STM8 MCUs

#include <iostm8l.h>#include <stdio.h>#include <string.h>#include <stdlib.h>#include <stdint.h>#include <math.h>#include "defs.h"static int click = 0;void delay(unsigned long dd){  unsigned long i;  for (i=0;i<dd;i++) nop(); }void RTC(void){ unsigned long j = 0; PE_ODR |= 0x80; // led indication for reset  if( click == 2) // reset module { click = 0;  PC_ODR &= ~(1<<3); //pc3 in place of push button - turn it off here  for(j = 0;j<20;j++)  {   delay(_250ms_); // 4.3 seconds in real  } } if(click == 1) // on module { click++; PC_ODR &= ~(1<<3); //turn it off for(j = 0;j<8;j++)  { delay(_2

HiI am using STM8S001J3 controlleron my project and I'm have some problem about it,6 pin GPIOB 4 It doesn't work.I don't know how to solve it.Please help me..//example code GPIO_DeInit(GPIOB);GPIO_Init(GOIOB,GPIO_PIN_ALL,GPIO_MODE_OUT_OD_HIZ_LOW);while(1){    GPIO_Write_High(PORTB,PINB4 );     Delay(10000)// 1 sec delay   GPIO_Write_Low(PORTB,PINB4 );     Delay(10000)// 1 sec delay}I am using IAR for program development. Thanks in advance.

The host tries to write the STM8S001J3 flash memory and then read it through the SWIM interface. Writing a block of 64 bytes. happens correctly. However, reading steadily only works on 1 byte. When trying to read more bytes with one command, the result depends on the contents of the memory being read. For example, if the first byte contains 0x01, then transferring the ACK from the host to the target stops the further data flow. If the ACK is not transmitted from the host, then the next byte is transmitted. And so on. In which cases, to transfer the ASK, and in which it is not necessary to do this, is not clear. Timing diagrams of the SWIM line were formed as correct as possible.in photo 1 - a stop after reading the first byte 0x01 when trying to read 64 bytes. ACK is formed by the host.in photo 2 - a stop after reading the first byte 0x01 and the second byte 0xFE when trying to read 64 bytes. ACK is NOT configured by the host.

I'm using theﾠSTEVAL-ISB044V1 evaluation board for the wireless charging test. The evaluation board is based on STWBC-EP and can be programmed with ST-LINK V2. STM8AF6166 is the core of it, so I post here. I tried to program the board, and there's always a connection problem. It looks like the following:I've tried a USB 2.0 port and USB 3.0port, and I can make sure I've installed all the required tools. Would you please tell me why there's a communicate error? And how to force the NRST Reset pin to"low"?​On the user manual of the board, the connection looks like this:

File KEYPAD.H/* Exported types ------------------------------------------------------------*/typedef enum { CORRECTTIME = 0, FEEDINGTIME, COUNTERTOZERO, PRESSTOTEST, MOTORDEC, MOTORINC, DELAYDEC, DELAYINC, HOURSETDEC, HOURSETINC, MINSETDEC, MINSETINC, NOKEY } _keyNames;File KEYPAD.C/* Includes ------------------------------------------------------------------*/ #include "keypad.h"_keyNames getKey(void) { _keyNames theKey; theKey = keyData.userKey; return(theKey); }From MAIN.C/* Includes ------------------------------------------------------------------*/ #include "main.h" #include "keypad.h"_keyNames myKey;   myKey = getKey();When I set a break point immediately after the getKey() call, the variable myKey has the correct value but I CAN NOT modify it in the watch window. When I

I have started writing some STM8 code in assembler and happened upon a memory assignment issue I can't explain.Globally I have segment 'ram0'Test_Word ds.w in code: ldw X, #$48 ldw Test_Word , X The two bytes of memory at location Test_Word is 00 $48 This appears to be Big Endian memory assignmentif in code ... ld A, #5 ld Test_Word , A The two bytes of memory at location Test_Word is 05 $48 To me this is very strange.Can someone explain why the instructions ldw X, #$48ldw Test_Word , XDid not populate memory as $48 00Thanks in advance for any insight.Joe

Hello.I have accidentally activated the ROP protection on some demo boards using STLUX385A.Normally I use ST Visual Programmer to restore the configuration bytes, but the STLUX385A is not currently supported.I own a ST-Link V2 but I can't find any flashing software supporting both, STLUX385A and ST-Link V2.Bootloader can't be used when ROP is enabled, so cab be used to flash neither.Do I need to buy an expensive programmer to recovery the demo boards? (segger for STM8 for example).Is there any software (windows or linux) that can be used to restore the option bytes using an official programmer?Regards

I'm working on STM8s105c6 . Everything goes fine but I'm not able to debug it . Earlier it said Swim error can't access database . Then i reinstalled StToolset file , Now it shows SWIM Error 30004 Comm Time out . I have tried everything . The code gets uploaded using STVP but I'm not able to debug using STVD

I have worked on STM32 controllers and I have used CubeMX tool for code generation of any module like UART, LIn etcc....Is there any tool for the same STM8 controller like STM8AF52A8T? CubeMX for STM8 doesn't have the support for code generation.

