STM8 MCUs

I'm just starting to learn about MCUs and am reviewing the datasheet for the STM8S003F3. In the pin description table, I came across some symbols that I'm not quite sure about, such as bold X with underline (X), regular X (X), and dash (-). What do these symbols mean? 

Posted on May 12, 2018 at 15:28Hi everyone. I am working with STDV development tool. When I want to build the program, the message 'the executable can not be found' appear. How can I modify the settings to solve this problem??

Can I use "STM32 ST-Link Utility" or "STM32CubeProgrammer" to program STM8MCU flash?If using "STVP", can it automatically detect the STM8MCU type? or require to configure "STVP" for the MCU type to be programmed.

CLONE of stlink V2 not supported by cubeide and cube programmer. stlinkV3 MODs i have brought recently. But studiny datasheet and TN1235 i didnot found that it is capable to programe and debug STM8S series MCU. Is it true? did any body used stlinkV3-mods to programe and debug stm8s series MCU? stm32 series chip is overkilled for my projects, thats why i want to use stm8S003f3 or stm8A (automotive) series MCU to build weighing scale card.request help from experts.

Hi, this is from RM0008 , surely , dozens have corrected it themselves since 2007 , but may be it is time to fix the RM nowthanks for all !

We are trying to program addressable LEDs through STM8 microcontroller. For the initial development, we use the NUCLEO-8S208RB. The architecture is as below image. Eight "IN-PI33QBTPRPGPBPW-60" LEDs connected to a data line in daisy chain.We face some issues in turning ON the LEDs. The colors doesn't match the input code or few of the LEDs doesn't turn ON at all. We couldn't achieve the data transmission period of 1.20us with the controller. Is the controller not capable of achieving this? Or is that we need to fine tune our code to achieve the required data transmission time?

Hello,I am new for the this mcu(STM8S). I want to init and run the Can driver. But I can't find any documentation or examples on the subject. I don't see any guidance on installing the driver. How should I do this? Are there any examples? I could only see one example on the web, but it didn't work either. https://community.st.com/t5/stm8-mcus/how-to-configurate-be-can-module-on-stm8s208c6/td-p/353543 Thanks for supports

Hi,I like to control this cute STM8S103 uC with c-code without using any library. I created many succesfully projects but now I want to write a I2C driver.I configured the uC portpins PB4/PB5 being SCL/SDA as Psuedo Open Drain and as Ouput and the I2C peripheral clock by default is enabled at powerup and I connected a pullup resistor of 5K6 on both signals. When de I2C peripheral is enabled only the SDA signal goes high as the SCL signal stays low. I executed many experiments and one time both signals got high when enabeling the I2C peripheral. But now the SCL still keeps grounded. What can be wrong here?

I'm a bit rusty on 8Bit MCU's, more used to STM32 but have to get that STM8 project done.I have a problem get TIM4 running, it might be I don't see the wood for all that trees.It gets compiled using SDCC and the header file is slightly adopted for that.here my code #include "stm8l15x.h" #define F_CPU 16000000UL #define LED0_PIN 4 #define LED1_PIN 1 static inline void delay_ms(uint16_t ms) { uint32_t i; for (i = 0; i < ((F_CPU / 16000UL) * ms); i++) __asm__("nop"); } void timer_isr(void) __interrupt(25) { GPIOC->ODR ^= (1 << LED0_PIN); TIM4->SR1 &= ~(1 << TIM4_SR1_UIF); } int main(void) { __asm__("rim"); CLK->CKDIVR = 0x0; CLK->PCKENR1 = CLK_PCKENR1_TIM4; GPIOC->DDR |= (1 << (LED0_PIN)); // configure PB1 as output GPIOC->CR1 |= (1 << (LED0_PIN)); // push-pull mode GPIOB->DDR |= (1 << (LED1_PIN)); // configure PB1 as output

Hi,I have an STM8S103F3P6 based development board & I wanted to know if it would be possible to execute program code from an external flash memory?Regards,Aditya.   

Hello,I want to connect STM8S003 & ADXL345 (accelerometer) using SPI 3wire mode (lines ~CS, SCK & MOSI as single bidirectional data line).According to 'RM0016 Reference manual STM8S...', the register SPI_CR2 of STM8S has BDM (Bidirectional data mode enable) & BDOE bits (Input/Output enable in bidirectional mode).I expected to use these bits to control SPI 3 wire connection:SPI_CR2 =   <BDM=1 | BDOE=1 | SSI=1 | SSM=1 (Master)>   - to set STM8 MOSI as outputSPI_CR2 =   <BDM=1 | BDOE=0 | SSI=1 | SSM=1 (Master)>   - to set STM8 MOSI as inputTo exclude possible questions:1. ADXL345+ATmega8 was tested in 4wire & 3wire modes, all is OK.2. ADXL345+STM8S003 in 4wire mode works OK. For 3wire mode I've only disconnected line MISO in hardware.I also can control SPI_CR2 state, chnging it before SPI operations and write the processess using oscilloscope.Test:

