STM8 MCUs

  Hello,  I'm looking to read and write on an stm8s105K6c6 of a hoover, and would like any information that would enable me to carry out these tasks (chip and st-link v2 wiring diagrams), as well as the most appropriate software... Thank you *This post has been translated from French to comply with the ST Community guidelines.

Let's assume I have a program that exposes a serial interface for commands and one such command is "load new program".  I upload the new program as hex strings and the old program writes this to flash and the resets.  Hopefully at this point the new program starts up.Now the peripheral library gives three examples but they write either to EEPROM or just tiny bits of data to flash and it appears that only the calls to FLASH_ProgramBlock() and FLASH_EraseBlock() run from RAM.Since I am rewriting up-to ALL the flash memory, do I need to wrap and entire method in RAM() so that the entire processing, from the UART receiving hex to the writing to flash gets run from RAM?  I assume I cannot risk any of the old program (or at least the update method) running from anything other than RAM because I might be overwriting the flash copy of the old program.Is that corre

Dear All,I started working on the STM8S Mcu's recently. Here I have some basic queries.1)By using this ST-Link V2 in circuit debugger and programmer. (ST-LINK/V2 - ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 - STMicroelectronics) Can we use it for both flashing and debugging to this STM8S103F3 Mcu?2)Can I use STVD application alone for both flashing and debugging to my Mcu? or3)STVP application is also required? (but STVP is flash programmer right)Please any one can guide me to get clear understandings of this queries.Thank you in advance!Best regards,Akhil Kumar.

Hi, I have a STM8S001J3. I want to put my uC in halt mode because I'm on battery. The problem is that halt mode consume around 1mA when the interrupts are enabled. I need interrupts to wake up from halt mode with my GPIO pin so I can't disable it.I tried without the interrupts and the current consumption is around 4uA.I can't imagine that interrupts consume so much and that this issue is mentionned nowhere in the documentations. I join here a copy of my main function: main() { GPIO_Init (LED, GPIO_MODE_OUT_PP_LOW_SLOW); GPIO_Init (BT, GPIO_MODE_IN_PU_IT); GPIO_Init (GPIOA, GPIO_PIN_3, GPIO_MODE_OUT_PP_LOW_SLOW); GPIO_Init (GPIOD, GPIO_PIN_6, GPIO_MODE_OUT_PP_LOW_SLOW); GPIO_WriteLow(GPIOA, GPIO_PIN_3); GPIO_WriteLow(GPIOD, GPIO_PIN_6); EXTI_SetExtIntSensitivity(EXTI_PORT_GPIOB, EXTI_SENSITIVITY_RISE_ONLY); enableInterrupts(); while (1) { if (bouto

 This is one of function in code to implement WS2812 LED protocol on STM8S003F3.And I am getting this error compilation.----------- Project ws2812_led - STM8 Cosmic - Configuration Debug -------------Compiling main.c...cxstm8 -i..\led_blink\inc +debug -pxp -no -l +mods0 -pp -i"C:\Program Files (x86)\COSMIC\FSE_Compilers\CXSTM8\Hstm8" -clDebug\ -coDebug\ main.c#error cpstm8 main.c:34(9+7) invalid typedef usage#error cpstm8 main.c:34(24) i undefinedmain.c:The command: "cxstm8 -i..\led_blink\inc +debug -pxp -no -l +mods0 -pp -i"C:\Program Files (x86)\COSMIC\FSE_Compilers\CXSTM8\Hstm8

Hello STM Community,I am working with the STM8S001J3 microcontroller and facing an issue with configuring the SWIM pin (PD1) as a GPIO for LED control. Here is the problem:When I configure the SWIM pin as a GPIO, the MCU gets locked, and I am unable to download any code into the microcontroller afterward.To mitigate this, I tried adding a delay before configuring the SWIM pin as GPIO, but the issue persists — the MCU still gets locked.Is there a proper way to configure the SWIM pin as GPIO and still retain the ability to program the MCU afterward?If before the I/O configure disable SWIM mode then I configure SWIM pin as I/O (GPIO) pin and after power reset swim mode enable or disable ?Thank you in advance.

Dear STM32 Community,I am working on the STM8S001J3 microcontroller and trying to configure Pin 7 as ADC channel AIN2. However, I am facing some challenges:ADC Count Not Generating:I have configured the pin for ADC operation, but it does not generate any counts. I suspect the issue might be related to ADC initialization or incorrect AFR2/NAFR2 settings. Could someone please guide me with the correct initialization function and the required AFR2 and NAFR2 configuration for ADC channel AIN2?Alignment Differences:I observe different values when selecting right alignment or left alignment in the ADC result. I would like to understand whether the values obtained in these two alignments are supposed to be identical or if there is a conversion factor I should consider.Any advice or corrections to my setup would be greatly appreciated.Thank you in advance for your help!

