STM8 MCUs

I found that the ST72681 8-bit MCU has HS function. Do you still support this MCU? Or is there a related follow-up product?Looking forward to your message​

I trying to debug STM8AL3LE88. There is no problem with STVP in reading and writing device memory and option bytes. But in STVD when i Start Debug it ends with error warning:Starting debug session... -> Emulator reset (usb://usb)... ** Connection error (usb://usb): gdi-error [40204]: unknown value for this option (I've succefuly program and debug STM8S208, S103, S105 etc.)Can anyone know whats wrong ?ThanksMichal Dudka

Hello Everyone,This problem is persisting. I am using the STM8L151 Standard Peripheral Library to send an array of bytes over USART1. Code executes, but i see nothing on the Pin (using Oscilloscope), nor can i see the Data Rigister changing (Using ST Visual Develop, and ST Link V2 Debugger).Can anyone see why it behaves so? -anyone made a similar ugly experience before?thanks in advanceHere is my code inside the main: case State_Comm_Tx: if (State_Entrance_Part_F==0) { State_Entrance_Part_F=ON; Init_USART_Tx(); //Prepare the Array to send //uint8_t Meas_Update[6]; Meas_Update[0]= Start_Of_Text; Meas_Update[1]= 7; // Message Length  Meas_Update[2]=0x01; // Meassage Identifier Meas_Update[3]= (u8) (Echo_FlyDist>>8); Meas_Update[4]= (u8) Echo_FlyDist; Meas_Update[5] = 0x04;

The only thing which I can offer is at the end of the install when continuing from the display release notes page it hangs. I tried leaving it a while but the only way to exit is to close the program via task manager.Any suggestions?Thanks.

IDE's:1. IAR - I succeed complying the project but when trying debugging it (with SWIM + ST-LINK2), I get the error message: "Failed to set configuration with MCU name STM8L051F3: SWIM error [30006]: Comm init error: chip does not answer."In the Targets list there is no STM8L050J3 MCU so I chose the most similar MCU.When I replace the STM8L051F3 MCU as the target with "STM8 - Unspecified" I'm getting the same error message when trying to debug except for the MCU name, (I get STM8S208MB instead of STM8L051F3 although I chose Unspecified MCU).What seems the be the problem/solution ?2. STVD (Toolset: STM8 Cosmic) - again, I succeed complying the project and failing debugging. I'm getting the error message: -> Emulator reset (usb://usb)... ** Connection error (usb://usb): swim error [30006]: comm init error: chip does not answer-> Failed to connect target.Starting debug session...-&gt

Hello, I am trying to use STM8S208RBT6 as an I2C slave. It seems to be configured correctly, yet it doesn't acknowledge its address, and it doesn't get an interrupt. The registers are as follows:PE_DDR = 0x20;PE_ODR = 0x20;PE_CR1 = 0x20;PE_CR2 = 0x20;I2C_CR1 = 0x01;I2C_CR2 = 0x04;I2C_FREQ = 0x10;I2C_OARL = 0x28;I2C_OARH = 0x40;I2C_ITR = 0x02;I2C_CCRL = 0x50;I2C_CCRH = 0x00;I2C_TRISER = 0x11;I2C_PECR = 0x00.What am I missing?Thank you,Eric.

HelloI wonder if there is some example code available on how to use the Data EEPROM in the 8pin STM8L001J3.I did successfully work with the internal Data EEPROM on the STM8L051, but no success on the SO8. The address I used is 0x9BFB (in contrast to 0x1000 on the STM8L051). There is no error when debugging the code in ST Visual Develop/Cosmic, but the content of the bytes I want to alter does not change.Best regardsThomas

