STM8 MCUs

 I am Searching on your site STEVAL-IHM037V1, IR Transmitter and receiver BOARD and circuit, also i have a transmitter code using chip STM8L101F2P66.BUT i don"t have the code of receiver using IC STM8S003F3P6, I have to develop some kind of R&D product using same chip transmitter and receiver . so can u provide me the code (firmware) of receiver so that i can use your chip. Please provide a me a proper solution as much as u can.Because i need 1000 's of pcs (min)thanks

Hi everyone.I am having problem reading data on ADC pins in stm8s003k3. I have attached three NTC at Ain1/2/3(which I suppose is also known as a channel) according to the datasheet. Problem is that when I put different channels in my code it shows one reading on two displays while the third display shows a random value. Here is my code. Kindly someone guide me or a bit of a hint. Thanks void ADC_Init (unsigned char Channel){ CLK->PCKENR2 |= CLK_PCKENR2_ADC; ADC1->TDRL = Channel; ADC1->CR1 = ADC1_PRESSEL_FCPU_D18; ADC1->CR2 = ADC1_ALIGN_RIGHT; ADC1->CR1 |= ADC1_CR1_ADON;}unsigned int ADC_Read (unsigned char Channel){ unsigned int Result; ADC1->CSR = Channel; ADC1->CR1 |= ADC1_CR1_ADON; ADC1->CR1 |= ADC1_CR1_ADON; while (!(ADC1->CSR & ADC1_CSR_EOC)); Result = ADC1->DRL; Result |= ADC1->DRH << 8; r

In many aplications i am using simple template, where interrupt routines (for example UART receive) raise flags (volatile variables) and main() function polling these flags and processing these events (for example parsing incoming UART charaters). I would like to put MCU to sleep when there is nothing to do - when all flags are cleared. But i can not simply write:if(!flag1 && !flag2 ...){ go_to_sleep(); }because of potential race condition. Flag can be set during if statement evaluation and there is risk, that MCU will go sleep with raised some flag. Is there any mechanism how to sleep STM8S (and possibly STM8L) safe - only if flags are cleared ?just for interest: STM32 handles that problem by calling "send event" instruction (at place where flag is raised), which prevents falling asleep.AVR have separated bit for "sleep enable" and this bit can be cleared in IRQ routine, where flag is raised and also prevent MCU fr

Hello, I have a question about STMA-Discovery Boards. I want to use just one board which is STM8AL one, without connecting it with STM8AF, and i want to make LIN communication using Peak Lin (which requires an exterior 12V power supply). Normally to debug the stm8 board it is done through the USB power cable (5V) but if I want to debug and connect Peak LIN at the same time the board will be connected to 5V (from the debug cable) and to 12V (from the exterior power source) at the same time !My question here is this connection correct, I am afraid to burn the board or the PC.En the datasheet i understand that the board already generates 12V, but i am wondering how to connect the Peak lin (because i think they have to be connected to the same ground).

Hi there,On a battery-powered board using the STM8l050J3, in order to reduce at the minimum the power consumption, in Active Halt mode and using RTC wakeup, (at a few tens or at most hundreds of uA) as indicated, I want to disable Vrefint.To do so, during initialization, I use this sequence of commands:---PWR_DeInit();PWR_PVDCmd(DISABLE);PWR_UltraLowPowerCmd(ENABLE); PWR_FastWakeUpCmd(ENABLE);VREFINT_STATUS = PWR_GetFlagStatus(PWR_FLAG_VREFINTF);--- ... but the VREFINT_STATUS, used only for a verify, return that Vrefint is always SET (value = 1)Thanks a lot for any suggestion.Sisto

I made one bootloader then jumps to the application code, I set one GPIO pin as low before jump instruction then set GPIO pin as high at the beginning of the application code. 1, However, it takes so long time when measured by oscilloscope about 325ms.and the bootloader runs well, I suspect what does the MCU do during that time why it takes some time?2, another question is that during running in bootloader, I initialize the clock, gpio, after the code jumpes into the application, should I re-initialize the clock again, what will happen if I do not initialize?Thanks

I am using STM8 and since vector table is in flash memory I need to write to flash memory in order to create and use vector table. Since addresses of vector tables are fixed my code writes same values to same memory address of the flash on every startup. But there is no erase in the code so I thought after the first write process it won't do anything anymore. My question is would it reduce the life of flash if I write to same flash memory address on every startup/reset without erasing?

