STM8 MCUs

I have configured the watchdog for the maximum duration possible, i.e, 1.7 sec. void watchdog_init(void){CLK_ICKCR |= CLK_ICKR_LSION;IWDG_KR = 0x55; IWDG_PR = 6; IWDG_RLR = 0xFF;IWDG_KR = 0xCC; }But it seems to be resetting in around 26 - 28 ms. I have also checked this timing with an oscilloscope by toggling a led. watchdog_init();do {LED5_TOGGLE();printf("Test!\n");delay(516);} while(1);  What do you think is the cause for this issue? How is it possible to fix this? 

Hi I am starting a project for ultra low power consumption with STM8L151K4T6 + RFM90W, but not getting lora library for RFM90W.Please help me with library and sample tx and rx code.It will be very helpful, please suggest.

HiI am working on a project where we are reading the battery level on the ADC1 of LIS3DH. This value I need to read using STM8L051F3P. I am using SDCC compiler. I am able to read the WHO_AM_I register. I am also able to set the accelerometer thresholds and detect the interrupt. This means that I2C communication between STM and LIS is working fine.I have followed the steps to configure ADC1 as given in datasheet:The user must set the BDU bit (bit 7) to 1 in CTRL_REG4 (23h) -- DONEThe ADC_EN bit (bit 7) to 1 in TEMP_CFG_REG (1Fh) -- DONE In low-power mode, the ADC resolution is 8-bit. -- OKNow what's happening is, whenever I read the OUT_ADC1_L (08h) -- always giving 0x00OUT_ADC1_H (09h) -- always giving 0x80What do these values mean? What could be wrong with my configuration? Am I missing setting up some register? Do I need to follo

Dear Sir, We are trying to install the STVP-STM8 and are facing error:1935 Microsoft C++ 2005 redistributable (x64).Unable to install STVP-STM8 in the system. Operating System details:Window 11 Pro, 64 Bit Can anyone help us to resolve this error?

Olá, estou usando o STM8S003 e preciso decodificar controles com o código de salto do protocolo. Alguém pode me ajudar? Obrigado!

I got an ECU from an manufacturer, I was very interested in extracting the firmware from the ECU .They have used STM8AF controller , Open-OCD doesn't have support for the controller. Please reply I you guys have any idea about debugging the controller using opensource software like Open-OCD !!!!!!! 

Hi,I am working with an STM8 Nucleo 32 board based on the STM8s207K8 microcontroller. I am trying to receive data from a NodeMCU dev board via UART. The NodeMCU board successfully receives data from the server, and transmits it, however when I try to receive data using the STM8 dev board, I am not successful in doing so. I am able to transmit and receive the data via COM Port to STM8s, I have made sure that the baud rates of both the microcontrollers are same as well. Can someone please help me with this.Thanks#include "stm8s.h" #include "string.h" #include "delay.h"   #define LED_PORT (GPIOC) //GPIO Port C defined as LED port #define LED_PIN (GPIO_PIN_5) //GPIO Pin 5 defined as LED pin   uint8_t i; //Integer i declared for ececution of for loop   char OUTPUT_DATA[16]; //Character array OUTPUT_DATA of size 15 is declared to transmit feedback via UART   void main(void) { GPIO_DeInit(LED_PORT); //GPIO Port C de-initia

Hello, I'm using STM8S208 to receive 16 bit data in SPI slave. The SPI_DR is 8 bits. The master FPGA is sending 16 bits data, otherwise don't have enough luts.Is there anyway to solve this?

We are building code for our STM8S208RB (using SDCC), and we have noticed some behaviour we can't explain.We first observed that our program suddenly stopped working after we included a new file that contained some functions, but none of those were actually called yet. So the project builds just fine with and without that file included in the build. However, it does not run. If we then comment out some functions, it suddenly starts working again. As mentioned, none of these functions are actually called, simply them being there seems to cause the crashes.One hint we found that may or may not be relevant is this:On the working binary (17635 bytes) we have this:```010CE3 49 __start__stack:```And on the non working binary (17692 bytes) we have this:```010D1C 49 __start__stack:```Our compile commands are like this:```/usr/bin/sdcc -I/workspaces/our-project/include -I/workspaces/our-project/libraries/STM8S_S

As the subject mentions, I have a project in ST Visual Develop and I added the SPL files to the same location as the project. Once I add the files to the project and try to uncomment my specific stm8 it simply doesnt let me. I try editing the other files like the stm8_adc1.h file and I cannot edit it either. This is only when I add them to the project. How can I fix this?Thank you in advance.

Can anyone please share ILI9488 SPI tft display 320X480 resolution interfacing with stm8s sample code.

Does anybody know if there is any piece of equipment that’s currently available that can be used for copying/programming this chip?

I have a new design that uses an STM8L151 and I was wondering if the STM8S/A Standard peripheral library can be used to design the code for it.I do realise that at least the stm8s.h should be modified, but can it be used at all?

