STM8 MCUs

Posted on June 18, 2018 at 15:46Hello all,I would like to run a script when building a project in STVD before the preprocessor (the script generates a header).Is there any way of doing this?#stm8 #stvd

Posted on June 21, 2018 at 11:40Hi everyoneI'm working on a product usung STM8L052C6, annually number produced are around 50000 units..The customer wants (for obvious reasons)to be able to lock the memory, which was easy enough, writing to the ROP byte..But they also want to be able to unlock the chip again, I know the syntax, write AA to ROP, read EOP, write AA, read EOP..But the production machine, runs linux using STM8Flash https://github.com/vdudouyt/stm8flash, and ST-linkv2. At the moment unlocking is not working properly on the main branch of the git version.Have anyone made a fix, or have some great idea ? If other tools are suggested, they need to work on linux with ST-Linkv2 hardware, and be command line programs #stm8l052c6 #rop #stm8flash #readout-protection

Posted on March 21, 2018 at 12:58Hi, We are using STM8AF6246 micro-controller for our requirements.We are using samples provided by ST, while testing we have following scenarios. Auto Wake Up unit is working individually fine.Flash program also working individually (we did settings change for Flash program in ST debugger) good.If we combine both programs AWU and FLASH, 1. flash erase and write operations are not happening and execution is not in our control2. we are not getting expected results and controller enter in to use less state for some time in that time we are unable to flash any program in to the controller. Below we have reference error.

Posted on June 13, 2018 at 12:15Hello,I am looking at using a STM8L152 MCU in a product that detects and measures a combustible gas.There are standards that govern how these products must operate, one of which is EN 50271:2010.STM8L152 has a built-in watchdog feature but for this to satisfy the 'monitoring equipment' requirements of the standard it must operate separately from the main data processing function. This includes the voltage supply. It is okay for the monitoring equipment and data processing function to be connected to the same power supply but they should be connected 'separately'. This is not easy to demonstrate when the watchdog and main data processing function are packaged together.I have looked through various published datasheets/technical docs/ref manual but have not come across detail which would provide assurance that this requirement is being met.The main data processing function derives power fro

Posted on June 17, 2018 at 11:15Hi,I am trying to implement timer based on interrupt in STM8S003F3 using STVD and COSMIC C Compiler free version.I tried following this tutorial available on web http://embedded-lab.com/blog/starting-stm8-microcontrollers/19/ . However, while modifying the stm8_interrupt_vector.c file for adding my TIM2_IRQHandler in the interrupt vector struct under irq no. 13, I am getting this error: 'invalid pointer initializer'. What am I doing wrong here?My stm8_interrupt_vector.c looks like this:typedef void @far (*interrupt_handler_t)(void);struct interrupt_vector {    unsigned char interrupt_instruction;    interrupt_handler_t interrupt_handler;};@far @interrupt_handler_t void NonHandledInterrupt (void

Posted on June 14, 2018 at 09:51Hi,I want to use stm8s003f3 in my project. I was under the impression just like stm32 the ide and tool chain might be easily available. However, the same was not the case. I installed STVD as my IDE and wanted standard peripheral library for programming in C. But I wanted a toolchain for which I chose Cosmic C compiler. The thing is free, but, the license needs be received from Cosmic via email. I have already done the registration and requested them the license by sending my PC details. However, I have not yet received any response yet. I really need it urgently for my application development purpose.Can someone help me out here?Can I get a license temporarily?Are there any better alternatives from ST or other sources?Kindly help me.#stm8-toolchain #stm8 #stm8s-spl

Posted on June 15, 2018 at 06:01STVD 4.3.11v showing connection error while debugging software for STM8AL discovery board. 

Posted on June 18, 2018 at 14:12The ST62 is obsolete. Is there a direct hardware replacement processor that would work in this application? Would the supplied software program for the ST62 be compatible with the new processor?Thanks#multiplex-lcd

Posted on June 13, 2018 at 10:44which software use for stm8l151f3 controller in linux(ubuntu)

Posted on June 15, 2018 at 10:42The STVD calls it ''Optimize Size of Enum Variables''However it does the opposite:The Cosmic support said:We checked your problem and by default, the compiler sets enum in 8 bit wide when possible. We suspect that STVD may have set a compiler option: -pne (no enum optimization). #stvd #optimalization #bug #cosmic

