STM8 MCUs

I want to use the single buffering mode of the ADC on a STM8S003.As the reference manual describes, in this mode then 8 or 10 consecutive conversions (depending on the model) are carried out on a single channel. The results are stored in ADC buffer registers DB0R..DB9R then the End Of Conversion flag (EOC) is set, which can generate an interrupt. So it's somehow an efficient way to convert 10 values without stalling the CPU or firing many interrupts.However, it seems that a conversion on a specific channel only fills the buffer registers with numbers greater than the chosen channel. For example, if we try to convert fro

Hi everyone,we are using a device called "Helmholz REX 100 WAN" which supports USB-over-IP over its VPN-tunnel. It needs an Eltima windows driver on the client computer.I'm trying to get the ST-LINK/V2-ISOL working so that I can programm an STM8 remotely, but on the client the ST-Link is not recognized. When I plug in the programmer into the client computer directly it is recognized and I can programm the MCU.Has anyone any hints to get this running or knows an alternative sollution (securely remote-programming a STM8)?Kind regardsDominik Gottstein

Hi team,we are plan to use STM8AF board. Whether it is support internal programmer or else we need to purchase separate programmer. please confirm it Thanks Manjunatha

I connect the stlinkv2 to stm8. then the reset button on board not work, Is there a way to reset the stm8 using stlinkv2?. thanks

I am a starter for stm8 mcus I installed STVD and COSMİC C Compiler. at first step -i can not save my project-i can not uncomment my mcu in stm8s.h header fileI get an error message "Access to C:Users\R&P\Desktop\first\inc\stms.h"Access to C:Users\R&P\Desktop\first is my folder created for workspace.SPL files are in folders named inc and scr . these two folders are inside the project folder. everything looks very simple but there is a problem. Can it be because of & in file path definition?Access to C:Users\R&P\Desktop\first\

char shiftdata=8;shiftdata=_asm("rlc a",shiftdata).I am trying to rotate left through carry value 8, expecting output of 16. When I debug the code, I am getting shiftdata value as zero, instead of 16.Can you help me with this?

I am using STVD and Cosmic Compiler and after add some #include files, the "Control + space" stop working. It doesn´t find the SPL (StdPeriph_Lib) function anymore. Hope anyone to solve this problem. Thanks

hi,I installed STVD and Cosmic C mopiler. I downloaded SPL from ST website.created first project.installed SPL soruce files and include files.I will uncomment line #define STM8S003 (line49) but compiler gives error."Please select first the target STM8S/A device used in your application (in stm8s.h file)"I exactly try to do this ( selecting the target)Dıd i missed any step previously ?why i receive this error.i follow attached document step by step.

I am trying to measure the frequency and duty cycle of a PWM input on TIM5 channel 1. My frequency is being measured correctly but the duty cycle is not. GPIO_Init(GPIOD, GPIO_PIN_4, GPIO_MODE_IN_FL_NO_IT); //PWM inputI am using the 16MHz HSI clock with no Prescaler.As detailed below, I am using channel 1 to capture the rising edge. I am using channel 2 to capture the falling edge from channel 1. Channel 2 triggers the interrupt. TIM5_DeInit();    TIM5_TimeBaseInit(3, 65000); //Prescalar = 8 (2^3)->2MHz...Count up to 65,000 before resetting counter.    TIM5_CCxCmd(TIM5_CHANNEL_1, ENABLE);  TIM5_CCxCmd(TIM5_CHANNEL_2, ENABLE); TIM5_PWMIConfig(TIM5_CHANNEL_1,  TIM5_ICPOLARITY_RISING, TIM5_ICSELECTION_DIRECTTI,  TIM5_ICPSC_DIV1,  1); TIM5_PWMIConfig(TIM5_CHANNEL_2,  TI

Hi,I am a student who has recently started working with STM8s MCU's. Currently I am working with an STM8s207K8 Nucleo 32 development board, I am using STVD along with a cosmic toolchain to program my dev board. I am able to program the microcontroller successfully using the standard peripheral library, however when I am trying to create a custom driver the compiler throws an error stating that it can not open the specific header file, this happens when I try to add the inc and src files to the the already existing SPL files, and when I create a new folder of custom drivers and create two sub folders for inc and src files the compiler throws around 15 errors, I am attaching screenshots of the error here and also pasting the header and source files of the custom UART driver that I am trying to create.

