STM8 MCUs

Posted on May 31, 2018 at 16:19hello, can you help me please, to have in assembler an array of more then 16 bytes. i tryed this 'table dc.b  $ff,...........$FF,' but it just accept max 16 bytes, my question is how can i reach for example 255 bytes , many thanks#

Posted on May 29, 2018 at 17:58If yes, why this is not mentioned at all in its datasheet?#stm8s

Posted on May 30, 2018 at 11:07Hi,I am working on a custom bootloader code for the STM8S207.using the standard jump routings that are used in the example code AN2659.the example code work fine, when i try to change location from 0xA000 to 0x11000 of main application, execute code     _asm('JPF $11000');  jump fail, it's always reset.

Posted on May 25, 2018 at 10:22I am new to ST.I downloaded and installed STVD and Cosmic Free Compiler on Windows 7I made a project and trying to build I get the following error message.----------- Project helloworld - STM8 Cosmic - Configuration Debug -------------Compiling main.c...cxstm8 +debug -pxp -no -l +mods0 -pp -i'C:\Program Files\STMicroelectronics\st_toolset\stvd\Hstm8'  -clDebug\ -coDebug\ main.c main.c:WIN execution failed The command: 'cxstm8 +debug -pxp -no -l +mods0 -pp -i'C:\Program Files\STMicroelectronics\st_toolset\stvd\Hstm8'  -clDebug\ -coDebug\ main.c ' has failed, the returned value is: 2exit code=2.helloworld.elf - 2 error(s), 0 warning(s)Please help me to get started.

Posted on May 23, 2018 at 07:12I have been using ST visual develop version 4.3.11 with cosmic compiler, I started getting some unknown errors regarding some GDB settings as shown in the files attached. I even tried uninstalling and reinstalling Cosmic with new license still it is displaying same error.I am sending the support file generated through stvd for your reference.Please help me to resolve this error ASAP

Posted on May 21, 2018 at 21:08I have updated some firmware and need to flash the MC on a custom board with a STM8AL3188 and SWIM connector. This is my first project using IAR. I have browsed some tutorials and made sure the Debugger Driver was set to ST-Link. However I do not know what else is needed to establish a connection so I can download the new firmware. So I figured I'd ask the experts.The firmware on the ST-Link was updated to 'V2.J29.S7 STM32+STM8 Debugger: via the STM32 ST-LINK utility. And I am using IAR Workbench STM8 IDE V3.10.4For images of connector, board, and workspace. (https://imgur.com/a/Z4MkB2S)Any help would be appreciated. Thanks!#flash #st-link #stm8

Posted on May 22, 2018 at 16:26Good day everyone. I require professional code to be compiled for a project based on an STM8S003 that interfaces to an accelerometer and SIGFOX transceiver. Please email mailto:electronicdesignpower@gmail.com if you are capable of doing this this project to discuss the details. The budget for this project is US $150.

Posted on May 18, 2018 at 11:05Hi, I would like to use the SWIM port of STM8L001J3 to control an LED.Obviously the same port will also need to be used for debugging and programming.I ask if it is possible to connect the LED directly to the port or if is it better to use a MOS-N (2N7002) to avoid impedance problems?I attach the schematic of the solution with MOS-N.Thank you for your valuable feedback and suggestionsSisto#stm8l001j3-swim

Posted on March 09, 2018 at 10:56ST-LINK Programmer few times its working ,mostly its displaying error messageFailed to set configuration with MCU name STM8AF5289: SWIM error [30006]: Comm init error: chip does not answer connections every thing ok  device will work rarely ,#failed-to-set-configuration-with-mcu-name-stm8af5289:

Posted on February 26, 2018 at 12:00hi  i am kalpesh  , i new in stm8 . I want to learn how to program in stm8. Please tell me which software should i use?please help me . i have Stm8s003f3 20pin IC . i search @ internet i didn't  get ? please help me?sorry for poor englishthank you

Posted on May 14, 2018 at 19:23I am using cheap Chinese board with STM8103F3 chip.I want to use PC4,PC5,PC6 and PC7 pins as inputs connected do keys.With PC5-PC7 there is no problem. I configured them as pull-up input with interrupt, but PC4 is different.If I set interrupt for this pin, my program hungs.I unset interrupt and read GPIOC->IDR = 0xe8, which means that PC4 IDR bit is always 0.I read also CLK->CCOR =0x00 and TIM1->CR1 =0x00 so TIM1 and output clock is disabled.But earlier I use ADC1 with analog input 3 (port D2; ADC1->CSR|=0x03;)I don't use analog input 2 which is alternate function for PC4.I checked voltage on the pin = 3,29V (so pull-up works).So how to force PC4 to work like other PC5-PC7 pins with working ADC1 on another channel?

Posted on May 11, 2018 at 11:33Hi,I am using  stm8s controller. I am using TIM1,TIM4 for timing delay now i need to use PWM for led blinking. Can i use TIM3(general purpose timer) for timing delay or not , because TIM1(16 bit advanced control timer) having 4 capcom channels for PWM  that's why I am asking  TIM1 using for PWM . Can I replace TIM1 with TIM3 or not . Can you please help on this.Thanks & Regards,Sateesh.

Posted on July 04, 2012 at 11:08i cant seem to be able to write in any of the usart registers. i use STVD with raisonance compiler. eg. when i write USART1->CR1 = 0x01; i don´t see any change in CR1 perpheral registers (that i view in STVD window). This works with the other registers.I also remap the usart clk ans tx pin to port A.  Do i have to inlude some other files or do some more remapping etc. to be able to write in the USART register? 

