STM8 MCUs

I have experience with PIC and AVR microcontrollers, but they lack the good debug features of the STM8 series. Furthermore, these microcontrollers aren't cheap. While looking for simple and inexpensive chips, I keep coming across the STM8 series.Mastering a new microcontroller takes time. I'm confused about learning the STM8 because STMicroelectronics is recommending their STM32 series, which uses the ARM Cortex-M core. This recommendation makes me wonder if investing time in the STM8 is a good idea, or if it would be better to learn the more widely-supported and future-proof STM32 family. 

Dear ST Team,I am using STM8L052R8T6.I have already configured an external interrupt on PC0 (PORTC, pin 0).Now I want to configure an external interrupt on PF0 (PORTF, pin 0) as well.Since both pins have the same pin number but belong to different ports, I would like to know:Can PC0 and PF0 generate external interrupts independently?How should the EXTI configuration be done for multiple ports?Which EXTI registers and interrupt handlers should be used for PORTF?Could someone please provide guidance or a simple example for configuring external interrupts on PC0 and PF0 on STM8L devices?Thank you.

STM8L052XX – External interrupt on same pin number with different ports (PC0 & PF0)I am using STM8L052R8T6.I have already configured an external interrupt on PC0 (PORTC, pin 0).Now I want to configure an external interrupt on PF0 (PORTF, pin 0) as well.Since both pins have the same pin number but belong to different ports, I would like to know:Can PC0 and PF0 generate external interrupts independently?How should the EXTI configuration be done for multiple ports?Which EXTI registers and interrupt handlers should be used for PORTF?Could someone please provide guidance or a simple example for configuring external interrupts on PC0 and PF0 on STM8L devices?Thank you.

(MCU:STM8AF6223A-TSSOP20 MCU Label: STM8AF6223PDXLibrary: SPL V2.2.0Compiler SDCC:4.5.0 Debugger:stm8-gdb 8.1Custom MakefileMCU uses internal oscillator runnnig 16 MHz)Hi I'm Attila.When I enable the ADC1 Scan Mode and DataBuffer with ADC_Channel >= ADC1_CHANNEL_2 TIM1_CH2N waveform distorted.Oscilloscope CH1(Yellow) -> TIM1_CH1NOscilloscope CH1(Light Blue) -> TIM1_CH2NFor example when ADC_Init() with ADC1_CHANNEL_2when ADC_Init() with ADC1_CHANNEL_1

Dear ST team, STM8S103f3   I need to initialize interrupt but how I can define particular pin of the port for interrupt .Or how to initialize two interrupt in one port.please share example or library   RM0016thanks and regardsGuddu  

Hi. I'm working with the STM8TL52F4 MCU and its touch/proximity sensing peripheral. I made a simple touchkey use Halt or Activate-Halt for my project. Does anyone know of any sample code exploiting the ProxSense feature of STM8TL5x MCUs? Thank you.

Hello,I am trying to start a new project on a STM8s003K3 discovery kit, i have downloaded and installed STVD without a problem but I can't download Cosmic C Compiler. The download link in the Cosmic site is not working, I have tried anything I can think of (changing DNS settings, resetting IP, checking host file) to fix timeout error thinking the problem was on my end but I can't download it on another pc connected to another WiFi either so I think it is the download link which is broken. Any ideas what might be the issue? If this is unfixable there any other opensource compiler for stm8s?

Hi, I am trying to use timer1 as a delay timer , but I cannot  seam to get the timer working, what am I doing wrong? following is the code for testing timer1 with overflow Interrupt. #include "iostm8s003.h"#include <stdint.h>/* ===================== Own peripheral structs ===================== *//* ---------- CLK ---------- */typedef struct {volatile uint8_t ICKR; /* 0x50C0 */volatile uint8_t ECKR; /* 0x50C1 */uint8_t RESERVED1; /* 0x50C2 */volatile uint8_t CMSR; /* 0x50C3 */volatile uint8_t SWR; /* 0x50C4 */volatile uint8_t SWCR; /* 0x50C5 */volatile uint8_t CKDIVR; /* 0x50C6 */volatile uint8_t PCKENR1; /* 0x50C7 */volatile uint8_t CSSR; /* 0x50C8 */volatile uint8_t CCOR; /* 0x50C9 */volatile uint8_t PCKENR2; /* 0x50CA */volatile uint8_t HSITRIMR; /* 0x50CB */volatile uint8_t SWIMCCR; /* 0x50CC */} CLK_TypeDef;#define CLK ((CL

