STM8 MCUs

Posted on May 02, 2013 at 11:25Dear All, I am trying to measure the frequency (and duty cycle) of a 1 kHz to 2 kHz signal which is connected to PD4 using TIM1 capture capability. As far as I can see from the documentation PD4 is connected to TIM1.IC2 which is the default routing. I have setup TIM1 as follows: /* Init TIMER 1 */   CLK_PeripheralClockConfig(CLK_Peripheral_TIM1, ENABLE);   // configure TIM1 channel 1 to capture a PWM signal   TIM1_PWMIConfig(TIM1_Channel_2, TIM1_ICPolarity_Rising, TIM1_ICSelection_DirectTI,                   TIM1_ICPSC_DIV8, ICFilter);   // Select the TIM1 Input Trigger: TI1FP1   TIM1_SelectInputTrigger(TIM1_TRGSelection_TI1FP1);   TIM1_SelectSlaveMode(TIM1_SlaveMode_Reset);   // Enable CC1 interrupt request &nbs

Posted on June 23, 2016 at 21:29I just compiled a quick availability list of RTOSes that are relevant to the STM8 (by having an STM8 or ST7 port, or just being one of the most important RTOSes out there). The list features availability aspects: License, STM8 compiler support, availability for ST7 and STM32. If you know of any RTOSes supporting the STM8 or ST7 that are missing in my list, please tell me so. Philipp

Posted on June 20, 2016 at 13:23Hai,    I have write code for LED blinking for STM8S105K4. I try to program it through ST-Link V2 adapter. But it shows warning as 'Warning : FILE : line 1: Address 0x4800 is out of range and is ignored!'.       I have attached screenshot.     Is there any wrong in the code? or any thing else.         Please do the needful...Thanks in advance #st-link-v2-stm8s-adres-warning

Posted on June 19, 2016 at 14:54Hi all,I want to enable the STM8AF5289 bootloader for downloading the application through serial port. I have downloaded the ST visual programmer for this purpose .Can anyone please provide me the steps to be done for this purpose. #stm8 #bootloader

Posted on June 10, 2016 at 14:03Hi all,I am working on some CAN communication project which allows us to control some external device attached to one node from some other node.Since the CAn bus is a broadcast network and hence a message sent by a node will be received by every other CAn node on the bus. My requirement is that i need to implement a filteration mechanism for the nodes so that a node will only act upon those received messagesfor which it is configured(using some GUI utility). So i need to implement this filter mechanism in my code.I am using STM8SAF52Ax mcu withIAR embedded workbench as developement enviornment.How could i implement this filter process of can messages.I also did web search and read many other tutorials but still i am unable to figure out what to be done. There are use of CAN filter Id and filter mask but i am unable to decide what value to be loade

Posted on June 16, 2016 at 16:34Situation: Chip STM8L151F3U6.Circuit = MCU + LED (work time counter) After manual assembly, we have 80% of the output of defective products.Current consumption in reset from 0.1 mA to 8 mA (from sample to sample).Power supply voltage - 3.3 V.Dropped causes the release of low-quality product: 1. Wrong thermoprofile soldering. Not applicable -large experience ofworkers, high-quality equipment.

Posted on June 13, 2016 at 00:54Version 3.6.0 of SDCC, a C implementation targeting 8-bit architectures including the STM8 was released a few hours ago: Today a new release of SDCC was made. We are now at version 3.6.0. You can get it at: http://sourceforge.net/projects/sdcc/files/ So what's new? * Merged upstream binutils 2.25 * New memory management with lower overhead * Changed default language dialect to --std-sdcc11 * Diagnostic for missing type specifier: No implicit int outside of C90 mode anymore * C11 generic selections * char type is now unsigned by default (old behaviour can be restored using --fsigned-char) * Character constants are now of type int instead of char. * ISO C95 and ISO C11 wide character constants * ISO C95 and ISO C11 wide string literals * Basic sta

Posted on June 12, 2016 at 05:43Hello,I'm currently working on STM8L152R8 and I need to drive a customized LCD glass. The problem is that I can not find any information about LCD_RAM[22:0] bits versus associated segments. For example I don't know which LCD_RAM[x] bit is related to segment 1, COM 1. Is there application note about this? By the way I've read the AN3114 application note (which is about driving LCDs on evaluation boards) and there is nothing about this.Thanks in advance

Posted on December 04, 2015 at 12:05Hi thereWe've just come across a problem which may (not confirmed yet) relate to using a too-recent version of the Cosmic STM8 compiler. My binary works when compiled with 4.3.13, my colleague's does not when using 4.4.2. I think these version numbers are correct, the various elements in use all have different numbers...Is there anywhere that 4.3.13 or other archive versions of the Cosmic compiler can be downloaded? I have a copy, but it would be reassuring if there was an archive on-line somewhere!If we figure out the cause of the problem I'll submit a bug report as appropriate.Best regardsJonathan

Posted on June 07, 2016 at 15:00We are facing issue to generate the binaries for our target microcontroller. The details/settings are as below.Microcontroller - STM8AF6246ST Visual Develop - version 4.3.9Cosmic compiler - version 7.5.1Memory model - Long Stack (+modsl0)Our target executable is in *.s19 format.However, when we Build our software, it is generating different binaries on different machines! All of the settings are same as well as same work space (*stw) is being used.Can anyone suggest us the possible problem?