I am modifying code for the NUCLEO-8S208RB used with X-NUCLEO-NFC05A1 NFC reader. The code was originally developed by ST. I need to modify it for my own application. So, I created my own global variables and gotten rid of unnecessary code. So far everything is working. But a bit in one of those variables is being set somewhere outside my code. The variable in question is a bit field, declared thus:typedef union //Defining new type as this union { //of either byte or 8 bits. This is struct //used for general status. { unsigned scanned:1; //Bit 0: NFC tag has been scanned. unsigned I2Cready:1; //Bit 1: I2C buffer is ready to be read by the Latch. unsigned dummy2:1; //Bit 2: unused, always 0. unsigned dummy3:1; //Bit 3: unused, always 0. unsigned dummy4:1; //Bit 4: unused, always 0. unsigned dummy5:1; //Bit 5: unused, always 0. unsigned dummy6:

Hi,I am using RTC in WakeUp mode to wake the MCU to save energy.The problem is that the RTC time base is not accurate as I am using LSI on the RTC.Is there any way to make RTC more accurate using LSI as a clock source?.CLK_PeripheralClockConfig(CLK_Peripheral_RTC, ENABLE);          CLK_RTCClockConfig(CLK_RTCCLKSource_LSI, CLK_RTCCLKDiv_1);        RTC_WakeUpCmd(DISABLE); if( RTC_GetFlagStatus(RTC_FLAG_WUTF) == SET ){     RTC_ClearITPendingBit(RTC_IT_WUT);}  // LSI               = 38kHz   (LSI)  // LSI/16              = 2375kHz (Preescaler 16)  // Timer_Resolution = 1/(2375kHz)

I am trying to get SMbus communication to work and it works fine most of the time but I have seen that after sometime it gets stuck at I2C event I2C_EVENT_MASTER_BYTE_TRANSMITTING. I have implemented a timeout function which retries event 255 times but I can still see that the return I get from the I2C retry event is an error. I also tried to do MCU reset and re init I2C if it still gets stuck after timeout but then the mcu is resetting all the time.Is my I2C_EventRetry function incorrect > Or is there any good way to handle this error?Below is my Init, Transmit and Event Retry function.void I2C_Init() { /* Initialize I2C peripheral */ I2C_Init(I2C1, I2C_SPEED, 0x00, I2C_Mode_SMBusHost, I2C_DutyCycle_2, I2C_Ack_Enable, I2C_AcknowledgedAddress_7bit); // 0x00 is a dummy value. Only used in slave mode I2C_Cmd(I2C1, ENABLE); // Enable peripheral }   static void I2C_EventRetry(I2C_Event_TypeDef I2C_Event)

I'm using the latest version of STVD in Windows 10 (up to date). I'm trying to connect to an ST-LINK V2, but as soon as I select Tools>Programmer, STVD crashes. I also have STVP installed and am able to program my device with it, but I would really like to be able to do it in Visual Develop as well. Any suggestions on why this is happening and how to fix it?

Hi,I am using the IAR to program the STM8L151F3. And in my project I need to create a "serialization" controlled by me.And I want to record a variable in the last flash memory. How to do this using IAR?

I'm using IAR with a ST-link and having problems getting this code to flash. What does this error mean and how do I fix it?

Hi there!I am new to STM8s Discovery, could someone suggests me how to print the values of variables in the program? it is more convenient if i can do this but I have no idea how to make it. Thank you very much ! Morris

Hi there! I am now using STM8s Discovery (MCU=STM8s105C6) to run an example named as TIM1_7PWM_Output. However, when I use a oscilloscope to check the 7 PWM ouputs, only Channel 2 and 4 are able to output PWM signals. The rest (Channel 1, 3 and all complimentary outputs) do not show any PWM. I am using StdPeriph libraries and I have changed master clock to 16MHz (via CLK_HSIPrescalerConfig() ). The PWM frequency is 3.9kHz (with prescalar 2^0 and 4096 steps counter) . Having tried the same PWM frequency in TIM2 and TIM3, the 5 outputs work very well at the same time that' y I have no idea on TIM1. I appreciate those help and Thank you so much!!!Morris

Hey guys.Im using stm8s003f3p6 and IAR compiler and ST SPL.When i use gpio_init to make pb4 and pb5 output i dont know why the output does not get high and low?Other pins on port c ,a and etc work well.