I have copied the delay_ms function from the standard Discovery code, but I can't get it to work. It seems that it is running precise 10x too slow, so "delay_ms(100)" gives me a 1 sec delay.Can anyone explain what is wrong?/* MAIN.C file * * Copyright (c) 2002-2005 STMicroelectronics */ #include "stm8l15x.h"     /** DEFINES **/ #define GPIO_HIGH(a,b) a->ODR|=b #define GPIO_LOW(a,b) a->ODR&=~b #define GPIO_TOGGLE(a,b) a->ODR^=b   /** STM8L Discovery board **/ #define LED_BLUE_PORT GPIOC #define LED_BLUE_PIN GPIO_Pin_7   /** LOCAL PROTOTYPES **/ void delay_ms(u16);     /****************************** * MAIN */ main() { GPIO_Init(LED_BLUE_PORT, LED_BLUE_PIN, GPIO_Mode_Out_PP_High_Fast); GPIO_LOW(LED_BLUE_PORT, LED_BLUE_PIN);   while (1) { GPIO_HIGH(LED_BLUE_PORT, LED_BLUE_PIN); delay_ms(100); GPIO_LOW(LED_BLUE_PORT, LED_BLUE_PIN); delay_ms(100); } }     /******************************

Getting stuck installing STM8CubeMX on Ubuntu 23.10.Downloaded from here: https://www.st.com/en/development-tools/stm8cubemx.html From the manual found here: https://www.st.com/resource/en/user_manual/um2125-stm8-configuration-tool-stmicroelectronics.pdf : [to install]On Linux: a. Make sure you have access rights to the target installation directory. You can run the installation as root (or sudo) to install STM8CubeMX in shared directories. b. Double-click (or launch from the console window) on the SetupSTM8CubeMX-VERSION.linux file. Double clicking on the file has no effect. Running from terminal doesn

HI ST SupportWe are looking a microcontroller for our new Requirements, Please look below details and suggest. Project Name : Overhead ConsoleSOW : Design Complete electronics of OHC with Rear light control. There will be some Touch Switch to detect and turn ON/OFF/Dimming/sunroof Slide the LED light based on feedback. OHC will Communicate to BCM on LIN Channel. Block Diagram (Minium 16 Touch require)SWITCH 1 OHC LEFT LAMP (TOUCH ENABLE)SWITCH 1OHC RIGHT LAMP (TOUCH ENABLE)SWITCH 3-7 Sunroof Silding (TOUCH ENABLE)SWITCH 8-12 Sunroof shade Sliding (TOUCH ENABLE)SWITCH 13 Ambient Light Switch (TOUCH ENABLE)SWITCH 14 Door Control Switch (TOUCH ENABLE)SWITCH 15 I-CALL Switch(TOUCH ENABLE)SWITCH 16 B-Call Switch(TOUCH ENABLE) 

Hi,I have a STM8s003 which I have already programmed with the Arduino IDE but the commands “digitalWrite” and “digitalRead” were too slow for me. I also found an alternative that works with the Arduino but not with the STM8: CLR(PORTA, 2); SET(PORTA, 2); I got these commands from the site:https://electronics.stackexchange.com/questions/22585/arduino-faster-alternatives-to-digitalread-and-digitalwriteWhen compiling for the STM8, the error message is: “Undefined identifier ‘PORTA’ ”Do you have any idea how else the ports are addressed or something?

Hi All, I'm trying to implement the DALISlave Library from AN3298 found here: https://www.st.com/en/embedded-software/stsw-stm8025.htmlI'm using STVD (which is new to me) I have followed all the instructions, and been issued a license for the cosmic compiler, but i continually get this error:----------- Project stm8dalislave - STM8 Cosmic - Configuration Debug -------------Removing intermediate files ... Done!----------- Project stm8dalislave - STM8 Cosmic - Configuration Debug -------------Compiling ..\..\..\libraries\dalistack\src\eeprom.c...cxstm8 +mods0 +debug -pxp +compact -pp -l -dSTM8S105 -i..\..\inc -i..\..\..\Libraries\STM8S_StdPeriph_Driver\inc -i..\..\..\Libraries\DALIStack\inc -i"C:\Program Files (x86)\COSMIC\FSE_Compilers\CXSTM8\Hstm8" -clDebug\ -coDebug\ ..\..\..\libraries\dalistack\src\eeprom

Issue with STM8S103 Code Uploading on Identical PCB BoardsI have two identical PCB boards, both equipped with the STM8S103 microcontroller. One board functions perfectly, with code uploading and running as expected, while the other does not.ObservationsVoltage MeasurementsOn the non-working board:NRST pin: 1.6VSWIM pin: 3.2VOn the working board:NRST pin: 3.2VSWIM pin: Floating around 200mVMicrocontroller ReplacementSuspecting a defective STM8S103 on the non-working board, I desoldered it and placed it on a functioning development board (See the attachement).To my surprise, the board started working perfectly—code uploaded and executed without issues.I measured the voltage on the NRST and

 I am studying a project that requires a very small microcontroller. It will only drive analog and digital ports, but we need the I2C protocol and maybe even CAN. I was advised to use the STM8, but I am not comfortable with this choice. And I wanted to adopt something that was Cortex-M0.What would be better? The STM8 or an STM32F0 or even another Cortex-M+. What is the future of the STM8 family?Would it be advisable to mix architectures in a new project? 

