STM8 MCUs

It worked only one time. after that it is failing in downloading the data.

When I first saw the description for ST-Link STM8/STM32 v2 it noted "Programmer & Emulator". But other listings call it "Programmer & Debugger". I have a STM8L151 and would like to be able to load my firmware (via a S19 formatted file) into an emulator to perform various tests on it prior to loading it onto the device.Does such a thing exist?

Firstly I am noob in STM8 world :)I am trying to establish I2C connection between esp8266 wifi as master and STM8S003 micros as slave, so I am able to detect STM8S003 device id on esp wifi side but I do not know how to build send and receive API using these default driver to achieve data exchange betwwen esp wifi and STM8.

I've just started programing this little guy for the very first time and I have some troubles uploading a pretty simple blink program to the chip. It compiles with no errors or warnings. So, I don't know why it does not work. Can anybody help me to solve this, please? In the images below is possible to see the code and the messages given by the programmer tool. Thank you beforehand.

I'm writing an STM8 emulator. Maybe it will be useful to someone else as well. It's still early on in development, but it's working. The peripheral support is minimal right now. Only UART1, UART3, TIM2, ADC and GPIO (which isn't really a peripheral per se). And those supported are not all 100% complete.My main focus right now is filling out the range of supported peripherals, and cleaning up the CPU core code a bit. I'd also like to have a proper disassembler in the future that can spit the instructions back out into readable assembly, and the ability to step through code slowly while examining register and memory behavior.Here's the code as it stands now. It can load ELF files and run them, and UART can be redirected to stdio console, serial port or a TCP socket. (Server mode only for the TCP at the moment)

i need to calculate some log based contents using ST visual develop IDE and Cosmic compiler. but "log" is not recognized by compiler. any solution pleaseexample: my_reg=log(reg1);regards.

Hello Community,I'm struggeling with the GPIO activation of Pin PB0.My Setup is: µC: STM8AF6213PCA with TSSOP20 Pinout, STVD + Cosmic C CompilerIt is no problem to aktivate the Port C (PC4, PC5, PC6 and PC7). But port B seems to be dead.But the port registers say, that the PortB is configured to output (same as Port C).I'm afraid, that I have to "allow" the Port B somehow to act as a GPIO. Does anyone knows this problem?Thank you, Steffen

Using the library functions the micro freezes and enters a CLK assert, this is the code I use to configure the CLK: CLK_DeInit (); CLK_HSECmd (DISABLE); CLK_LSICmd (DISABLE); CLK_HSICmd (ENABLE); while (! CLK_GetFlagStatus (CLK_FLAG_HSIRDY)); CLK_ClockSwitchCmd (ENABLE); CLK_HSIPrescalerConfig (CLK_PRESCALER_HSIDIV1); CLK_SYSCLKConfig (CLK_PRESCALER_CPUDIV1); CLK_ClockSwitchConfig (CLK_SWITCHMODE_AUTO,            CLK_SOURCE_HSI,            DISABLE,            CLK_CURRENTCLOCKSTATE_ENABLE); CLK_PeripheralClockConfig (CLK_PERIPHERAL_SPI, DISABLE); CLK_PeripheralClockConfig (CLK_PERIPHERAL_I2C, DISABLE); CLK_PeripheralClockConfig (CLK_PERIP

Hello for a project I will be using Ethernet, CANBus and RS232. Now the maximum frequency for CANBUS is 1 Mbit per seconds, for RS-232 that is 20 k baud and for Ethernet I think it is again 1 Mbit per seconds. So with a MCU that has at least 2 MHz clock freq. that looks doable. But I have few questions about it.1) Would it be a best approach to use 1 MCU and handle all communications in there. Or to use at least 2 MCU's.2) Since RS232 is pretty slow compared to CAN or Ethernet. During an RS-232 call, I can get 500 datas from CAN network! Same for the ethernet. What would happen in this case? Would setting ethernet and CAN to higher priority solve this issue? ( But in this case rs-232 comm. could never get finished I believe.)What would be my best bet in this case? I need some guidance in here. Thanks beforehand.

hello,I want to use Flash Loader Demonstrator for complete programmed update of stm8l001j3 device.But Flash Loader Demonstrator tool unrecongnized device.Is there any other way to update the program through the serial port ?