Posted on June 01, 2016 at 20:52Hi,    I am running my ADC in continuous mode to sample multiple channels multiple times.  I am using DMA to transfer the data to RAM in circular mode.  I am seeing occasional corruptions of individual samples.  I also seem to miss the DMA transfer complete interrupt occasionally.  I assume this is because I am not handing the peripherals correctly.  Right now I reset the ADON bit in ADC CR1 in the DMA transfer complete interrupt handler, but I wonder if there is a race condition.  It is possible that the ADC might do some more conversions before it actually shuts off?     There is a statement in the STM8L reference manual that confuses me, in section 14.3.5 Continuous Conversion Mode.  I will cut and paste a snippet:''In this mode , the ADC does not stop after conversion but continues to the next channel in the selected channel sequence.

Posted on June 02, 2016 at 12:44Hi,I'm trying to use the ST Visual Develop with the Cosmic st8 32k compiler.  I install everything and build the project.  That all works fine.  When I try to connect to the Discovery board with the debugger using Swim ST-link, I receive the following error:Failed to connect target.Starting debug session... -> Emulator reset (usb://usb)...  ** Connection error (usb://usb): swim error [30200]: st-link connection error -> Failed to connect target.

Posted on June 02, 2016 at 12:42while debug the program i got this error so please help me Emulator reset (usb://usb)...  ** Connection error (usb://usb): swim error [30200]: st-link connection error -> Failed to connect target.

Posted on May 31, 2016 at 08:15Hello,I am using STVD for STM8 project. I am facing a build error for 'param_assert' function. I am attaching the image for it. I tried including the file 'stm8s_conf.h' but still error persists. Can anyone help me resolve the issue?Thanks in advance.Mike

Posted on May 29, 2016 at 11:50Hi All,I have new application used STM8S003, The MCU using timer1 or timer2 to generator 125khz PWM, duty cycle is 50% with 8Mhz HSI clock source.- This is my code to initial time2:static void Timer2_Init(void){ //Reset value: TIM2_DeInit();  //Config clock for timer2: //timer freq = (clock CPU/8) -> 1bit = 1uS -> 8*1uS=8uS (125khz). TIM2_TimeBaseInit(TIM2_PRESCALER_8,8);    /* PWM1 Mode configuration: Channel1 */  TIM2_OC1Init(TIM2_OCMODE_PWM2, TIM2_OUTPUTSTATE_ENABLE,500, TIM2_OCPOLARITY_HIGH);        TIM2_OC1PreloadConfig(ENABLE); TIM2_ARRPreloadConfig(ENABLE);   TIM2_Cmd(ENABLE); }- System clock init:static void System_init(void){ CLK_DeInit(); CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV1);//CPU Prescaler = 1/

Posted on May 17, 2016 at 16:56Hi All.When using the STM 32f407 board.I want to create a library at keil uvision,based purely ANSI C.i just want the user to have an api h file and the library ,when i want all the library functions and variables (and code...) to be hidden.I created the library project and still i see the variables and function.I want this library and h file to be used by other projects at keil uvision.Thanks 

Posted on May 13, 2016 at 22:26 Hello forum, i am currently trying to use the STM Standard Peripheral Library with ST Visual Develop & Cosmic C Compiler. I downloaded the Standard Peripheral Library and included the header files in 'Include Files' in my Project Directory. I inlcuded the header file 'stm8s_spi.h' but as soon as i want to use a SPI function (such as 'SPI_DeInit()' and compile i get an error like this: Running Linker clnk -m Debug\adxl345_spi.map -l ''C:\Program Files (x86)\COSMIC\FSE_Compilers\Lib'' -o Debug\adxl345_spi.sm8 Debug\adxl345_spi.lkf #error clnk Debug\adxl345_spi.lkf:1 symbol _SPI_DeInit not defined (Debug\main.o ) The command: ''clnk -m Debug\adxl345_spi.map -l'' C:\Program Files (x86)\COSMIC\FSE_Compilers\Lib '' -o Debug\adxl345_spi.sm8 Debug\adxl345_spi.lkf '' has failed, the returned value is : 1 exit code=1. Do you have any idea what i miss? With best regards #i2c #spi #crosstalk

