STM8 MCUs

Posted on May 11, 2015 at 22:03 Hello everyone I am new to this forum, so hello. I am alsonew to STM en C. I am trying to learn everything step by step but get the stuck on the adc. I am trying to get the adc working on stm8s003f3 with the following code in STVD with Cosmic, and send the result to the pc using UART. Can anybode tell my what i am doing wrong? adc_value is 1010 from ADXL Same setup on arduino gives a reading somewhere around Any suggestion is welkom... Already thanks /* Includes ------------------------------------------------------------------*/ #include ''stm8s.h'' #include ''stdio.h'' #ifdef _RAISONANCE_ #define PUTCHAR_PROTOTYPE int putchar (char c) #define GETCHAR_PROTOTYPE int getchar (void) #elif defined (_COSMIC_) #define PUTCHAR_PROTOTYPE char putchar (char c) #define GETCHAR_PROTOTYPE char getchar (void) #else /* _IAR_ */ #define PUTCHAR_PROTOTYPE int putchar (int c) #define GETCHAR_PROTOTYPE int getchar (void)

Posted on November 14, 2017 at 11:41The original post was too long to process during our migration. Please click on the attachment to read the original post.

Posted on November 12, 2017 at 08:35esp-stlink: SWIM implementation on the ESP8266 I thought this may be of interest: This github project allows to SWIM access to STM8 MCUs using the ESP8266 microcontrollers, thus not requiring the proprietary stlink devices anymore: https://github.com/rumpeltux/esp-stlink#stlink #esp8266 #swim

Posted on September 25, 2017 at 17:03What is the minimum electrical circuit to program the STM8S microcontroller by SWIN?#minimun-circuit

Posted on September 16, 2014 at 11:21Hello everybody, when doing ADC1 single scan conversion (ADC0 to ADC2 channels) during the first run after reset the ADC2 is always 0 (ADC1 and 0 are OK). The next and following sets of readings are then all OK. It is tested on STM8S Discovery (STM8S105C6). Code: ''     ADC_Config();     ADC1_StartConversion();     while( ADC1_GetFlagStatus(ADC1_FLAG_EOC) != RESET)      ;     HS_buffer[0] = ADC1_GetBufferValue(2);     SU_buffer[0] = ADC1_GetBufferValue(1);     U_steu = ADC1_GetBufferValue(0);     ADC1_DeInit(); '' where ADC_config(): ''  ADC1_DeInit();/* De-Init ADC peripheral*/   /* Init ADC2 peripheral */  ADC1_ScanModeCmd(EN

Posted on November 09, 2017 at 15:33Hi,I am currently working with the STM8S003K3 and I am attempting to write a bootloader function which will take an S-Record line by line and write the contained data to Flash. I have seen that is common practice to store the bootloader function in the UBC to provide it protection, however, I am currently prototyping and don't require this level of protection just yet.I am instead storing the bootloader function in the standard program memory area, the location of which is determined by the Cosmic Compiler and Linker. I am utilising the linker command specified under the moveable code section and I can see that this is working correctly from the map file.There are two main issues which I am struggling with:1. The first issue is in attempting to use the _fctcpy() function provided in the machine library by Cosmic. Whenever I call the function to copy my bootloader to the RAM space

Posted on December 08, 2014 at 05:05After used a lot of time to read and find (and not found), now i have done the code after try it own.And now, i want to share to you.my project need to get analog input 5 channels from ch0 to ch4 with scan modethat's i don't include all of code, you may consider for some linecode:1.   GPIO_Init(GPIOB,GPIO_PIN_ALL,GPIO_MODE_IN_FL_NO_IT);     // set IO mode on port B2.   ADC1_DeInit();3.   ADC1_DataBufferCmd(ENABLE); // enable buffer4.   ADC1_ScanModeCmd(ENABLE); // enable scan mode5.   ADC1_ITConfig(ADC1_IT_EOCIE,DISABLE);   // disable interrupt when using scan mode// scan to channel that's need , this code is scan from ch0 to ch46.   ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS,ADC1_CHANNEL_4,ADC1_PRESSEL_FCPU_D18,\

