STM8 MCUs

Posted on November 29, 2016 at 09:37If you have a store bought URC-6131, URC-6011 (aka URC-6012) or any other remote that needs an EEPROM added and you're thinking of modifying it yourself so you can program it using JP1, please read on. How do you know if your remote needs modifying? Well, if when you look in the battery compartment you see 6 holes rather than a 6-pin connector, your remote needs modifying! We get alot of posts from people wanting to know why their JP1 setup isn't working, they then go on to explain that they have one of these 2 remotes and they have soldered in the 6-pin connector, but they obviously don't realize that there are other parts that need to be soldered in. Both remotes also require that you solder in an EEPROM chip. A 24C16 chip like 

Posted on November 27, 2016 at 13:53Hi! I'm trying to implement a SWIM programmer using only the datasheets, for an STM8S003F3. I have got the basics working (swim entry, rotf, wotf, srst). An I've been trying to figure out how to actually program the flash. I can write MASS key to FLASH_PUKR and can verify that PUL is set. I can verify FLASH_FPR is unset. As far as I can tell, issuing wotf commands to the flash memory region (0x8000-0x9FFF) should be all that is required, but doing so only sets WR_PG_DIS in FLASH_IASPR, indicating that memory is protected. What am I missing here? Thanks in advance! //Mats #swim-wr_pg_dis-flash-stm8

Posted on September 06, 2016 at 10:20I am working on a project, which is based on STM8 MCU. I am using ADC to read the ambient temperature. Sometimes I am getting temperature ADC readings which are greater than the usual ones. Most of the time the samples are 608-611, and sometimes they reach value as high as 620 (in the same ambient temperature). I reproduced this in a simple program, which has the following loop: Init; configure RTC to wakeup every 100ms; initialize ADC; enable interrupts; while (1) {   rtc wakeup enable;   halt;   rtc wakeup disable;   read ADC temperature value; } I have the following ADC configuration for reading temperature: ADC_Init(ADC1, ADC_ConversionMode_Continuous, ADC_Resolution_12Bit, ADC_Prescaler_2); ADC_SamplingTimeConfig(ADC1, ADC_Group_FastChannels, ADC_S

Posted on November 16, 2016 at 12:55Dear all I tried to read  ADC1 channels in stm8 in cosmic compiler, but still I could not. as far as the main program start to config the ADC1 initialization nothing happen. I do not know what the problem is with interrupts. there is no error in builder. hex files came out. void ADC_CONFIG(void) {     ADC1_DeInit();     ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_9,ADC1_PRESSEL_FCPU_D2, ADC1_EXTTRIG_GPIO, DISABLE,     ADC1_ALIGN_RIGHT,     ADC1_SCHMITTTRIG_CHANNEL9,DISABLE);     ADC1_Cmd(ENABLE);     ADC1_ITConfig(ADC1_IT_EOC, ENABLE);     ADC1_StartConversion();     enableInterrupts(); } here is the configuration codes for ADC1. but unfortunately I can not see any result in interrupt functi

Posted on November 21, 2016 at 13:34Hi everyone. I have an .HEX file that I would like to program in a STM8AF62A8 MCU. I load the .HEX into STVP and it seems to be flashing the memory correctly because I can see some of the application's startup output through the serial port (it does it repeatedly due to the MCU being restarted multiple times during programming, I assume). The problem is that, as soon as the process is over, the MCU stops responding and I get no serial output when I reset the MCU manually. #hex #stvp #stm8

Posted on November 16, 2016 at 17:46I've narrowed the issue down to the program getting stuck in a while statement indefinitely.  Per the attached file, it is looping indefinitely at line 361.  Nicolas Fillon said I needed to implement some reliability code into the I2C polling, similar to that shown with respect to lines 169-176 of the attached.  However, I'm a bit confused as to how to go about doing that since if I understand correctly, the reliability code needs to return a ERROR or SUCCESS, as per the ErrorStatus function of line 152.  Unfortunately, my function is LM33_WriteReg, which starts at line 354, and is not set up to return ERROR or SUCCESS.  A stm8_eval_i2c_psensor.c was developed out of the nearly identical stm8_eval_i2c_tsensor.c for when the 2nd I2C peripheral.  There are times that the code doesn't get stuck in an infinite loop at line 361, but it gets stuck plenty enough tha

