 = 0x2C;          // RIEN = ENABLE, TEN = ENABLE, REN = ENABLE}void main(void){    UART1_init();    enableInterrupts();     while(1);}INTERRUPT_HANDLER(U

Posted on June 30, 2018 at 13:52Hi everybody!I have a problem with the TIM2_CH1 output pin on STM8L051F3 (20-pin TSSOP).In the datasheet (Rev. 3), there are 2 options for the TIM2_CH1 signal: PB0 (pin 10) and PC5 (pin 1); but I cannot find anything in the manual (RM0031 Rev.14) on how to configure/remap the signal.I setup TIM2 in PWM mode on channel 1, so TIM2_CH1 should output my PWM signal, and it does this correctly, but only on PB0.Even in STM8CubeMX, PC5 can be configured as output of TIM2_CH1.Another thing is that in the datasheet we have 2 registers (RI_ICR1 & RI_ICR2) for the TIM1 peripheral, that is not present in the STM8L0513F - is this an error, and in the location of these 2 registers are the registers for remaping the TIM2_CH1/2 signals?Thank you!

Posted on June 28, 2018 at 07:13Hello, I would like to make 1 us period with timer 2 of STM8L051F3.currently I checked that 1 ms is correct, if trying to use under 1 ms (like 100 us or 10 us), the period is not correct....I measured the period with GPIO(LED).....please help to let me know whether can make 1 us period with timer 2 or not..and if has another solution, please help to provide the example with detailed information...thankful for your support in advance,thanks.#stm8l051f3

Posted on June 26, 2018 at 13:12Hi,I need your help to find out the root cause of my issue,please help to check the issue, thankful for your support in advance,thanks.issue,when trying to do bring-up new board, we can't control any port related with LED.Chip is STM8L051F3, used with STVP, IAR embedded workbench IDE - stm8I can download hex file, but the symptom seems to be that CPU is no responsive, at all.....please refer my code, I used STM8L15x_StdPeriph_Driver SDK, void main(void){ char ans; /*High speed internal clock prescaler: 1*/ CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_1); GPIO_Init(LED_R_GPIO_PORT, LED_R_GPIO_PINS, GPIO_Mode_Out_PP_Low_Slow); GPIO_Init(LED_B_GPIO_PORT, LED_B_GPIO_PINS, GPIO_Mode_Out_PP_Low_Slow);while (1) { /* Toggle LED_R LED_B */ GPIO_ToggleBits(LED_R_GPIO_PORT, LED_R_GPIO_PINS);//void GP

Posted on February 08, 2018 at 04:19Chip:STM8S001J3 The UART Of Alternate function after remapRX is in PIN1?TX is in PIN5The program has never been interrupted, RXNE has been 0.What is the reason why you want to ask? My configuration is as follows:OPTION  BYTES?                                AFR0?Alternate Active                                 AFR1?Alternate Active                                  AFR2?Alternate ActiveCode?            UART1_Init((uint32_t)9600, UART1_WORDLENGTH_8D,UART1_STOPBITS_1, UART1_PARITY_NO,          &nbs

Posted on June 28, 2018 at 10:44Hi everyone, I am trying to enable IWDG timer and working for me. but i am not able to change the iwdg timeout, it always ~8ms. I am using HSI CLOCK(16MHz) and referring the Example code provided by ST .I think the maximum iwdg timeout is 1 sec for STM8S003. Am I right??here is my source code. I am configuring 250ms IWDG timeout. but getting IWDG timeout is < 8ms. please help me to figure out the issue.LsiFreq=128000; //128khzvoid main(void){   /* Configures clocks */    clock_configuration();   IWDG_Config();   while(1)   {      /* Reload IWDG counter */       IWDG_ReloadCounter();    }}

Posted on June 28, 2018 at 09:12I need the reliability figures of STM8AF6223PD device. Is this available on the web site of ST?

Posted on June 27, 2018 at 18:18Hi,I have an STM8L151F3 MCU on my board.I'm trying to find info on the default USART pins for using the on-chip serial boot loader together with the flash loader demonstrator by ST.There are 3 options and couldn't find any clue in any ST document.Could someone help please.Regards

Posted on June 24, 2018 at 10:16I have code for the ADC1 that works on the STM8S103F103F3P6 but it does not appear to work on the STM8S105C6T6.Where am I going wrong?

Posted on June 21, 2018 at 12:17We are trying to migrate a .lib library which we use with STM32F1 microcontrollers to an STM8S microcontroller.We would like to use a similar toolchain for the STM8S:ToolChain for the STM32F1:Eclipse base IDE + Keil to code, compile and linkuVision to debug.ToolChain for the STM32F1:Eclipse base IDE + Cosmic to code compile and linkST Visual Develop to debug.To validate the viability of this toolchain I'm trying to debug a .lib library compiled with cosmic and a main.c which calls some functions from the lib in a STM8S Discovery Board. I've created the workspace wrapping an executable and I configured it so I can debug the main.c file step by step.1.- Is there a way import the files used to compile the .lib and debug them step by step? We do this with the STM32F1 toolchain and we will like to do the same with S