I am using STM8S003F3. Currently my application requires sampling two ADC channels, which are interfaced with:1) Output of a resistor divider network which is routed directly to the microcontroller's ADC CH 32) Analog output of a sensor module PCB connected to the microcontroller PCB module via connector to the ADC CH 4.Initially, I was using SINGLE CONVERSION MODE to scan the channels, by initializing the ADC with the next channel number each time, one after the other, after scanning a particular channel. In this scenario, when sensor PCB was disconnected, there was no floating voltage observed on the ADC CH 4, as a result the logic seemed to work fine.Later, I switched to SINGLE SCAN MODE, when I thought it was a much efficient way to scan multiple channels. I was able to get correct ADC values from the data buffer.However, in this case, when sensor PCB was disconnected, a floating voltage around 1V- 2V

I am using STM8S003F3. Currently my application requires sampling two ADC channels, which are interfaced with:1) Output of a resistor divider network which is routed directly to the microcontroller's ADC CH 32) Analog output of a sensor module PCB connected to the microcontroller PCB module via connector to the ADC CH 4.Initially, I was using SINGLE CONVERSION MODE to scan the channels, by initializing the ADC with the next channel number each time, one after the other, after scanning a particular channel. In this scenario, when sensor PCB was disconnected, there was no floating voltage observed on the ADC CH 4, as a result the logic seemed to work fine.Later, I switched to SINGLE SCAN MODE, when I thought it was a much efficient way to scan multiple channels. I was able to get correct ADC values from the data buffer.However, in this case, when sensor PCB was disconnected, a floating voltage around 1V- 2V

Hi ST team, We bought 4500pcs STM8S007C8T6, COO is Malaysia, but MSL on the label is MSL 2, is it correct? Because we found official datasheet for this P/N is MSL 3. Could you please help explain why one P/N with two MSL? Thank you.

Using a resistor voltage divider (100k+47k) to break a range of 11V - 14V down to an ADC input range below 5V. For 11V i expect 3.5V, for 14V I expect it to be 4.5V.(see schematic)STM8s903 - ADC_IN_2 on PC4 (physical pin 14)IAR embedded workbench 3.11.2 and STM8 SPL V2.3.0The ADC works as expected on the selected pin. It converts values in the range of 400 - 600 and even a 0 code if I short circuit the bottom resistor to GND.However, the voltage at the input pin and voltage divider is wrong. Meaning, the GPIO is probably not floating but driving this point. I have assembled to identical boards and both behave the same, tge first board has 2.5V the second has 2.9V.This voltage stays at this value even if I change the top voltage from 11 to 14V.Where it gets really strange is that this is not even always the case. For like 10% of the times, I actually observed voltages 3.5V up to 4.5V at the ADC input pin. Unfortuna

include "stm8s.h"             #ifdef USE_FULL_ASSERT   /** * @brief Reports the name of the source file and the source line number * where the assert_param error has occurred. * @param file: pointer to the source file name * @param line: assert_param error line source number * @retval None */ void assert_failed(uint8_t* file, uint32_t line) { /* User can add his own implementation to report the file name and line number, ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */   /* Infinite loop */ while (1) { } } #endif     int main(void) { }this is the actual code. I'm getting the error as shown.#error cpstm8 main.c:1(0+7) missing ;Need Help to solve this.Thanks in Advance

Hi, I'm trying to Implement an interrupt every 60 seconds, however something is missing. The TIM2 itself is working but can't seem to generate any interrupt. Any idea on what am i missing? The following is the code I am using. thanks //Required Headers   #include "STM8S.h"   #define test_LED GPIOB, GPIO_PIN_5       void clock_setup(void);   void TIM2_setup(void);       void main(void)   {   GPIO_Init (test_LED, GPIO_MODE_OUT_PP_LOW_SLOW);   clock_setup();   TIM2_setup();   while(1);       }       void clock_setup(void)   {   CLK_DeInit();     CLK_HSECmd(DISABLE);   CLK_LSICmd(DISABLE);   CLK_HSICmd(ENABLE);   while(CLK_GetFlagStatus(CLK_FLAG_HSIRDY) == FALSE);     CLK_ClockSwitchCmd(ENABLE);   CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV8);   CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV1

i am trying to switch a relay via the stm8s001 processor synchronously in the 0 pass. how could I realize that.i have an imput signal of 50 Hz. I can also start the timer, but I don't know how to switch the relay on exactly in the 0 cycle.(i watch the action on the oscilloscope).The Code.:main.c .: (only the most important areas)##################################################################void main(void){    CONFIG_UNUSED_PINS_STM8S001; //STARTUP_SWIM_DELAY_5S;  GPIO_Config(); CLK_Config(); TIMER_Config(); EXTI_SetExtIntSensitivity(EXTI_PORT_GPIOD, EXTI_SENSITIVITY_RISE_ONLY); enableInterrupts(); while(1) { if (flagfortimer == 1 ) {  GPIO_WriteReverse(GPIOA, GPIO_PIN_3); flagfortimer = 0; } } }