Hallo.I want to measure a pwm-signal (period 20ms, Puls 1,5ms +- 0,5ms)I made a assembler program to capture the positive and negative transitions of the signal according the RefManual RM0016, Rev14, page 170.I tried various versions but the negative transition is never captured, TIM1_CCR2 contains the period value or 0. TIM1CCR1 contains the period value as expected.where is my fault ?Please support.SincerelyChristianstm8/ ;************************************************************************ ; TITLE: fsm1.asm ; AUTHOR: SCh, 25 10 01 SCh ; Copyright 2015- , Dipl.-Ing.Christian Schmid, A-4973 St.Martin ; DESCRIPTION: Funkschaltmodul ; ; 0.10, 24 07 24 SCh, erster Test ? ; 0.13, 25 11 11 SCh, ; 0.14, 25 11 12 SCh, ;************************************************************************ ;Macros ;---------------------- #include "mapping.inc" #include "STM8S105x.asm" ;<- verw

Dear ST team, Please help to select controller for industrial automation. I have to design product for panel just to drive dc fan where the temperature high for cooling purpose.STM8 controller STM8S003F3P6, STM8S103F3T6, one of the controllers is suitable?Kindly provide contact details of your technical support team.

Hello,given that the longevity commitment of the STM8 chips has been renewed for another 10 years, is an update planned for the old STVD development environment, which is no longer in line with other similar IDEs and also has some bugs? Sebastiano

hello , i have an issue regarding stvp . before i used stvp on windows 7 and everything was working fine , but now i made an upgrade on windows 10 and it stops working. the error is ,,Cannot comunicate with the device .Check the swim cable .....'' If i try to program option bytes and verify them , it doesn t work , so in order to work i have to do it separately , and work only from second attempt. i have instaled the latest driver from st ,STSW-LINK009 and st_toolset pack 42 . what can i do to make it work like on windows 7? 

Hey,i didnot find any AFR4 in option byte to set PB4-SCL and PB5-SDA of STM8s003F3. Can st will help how to enable it for I2c hardware peripheral.?

HelloI have a few questions about the EEPROM organization & specific corner cases of using with respect to programming manual.1) What is the exact organization of EEPROM? It is clear that it can be written with 1 byte, 4 bytes (word) and 128 bytes (page/bank). As i deduced from programming manual:Q1: It says that for 1 byte it basically reads out a 32bit sequence, changes a byte and writes it back, is it correct?What if we are to change some 32 bit value which is not aligned within this 32-bit word sequences?I.e.: 00 00 0xf2 0xf3 | 0xf4 0xf5 00 00 say 0xf2f3f4f5 would be changed to 0x11111111.

HelloThe link provided on this solution is brokenST Visual Developer says ''out of memory'' and cra... - STMicroelectronics CommunityMy tool is crashing every time I open Tool->ProgrammerAlso tools are greyed in MCU selectionI'm testing on Nucleo board NUCLEO-8L152R8Drivers are installed and STVP can see the programmer. I have problem only on STVD.I saw many post of it, is there any conf file for the workaround?

If an symbol not defined, the compiler does not give any error, only the linker.Unfortunately it cannot say in which c source line is the undefined symbol, only the obj. file name.The only way is to select/copy and search for the text, which is many steps, and then may give a lot of results if the symbol name appears in comments too.Other compilers (Microchip, Visual Studio...) goes to the source error line on doubleclick.Any idea how to go fast to the source line?

I have the following issue: When the clock security system detects a clock fault on the HSE (running at 16 MHz), the controller sometimes resets with an illegal opcode as the reset cause, even though the deglitch filter is enabled.I couldn’t find any information about this in the reference manual or the errata sheet.The controller is an STM8L151G6U6. The external clock runs at 16 MHz, and the clock prescaler is set to 1 (CLK_CKDIVR = 0).

