STM8 MCUs

There is now a Release Candidate 1 for the 4.3.0 release of the Small Device C Compiler (SDCC), a free ISO C compiler targeting the STM8 and other 8-bit architectures.In addition to the source package, binaries are available for x86 and amd64 Windows, amd64 macOS, and amd64 GNU/Linux.In addition to various bug fixes, notable features added since the 4.2.0 release are:* C2X bit-precise integer types and bit-fields thereof for (except for pic14, pic16).* Added all new general mnemonics from ASxxxx 5.40 except for .bank and enabled for all ports* sm83: sdasgb now can output cycles in listing and sz80 has accurate cycles for this processor except for branching* struct / union return (except for ds390, hc08, s08, mos6502, pic14, pic16).* div standard library function family.* struct / union parameters (except for hc08, s08, mos6502, pic14, pic16).* C2X nullptr.* Many fixes for the type system and _Generic.* Ad

"STM8S103F3" works "OK" and code is running while STV2 link (SWIM, RST, 3.3V, Ground) is connected with the application board and 3.3V supply is given to the application board from external power source.But when I tried it to run without "ST-V2 LINK" connection, "STM8S103F3" does not work. What I observed that it's "NRST" pins remains "LOW" through out the time in this condition. I also tried to pull this pin to 3.3V with 47k, 10k but it remains "LOW".

Can someone please help me to sort it out?Please I am stuck at a project.In the attached code I am unable to wake up the code  after sleep.Rest of the functions working once in sleep it shoild wakeup at if(MV>20)#include "stm8s.h" #include "stm8s_clk.h" #include "stm8s_adc1.h" #include "stm8s_gpio.h" #include "stm8s_tim2.h" #include "main.h" #include "flash.h" //#include "stm8s_awu.h" #include "stm8s_exti.h" volatile unsigned short _500ms_tick; volatile unsigned short idle_counter; volatile uint16_t MV; void Clk_Config(void); void ADC_Config(void); void GPIO_Config(void); void EXTI_Setup(void); void ADC_Read1(uint16_t *MV); void ADC_Read2(uint16_t *Vbat); void ADC_Read3(uint16_t *Ocd); void ADC_Read4(uint16_t *Temp); void EXTI_PortD_Callback(void); main() { uint16_t MV=0,Vbat=0,Ocd=0,Temp=0; unsigned short i; int counting = 0; Clk_Config(); ADC_Config(); GPIO_Config(); EXTI_Setup();

for my code the sleep and wake up is happening simultaneously I need  the wake up  only on if(MV>20) and sleep if(MV<100) for a minute(low power mode)Please someone help to sort it out #include "stm8s.h" #include "stm8s_clk.h" #include "stm8s_adc1.h" #include "stm8s_gpio.h" #include "stm8s_tim2.h" #include "main.h" #include "flash.h" #include "stm8s_iwdg.h" //#include "stm8s_awu.h" volatile unsigned short _500ms_tick; volatile unsigned short idle_counter; void Clk_Config(void); void ADC_Config(void); void GPIO_Config(void); void EXTI_Setup(void); void ADC_Read1(uint16_t *MV); void ADC_Read2(uint16_t *Vbat); void ADC_Read3(uint16_t *Ocd); void ADC_Read4(uint16_t *Temp) ; void AWU_Config(void); main() { uint16_t MV=0,Vbat=0,Ocd=0,Temp=0; unsigned short i; int counting = 0; Clk_Config(); ADC_Config(); GPIO_Config(); while(MV<100) { ADC_Read1(&MV); delay_ms(100);

How to use Port D as wake up function after the STMS003goes to sleep 

I got a message "Error : Programming failed" while trying to program "STM8S103F3" microcontroller with "ST visual Programmer". Sometimes the microcontroller got programmed but several times it failed. I am using "ST-LINK V2" programmer (connections: - SWIM, RST, Ground, 3.3V) for it. I have connected a "1uF ceramic capacitor" to microcontroller's "VCAP" pin. What i observed in it that when microcontroller got programmed, the "SWIM" pin goes LOW from 3.3V. But when i got "Error : Programming failed" message at that time, the voltage on "SWIM" pin remains standstill at 3.3V. So, please, anyone provide the solution for this problem. Thanks.

Please some one help me to how to get controller from sleep the configuration I made is not working.The below given code working fine and putting the controller in sleep but controller not waking up.The condition depends on mains (ADC Input channel 5)when it detects a value other than zero in mains voltage my controller should wake-up     while(MV<100) { ADC_Read1(&MV); delay_ms(100); Set_LED(0); idle_counter++; if (idle_counter>=300) { EnterSleepMode(); } } // rest of the code// void TIM2_Config(void) { TIM2_TimeBaseInit(TIM2_PRESCALER_32768, 244); TIM2_ClearFlag(TIM2_FLAG_UPDATE); TIM2_ITConfig(TIM2_IT_UPDATE, ENABLE); TIM2_Cmd(ENABLE); AWU_DeInit(); /* auto wake up at 32ms */ AWU_Init(AWU_TIMEBASE_32MS); /* enable auto wake up*/ AWU_Cmd(ENABLE); enableInterrupts(); } INTERRUPT_HANDLER(TIM2_UPD_OVF

Hi Everyone,I am using stm8s003k3 in one of my projects. I want to store a variable containing a  number from 0 to 999 in EEPROM but the issue is FLASH_ProgramByte & FLASH_ReadByte can only store a number up to 256. I tried to use FLASH_ProgramWord but I found don't know how to read a whole word as there is no alternative to FLASH_ReadByte for ProgramWord.I need to store 8 different variables so I cannot program each byte of 999 digits and then read all of them because in this way I need 24 variables and my code length increases.Can anyone suggest a better way how to read a whole word?