Hello guys,I found the datasheet on ST web was released in 2011.https://www.st.com/resource/en/user_manual/um0817-stm8sdiscovery-stmicroelectronics.pdfIn this old document, it state the hardware requirements as below:- USB cable type A to B- Computer with Windows 2000, XP or Vista OSHowever, we are using Windows 10 or later now.Does anybody will share the related statement or document about the required OS version?Many thanks!Robert

I've been struggling to demonstrate timer capabilities, with some success but a lot of unexpected failures. I don't see any "application notes" (ANxxx) in the documentation and very little howtos in the reference manual. Is there a list of recipes for code setup for common timer usages (countup/down, repeating, using capture/compare for countup, etc)?

Hello,I need to debug and program an STM8S MCU. However, when I try to debug using IAR, I encounter the following error:"Failed to set configuration with MCU name STM8S208C6: SWIM error [30006]: Comm init error: chip does not answer."When I try to program using STVP, I see this error:"Error: Cannot communicate with the device! Check the SWIM cable connection and check all the needed pin connections on the SWIM connector."I am using an ST-Link V2 for the connection. I checked the VDD on the board, and it was 5.12V. The programming circuit is as follows:&nbs

Hi,I guess there is a bug in manual clock switching (file: stm8s_clk.c function:CLK_ClockSwitchConfig:( /* Wait until the target clock source is ready */ while((((CLK->SWCR & CLK_SWCR_SWIF) != 0 ) && (DownCounter != 0))) { DownCounter--; }Must be changed to: /* Wait until the target clock source is ready */ while((((CLK->SWCR & CLK_SWCR_SWIF) == 0) && (DownCounter != 0))) { DownCounter--; }As stated in reference manual, SWIF becomes 1 when target clock source is ready, so we must loop on it till it becomes 1 or timeouts

Building Discovery Debug and Release errorsSTM8L152C6 MPUHow to set full path when building to show details?I read somewhere that there is a selection for building a lengthy display. Where is this explained, please? Where is the COSMIC C compiler list option entered to get listing outputs? Any other flags or entries to get full listings shown and saved?Error building the Release:  ..\..\..\..\libraries\stm8l15x_stdperiph_driver\src\stm8l15x_adc.c:The command: "cxstm8 -i..\..\..\..\libraries\stm8l15x_stdperiph_driver\inc -i..\..\inc -i..\..\..\..\librairies\stm8l15x_stdperiph_driver\inc +mods0 -pp -i"C:\Program Files\COSMIC\CXSTM8_32K\Hstm8"  -clRelease\ -coRelease\ ..\..\..\..\libraries\stm8l15x_stdperiph_driver\src\stm8l15x_adc.c " has failed, the returned value is: 1exit code=1.discover.elf - 2 error(s), 0 warning(s) No errors for Debug

Hi, We are trying to solve some problems regarding our SPI bus (bus stability, due to multiple branches in noisy environments) and reduce costs by eliminating a SPI sensor and make our STM8 to read a NTC. We would like the system to answer as the old SPI sensor, so we want to connect its CS to the STM8. The STM8 already had its own CS, so now it has two CS pins and we need it to answer to both of them. Is there a way to make this work? Thanks in advance! EDIT:Attached you can find the schematic diagram of what I am trying to do. Basically we had a branched SPI bus (the master device can host up to 4 slave modules, each one has again a division of the SPI bus in two branches). We are eliminating the second branching, so there is only four branches with no extra division. The STM8 now has to read the NTC, extract the temperature and answer to the commands that were meant to be sent to the old temp sensor. We are trying to

This started last week and is making it take 30-60 seconds to load and save my workspace. Also, the top menu bar containing the items for File, Edit, View, Debug, Project ... is missing! I can do Alt+F and Alt+P but I'd like it restored.Right clicking a toolbar shows an endless list of choices. Sure enough if I open the workspace .WED file which is 700k it contains all these entries:[WorkState_v1_2.DockState]Bars=1192.....And 1192 childbar entries! If I delete this file after closing the workspace, these all return when I load and save again. Something is corrupted and I can't find anything in my files or registry to fix either issue. The other 3 workspace files appear to be fine.This is making it hard to continue my work. I've already switched to the STM8 from NXP S08 and I do not want to switch again because of the quality of the tools.