STM8 MCUs

Hello, I'm having some problems with UART1 in STM8S001J3. I'm using the simple code below (the compilation is ok), but when I try to programming the MCU in STVP, a error happen and the MCU doesn't work anymore, even though I try to programming with a funciotonal firmware (like only GPIO port set). Anyone have any idea how to fix this? Or if there is another way to use UART1 in this MCU.If I put this contidion in DISABLE, the programming process works normally, but UART doesn't work.CLK_PeripheralClockConfig(CLK_PERIPHERAL_UART1, ENABLE);#include "STM8S.h"void clock_setup(void);void GPIO_setup(void);void UART1_setup(void);void main(void){   unsigned char i = 0;      char ch = 0;   clock_setup();   GPIO_setup();   UART1_setup();   while(TRUE)

I try to disable the SWIM interface in a STM8AL3168 derivative, by setting the SWD bit of the global configuration register (CFG_GCR) = 1 in main().typedef struct CFG_struct{ __IO uint8_t GCR; /*!< Global Configuration register */}CFG_TypeDef;#define CFG                        ((CFG_TypeDef *) CFG_BASE)#define CFG_BASE                   (uint16_t)0x7F60CFG->GCR = 0x01;But this does not seem to work, because afterwards I can still read out the programm memory using the ST Visual Programmer.What am I doing or thinking wrong?

WIth the STVD software in Debug mode and connected to the STM8 MCU via the ST-LINK/V2, is there a STVD feature that displays register content? Thank you!

I'm using a TTC encoder connected to stm8s003f . TIM1 counts correctly until it reaches the value before the overflow value . After that it either jumps to 0 or it shows the overflow value. What is that due to?Thank you.

in STM8L151G3 the PA0, PB0 and PB4 is configured with pull-up under reset. I wonder if we can change it back to floating under reset?

Hello,I have a problem with internal reference in STM8L151K6. I run Vrefint channel measurement. I read VREFINT_Factory_CONV from @ 0x4910. Measurement values:Vref_measured: 1311VREF_Factory: 0x600 + 0x7B = 1659VDD_Factory: 3V -+ 10mVWhy Vdd = ( VREF_Factory/Vref_measured ) * VDD_Factory is 3796 mV ? My real Vdd on board is 3300mV !What did I do wrong ?

 My issue is I had to do a re-install of W10 and now Toolset43 fails on the last hurdle with "Cannot change C:\DumpStack.log.tmp to non read-only" Have tried giving permissions, running as Admin, deleting the file (assuming it would be re-created) but all to no avail. It installed flawlessly 12 months ago but simply refuses to complete now. The error message suggests I check the installation drive (C:\). Suggestions would be helpful.

hello siri use the st development programand have a problem with the assembly code "int 040200"if you write that , the st development does not accept that code, altough its in that way it mentioned in the manualplease can you help me, how to solve thatmany thanksmarc debruyne

hello siri use the ST visual development programand tryed to give in that assembler instruction " int $040200"but the assembler does not reconise that, altough its in that way its mentioned in the programming manualalso, can you inform me if "05" and "75" witch is the valuable instruction?many thanksmarc debruyne

Hi allI have recently changed my computer, and reinstall STVD for the development of STM8 applicaiton.using cosmic compiler. In my old computer, I used to set up breakpoint by just double clicking the very left column (where line number appears) at the statement of the source code viewer, and a red dot appears making the breakpoint set. with my new computer, that does not work, clicking the mouse at the left column does not have any effect to set breakpoint. The alternative way is the right click popup and select insert/remove breakpoint.Is there any one out there having the same problem, and any way in settings to enable this feature?RgdsCalvin

Found a few web pages describing how to get up and running developing for the STM8 on a linux platform. All refer to the SPL and have links which are out of date. I've tried searching for the STM8 SPL on the st.com site but only turn up [1]. If anybody could point me in the right direction I'd be very grateful[1] https://www.st.com/content/st_com/en/products/microcontrollers-microprocessors/stm8-8-bit-mcus/stm8s-series/stm8s-application-specific-line/stm8splnb1.html

I am testing the STM8S Standard Peripheral Library (SPL) using the STVD IDE, Cosmic compiler, and a Nucleo-8S208RB development board. The SPL example 'UART1_interrupt' initializes the UART1 TX and UART3 RX interrupts using the below UART_Config() function at the start of main(). It appears this is the only time the interrupts are enabled, and I am wondering how this can work during continuous, back & forth between UART1 and UART3. (I added a while loop to the example for continuous communication.)After a UART1->UART3 transmission the interrupt routines disable the interrupts UART1_IT_TXE and UART3_IT_RXNE_OR, which is the usual method. However, it appears the interrupts are never enabled again, and yet continuous UART communication works.However, for UART3->UART1 transmissions in the opposite direction the SPL example does exactly that: interrupts UART1_IT_RXNE_OR and UART3_IT_TXE are enabled for each new transmission. Why the discrepancy betweem UART1