I have been developing a project around the STM8S105 and I've been able to read and write the program and data memory fine several times (so I know that my STLink and dev board work well). Today I set the read-out protection to do some testing and after that I have not been able to interact anymore with the chip. Nothing else has changed (software or hardware) and I cannot re-program the option byte (or perform any other action for that matter). All I get now is: "Error : Cannot communicate with the device !Check the SWIM cable connection and check all the needed pin connections on the SWIM connector."(I am using STVP for programming the chips).I have one more dev board with the same chip, but I won't try the same because if it gets bricked as well I will have no more to continue developing the project until I can obtain more chips.Any ideas as to what happened? Is there a way to re-program the option bytes so I can clea

#include "stm8s.h" #include "stm8s_clk.h" #include "stm8s_adc1.h" #include "stm8s_gpio.h" #include "stm8s_tim2.h" #include "main.h" #include "flash.h" #include "stm8s_awu.h" volatile unsigned short _500ms_tick; volatile unsigned short idle_counter; void Clk_Config(void); void ADC_Config(void); void GPIO_Config(void); void AWU_Config(void); void ADC_Read1(uint16_t *MV); void ADC_Read2(uint16_t *Vbat); void ADC_Read3(uint16_t *Ocd); void ADC_Read4(uint16_t *Temp) ; main() { uint16_t MV=0,Vbat=0,Ocd=0,Temp=0; unsigned short i; int counting = 0; Clk_Config(); ADC_Config(); GPIO_Config(); //AWU_Config(); while(MV<100) { ADC_Read1(&MV); //delay_ms(100); Set_LED(0); /*if (counting > 300){ EnterSleepMode(); } counting = counting +1; */ } while (1) { ADC_Read1(&MV); delay_ms(100); ADC_Read2(&Vbat); delay_ms(100); ADC_Read3(&Ocd); delay_ms(100); ADC_Read4(&am

The Motor control firmware only generates header files. Please help me with the source code of the same, or any files if available. Thank you!

I have a common function that I use to set up Timer 5 (I'm using it for PWM output, if it matters):timerCounts = CLK_GetClockFreq() / pow(2, TIM5_PRESALER_xx) / pwmFrequency;TIM5_TimeBaseInit(TIM5_PRESCALER_xx, timerCounts);And that works really well. I'm getting around +/- 0.4% error on that clock frequency. But if I try a similar approach in Timer 1, the end frequency is around 12-14% too low. If I command 1000 Hz, I get somewhere around 880Hz instead. Right now, I've got a fudge-factor of 50/57 which makes it accurate enough for a couple orders of magnitude, but I'm really curious why I need it, and if I can use information available to accurately calculate that fudge-factor so the code is more readable. For reference, here's what I'm doing for Timer 1:timerCounts = ((CLK_GetClockFreq() * 50 / 57) / timerPrescaler) / pwmFrequency;TIM1_TimeBaseInit(timerPrescaler, TIM1_COUNTERMODE_UP, timerCounts, 0);

HeyI have tried to use the option byte to stop the iwdg when i enter halt.I can see that i manage to set the WDG_HALTin option byte 3.But the watchdog still resets the MCU after i enter halt. Please help me, cant i do it? If so then how do i read that from the documentation.If i can what am i doing wrong? I can reproduce the problem with this code: void halt_test(void) { // switch to 16MHz (default is 2MHz) sfr_CLK.CKDIVR.byte = 0x00;   // Setup LED sfr_PORTB.DDR.DDR2 = 1; // input(=0) or output(=1) sfr_PORTB.CR1.C12 = 1; // input: 0=float, 1=pull-up; output: 0=open-drain, 1=push-pull   // Disable LED sfr_PORTB.ODR.ODR2 = 1;   for (uint32_t i = 0; i < 600000; i++) { NOP(); }   // unlock w/e access to EEPROM & option bytes sfr_FLASH.DUKR.byte = 0xAE; sfr_FLASH.DUKR.byte = 0x56;   // wait until access granted while (!(sfr_FLASH.IAPSR.