Posted on February 11, 2018 at 20:28stdcbench, a new benchmark for embedded systems and results for the STM8 For benchmarking C implementations, the there are a few benchmarks, but they all have their problems. Many benchmarks have memory requirements that are far too high or need functionality not necessarily available.Some are quite one-sided in what they measure: Whetstone, Dhrystone, Coremark all pose as generic benchmarks, but in reality, at least for 8-bit systems, scores are dominated by one single aspect (floating-point performance for Whetstone, string processing for Dhrystone, integer multiplication for Coremark).So, I deciced to write a new benchmark, stdcbench. I wanted it to be suitable for small systems (4KB of RAM, about 32 KB of Flash). There is a trade-off here, since all the data and code will fit easily into caches on bigger systems, but IMO it is worth it.The current version consists of 2 modules, wh

Posted on May 26, 2018 at 12:07Hello to everyone,I'm designing a simple remote control using STM8L001J3.To generate a unique 24bit S/N, I would to use the 96bits (12bytes) UNIQUE ID of the micro, readable from 0x4925 address.There is someone who has already experimented with some method, or algorithm for the calculation?

Posted on June 12, 2017 at 10:36 Hello all, I would like to generate register map definition header files preferably for all STM8 MCUs to for the SDCC project. Is there any database (XML, MDB, whatever) from what I could generate it without hurting any license? Thanks in advance! #sdcc Note: this post was migrated and contained many threaded conversations, some content may be missing.

Posted on June 07, 2018 at 21:07I'm having a little confusion interpreting the STM8S reference and STM8S903 data sheet.  The STM8S903 is the part with TIM5 and TIM6 instead of TIM2 and TIM4, and adds the advanced triggering mechanism that allows linking the timers via trigger signals.I'm feeding TIM1 an external clock via TIM1-ETR, and using all four CAPCOM output channels to drive external pins.  The advanced features of TIM1 work well for this, since it has those four external channel pins and the ability to use an external pin as the clock source.There is also a comment in the STM8S reference (�17.4.5) that says, 'External clock mode 2 can be used with another trigger mode. For example, the ETR can be used as the external clock input, and a different input can be selected as trigger input (in trigger standard mode, trigger reset mode, or trigger gated mode).'I would like to- use TIM1_ETR as TIM1's cloc

Posted on June 06, 2018 at 15:12Hello ST Community,I´m using a STMS8105x6 MCU that has an appilcation running that communicates with other MCUs via UART and I2C. I also have a IWDG running, that does sometimes a reset because of communication errors.What I want to know is, how to save a global volatile uint32_t variable that has an important value, that should not be lost at a watchdog reset.Saving it to the EEPROM at every change is not an option. But maybe it can be stored into a backup register or the RAM somehow. Or can I prevent it from being newly initialized at startup?!Using STVD + Cosmic Compiler.Thank you in advance for your help.MaBo

Posted on April 11, 2018 at 05:58Dear all,First I would like to thank you for any help that you might give me.My purpose is to flash an empty code in the uC (STM8AF5288TAY) but its always says ''lost SWIM communication''.After analyse of our self designed board, I remarked that the problem might come from the NRST pin of the uC.There is only a condensator connected to this pin during my test :But you can see that the signal NRST(shown below) is not pulled up as it should be :

Posted on June 06, 2018 at 21:49There used to be a STM8 MCUs community.Now that community is no longer in the list of ST communities. Yesterday, I got a cancellation notification for the STM8 MCU event I had created there (the event was in February, so I originally though it was cancelled due to being a few months in the past). The old STM8 MCU community page not gives an error message 'Unauthorized - This place or content does not exist or access to it is restricted. If you think this is a mistake, please contact your administrator or the person who directed you here.'Why was the STM8 MCUs community and the content there deleted?Philipp#forum #stm8 #stm8-community #community

Posted on June 05, 2018 at 17:09Hi,I have been doing a little work recently with the STM8S003k3 Discovery board, where I attempting to create a 800Hz signal with a 80/20 duty cycle. The issue I am experiencing is that I have no output on the pin!Now I'm almost certain that loading values etc are correct and this is instead a order of operations issue, with that being said, what is the correct procedure for register configuration etc? At the moment I am working as follows:1. Set HSI and enable clock to timer 22. Initialise GPIO for input floating no interrupt PB6 & PB7.3. Initialise GPIO for output push-pull fast mode PD2 (Timer 2 CH3).4. Set prescaler and set ARR (*MSB first), (**PSCR LSB first).5. Set CCR3 with value to obtain 80% duty cycle.6. Set CCER2->CC3P = 0, active high.7. Set CCMR3->OCM = 6, PWM 1 mode.8. Set CCER2->CC3E = 1, enable CAPCOM3 output