Posted on May 15, 2018 at 22:34Hi.I was trying to end my project but I faced a problem.In my project, the user enters a number named IDEAL_TEMPERATURE. But I need that his data won't get lost when the power supply is suddenly interrupted for some minutes or hours. Or when the watch dog timer (or any kind of reset) resets the MCU.Which part of the reference manual should I look for this?

Posted on May 14, 2018 at 11:29I am trying to program 14 x STM8S003 devices sequentially using STVP_CmdLine but the 14th ST-Link doesn't work, moving the programmers around on the hub and programmers between boards moves the problem showing the programmers all work and the boards are also fine.ThanksLuke#st-linkv2

Posted on May 11, 2018 at 12:59Hi sir,I am working on the stm8s family micro controller. In that i am using TIM1 and TIM4 for timing delay. I configured PWM channels for timer 1. Before timers configuration program is running when ever entering in to timer configuration function code stopped.  I don't know where is the issue.Can you please help on this as soon as possible.Thanks & Regards,

Posted on May 10, 2018 at 14:43Hi.I was trying to write a code to use my keypad, but I face a problem. Because I'm new in using standard libraries I didn't face a similar problem when I was using registers(in LPC series).#define COLUMN_PIN_1    GPIO_PIN_4#define COLUMN_PIN_2    GPIO_PIN_5#define COLUMN_PIN_3    GPIO_PIN_4#define COLUMN_PIN_4    GPIO_PIN_2#define COLUMN_PORT_1    GPIOB#define COLUMN_PORT_2    GPIOB#define COLUMN_PORT_3    GPIOF#define COLUMN_PORT_4    GPIOAfor(j=1;j<5;j++){if(GPIO_ReadInputPin(COLUMN_PORT_j,COLUMN_PIN_j))return (4*(i-1)+j-1);  delay_ms(50);}In this code, I thought that the amount of the j will be replaced and for example when j is 1 COLUMN_PORT_j is COLUMN_PO

Posted on May 10, 2018 at 05:50I have a question rooted in pure curiosity as I am still learning my around the STM8 MCU structure. In the general setup of the ADC, single mode conversion and software triggered,  we have to call ADC_GetConversionValue(ADC1) once the ADC has finished its sampling and conversion cycles. This function should retrieve a value from the register to be saved locally. I expected this function to not take too long, but by roughly measuring the time(toggling GPIO pins around the functions and viewing on an oscilloscope) for the function to execute, I measure 5us. This becomes pretty substantial when you are trying to measure short pulse waveforms, but need a high data point collection set. Does anyone have the explanation as to why this retrieval takes that long? 

Posted on April 27, 2018 at 19:51 Hi. I wanted to know that for example how many clocks a while loop takes. Do you have any ideas or any articles on this matter? Note: this post was migrated and contained many threaded conversations, some content may be missing.

Posted on April 18, 2018 at 06:00Hi,I feel like I've been through the reference manual a million times, but I cant figure out how to get my project into low power mode.I'm driving a LCD screen with a counter on it. I have two external switches to wake up count up and down. And I'm using timer4 to hopefully wake up periodically and do some work. I need two low power modes, one with the LCD on and it just wakes up to handle a button press or a timer4 timeout.The other low power mode will turn off the LCD and will only wake up on a button press. It needs to wake up and not reset because I don't want to lose count on the LCD.To save power I'm running off LSI clock.  Code below. Any ideas would be greatly appreciated. I'm new to STM8main(){   CLK_CKDIVR = 0b0; //Div clock by 1  CLK_SWR = 0x02; //Sys clock is LSI (38kHz)  CLK_SWCR |= 0x2; //Tell syste

Posted on May 10, 2017 at 10:46I am working on a code which utilizes External interrupts on the PORT B.STM8AF5286 is used with the Cosmic compiler.I have not found any information about how the interrupt flags are handled internally and knowing their behavior would be important for my project.On the logic analyzer capture below you can see that the pulse on the PORTB 0 is 1.26 us, which triggers two interrupts. which first and last instruction toggles the pin captured with the ISR channel.The PB_ODR read is performed in the next instruction after the ISR pin low to high transition. In both routines it reads zero from the PORT B.Is there any way to clear the

Posted on December 09, 2017 at 23:11[STM8L001J3] Low-power STM8 MCU in 8-pin SO-8 packageDear STM8 users,ST has just officialy introduced to the market new low-cost, low-power 8-bit MCU from STM8 family. This device is named STM8L001J3 and its key new features are small pin count (8 pins) and tiny package (SO8N).After introducing in July first 8-pin STM8 MCU (http://www.st.com/en/microcontrollers/stm8s001j3.html), new STM8L001J3 complements portofolio of 8-pin STM8 MCUs.STM8L001J3 belongs to STM8L Value line of ultra-low-p

Posted on May 07, 2018 at 13:13HiI am looking for driver C ciode for ALED1642GW.   where can I find the firmware source code for STEVAL-ILL073V1? Why isnt it online on ST homepage?is this the right forum to ask this question?Thx

Posted on April 28, 2018 at 18:09Hallo, I am new with this micro controller.I got the dokument UM0834.Where can I find the sources of the Discovery project and the needed library?

Posted on May 05, 2018 at 01:12I'm currently working on an STM8L052C6 project, and am looking to set up some interrupts on Port C pins. Looking at the pin description in the datasheet http://www.st.com/resource/en/datasheet/stm8l052c6.pdf, it appears that Port C pins should be capable of being configured as external interrupts. However, looking at the interrupt table from the same document does not show any entry for Port C. However, it does contain entries associated with Port G and H, both of which do not exist on this particular package. So it appears there is an error in the datasheet.With this in mind, is configuring Port C pins as external interrupts possible on the STM8L052C6 chip? If so, what is the proper IRQ number to use?#interrupts #stm8l052c6