I'm trying to write a program to the microcontroller through the bootloader via the СAN interface.First I pass message ID 0x7f to activate bootloader. (ID=0x02, data=0x79)Then I transfer the file "E_W_ROUTINEs_128K_ver_2.0.s19" in binary form to address 0x000000A0 to enable write and erase commands. I transfer in blocks of 128 bytes. After transferring each block, I transmit the checksum and receive a positive response from the bootloader (ID=0x02, data=0x79)Then I send a command (ID 0x43) to erase all FLASH memory and EEPROM and specify 0xFF in the first byte. (I get 2 positive answers 0x79)Then I try to transfer the file of the new program to address 0x00008000 in the same way as the file "E_W_ROUTINEs_128K_ver_2.0", but after sending the first block of 128 bytes with a checksum, the bootloader does not respond.I cannot understand why the bootloader does not respond to an attempt to write to address

I need to generate two signals as shown below.I need to be able to adjust A and B independently. Is there some way to use TIMER1's OC1 and OC2? I can't figure out how to make an offset in the output compares - everything seems to start at the main counter expiring. I also looked into feeding TIMER2 into TIMER1 but I didn't see a solution there either. Any nudge in the correct direction would help me, thanks!Erik

When I switch HSI to LSE using IAR, there is always an error that "Failed to get execution status: SWIM error [30004]: Comm timeout"There is switch function:void HSI_TO_LSE(void){   if(CLK_SCSR!=0x08)    // if LSE is not selected as the system clock source  CLK_SWCR_SWEN=1;     // Enable clock switch   CLK_SWR=0x08;      // Switch HSI to LSE  while(CLK_SWCR_SWBSY);  // Wait until LSE ready  CLK_SWCR=0x00;}

I'm trying to generate a sinusoidal PWM on STM8, but it's for an equipmetn that the user will change the frequency of the output sine wave while the PWM is running. I was able to generate a sinusoidal pwm easily for a fixed frequency, using a table I calculated before starting the PWM.But I'm not having success in changing the output frequency, because for that I need to recalculate the table and this is a slow process. I also tried to calculate the value every PWM cycle, but since I'm using 15kHz for the carrier wave, the calculation is too slow.I've also thought about using two tables, so that one is used while the other is being recalculated, but this use more than the 1kB of microcontroller RAM.Has anyone ever faced something like this and could indicate some way to be followed to solve the problem?PS.: I'm using the STM8S003F3, and besides the PWM I need to read an ADC channel and communicate some bytes via UART, so

https://www.st.com/en/evaluation-tools/stdes-viennarect.htmlI have some questions about the PDF "stdes-vienna rect" that can be obtained from "Download data brief" in.1) Why is the CCO_clk on page 4 connected to DIGIN [1] and DIGIN [2]? Does it make sense to recapture the clock I generated?Is it a wiring mistake?2) "Vdc_ref" in Figure 1 on the 3rd page is not found as far as the wiring of the CPU on the 4th page is seen. How do you instruct the CPU?Is it a fixed value written in the CPU?3) The elements required for "Voltage Control" in Figure 1 on page 3 are "Vdc_ref", "ADC3 (V_bus_up)", and "ADC4 (Oout)", but the elements required for "Voltage Control" are Oout (ADC4). Isn't it V_bus_down (ADC2) instead of)?If V_bus_down is the correct answer instead of Oout, is it Figure 1 or the CPU wiring on

Here's the issue. I have built a LIN bus with a slave node and a master node using tow STM8AF/AL-Discovery boards. After flashing the boards with the demo of the STM8 LIN driver 5.1 as slave node and master node I can control either the LED or the bars in the LCD display with the user buttons. This works fine.I have a project and the master knode also has no config schedule table, so I have to do the configuration in the slave node.However, my idea is to pre-configure the slave node so that it does not need the "schTabConfig" schedule table in the LDF file. I have commented out the line in the "lin_basic_demo_master.c" -file and delete the "schTabConfig" in the LDF File.Schedule_tables{ // // this schedule table will configure the slave node to // participate in LIN communication // schTabConfig {    AssignNAD { slave1 }

Hi,I generate 2 mhz from the PORT / PIN C4 (CCO).The problem is that instead of a square signal, I get a triangle signal.What could be the reason????On PORT / PIN A3 i can generate a square signal, but not on C4I Use the STM8-SO8-DISCO Board in which the STM8S001JM3 is installed Here is the Code.:#include "stm8s.h"   #include "stm8s_gpio.h"   #include "stm8s_clk.h"     #define GPIO_PORT (GPIOA)   #define GPIO_PINS (GPIO_PIN_3)     #ifdef _COSMIC_   #define ASM _asm   #endif     #define STARTUP_SWIM_DELAY_5S \   { \   ASM(" PUSHW X \n" \   " PUSH A \n" \   " LDW X, #0xFFFF \n" \   "loop1: LD A, #50 \n" \   \   "loop2: DEC A \n" \   " JRNE loop2 \n" \   \   " DECW X \n" \   " JRNE loop1 \n" \   \   " POP A \n" \   " POPW X " ); \   }