Dear all,I have just put the X-NUCLEO-53L1A1 kit into operation together with Arduino UNO and everything works perfectly, using the "X_NUCLEO_53L1A1_HelloWorld" application package.Then I mounted one of the same two VL53L1X-SATEL sensors by interfacing it with the STM8S MCU, using the "VL53L1X ULD API" application package, but here I still have a basic problem that I can't explain.Before sending the FW used, based on the following flow:I would like to briefly describe the defect found in the "VL53L1X_GetInterruptPolarity" function, called within "VL53L1X_CheckForDataReady", in turn called within "VL53L1X_SensorInit".The problem is that in the following function:

I am having an issue with the I2C communication between the MCU STM8208C6 and the Ambient Light Sensor APDS 9306-065.Before any setting is set up during the debugging, the I2C register I2C_SR3 in the field BUSY is 1.• I checked if there was any short circuit in the SCL and SDA pins, but none was found.• In the oscilloscope both SDA and SCL pings are high (+3V3) before the start condition.• I am making use of STM8S/A Standard peripheral library and IAR IDE.The code for the I2C setup is the following:void I2C_Config(void){ I2C_DeInit();   I2C_Init( (20000),       (0x00000000),       I2C_DUTYCYCLE_16_9,       I2C_ACK_NONE,       I2C_ADDMODE_7BIT,      (CLK_GetClockFreq() / 1000000)); I2C_C

Hello I am using STM8L052 and in my program I am writing my vectorTable to my flash memory for every power on, but I want to make it only once so once the flash is written with vectorTable I will not write to flash again. There is how I write to flash:FLASH_Unlock( FLASH_MemType_Program ); /* Note that all interrupt handlers are in sector 1 due to the location of the application being forced to start at 0x10000! */ offset = OFFSVECTOR( VECTOR_TIM2_USART2_TX ); vector = SECTOR1_BASE | (U32) TIM2_IRQHandler; flashWriteProgram( offset, address, 3 ); offset = OFFSVECTOR( VECTOR_IIC_SPI2 ); vector = SECTOR1_BASE | (U32) I2C1_IRQHandler; flashWriteProgram( offset, address, 3 ); offset = OFFSVECTOR( VECTOR_TIM5_CAPCOM_USART1_RX ); vector = SECTOR1_BASE | (U32) UART_IRQHandler; flashWriteProgram( offset, address, 3 ); offset = OFFSVECTOR( VECTOR_TIM3_USART3_TX ); vector = SECTOR1_BASE | (U32) modbus_timerIRQHandler; flashWriteProgram( offset, address, 3 );

Hi,I am experiencing a serious problem with STM8L050J3.Due to an unused pin configuration of port A (PA1..PA7) then excluding PA0 used as SWIM, in order to check for any difference in current consumption, I have configured Port A with the following command:GPIO_Init(GPIOA, GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7, GPIO_Mode_Out_PP_Low_Slow);As a result, the firmware uploaded now does not run, and it is no longer possible to access it with ST-LINK V2, neither for debugging nor for programming.Since the RESET pin is missing on this micro, there is no way to reset this situation and recover the functionality of the micro, which is otherwise no longer usable.Any suggestions for solving this?Thank you for your attention.Translated with www.DeepL.com/Translator (free vers

I need 2 PWM signals each with different frequency and duty cycle. So I'm using TIM1 and TIM2 for this. But these PWMs are not synchronised. Please help me on this.

Hello, I would like help to have configurating the ADC peripheric to use it in continuos mode with three channels of the micro stm8s005c6, could you hand me an example made with the FWL from ST? Im using it right now with no success.I have being reading the Reference Manual and all the guides to act directly with the registers but if I can save time using the library that could be vey helpfull.This is my actual configuration on ADC channel 3:#include "stm8s.h" #include "hal_adc.h" #include "stm8s_adc1.h"    /**   * @brief ADC1 configuration   * @param None   * @retval None   */   void adc_config(void){ ADC1_DeInit(); ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_3, ADC1_PRESSEL_FCPU_D18, ADC1_EXTTRIG_GPIO, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL3, DISABLE);   ADC1_AWDChannelConfig(ADC1_CHANNEL_3, ENABLE); ADC1_SetHighThreshold(50); ADC1_SetLowThreshold(0); ADC1_ITConf

static bool isEOBtnPressed = FALSE;static bool isECBtnPressed = FALSE;static void monitor_d_input_button(void); /*PB1 pin as input pin pull-up mode*/static void monitor_o_input_button(void);/*PB2 pin as inputpin pu;;-up mode*/static void monitor_c_input_button(void);/*PB3 pin as inputpin pu;;-up mode*/static void monitor_e_o_input_button(void);/*PB4 pin as inputpin pu;;-up mode*/static void monitor_e_c_input_button(void);/*PB5 pin as inputpin pu;;-up mode*/static void monitor_d_input_button(void){ static bool isDefON = FALSE; volatile bool btnState = !GPIO_ReadInputPin(GPIOB, (GPIO_Pin_TypeDef)GPIO_PIN_1); if(btnState != isDefON) { if(!isDefON) { def_timer_tick = 0; isDefON = FALSE; }/*btnpressed and defrost is already on and time is less than 10min*/ else if(btnState && isDefON &

It has been weakly suggested in other threads, but I would appreciate a firm confirmation. Does anybody have first-hand experience doing this?Is anything else required? For example connecting the grounds of the SWIM and JTAG? (Hard to guess the correct way to do it without seeing the schematic of the ST-LINK /V2!)