Posted on November 09, 2017 at 11:13Hello,Actually I am interfacing ESP8266 wifi module with STM8S003F3P6 MCU . I have  programed the wifi module to get data from internet and send it to STM8S003F3P6. Data is character 1 or 0. Wifi module is working wel.But it seems that there is nothing happening from the STM8S003F3P6 Side. Kindly  if anyone can guide me,if I am doing anything wrong. Thanks.#include 'STM8S003F3P.h'void InitialiseSystemClock(void);void UART1_Initialize(void);    void UART1_Initialize(void){UART1_CR1=(0<<4);UART1_BRR1=0x08;UART1_BRR2=0X0a;UART1_CR2=(1<<5);UART1_CR2=(1<<2);}void main(void){                   InitialiseSystemClock();        &nbsp

Posted on July 25, 2016 at 12:39 Code speed results didn't look that good for SDCC at the time of the SDCC 3.6.0 release about a month ago (http://colecovision.eu/stm8/compilers.shtml). But SDCC has made huge progress since, and now achieves higher Dhrystone and Coremark scores than the other compilers. Here are the results for the current development version (SDCC 3.6.2 #9667): Philipp P.S.: It's really time to look for some paid work for myself now. This will slow SDCC stm8 progress a bit, since I am the main developer of the stm8 backend in SDCC. However, development will continue both by me and the other SDCC developers. Note

Posted on October 12, 2017 at 14:20Hello everybody,Recently, the company has been actively offering to transfer your projects from 8-bit micro-controllers to 32-bit ones. In view of this, I had concerns about the feasibility of future developments with the use of STM8. I like these efficient and inexpensive processors, and I would not want to lose this engineering resource in the near future. If anyone can, anything, say about this, then please participate.#stm8 #future

Posted on November 08, 2017 at 07:47Hello. Is it possible to enable ROP in application? Let's say I transmit a command to MCU through UART and then MCU enables ROP. I am using STM8AF6223.It is stated in PM0051 that 'readout protection is enabled by writing 0xAA in the ROP option byte'. But in STM8AF6213/23/23A/26 datasheet [8.1 Option byte description], OPT0 (ROP[7:0]) -> '0xAA: Enable readout protection (write access via SWIM protocol) Note: Refer to STM8S series and STM8AF series 8-bit microcontrollers reference manual (RM0016) section on Flash/EEPROM memory readout protection for details.'Maybe it is possible to enable it without using SWIM protocol?Thank you

Posted on October 20, 2017 at 09:25Hello! What USART pins of STM8L051F3P6 are dedicated for bootloader, PC5-PC6 or PA2-PA3? Can't find any info about that.The same question about stm8l151c6.Thanks!#bootloader #usart-pins #stm8l051f3

Posted on November 07, 2017 at 01:15Hello, I'm working on project with STM8L051F3 and detect strange behavior of PA0 when entering in active HALT mode.Sometimes after execution of HALT at the output of PA0 there is '1' although it is programmed in '0'.in the errata sheet I do not find a description of such a problem, and I do not find a logical explanation for such behavior.- disable SWD     # CFG->GCR |= CFG_GCR_SWD; ....- disable interrupts- configure PA0 as output LOW  # GPIOA->CR2 &= ~GPIO_Pin_0;   # GPIOA->ODR &= ~GPIO_Pin_0;....- enable interrupts- HALTAny idea about the reason of this issue?Thanks in advance!

Posted on June 29, 2017 at 14:02I am a Linux user (hobbyist), with ST-LINK/V2 connecting to various STM8S  devices. I can find details of the SWIM and DM interfaces on the device side (ST document UM0470), but cannot locate any details of the host side. I am not a C programmer, but I have looked at the code for STM8FLASH (on GitHib) and it shows that I need to know more about the host side interface of ST-LINK/V2. Any assistance greatly appreciated.Background: The STM8s are running custom code. I want to use debug module to stall cpu so can inject data and change program counter before restarting cpu; lots of times. I'll probably hack something together using Python, just to see if my idea actually works at all. But I cannot find details of host side commands to ST-LINK/V2 on st.com. I figure what I want is probably there, but I am looking for the wrong thing!!