My program is as described in stm8s reference manual 17.4.3 External clock source mode 1and pulse counting is done in pin PC7 using HSI 16 Mhz , but the speed of counting is very low , for example for a 10 mhz pulse in 1 ms TIM1_CNTRL counts to 60 .I want to know is this speed of counting correct ?I want to make a frequency counter and need to have more speed to count high frequency wave . now it is possible to count up to 200 mhz pulse but resolution is very bad due to low speed of timer1 pulse counting .As I said for 10 mhz pulse , counter is 60 so each increment of counter is equal to 10Mhz/60 = 167 khz . my code for timer counter is as follows #include <iostm8S003f3.h>#include <intrinsics.h>unsigned long int fr=0,f=0;  // fr increment in timer1 overflow , f is number of final pulse counting unsigned char h; //dummy variable int main(voi

Hello Team I am using STVD IDE with cosmic compiler for development on STM8S207 series controller.I have two configurations in project called release and debug. whenever I try to debug code in debug configuration, following attached error appears when I run and stop code. i verified option byte settings quite few times and those looks Ok to me. Could someone help us out on this issue??

We wanted to design 1kW traction motor controller for 3 phase BLDC motor., Therefore we were referring to this document found here.We tried generating the library with e STM8 MC FW builder and it worked fine. But these were only header file and no source code. We expected that we would get bare minimum source code so that we can further develop. Please help us so that we can start developing the controller and any reference to document(s) for writing the firmware.

How can i solve this issue?

/* MAIN.C file *  * Copyright (c) 2002-2005 STMicroelectronics */#include "stm8s.h"#include "stm8s_clk.h"#include "stm8s_adc1.h"void Clk_Config(void);void ADC_Config(void);void ADC_Read(uint16_t *MV);main(){ unsigned short MV; Clk_Config(); ADC_Config(); while (1)  { ADC_Read(&MV); }}void Clk_Config() { 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_HSIDIV2); CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV4); CLK_ClockSwitchConfig(CLK_SWITCHMODE_AUTO, CLK_SOURCE_HSI,  DISABLE, CLK_CURRENTCLOCKSTATE_ENABLE);

how can i solve this issue?

If I commented these lines again error is notified in Clk.c file and repeated for other.My question is, if commenting all those lines will reflect any issues in building the code

Hi everybody,I'm using an STM8S003F3P6 on a custom board and a not original ST-Link V2 (which works fine), and I'm trying to set high the PB4 and PB5 pins. I don't know why, but it doesn't work as it should. I put my code down below.I also wrote another program which also sets high other two pins and it work perfectly fine. Seems that everything is working fine except those two pins. I've searched for my issue on this forum but I found no solution.The option bytes of the microcontroller are set as default. I also tried to write the code in Assembly but still doesn't work. I've also debugged my program using STVD. At the end of the program the Output Data Register is 0x30 which means that PB4 and PB5 should be high, but that's not true (the measured voltage is around 3mV above GND value). I tried on another STM8S003F3P6 on another board (which is the copy of the first one), but the problem still exists. Can someone help m

Hi, everyone. I have been working with STM8S, i am did not work with this microcontroller before, i have some questions about ADC (i am using STM8S103F3). 1) The first problem that i had was about the values read, i am initialize the peripheral for work with multiple channel using scan mode. So, the value is read one time, after i need deinitialize and initialize the adc peripheral in the while main for get a new value. I was reading the manual and i found about "Buffer overrun flag" , how can i resolve that problem? I am using stm standard library. 2) The second is about the channels that i need read. Below is my code, i get one channel value, but i dont get multiple values because all adc buffer has the same value. I need change the register during the program for change the channel? main() { SystemClockConfig(); TIM4_Setup(); GPIO_Setup(); UART1_Setup(); ADC1_Setup();

Hello everyone,I'm new on STM and I find myself having to use the STM8 in a linux environment and I saw that ST provides its IDE only for Windows.I would like to know where to find an IDE + software programmer (using ST-LINK V2) where to develop software for the STM8.I would like to have everything integrated in the IDE (flash programming).Is it possible that today there are no IDEs ready for programming the STM8?Does anyone know plugins for eclipse?Thank you all:folded_hands:

The "STM8S standard firmware library" is referenced in UM0834 for STM8S-Discovery. The library examples were well organized according to the descrription and included everything for the quick start. There were timers examples, ADC, SPI, I2C, UART examples, etc.etc., you name it. Where is all that stuff gone now? There are a few separate examples now without clear description like the one that was provided with the library in the chm help file.There is an older question/answer that mentions a now obsolete link to the library: ...stm8sfwlib_dot_zip (I'm not allowed to add links)Where do I get that file?Pease give me that file!The library archive contained a clear description of the examples in the chm format, stm8_tsl_um_dot_chmI need that archive back on the STM site! Please make no excuses for not providing it to the STM8S-Discovery users.

void Init_ADC(void) {    ADC1_DeInit(); ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_5, ADC1_PRESSEL_FCPU_D2,         ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL5,DISABLE);  }void ADC_Read(unsigned int MV) { ADC1_DeInit(); ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_5, ADC1_PRESSEL_FCPU_D2,    ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL5,DISABLE); ADC1_StartConversion(); MV=ADC1_GetConversionValue();        ADC1_Cmd(ENABLE);  while(ADC1_GetFlagStatus(ADC1_FLAG_EOC) == FALSE); ADC1_ClearFlag(ADC1_FLAG_EOC);  ADC1_Cmd(DISABLE); }