HiI plan to program my MCU using a Tagconnect cable. I haven't bought the Tagconnect cable yet, nor the st-link v2, and I would like some recommendations.Is anybody using this setup? What are your thoughts?It also seems there are different versions of the st-link v2, but with the same name: I prefer the small thumb-drive like, if they are functionally equivalent.

On STM8 controller the 4-pin SWIM interface has a power pin (pin#1) that has been indicated to sense the target voltage. Can this pin be repurposed some way to drive the target board ? So SWIM interface provides output power so the target circuitry does not need separate power source for low power designs say (~100mW). The SWIM itself powers the target while debugging if needed.

Hi there,I have made changes to the firmware and , via ST-Link V2, I would like to reprogram an STM8L050J3, which I had previously programmed with the Active Halt function enabled, but SVP does not allow it and responds with this message as the attached screen snapshot. Don't tell me this is not possible otherwise I really have to admit that this micro has little flexibility of use.Thanks for any your support,Sisto

I am trying to get a pulse out of TIM2 in compare mode but I see no output. Here is my snippet of code:#include "iostm8l101f3.h" void main( void ) { CLK_CKDIVR = 0x01; // 8MHz PA_CR1 = 0xFF; // all pullups PB_DDR = 0x01; // 0000 0001 = PB0 (TIM2 CCR1) output, all other input PB_CR1 = 0xFF; // 1111 1111 = Pullups: PB1-PB7, push-pull: PB0 PC_ODR = 0x01; // PC0 high, PC1 low PC_DDR = 0x03; // PC0 and PC1 output, rest are input PC_CR1 = 0xFC; // Pullups on inputs PC2 - PC7 PD_CR1 = 0xFF; // Pullup on PD0-PD7   CLK_PCKENR |= 0x1; // enable TIM2 clock TIM2_ARRH = 0x07; // period high byte TIM2_ARRL = 0xD0; // period low byte TIM2_CCR1H = 0x03; // 50% duty TIM2_CCR1L = 0xE8; TIM2_CCMR1_COMPARE_OC1M = 6; // pwm 1 TIM2_BKR_MOE = 1; // Main output enable TIM2_CCER1_CC1E = 1; // enable output   TIM2_CR1_CEN = 1; // enable counter TIM2_EGR |= 1; // Reset timer   while(1) { // loop forever } }When I run this in the

Hello,I am developing a project with STM8L050J3 microcontroller using Evaluation Board STM8-S08-DISCO and STVD version 4.3.12.I need to calibrate the internal HSI oscillator, but for some reason that I have not been able to identify, although I compile without any error when I run the program, at the CLK_AdjustHSICalibrationValue(HSI_Calibration_Value); instruction I get the error: swim error (30007): swim communication error and then : "Error: gdi-error [40127]: flash memory not accessible while core isrunning" (see attached screenshots).Is this a limitation of the debugger, or do I make some error in using the calibration instruction?Thank you for any response you may haveSisto

I have this little project for the STM8L101F3 that just writes an arbitrary value to TIM2_CCR1H and TIM2_CCR1L and then tries to start the timer but I get nothing from the timer output.If I run the project with a debugger and inspect the contents of the registers, I find them unchanged. I tried this with IAR Embedded Workbench under Windows 10 and with sdcc/openocd/stm8-gdb under Ubuntu 20.04LTS and I see the same behaviour. I am using one of those generic STLINK-V2 dongles.I have another project that just toggles an IO and it works fine. I am just having trouble with TIM2.So just yesterday I received a brand new STM8L-Discovery. I then downloaded en-stsw-stm8008.zip from st.com and unzipped it.When I hook up the discovery board to my PC and run the IAR* project "Discovery", and while the debugger is stopped at main(), I open up a view registers window and bring up TIM2. When I try to modify any of the registers, they just stay

$ sdcc -mstm8 --out-fmt-elf -o build/firmware.elf build/{main.rel,uart3.rel,misc.rel}?ASlink-Warning-Undefined Global 'null' referenced by module 'main'What is meaning?Module "main.rel" was compile without errors/warning.stm8-gdb has segfault when i load this elf :(

Hello, there is posibility we mixed STM8L101F3 vs F3U. There is marking L1S3 on the top, but I can't find any information/table of these markings. Is is possible to have it ?

Hello, I am using the Stm8s003f3p6 processor. I want to create 1 microsecond time on processor. I tried TIM1 and TIM4 peripherals for this. I gave the values of 2, 4 and 8 respectively as Presecaler values. Again, I gave 7, 3 and 1 values as periods, respectively. But my timer enters the interrupt in 20 microseconds. How can I get the 1 microsecond time?Thanks for your answers

The right side of the source code displayed in ST Visual Develop is displayed in red.Does anyone know how to solve this?Also, is there any problem if it is displayed in red?I would appreciate it if anyone could tell me.