Posted on January 09, 2017 at 10:00 So, info in reference manual is irrelevant? The read should be always done as: ; Read Seq_1 ld A, TIM1_REGH; ld XL, TIM1_REGL;�?�?�? ? Will the following sequences lead to incorrect results? ; Read Seq_2 ldw X, #TIM1_REGH; Store in X address of TIM1_REGH ld A,(X); Read TIM1_REGH push A; incw X; Set pointer to TIM1_REGL ld A,(X); Read TIM1_REGH�?�?�?�?�?�? ; Read Seq_3 ldw X, #TIM1_REGH; Store in X address of TIM1_REGH ld A,(X); Read TIM1_REGH push A; ldw X, #TIM1_REGL; Store in X address of TIM1_REGL ld A,(X); Read TIM1_REGL�?�?�?�?�?�?�?�? �? #stm8-timer

I am trying to program the STM8S001J3 microcontroller, on a custom board. I am using ST Visual Programmer tool for flashing the program but I’m running into the following error continuously.I have tried using both ST-Link/V2(A) and ST-Link/V2(A) ISOL but it gives the same error. Since Reset pin is not available in this controller, connections I made are as follows:ST-Link/V2(A)Target MCUVDDPin 4GNDPin 2

Hello community,I'm looking for materials to learn STM8S programming.I searched on the internet but I couldn't find anything. Can you recommend me any documents or links to learn, please?Thank you all!

I am using the ST discovery board, which has STM8S003K3. I have written a code that generates a PWM pulse when ADC senses that the input voltage is higher than a threshold value. I have tested this program with a Potentiometer and verified the waveform using an Oscilloscope. However, when I try to run the program integrating my custom PCB, it does not give any output at all. I have made the following connections: MCU VDD - 5V on PCB MCU GND - PCB GND MCU pin B0 - voltage follower OPAMP on PCBMCU pin D4 - MOSFET driver on PCB I have verified that the MCU is getting 5V. am I missing any connections? What could be the possible reason for this behaviour? Thanks for your help!

Posted on October 31, 2013 at 10:13   I am using STM8S 105C^Discovery with a Windows 8 Laptop. I tried to compile some example codes using Cosmic C Compiler with an Evaluation Key, but I got some errors.  Here is the message I got =========================================================   ----------- Project pwm - STM8 Cosmic - Configuration Debug -------------   Compiling fwlib\project\stm8s_it.c... cxstm8 +mods0 +debug -pxp -no -pp -l -dSTM8S105 -ifwlib\project -ifwlib\library\inc -i''C:\Program Files\COSMIC\CXSTM8_EVAL\Hstm8''  -clDebug\ -coDebug\ fwlib\project\stm8s_it.c fwlib\project\stm8s_it.c:   Compiling stm8_interrupt_vector.c... cxstm8 +mods0 +debug -pxp -no -pp -l -dSTM8S105

I would like to examine the internal structure of the LQFP32 of the STM8AL3166. Are there any photos that show the internal structure, such as X-rays?

Hello there! I am trying to get an stm8s003f3p6 to display text on an LCD1602 the LCD has the adapter board PCF8574 on it.I'm using STVD and cosmic C compiler. I used chatgpt to write the code and after quite a bit of tweaking i got it to compile and build and programmed to it the smt8xxx using STVP. It all seemed to go well.I've connect the SCL pin (B4) and SDA pin (B5) from STM8xxx and 5V and GND on STM8xxx to the corresponding pins on the PCF8574.The 1602 does light up but no text appears on

I am doing a Current, Voltage Measuring project using INA219 Current Sensor and using STM8S103F3P Mini Development Board. And monitoring the data in Serial Monitor. But I am not able to read/write Floating Values. For Eg: Multimeter is measuring 21.28 mA then I am only getting 21 when I use int or long int. And if I use float then random symbols like "????" occurs in serial monitor.What can I do to print floating values or how can I print values more precisely? 

I am new to STVD. I would like to make some assembly level programs. Is there any assembly example programs ? please help

Any body can post  the link to down load old versions of STVD

I am new to STM 8I have just started assembly level programs on ST visual Develop. Version id 4.3.12.I can not debug my test program.When ever  I start debugging and clicking run  command the IDE hangs. I use windows 7  . Please help

Hello,I am developing a firmware for a host device to flash STM8S via UART.My issue is when I send a write command, STM8 didn't response anything.- Host sends write command: 0x31 0xCE, STM8 responsed ACK 0x79 . Host replies 0xFF- Host sends 5 bytes address and checksum: 0x00 0x00 0x88 0x00 0x88, STM8 responsed ACK 0x79. Host replies 0xFF- Host sends 6 bytes (1 byte: number of data, 4 bytes data and 1 byte checksum): 0x03 0x00 0x00 0x00 0x00 0x03 STM8 didn't reply anything.I attached serial capture image.Please help me. it took me a long time to check it