Posted on November 03, 2017 at 15:09HI,I have a project which contains 12 different 'targets' defined by different &sharpdefines. Now i need to edit .h file manually, uncomment one of 12 defines, build it and do the same for all the targets.What is best approach to trigger building project for different configuration by single click/single command...It would be also nice to have output files (s19) named according to selected target.Thank you in advanceKrzysiek#cosmic-compiler #stm8

Posted on November 03, 2017 at 08:03Is there any people who achived to download COSMIC tool for STM8?

Posted on November 03, 2017 at 09:07Please kindly help to  provide the tray drawing of  STM8L151C6T6, thank you!(Packing drawing for package UFQFPN 48 7X7X0.55 )#tray #stm8l151c6t6 #packing

Posted on October 23, 2017 at 19:44Problems counting pulses between 5hz-100hz on STM8s003f3p hikindly help my design.     i am using stm8s003f3p micro-controller. timer 1 input capture unit doesn't work as i intended. i searched web forums and blogs i couldn't find  solution for counting pulses between 5hz-100hz. i used standard peripheral library to change according to my need.i modifed tim1 input capture example to count pulse and send period values over UART1.i here by attach my code as well.please help me to find solution.

Posted on October 29, 2017 at 17:54Hello,in en.stsw-stm8069 firmware for the STM8S001J3 ist not included.Where can i download it?Thanks.

Posted on October 23, 2017 at 21:36I'm looking at file stm8l10x_gpio.c from the 'standard peripheral library'http://www.st.com/content/st_com/en/products/embedded-software/mcus-embedded-software/stm8-embedded-software/stsw-stm8012.html and there does not seem to be a function to switch individual GPIO bits atomically.For example the following compiles with Cosmic compiler to read-modify-write sequencevoid GPIO_SetBits(GPIO_TypeDef* GPIOx, uint8_t GPIO_Pin){ GPIOx->ODR |= GPIO_Pin;}as well as this:void GPIO_WriteBit(GPIO_TypeDef* GPIOx, GPIO_Pin_TypeDef GPIO_Pin, BitAction GPIO_BitVal){ if (GPIO_BitVal != RESET) {  SetBit(GPIOx->ODR, GPIO_Pin);

Posted on June 14, 2017 at 11:58Currently I have an issue when trying to allocate a structure to RAM.The issue I have is that my structure occupies a total of 373 bytes but the compiler/linker is insistent on trying to locate this structure in the zero page (first 256 bytes). To enable compilation I have reduced the size of the structure to allow for viewing of the map file to see where the compiler is allocating this data.I have attempted to use the pragma directives to allocate this structure to the @near range, which would allow anywhere within the RAM space. This again gave me a section overflow of the zero page! To go one step further I have defined my own section within the RAM space with the required size memory allocation. I have positioned this directly after the zero page and prior to the .data section. Using absolute addressing and the pragma directives I am still experiencing the same issues, or, now I have an error a

Posted on September 11, 2017 at 09:15Hello. Answer please. Is there a STM8 model that has a parallel external RAM interface? Thank you in advance.

Posted on October 27, 2017 at 12:33when i programming in stvp, it shows like this

Posted on July 29, 2016 at 18:11I have been using the GPIO_WriteBit() function to set/reset pins, but found it not working. The same function by register worked fine.Example:GPIO_WriteBit(GPIOB, GPIO_Pin_4, RESET); // this does not work!?GPIOB->ODR &= 0xef;   // this is ok.I check the source code of GPIO_WriteBit() and suspect there is a bug. Specifically, when RESETing, the function calls    ClrBit(GPIOx->ODR, GPIO_Pin);whereas macro ClrBit is defined as    &sharpdefine ClrBit(VAR,Place)    ( (VAR) &= (uint8_t)((uint8_t)((uint8_t)1<<(uint8_t)(Place))^(uint8_t)0xFF) )It seems that it intends to do ChlrBit(GPIOB, 4) but instead does ClrBit(GPIOB, GPIO_Pin_4), which is not working.Can somebody confirm this? #std_lib #stm8l

Posted on October 25, 2017 at 07:04How to write option bytes in assembly language for stm8 mcu in stvd developer using cosmic compiler.I have to set Read out protection without using the stvp programmer.