This is not a question, so it doesn't really belong here, but the community forum is still broken, so there is no other place to post this.I just redid my comparison of the 4 most important STM8 C compilers (previous comparisons were in 2016 and 2018). Again this is a comparison of the compilers only, not considering the IDEs:http://www.colecovision.eu/stm8/compilers.shtmlQuick summary of what happened since 2018: Raisonance didn't even release a new version. IAR did some small bugfixes only. Cosmic substantially improved code size, without much other change. SDCC substantially improved code size, code speed and made further progress in standard compliance.Quick summary of current situation: Raisonance is still best in code size, and still worst in every other way. IAR is still best in ISO C99 standard compliance

I used STVD for stm8s105c6 assembly coding. The program compiled and built, since it could not be programmed in STVD, I used STVP for programming, and selected file format of motorola srecord.While, the effect was not I expected. I started to debug, but I could not run it, since this prompt (attachment), how to fix it?

I'm using ST Visual Developer with Cosmic-C compiler.Writing code for STM8S903K3.Making a pointer to get the value from a SPR register, ADC_DRH:uint8_t *pv;pv = *0x005404;I keep getting the errors;#error cpstm8 main.c:85(8+8) invalid indirection operand#error cpstm8 main.c:86(1+7) misplaced local declarationDon't know what I'm doing wrong.

I read from "STM8CubeMX configuration tools", "STM8CubeMX does not support C code generation". So my question is, where to use the .ioc8 file?In STVD ? If it could not generate C code, so the .ioc8 file could be only used in STVD for assembly ?If I want to start a project in IAR workbench for STM8, how could I use the .ioc8 file ?

Hi, I am trying to use the SPI slave with NSS enabled but I am not able to receive any data on the receive interrupt.

hello, I want to know what functions there are in STM8s Standard peripheral library, like this one for STM32F2xx.sorry for my bad English.

I have two files fifo.h and fifo.c:#ifndef __FIFO_H__ #define __FIFO_H__   //#include <stdint.h>   typedef uint8_t FIFO_Data_t; typedef uint8_t FIFO_Index_t;   typedef struct { FIFO_Index_t SizeMask; volatile FIFO_Index_t Head; volatile FIFO_Index_t Tail; } FIFO;   #define FIFO_DECL(Name,Size) FIFO_Data_t Name[Size+sizeof(FIFO)] = { Size-1 } #define FIFO_BUF(X) ((FIFO_Data_t *)&X[1]) #define FIFO_INC(INDEX,MOD1) ((INDEX+1)&(MOD1))   void FIFO_Clear(FIFO *Queue); uint8_t FIFO_Write(FIFO *Queue, FIFO_Data_t data); uint8_t FIFO_WriteAvail(FIFO *Queue); uint8_t FIFO_Read(FIFO *Queue, FIFO_Data_t *data); uint8_t FIFO_ReadAvail(FIFO *Queue); uint8_t Getc(FIFO *Queue); uint8_t Getc_Timeout(FIFO *Queue, FIFO_Data_t *data, uint16_t Timeout);   #define TIME_INFINITE 0   #endif /* __FIFO_H__ */#include "fifo.h"   void FIFO_Clear(FIFO *Queue) { Queue->Head = Queue->Tail = 0; }   uint8_t

Is there any working PS/2 keyboard/mouse library available for STM8 microcontroller?Best Regards,tinkerBOY

I am using standard peripheral library for STLUX and using stm8 library for I2c interface. I have tried with all the examples in libraries which are using interrupt handlers. Also, i have tried the online examples for stm8 using poll methods. Nothing is working for me till now.I am using Pin 17, Pin 18 for I2C interface. I have uploaded the code in attachment.Need some help from ST community.