Posted on July 25, 2015 at 18:48I wanted to compare how the most important C compilers for STM8 perform on some standard benchmarks. However, I've run into a problem with Whetstone: I get linker errors for the math functions in the Cosmic and Raisonance compilers. Both provide the math.h header, but apparently there are some extra steps needed that I don't know about. In Cosmic 4.3.13: error clnk stm8s208mb.lkf: symbol f_cosf not defined In Raisonance 2.56.15.0092: ERROR 100: UNRESOLVED EXTERNAL Philipp

Posted on November 10, 2016 at 08:25Hi All,     I'm doing a project on STM8L micro controller. I have written a program in IAR Workbench which alters the value of the data memory in the STM8L EEPROM. I would like to run the same IAR Workbench program from command line. It should take an argument which is an input for the program to run.  The specific use is to write the data memory of STM8L EEPROM with the specified command line input value. (I want it to function like GCC command line argument.)     I have gone through IarBuild.exe but I couldn't make use of it to implement this as there is not much documentation available in the public domain (or did I miss something?). It would be wonderful if someone who has worked in similar lines could give me an insight. (Sorry for the grammar mistakes and thank you in advance). #commandline #stm8l #command

Posted on November 09, 2016 at 11:11Hello all, I am new to cosmic compiler. Using IdeaSTM8 IDE I just wanted to create a new project. I have followed procedure suggested in ''Quick Start Guide'' pdf file. But I am getting below mentioned error. &sharperror clnk example.lkf:1 symbol f_main not defined (C:\Program_Files(x86)\COSMIC\FSE_Compilers\CXSTM8\LIB\crts.sm8)Can anybody please help me to get rid from this problem?Thanking you. #cosmic #stm8-cosmic-ideastm8

Posted on November 09, 2016 at 10:51I just got the STM8 Discovery board, however the ST link utility programme says ''cannot connect to target'' and to choose ''connect on reset'' in the target-> settings menu. There is no ''connect on reset'' option in the settings menu. The board powers up, and the st link utility connects to the stlink programmer part just fine (it connects and can see the firmware version etc). What am I doing wrong here?

Posted on November 07, 2016 at 10:14The original post was too long to process during our migration. Please click on the attachment to read the original post.

Posted on March 19, 2013 at 20:55Hello all STM comunity,First of all my apologies for my English, my language level is rather basic yet. That said, I will proceed to explain te reasons as I am writing this post.I am a Spanish estudent and I am developing a proyect with the demo board stm8l discovery. For this proyect I need to comunicate the MCU with an external ADC, becouse I need a 18-bit resolution.So I am trying to comunicate STM8L DISCOVERY (master) with MCP3424 (Slave).Folowing I2C protocol, at first I check that the I2C bus is not busy anymore and next, I send the start condition. The problem is that after I send the start condition, SDA goes low (that its correct) but SCL goes lo too and no clock signal is generated, SCL is low level constantly.I have tried to change the I2C bus frecuency, the pull up resistor are correct, and the chip is not borken. The start condition fun

Posted on October 27, 2016 at 07:58Could you provide the MTBF / FIT numbers for the STM8 series and/or specifically the STM8AL3188TAX? #stm8-mtbf-fit

Posted on October 26, 2016 at 21:30Are the example libraries compatible between similar MCU's? For instance the STM8L15x StdPeriph_Driver includes stm8l15x_pwr.c/.h  but the STM8L10x StdPeriph_Driver does not have those.  I was wondering if I could use those same files for the STM8L10x.  Thanks,Nick

Posted on October 17, 2016 at 11:20Hi,I used to work with Microchip PICs and the compiler c18 provided string constants holding the compile time & date, updated in compile (or link ?) time; examples:__DATE__ == ''Jul 08 2016''__TIME__ == ''10:56:03''Does Cosmic provide anything similar ?