This is driving me crazy. First time with this processor. I have AFR2 and NAFR2 set properly for AIN2 operation. I can verify that in the watch window and the disassembly window looks like it is working as expected. If I change the channel to AIN7 I can read the 1.2V internal reference correctly. However, the only thing I read on pin 7 (PC4) is 850 to 900 counts. At 2.5V or 0V on that pin it reads the same. I guess I am not reading the pin correctly, maybe there is something different I have to do to get PC4 on that pin or elsewhere in the setup. Using Cosmic compiler. What is the proper way to get PC4 on pin 7? I assumed when AFR2 was set that did it, but maybe not. Any help is appreciated.

After many years without problems, now my STVD is acting weird.It shows different behaviors running as user and adminAs user:The Open Workspace file selector pup-up file type is set to show only .exe files (it should be .stw files)When I start debugging it compiles, hangs on Restoring context message on the small Loading... pop-up, after some seconds shows not responding on window title and crash. Note that the main windows title shows some GDI error messageAs admin:The Open Workspace pop-up is okWhen I start debugging an error message pops-up "Connection error (usb://usb): gdi-error [40201]: can't access configuration database"I've tried so far:Reinstalled STVD at another drive besides C:Move the workspace and project files to another drive (the same where STVD is installed)Reinstalled st-link driversChecked if STVP is working fine. It is.Tried a new us

How to use the STM8AF Discovery development software AN4101-LIN communication with STM8A-DISCOVER provided on the ST official website! What programming software should I download to open it! I am a beginner and used ST's SPC56 series before! Now I want to learn about the STM8AF chip! Can you answer my question! thank you!

Dear all,I'm now using stm8l15x to send 8 bits data with both UART1 & UART2. UART1 works fine & can communicate with my PC for both TX & RX via both polling & interrupt mode. But UART2 doesn't work. It doesn't output any waveform (always 1) with or without connecting to a PC. And the TC flag never set, where it set in UART1 after TX.I tried to use nop() loop to replace reading flag status. It still output nothing. nop() loop works fine for toggling GPIOI don't think it's a hardware problem as flag status should not be affected by hardware. Are there any other methods for me to debug?Attached please find some of my code void main(void) { // LED GPIO_Init(GPIOD, GPIO_Pin_5 | GPIO_Pin_4, GPIO_Mode_Out_PP_Low_Slow); // UART CLK_PeripheralClockConfig(CLK_Peripheral_USART1, ENABLE); CLK_PeripheralClockConfig(CLK_Peripheral_USART2, ENABLE); GPIO_ExternalPullUpConfig(GPIOC,

Posted on February 18, 2017 at 11:46Hello, i can't get my stm8s105c6t6 i2c to work. Hopefully anybody has an idea what i'm diong wrong. i'm pleased for any imput i can get. here some changed code which doesn't do anything but i just try to measure anything on PORT E.1 &E.2. Unfortunately  the two Pins remain high (i'm using the std library from stm8):void main(void){ //Set Clock CLK_Config();//Set Ports  GPIO_Config();I2C_DeInit(); I2C_Init(100000, 0xA0, I2C_DUTYCYCLE_2, I2C_ACK_CURR, I2C_ADDMODE_7BIT, 16); //I2C->SR3 &=0xFD; //clear busy I2C_Cmd(ENABLE);while (1) { I2C_GenerateSTART(ENABLE); // start I2C_Send7bitAddress(0xD0, I2C_DIRECTION_TX); // address 1101000 + 0 (WRITE) I2C_SendData(0x00); // set register pointer 00h I2C_SendData(0x00); // write 0x00 to 00h (oscillator enabled)

Please guide me in how to interface HC-05 with stm8s0003f board , and clear the input and output buffer . Documentation or examples will be helpful

In STM8Ldiscovery kit I have configured GPIOA Pin5 as output PP. I have connected GPIOA Pin5 to GPIOA Pin3 which if i configure as GPIO_Init(GPIOA, GPIO_Pin_3, GPIO_Mode_In_FL_No_IT); then the pulses which I am outputting at GPIOA Pin 5 are read at GPIOA Pin3. But if I configure GPIOA Pin3 as GPIO_Init(GPIOA, GPIO_Pin_3, GPIO_Mode_In_FL_IT); ( I want to use GPIO Interrupt EXTI3 ) then the Pulses which I am outputting at GPIOA5 are grounded. Any explaination

How can i read/write a STM8S series IC. Please help me.