#include "stm8l15x.h" #include "stm8l15x_i2c.h" #include "stm8l15x_clk.h" #include "stm8l15x_conf.h" #define I2C_SPEED 100000 // 100kHz #define SLAVE_ADDR 0x27 void I2C_Config(void); void I2C_SendChar(uint8_t slave_addr, char ch); int main(void) { CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_1); I2C_Config(); while (1) { volatile long delay_loop; I2C_SendChar(SLAVE_ADDR, 'A'); // send character 'A' to slave for ( delay_loop= 0; delay_loop < 100000; delay_loop++); // delay } } void I2C_Config(void) { CLK_PeripheralClockConfig(CLK_Peripheral_I2C1, ENABLE); I2C_DeInit(I2C1); I2C_Init(I2C1, I2C_SPEED, 0x00, I2C_Mode_I2C, I2C_DutyCycle_2, I2C_Ack_Enable, I2C_AcknowledgedAddress_7bit); I2C_Cmd(I2C1, ENABLE); } void I2C_SendChar(uint8_t slave_addr, char ch) { // START condition I2C_GenerateSTART(I2C1, ENABLE); while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT)); // Send slave address + write I2C_Send7bitAddress(I

Hi ST team,  I was hoping to ask for your advice on the recently delivered product to our industry. The control mechanisms of the product are managed with the STM8S105C6T6TR. After the careful removal of the conformal coating, the STM information does not seem to conform to the specifications enclosed in the datasheet. Information from the datasheet:

Hi everybody,I am using the STM8S003F3P6 development board (little blue one bought from AliExpress) and I am trying to program it using ST-LINK V2 (also bought on AliExpress). I wrote the code using STVD and now I would like to program the MCU. I tried to follow the "standard" procedure to program the microcontoller but it doesn't work. The ST Visual Programmer displays the following error:Error: The device is protectedI searched for the solution in internet, and everybody says that I have to unlock the Read Out Protection. Those bits were already set to 0, but I cleared them anyway.This should have solved my problem, but unlikely the problem is still there. I read the datasheet and I didn't find any solution. I want to say that I tried programming another chip (same microcontroller model, same ST-LINK, same software tools) and everything works perfectly. Can someone help me please?Thanks,Lore

       STM8L experts, I need your help!        Our company’s legacy product uses the STM8L052R8 microcontroller. Currently, an important customer requires additional functionality that involves using a GPIO pin to detect the state of an external switch.        We developed test code in IAR and selected GPIOG_PIN2 as an input, configuring it in  floating input mode or pull-up input mode. The PG2 input pin is pulled up to VCC with a  4.7KΩ resistor and can be pulled down to GND through a switch, allowing us to apply either 3.3V (high) or 0V (low) to the pin. However, during testing, we observed the following issues: The input voltage at PG2 changes betw

Hi all, I am currently working on an IR remote control project using the STM8S microcontroller and developing with ST Visual Developer (STVD), using the STM8S Standard Peripheral Library (STSW-STM8069). While I have made some progress, I am facing a few challenges that I was hoping you could help me with.MCU: STM8S (exact model: STM8S003F3P6)IDE: ST Visual Developer (STVD)Library: STM8S Standard Peripheral Library (STSW-STM8069)Toolchain: Cosmic C compiler 

I was following the Application note document on [AN2659](https://www.st.com/resource/en/application_note/an2659-stm8-inapplication-programming-iap-using-a-customized-userbootloader-stmicroelectronics.pdf) as my purpose was to implement a custom bootloader on stm8 for firmware update. This application note mentions an example code that comes with this application note but i am not able to find that example code mentioned anywhere. I will be grateful if someone can help me find that out.

Hi I am writing this post to help the community. I have struggled a while before to get all this "Interrupt" receipe working with "ST Visual Develop"and COSMIC compiler. Development and tests with only one timer enabled at the time.Note this code is always looping in "delay_ms" function when not interrupted,make your own modification.See also C code file attachedGood luck ....SuperGDx 1- Timers configuration// Function to initialize TIM4 for 1ms interruptvoid TIM4_Config(void) {//Preload Buffered, Int generated UV OV and Couter enableTIM4->CR1   = 0x00; // Not enabled at startTIM4->CR2   = 0x00;TIM4->SMCR   = 0x00;TIM4->DER  = 0x00;TIM4->IER   = 0x01;TIM4-&g

MCU: STM8L151G3U6ISSUE: TIM4 interrupt doesnt seem working Connections:                 1. LED on pin PB0                 2. Push button/ switch on pin PC5Scenario:1. User press the push button2. Toggles the LEDObservation:Without using the TIM4 interrupt, the code works perfectly fine, when the TIM4 is used, the excutions reaches the first wait_50ms(); (red colour) and never go beyond this line, I would appreciate if any one would address the issue. BTW: I have used IRQHandler, 23  also but same result./===== Header files ====== #include "stm8l15x.h" // Software timing counters volatile uint16_t tick_1ms = 0; volatile uint8_t flag_50ms = 0; volatile uint8_t flag_