I am testing the STM8 SPL with the STVD IDE and Cosmic compiler. The target is a NUCLEO-8S208RB board. During simulation of the SPL example 'UART_interrupt' the function Buffercmp() in the below screenshot behaved as follows.Observation: the statement in line 230, return FAILED;does not exit the function. Instead, it jumps to the next return statement in line 237, return PASSED;As a result the comparison passed, regardless of the comparison outcome. This behavior is not consistent, and it seems to be a simulator issue. Question: Is this a known issue? The returned TestStatus type is an enum variable, could that be an issue? Thank you! 

We need STM8 MCU types for use in medical instruments. Does ST have Medical grade STM8 MCU's? It must be recommended for new design with long life time.

Hello! I'm trying to configure TIM1 in encoder mode programming on bare metal. But problem comes up when I try to enable the HSI: the clock is enabled but it doesn't get ready. I use the #include "iostm8s003f3.h" library.void clock_config(void){clock_init();CLK_ICKR_bit.HSIEN = 0x01;while(!CLK_ICKR_bit.HSIRDY); // program gets stuck here...}But when I use StdPeriph, HSIRDY rises right after I run the debug mode. Library #include "stm8s.h" void clock_setup(void){    CLK_DeInit();    CLK_HSECmd(DISABLE);    CLK_LSICmd(DISABLE);    CLK_HSICmd(ENABLE);    while(CLK_GetFlagStatus(CLK_FLAG_HSIRDY) == 0);...}I tried to compare my code with the one that is used by STP lib and and everything looks similar.

Tried Many kinds of register loading & execution orders. Somewhat new to ST, learned uCs mid 90s on Motorola 908xx. Trying to use ADC8 & 9 on an S208MB as a test platform until S105Js become available. Thanks in advance, Kevin

Hi,hello, can someone tell me how to enable and disable external interrupts on the ST Visual Develop interface. I use the general library. Thanks.And no matter what I do, first the external interrupt routine switches as if it has a priority.

I am testing the STM8S Standard Peripheral Library (SPL) with a NUCLEO-8S208RB dev board. The SPL examples were written for the STM8/128-EVAL board, but can be tailored for the Nucleo. I am using the latest STVD and STVP dev tools.The SPL example 'UART1 Half-Duplex' is not working, either with UART1 in TX or RX mode. Only one Nucleo is used, with a single wire connection from UART1_TX to UART3_RX as shown in the below figure: UART1_TX (PA5) to UART3_RX (PD6), as suggested by the example. Are additional connections needed on the same board? Any other suggestions? Thank you.

I'm trying to download the standard library for the MCU stm8s003f on the ST site, but I get the message "not available for download". Is there an alternative way to get this library?

Hello stm community,I am working with the STM8S001J3 processor on the ST Visual Develop Toolchain.And I use the TIM1 and the TIM2.The Tim1 is enabled via the external port when the D port is active. It is used to work synchronously with the 50hz/230v side to switch on the system in the 0 pass. The Tim2 should simply give a pulse out of a port when it is turned on. But somehow they block each other. The configuration etc. I think that everything is correct.If the code is not enough, then I send more lines- Thx (:Here is the config in the main:void TIM2_setup(void){   TIM2_DeInit();   TIM2_TimeBaseInit(TIM2_PRESCALER_16, 5);   TIM2_ITConfig(TIM2_IT_UPDATE, ENABLE);} void TIM1_Testsetup(void){           TIM1_DeInit();   &nb

You have published an application note AN3281 to implement the I2C bus.Where can we download the example programs described in the note? Thank you for your answers

STM8A Discovery boards are NRND. Is the part discontinued/going obsolete?. According to ST, these parts are long term guarantee. 10 Year Product Longevity does not cover STM8A series.

https://github.com/PhilippeSimier/STM8S207/blob/main/06_master_i2c/src/main.c Avez vous de votre côté le même problème !!!

I have a certain noise in my 200mV source which I believe is generating a resset in the uc. How can I disable these functions? how do i read the uc's Reset vector? Thanks.

Once the STM8-SafeCLASSB SW package is integrated into our application the Periodic run time self tests are executed continuously but the STL_ClockFreqTest fails randomly. While running the entire application, that test normally fails after about an hour but some other times take 45min or even 4 hours.We are using the HSI as clock source.While running a debug session I can see that the measured LSI period is always above the threshold.We are using IAR for our project.In our application we also use Timers 3 and 5, SPI1 in slave mode with DMA, SPI2 in master mode, and EXTI.How to get full stability on this test? Is it possible that some of the mentioned peripherals could affect that test?Thanks in advance,Ricardo