Posted on October 25, 2016 at 07:47Hello all, I am using NXP's  TJA1028T/5V0/20/1J  LIN transceiver with STM8 board. To bring LIN transceiver into ''Normal Mode'', is it mandatory to feed 5V supply to EN pin and VBATT pin of transceiver?  I have fed 3.3V to EN pin and 3V to VBATT pin. It is not working. Other pins I have connected correctly.Note:  The LIN transceiver is activated when the TJA1028 enters Normal mode.In Normal mode, the transceiver can transmit and receive data via the LIN bus. Thereceiver detects data streams on the LIN pin and transfers them to the microcontroller viapin RXD. LIN recessive is represented by a HIGH level on RXD, LIN dominant by a LOWlevel.  (This is mentioned in data sheet) #stm8 #lin-tranceiver

Posted on October 20, 2016 at 07:51i am learning to program in embedded C by myself and i have bought an stm8s003f3P6 microcontroller and  a STLINKV2 programmer to program device and i under i can use STVISUAL DEVELOPE code or IAR EMBEDDED WORKBENCH but still i am not able to wrap my head around about which is the best and simple enviroment to use like atmel studio for atmel devices. I have experience with atmel devices and i am able to program them but i am not able to understand st just yet. Please if somebody could guide me the way to program stm8s003f3p6 device from scartch or could point me to an useful tutorial . that would be very kind of you .thank you #stm8s003f3 #stvd #- #iar-workbenc

Posted on October 17, 2016 at 11:12Hi,is it possible to specify Options bytes in source file ?I mean something similar to what I use with Microchip PIC18 (in .c files):#pragma config  WDT = ON // WDT Enabled#pragma config  WDTPS = 256 // Watchdog prescaler 1:256#pragma config  CP0 = ON // Program memory is code-protected#pragma config  IESO = OFF // Two-Speed Start-up disabled#pragma config  FOSC = HS // HS oscillatoror with Microchip PIC16 (in .asm files): __CONFIG _DEBUG_OFF & _FCMEN_ON & _IESO_ON & _BOD_ON & _CPD_ON & _CP_ON & _MCLRE_ON & _PWRTE_ON & _WDT_ON & _HS_OSCI have found only one method yet, which is via STVD->Tools->Programmer->OPTION BYTEThis is very clumsy, I would like to provide customer a single .s19 file that contains everything.

Posted on October 10, 2016 at 15:13Hi,I made a primitive program that calls few functions of Standard Peripheral Library / CLK and GPI modules, so source files  stm8s_clk.c + stm8s_gpio.c were added to project.After compilation I checked .map file and found that code contains ALL functions of these modules, despite most of them are never called.What needs to be done in order to not compile unused functions ?

Posted on September 13, 2013 at 18:37I've looked over UM0151 and have thus far successfully developed python code that can program STM8 chips using the discovery board programmer, and modify the image.I am trying to rapidly develop a programming/test suite for manufacturing of a product in development. I have found UM0151 to be very vague. There is no mention of chip-unlocking whatsoever. I have read of ways to do this with MASS, but I am not sure how to translate this into API calls using the STVP Dlls.Another annoyance about the STVP dlls is their undocumented functions and proprietary database system. Why should I waste an afternoon writing code before I even understand what the database contains? End rant.I'd appreciate some help.Chip; STM8S005 #stm8s005 #st-link #stvp #icp