I need to decode ASK/OOK signal, for this aim I need to know the period in microseconds between several edges. I decided to use TIM1 for this purpose, here is my code// Set fCPU = 16MHz CLK_CKDIVR = 0; CLK_PCKENR1 = 0xFF; CLK_PCKENR2 = 0;   uint16_t micros() { return (uint16_t) ((TIM1_CNTRH << 8) | TIM1_CNTRL); }   void tim1_init(void) { // 1MHz = 1uS TIM1_PSCRH = 0x00; TIM1_PSCRL = 0x10;   TIM1_IER = 0x00; // disable interrupts TIM1_CR1 = 0x01; }and to get signal I useISR_PORTD(handlerD) { state = PinRead(GD0_PORT, GD0_PIN); uint16_t m = micros(); if (state == HIGH) { lolen = abs(m - prevtime); } else { hilen = abs(m - prevtime); } prevtime = abs(m); if (state == HIGH) { if (flag == 0) { // the end of packet if (CheckValue(Pe, hilen) && CheckValue(Pe2, lolen)) // valid 1 { if (bcounter < 32) code1 = (code1 << 1) | 1; else if (bcounter < 64) code2 = (code2

I'm using Comparator 2 on the STM8L151G4 with DAC1 on the inverting input. When the DAC outputs 0V, the current draw during Halt mode is < 1 uA. If the DAC outputs around 0.5V before the program enters Halt mode, the current draw is 80 uA in Halt mode. Is there any way the DAC output voltage can be maintained during Halt mode and draw less current?

I am having an issue with the UART1 communication between two devices (Computer and a STM8S208 board).I implemented software in the computer that writes two bytes length of data to the STM8• the first byte that acts as an identifier;•the second byte was the data that I wanted to write at VLS memory,However, at the STM8, only the first byte was read and twice, For instance, I sent the identifier 0x04 and the data 0x90, but only the byte 0x04 was read and stored in the buffer as: (0x04 , 0x04 ).Now I am implementing it reading 1-byte lenght each time via a UART interruption, but I am afraid that it could let the firmware more prone to bugs, in case of the data, have the same value of the identifier byte - Some of my data are 2 bytes long + 1 byte for Identifier.I believe that the best solution is to send it as one byte for identifier plus two bytes for data, altogether.But how could I implement it or why only the fi

Hello guys. I have a general question actually I need suggestions. So I did not want to open a topic for it. I need to make a presentation about a box which will be in some armored vehicle. This box will be like the brain of the vehicle and will control all the sensor datas, GPS values etc that comes in it. This box needs to be safe for MIL-STD-810G 1275 and EMI-EMC. They want me to make some suggestions for them in the presentation (both for software and hardware development). I don't know what kind of suggestions I can give in the software side rather than "use a MCU that support Ethernet and CanBUS" (because they use that communication protocols in the vehicle). So I wanted to take suggestions about it. I need any suggestion that you guys can give. Thanks beforehand.

Hello community,after unsoldering the solderbridges of the STM8S-Disco-Board, I try to connect the SWIM to a STM8AF Chip. I read in the manueal, that this is not possible (only for STM8S-Family). But after trying it, I could flas Code on the µC and Debug it with the STVD. For example, a counter in my programm ist counting up :)But if I want to switch Timer1-Output-Pin from LOW to HIGH, nothing happens.Is ist possible,, that I can program the µC and it is running without errors, but the mapping of the GPIOs are not correctly done? Is there a influence of the SWIM-adapter even if I had chosen the STM8AF-Chip in STVD?Thank you all, Steffen

HelloI'm using an STM8L151F3U6TR. A lot of things are working fine.But the comparator 1 seems not to work.It seems not possible to write its registers.If I execute the following code with debugger, then "dummy" changes from 0xFF to 0x00.I would have expected it to be 0x20 at the end.According to the manual this bit is readable.(I know you shouldn't set registers like this, but it should work anyway.)void main(void){  volatile static unsigned char dummy = 0xFF;  COMP->CSR1 = 0x20; //set interupt enable bit  dummy = COMP->CSR1; //Dummy is always zero! Why?  while(1);}What could be the problem?Any ideas?RegardsErich

I am able to read my two ADC inputs individually when I implement the code shown in this example: http://embedded-lab.com/blog/starting-stm8-microcontrollers/13/However, the ADC values in the buffers do not seem to be getting updated when I try to get the ADC to work in multi-input mode as per the example here: http://embedded-lab.com/blog/continuing-stm8-microcontroller-expedition/2/I've looked at different locations in the ADC1_GetBufferValue() buffer, and none of them seem to be getting updated.Perhaps I have modified something incorrectly for my application?Here is my code, the specific device is the STM8S003F3.#include "STM8S.h"#i