Posted on May 20, 2016 at 13:20 Unable to clear I2C BUSY bit in STM8S-discovery Hello Friends,  I have working experience of stm32f0xx microcontroller. But in case of stm8s003xx discovery board, I am stuck with a deadlock and am not able to move even a bit.The BUSY bit in I2C.SR3 is always set it is not getting freed, according to datasheet it can be set only Hardware, it is also listed in errata list to be solved in future versions. it is completely undeterministic. Please help my way out #i2c #i2c-busy-bit-set #stm8-discovery

Posted on May 18, 2016 at 17:34Hello forum,i am struggeling with the configuration of the I2C peripheral. Because there are literally NO tutorials out there how to do that i am asking here on this forum if anyone could give me a piece of code of how to initialise the I2C module and how to send and receive data.Thanks a lot in advance

Posted on May 18, 2016 at 16:00Hi Sir,Due to cost issue, I need to cost down from STM8S103 to STM8S003, could you kindly let me know what's different between these two part? Is there existing any known issue from STM8S003 that not written in lastly errata sheet yet? I asked  because I heard from ST distributor that is responsible our business said, STM8S003 has memory lose issue and power on rest issue? He means, the Flash ROM will crash after prolonged use (not programming times, he said more times power on/off will cause this ). Is it true? If so, any workaround for this issue?

Posted on May 17, 2016 at 17:30Hello am working with the timer1 input capture of an STM8S103F3. No input is registered by the input capture module though I fed it with square waves from 10Hz all the way up to 1MHz. The same square wave registers properly in the input capture module of a pic micro. I have seen that the PC6 (TIM1 Channnel1) pin is set to TIM1 channel1 as an alternate function but I have not found anything helpful in the STM8S standard development library. I have pasted my code below in case anyone can help thanks: #include ''stm8s.h'' void main() { CLK_DeInit(); CLK_HSICmd(ENABLE); CLK_LSICmd(DISABLE); CLK_HSECmd(DISABLE); CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1); CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV1); GPIO_Init(GPIOC, GPIO_PIN_4, GPIO_MODE_IN_FL_NO_IT); CLK_CCOConfig(CLK_OUTPUT_CPUDIV32); C

Posted on April 19, 2016 at 03:16Hello everybody. Can someone point me to a simple ''Hello world'' LED blinking example for STM8?My situation is as following:I found http://www.electroons.com/blog/stm8-tutorials-2-hello-world-program/ and I tried to do it here. It did not work (no ''stm8s.h'' file)later I found that this file is included in the ''STM8 firmware library''. So I searched for it and thanks to help in this forum I could finally find it...(thanks!)However even with this file it does not compile. I also tried to build the examples in the library (they are supposed to work right?) well it didnt work either.So can someone point me to a simple tutorial for blinking a led??

Posted on April 28, 2016 at 10:42 Hello everyone, I have a problem with the following ADC1 initialisation code with a STM8S003F3. void ADC_StartNtcMeasurement(void) { ADC1_DeInit(); ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, //ADC1_ConversionMode ADC_CHANNEL_NTC, //ADC1_Channel ADC1_PRESSEL_FCPU_D8, //ADC1_PrescalerSelection ADC1_EXTTRIG_TIM, //ADC1_ExtTrigger (not used) DISABLE, //ADC1_ExtTriggerState ADC1_ALIGN_RIGHT, //ADC1_Align (Byte order) ADC1_SCHMITTTRIG_CHANNEL0, //ADC1_SchmittTriggerChannel DISABLE); //ADC1_SchmittTriggerState ADC1_DataBufferCmd(ENABLE); //Buffered mode ADC1_StartConversion(); } As soon as ADC1_StartConversion() is executed (it sets the ADON bit), the OVR bit in ADC1->CR3 is set. After the initialisation I wait in a while loop until the EOC flag is then. Then I read out all 10 hardware buffer registers. It seems to work fine but I don't want to ignore the OVR flag. But

Posted on April 18, 2016 at 14:20Hi!I just tried to verify the FLASH according to CLASS B considerations. I followed the manual by using -ck for .text and -ik (.checksum area) flags for the linker,The descriptor is inside the s19 file, the map file shows 10 bytes as expected. My codesize is around 64k (I did not check lower sizes, but exceeding 64k boundary). I have to use the long stack model for my code.All _checksum/_checkCRC functions fail (result is not zero). I do not use breakpoints (I read the hint in one post), but it still does not work. The descriptor area starts at 0x18b96, code area at 0x9528-0x18b96.I tried Cosmic 4.3x and 4.4x (dongle license). No luck.What could be the reason for that?Best regards,HaJo

Posted on April 19, 2016 at 07:45Hello,I amlooking for source code of ST STEVAL-IAS003V1 evaluation board board.UnfortunatelyI can not find in on ST web site and trough the Google to...Pleasehelp.Regards,Alex.