Posted on October 14, 2016 at 09:02Hi, I used the ST Visual Develop with Cosmic STM8 free tools with no limits version to compile a C program. However, some errors were shown, ''&sharperror clnk debug\stm8 gerenal io program.lkf:1 can't open file debug\stm8 gerenal io program.lkf  The command: ''clnk -m ''debug\stm8 gerenal io program.map'' -l''C:\Program Files (x86)\COSMIC\FSE_Compilers\CXSTM8\Lib''  -o ''debug\stm8 gerenal io program.sm8'' ''debug\stm8 gerenal io program.lkf'' '' has failed, the returned value is: 1 exit code=1.'' Besides, the pop-up message box was shown ''Could not open the ''debug\stm8 file'' when I push ''Build'' button every time. But I sure that 1) A License for the Cosmic was well installed because I already checked HKEY_CURRENT_USER->SOFTWARE->FLExlm License Manager-> COSMIC_LICENSE_FILE. 2)My C Program is small than

Posted on October 13, 2016 at 08:53 Hi All, When I use STM8AF6223 read data from eeprom 24C128,I can't poll RXNE flag. This is my code for Read Eeprom: uint8_t Read_EEPROM(uint8_t EepAddr,uint8_t RegAddr) { uint8_t data=0; /* check busy flag ----------------------------------------------------------*/ while(I2C_GetFlagStatus(I2C_FLAG_BUSBUSY)==SET); /* send START and check EV5 -------------------------------------------------*/ I2C_GenerateSTART(ENABLE); while(!I2C_CheckEvent(I2C_EVENT_MASTER_MODE_SELECT)); /* send Eeprom Address +Write and check EV6 ---------------------------------*/ I2C_Send7bitAddress(EepAddr,I2C_DIRECTION_TX); while(!I2C_CheckEvent(I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)); /*send Register Address for Read data ---------------------------------------*/ I2C_SendData(0x00); // First Word Address while(!I2C_CheckEvent(I2C_EVENT_MASTER_BYTE_TRANSMITTING)); I2C_SendData(RegAddr); // Second Word Address while(!I2C_CheckEvent(I2

Posted on March 20, 2013 at 05:19Hi all, I used DAC and it OK on stm8l151C6T6,  this is 48pin MCU. But now i change to 28pin DAC.It not work:     CLK_PeripheralClockConfig(CLK_Peripheral_DAC, ENABLE);     DAC_DeInit();     DAC_Init(DAC_Channel_1, DAC_Trigger_None, DAC_OutputBuffer_Enable);     SYSCFG_RIIOSwitchConfig(RI_IOSwitch_15, ENABLE);      DAC_WaveGenerationCmd(DAC_Channel_1, DAC_Wave_Noise, ENABLE);     DAC_Cmd(DAC_Channel_1, ENABLE);     DAC_SetChannel1Data(DAC_Align_12b_R, 0x1500); I measure at Pin PB4, but it alway low. Please help me. Best regards Thinh

Posted on October 07, 2016 at 15:06Hi,I have just started with STM8 and would like to found the fastest toggling method.Currently I have best result with following code: while (1) {#pragma asm push A pushw X ld A, #1 // toggle with pin D0 ldw X, #0x500f // GPIOD (port D output latch) clr (X) ld (X), A clr (X) ld (X), A clr (X) ld (X), A clr (X) ld (X), A clr (X) ld (X), A clr (X) ld (X), A popw X pop A#pragma endasm }The block of 6x CLR / LD makes ''bit clear'' / ''bit set''.Size of both instructions is 1 byte, so fetching shouldn't cause any delay.The result is Low 62.5ns / High 125ns (i.e. 1c/2c @16MHz), repeating 6x.I don't understand why the 1c/1c toggling is not achieved.I would like to ask for explanation of this and so

Posted on October 06, 2016 at 07:47Hello all,               I am new to LIN protocol, stuck in establishing LIN communication between STM8AF and STM8AL boards. I am referring to example code found in STM forum for LIN communication. I have downloaded code into STM8AF and STM8AL. But couldn't establish communication. Can anyone give generalized ideas to establish the communication?Thanking you all. #lin #stm8