I have a Windows 11 machine with the ST toolset (including STVP) installed on it.  I have an ST-LINK V3 connected and the drivers are installed correctly (the device is working correctly reported by Device Manager).  I'm using:board_name = ST-LINKport = USBtool_prog = SWIMdevice = STM8AF6266 I can use STVP to flash the main program and the memory but I get an error when I program the option bytes (I don't have the Win 11 machine in front of me at the moment so can't be specific on the error).  I have exactly the same set up on my Win 10 machine and have no issues so my guess is it's a Windows 11 thing. Does anyone have any experience of this issue?  Is there another tool I can use on Win 11 to programme an STM8?Any help gratefully receivedDaniel 

Does the stm8s003f3p6  have a unique id? There is no mention of it in the data sheet. Thanks,Gene

Hello,I am somewhat new to the STM environment, but I started because I have a project where I need to implement CAN, and I happened to come across an STM8 discovery kit. This comes with an ST-Link integrated with an STM32, but I have tried to program it in several ways and I always get the message: 'ST-Link is not in DFU mode. Please Restart.' However, from what I’ve found, this is usually triggered by a button or a pin configuration set to High to enter DFU mode. Could anyone help me with this issue or provide some information on how I can update the firmware?

Hello, I'm successfully using BSET and BRES assembler instructions where the position is constant. However, I'm having trouble getting it to work where the position is determined at runtime.For example: bset 0x500f, 2 ; works ldw x, (0x03, sp) bset 0x500f, x ; doesn't work I've looked at several sites, but all seem to have constant positions.One workaround would be to have a full list of BSET instructions, one for each position, and jump to the appropriate instruction based on a decision. This wouldn't be bad necessarily, but hoping for a better way. References:assembler instructions datasheet in PM0044, section 7 (specifically 7.4):

Hello,does anybody know if the automatic service of Cosmic is working to get STM8 compiler license?Regards,Alessio

Posted on April 03, 2018 at 11:08We have project in which FreeRTOS code is generated using CubeMx.   I see syntax is little different from documentation on FreeRTOS site. How can I terminate and restart a particular task?Main objective is  Terminate and restart a task causing HardFaultRestart a crashed taskWant to know how to restarting a task in FreeRTOS code generated from CubeMx Majerle.Tilen.001‌Can you please help in this regard ?#task #restart #freertos+hal #terminate #tasks

Greetings, I'm attempting to use the RRCW (Rotate Word Right Logical through Carry) instruction (op code 56), but it is giving unexpected results on bit 15.The documentation on PM0044 (pg 138/162) says: "Bit 15 of the result is a copy of the CC.C bit value before the operation." Later in the same page it says for the CC.C bit: "C ⇒ b0 Set if, before the shift, the MSB of register or memory was set, cleared otherwise." I take this to mean this op code will take 0b0000000000000001, and result in 0b1000000000000000. However, what I get instead varies, but most often results in either 0b000000000000000 (entire word cleared) or 0b110000000000000 (two bits out of word set).The following assembler uses

Now we are developing a value product with STM8L151K4T6. In some case,it need to be supplied wtih battery,so we need STM8L work in low power consumption sometime. we need STM8L to do such jobs at the same time when it works in low power consumption :(1) times in hours by internal timer or rtc interrupt. when an hour reaches, STM8L can wake up to do some works.(2) waked up by external interrupt or an button event.I doubt whether STM8L can be waked up by both of the contions above. And thank you very much for providing some suggests about which low power mode we should use~

Posted on August 23, 2011 at 06:42 I'm developing some applications with STM8L152R8 and STM8L152M8 MCU now, and both applications are battery-used product. The problem is that, I cannot make the MCU consume micro-ampere order current.  I used every methods described in the reference guide manual, including low power run mode, active halt mode, and halt mode but our current indicator displayed mA order current consumption, from 1mA to 5mA. Of course I have stoped HSI, LSI, all timers and disabled all interrupts. GPIOs are also retested as push-pull low-slow output mode. I was confused, thus I decided to take out the STM8L discovery board and verify with that evaluation board.  First, I just delivered power into the discovery board with USB cable. Through toggling the power mode, the LCD of discovery board have shown fine current consumption. About 1mA in run mode, and about 7uA in low-power mode, and b

I am new to ST digital products and am working on getting the STM8L Discovery running for coding and debugging before a new serious project begins. My question is how to identify and connect the needed resources for this MPU, etc. Like, how to talk to the Discovery board, compile code, debug it, program and reprogram it. I have the Discovery board and legacy USB cable to-from Windows PC. I have lots of PDF data files and ST Cube MX, Cosmic CXSTM8 Special Edition, ST Visual Develop, ST Visual Programmer. How do all of these tools work together for editing source, compile, program and debug, reprogram? Feedback is earnestly requested!