Posted on July 25, 2017 at 21:32Hello ,Sir/Madam I am working on STM8S (STM8S003F3) MCU . This is 20 bit MCU. I So i am using 2 timers TIMER1 CHANNEL2 (on pin no. PC7 ) and TIMER2 CHANNEL1 (on pin no. PD4) and i select ARF0 OPTION BYTE for TIMER1 CHANNEL2  then TIMER2 CHANNEL1 (on pin no. PD4) does not work , but both are separately  working . so now what is problem occur when we use both at a time . Thanks

Posted on May 31, 2018 at 08:54Hello all,1) I am new to ST MCUs, and I had developed a simple code based on STM8L DISCOVERY (STM8L152C6T6) to read three ADC channels (IN_16, IN_17, and IN_18) once at a time in sequence and print them to the UART as shown in the code below.         Apparently, it works fine to read the three ADC channels. However, I would like to ask the experts, Please what is the optimal code to do it? and how to optimize my code?.2) One more thing please, what is the correct way to make the mentioned MCU (STM8L152C6T6) goes into a deep sleep mode for a certain amount of time (for example 10 seconds) directly after it finishes reading the three ADC channels and prints them to the UART? (i.e. the MCU will sleep>wakeup>sleep... continuously).Thank you very much in advance,#include 'stm8l15x.h'#include 'del

Posted on June 05, 2018 at 09:42suddenly this problem generate.I checked every pin, but I do not.USB can not be plugged in again dozens of times.plz help methank you

Posted on November 05, 2017 at 21:24Hello everyone,Looking at the documents on the chips, I did not find any significant differences. Tell me please how they differ, and which model is preferable 003 or 903?Thanks.#stm8s903 #stm8s003 #stm8s #differe

Posted on June 04, 2018 at 08:05 Hello I'm use STM8L151G6 I'm trying use block programming as below: //Unlock EEPROM memory FLASH_Unlock(FLASH_MemType_Data); while (FLASH_GetFlagStatus(FLASH_FLAG_DUL) == RESET); FLASH_ProgramBlock(0, FLASH_MemType_Data, FLASH_ProgramMode_Standard, buffer); while(FLASH_GetFlagStatus(FLASH_FLAG_HVOFF) == RESET);�?�?�?�?�?�? But cpu always stops inside FLASH_ProgramBlock function, between instructions : /* Standard programming mode */ FLASH->CR2 |= FLASH_CR2_PRG;�?�? and /* Copy data bytes from RAM to FLASH memory */ for (Count = 0; Count < FLASH_BLOCK_SIZE; Count++) { #if defined (STM8L15X_MD) || defined (STM8L15X_MDP) *((PointerAttr uint8_t*) (uint16_t)startaddress + Count) = ((uint8_t)(Buffer[Count])); #elif defined (STM8L15X_HD) *((PointerAttr uint8_t*) (uint32_t)startaddress + Count) = ((uint8_t)(Buffer[Coun

Posted on May 30, 2018 at 13:09Hi!I need time-delayed interrupt using TIM1 in my STM8S105K4 project in IAR free IDETIM2 & TIM3 already in use.void SetupTimer1(){  #define TIM1_PRESCALER 16000L// once 1 msec  TIM1_PSCRH = (unsigned char)(TIM1_PRESCALER>>8);  TIM1_PSCRL = (unsigned char)(TIM1_PRESCALER);  #define TIM1_LIMIT 1000L// once 1 sec  TIM1_ARRH = (unsigned char)(TIM1_LIMIT>>8);  TIM2_ARRL = (unsigned char)(TIM1_LIMIT);    }void StartTimer1(){  TIM1_CR1_OPM = 1; // One Pulse Mode enabled  TIM1_CR1_URS = 1;  TIM1_IER_UIE = 1;  TIM1_CR1_CEN = 1; }void StopTimer1(){   TIM1_SR1_U

Posted on June 02, 2018 at 18:01I've installed STVD for some work to do with some stm8s processor. However STVD keep crashing everytime I select 'tools/programmer'. Sometime (but rare) when I can go behond, I acess the dialog box but crashes again as soons as a click something. I'm on Win7 using Cosmic compiler. I reinstalled the program with the same result. If someone has a solution I'd be happy to know it.Thanks.#stm8 #stdv #bug #crash