I have been working on a battery powered application and am experiencing some strange behavior when the batteries are dying. The LED array is being driven by a PWM signal on PD4 through a FET. When the +4V power line goes down to 2.6xx V, all of the LEDs are turning on. The voltage measured at PD4 (Q1 gate) is measured as 0.003V, but I am seeing around 1.3xx V on the drain of Q1. I thought perhaps the pull-up resistors were driving the low battery led and the transistor, but I shouldn't be seeing 0.003 V on the gate of the transistor if that is the case and the FET should not be on. Anyone have any insight as to what is going on.

I'm trying to write an emulator for the STM8 MCU family. Most of the opcodes are implemented, but it's doing things I don't expect, and I think the problem lies in some of my addressing mode implementations. The following questions seem obvious, but I'm just trying to confirm.According to the STM8 programmer's manual PM0044, short indexed addressing modes with X/Y allow only a 00..1FE address range. So this means that only the low bytes of X/Y are used as the index, correct?Also, the no offset indexed addressing modes are said to have an 00..FF address range. So same deal? Only use the low bytes of the index registers X/Y?

helloits not that clear what the manual and data sheets say about the "configururable clock otput register.normaly i set port d as output with portd cr1 alsso setthen i set the ccoen bit in the clk_ccor registerthen i write 15 in clk_ccor registerand when i read the clock register is stvd then the result i have in clk_ccoir is 61. so ccobsy and ccordy are set, and ccoen also, but the ccosel is gonecan someone informe me please how to have the clokk pulses on cco?thanks

Hi,I'm using STM8S for UART half duplex communication (single wire). I'm using the standard library to set the UART up in 9600 baud rate, 8 data bit, even parity and 1 stop bit. I recieve data using interrupts. On the third byte, I get a parity error. If I do not use parity check, everything works correctly. But when I enable parity, the third byte gives a parity error. Attached is an image of the data I'm receiving (0x93 0x93 0x01 0xB1 .....). Any one has an idea why this may happen?

I just started to working on STM8L162. I worked on STM32 SO, I searched the tool like STM32cube MX for STM8 and I got it. STM8CubeMX does not support the code generation yet. So , is there any other tool for STM8? From where I can download the driver packages for STM8? Which IDE is best to work with STM8?

Developed an app using the S105C6 MPU on the Discovery board, all went Very Well.Had boards made for the product - can't communicate - getting 40201 can't access configuration database. Others have had this, but NO answer has been posted ! What is this database and how do I resolve this? To top that - I get the same trying the Discovery board that was working fine. We're leaving NXP for ST because of IDE costs, but if ST doesn't have a good answer, we're going elsewhere.

I code in absolute assembler (30+ yrs). I have an app that ran fine under STVD, then something broke in the toolchain that even a fresh install didn't fix, so I'm learning CXSTM8. At build, I'm getting a segment overlap error. Pretty sure it's not knowing Segment and Section usage. Can someone point me to some examples? Or point me to a better explanation of their usage? I'm not understanding the descriptions in the User Guide Thanks, <<<)))

I am using STM8AF5286 controller and CAN port for external communication. My application need to be in HALT mode to prevent battery consumption and wakeup only when any activity is detected on CAN port. The application works fine with wfi() function but it does not wakeup if I use halt().I am using STM8 standard peripheral library. CAN is configured as below:/* CAN RX pin interface */GPIO_DeInit(GPIOG);GPIO_Init(GPIOG, GPIO_PIN_1, GPIO_MODE_IN_PU_IT);/* CAN register init */ CAN_DeInit(); /* CAN init */ CAN_MasterCtrl=CAN_MasterCtrl_AllDisabled; CAN_Mode = CAN_Mode_Normal; CAN_SynJumpWidth = CAN_SynJumpWidth_1TimeQuantum; CAN_BitSeg1 = CAN_BitSeg1_8TimeQuantum; CAN_BitSeg2 = CAN_BitSeg2_7TimeQuantum; CAN_Prescaler = 4; //set to 250Kbps, set to 2 for 500Kbps status = CAN_Init(CAN_MasterCtrl, CAN_