Hi ! This question has already be posted but i don't find a solution of my problem.I have an LCD screen (MC20805A6W-BMLW-V2) with I2C communication and I try to communicate with my controller via I2C (STMS005K6).First I initialize my port :GPIO_DeInit(GPIOB); GPIO_Init(GPIOB, GPIO_PIN_4, GPIO_MODE_OUT_OD_HIZ_FAST); GPIO_Init(GPIOB, GPIO_PIN_5, GPIO_MODE_OUT_OD_HIZ_FAST);Then my Clock :CLK_DeInit(); CLK_HSECmd(DISABLE); // Enable or not the external oscillator CLK_LSICmd(DISABLE); // Enables or disables the Internal Low Speed oscillator (LSI). CLK_HSICmd(ENABLE); // Enables or disables the Internal High Speed oscillator (HSI). while(CLK_GetFlagStatus(CLK_FLAG_HSIRDY) == FALSE); // Checks whether the specified CLK flag is set or not.   CLK_ClockSwitchCmd(ENABLE); // Starts or Stops manually the clock switch execution. CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1); // Configures the HSI cloc

I am using stm8l - discovery board and I am curious about the functionality of trap in the micro controller. My program stops instead of running continously in the while loop, Is the functionality of trap interrupt that if it occurs, it does not execute (similar to reset)?#include <iostm8l.h>#include <stdio.h>#include <stdint.h>void Cus_delay(uint32_t ntime) { while(ntime!=0) { ntime--; } } main(){CLK_DIVR = 0x00; // Set the frequency to 16MhzPC_DDR = 0x80; // direction output for ledPC_CR1 = 0x80; // fast push pull modeint a = 10;while(1){ Cus_delay(400000); Cus_delay(400000); PC_ODR ^= 0x80; a = a/0;}}

How to know memory consumption of embedded c program in ST visual develop. I have write code for STM8S and compile it but i didn't get any information about the memory consumption. I mean How much memory space reserved by the program.

I am new to STM8 and STVD. Above is shown when I try to create my first project. What's the problem?thanks.

I want to use the SPI peripheral on STM8L050J3 to generate bit patterns. I do not need SCK for this, and would like to use the SCK pin for GPIO. Is this possible?

Hi,The UM0470 says:DM control register 2 (DM_CR2)FV_RAM Remap vector table in RAMThis bit is set or cleared by software. It remaps the interrupt vector table to a RAMlocation instead of program memory (usually 8000h).0: Vector table is in Program Memory area (8000h)1: Vector table is in RAM memory area (address depends on the product).---Could you pelase let me know where I can find the RAM address mentioned above?In other words what is the RAM address the vector table can be remapped to?

can i get generated code from stm cube8 ?

Hi,For me to set the SWIM pin to (Input Float NO), I need to set all ports attached to pin 1, as follows: * NAME |DDR |CR1 |CR2 |ODR | Operation         |FUNC * PA.0 - 0  - 0  - 0  - 0  - Input Float NI      - SWIM * PA.2 - 0  - 0  - 0  - 0  - Input Float NI      - SWIM * PC.6 - 0  - 0  - 0  - 0  - Input Float NI      - SWIMOr I can just set one of the ports attached to pin 1, any of them, like: * NAME |DDR |CR1 |CR2 |ODR | Operation         |FUNC * PA.0 - 0  - 0  - 0  - 0  - Input Float NI      - SWIMWhat is the way to configure a pin of this microcontroller? Do I have

Hi,I am initializing studies with the STM8L050J3 using IAR.I made a development board and connected the in-circuit circuit as shown in the attached figure.Are there any other in-circuit pins that need to connect STM8L050J3 to ST-Link / v2?.

#include <iostm8l.h>#include <stdio.h>#include <string.h>#include <stdlib.h>#include "defs.h"unsigned int count = 0;@svlreg @interrupt void TIM1(void){ count += 1; TIM1_SR1 &= ~(0x01);}main(){ CLK_DIVR = 0x00; // Set the frequency to 16Mhz CLK_PCKENR2 = 0x02; // clock for timer1 PC_DDR = 0x80; // direction output for led PC_CR1 = 0x80; // fast push pull mode PE_DDR = 0x80; // direction output for led PE_CR1 = 0x80; // fast push pull mode TIM1_PSCRH = 0x3e; TIM1_PSCRL = 0x80; TIM1_ARRH = 0x3e;  TIM1_ARRL = 0x80; TIM1_CR1 = 0x81; TIM1_IER = 0x01;  _asm("rim\n"); while(1) { if (count == 1000) { PE_ODR ^= 0x80; count = 0; } }}

In a project I'm working on, I am using the internal EEPROM of the STM8L151.I do not initialize the variables (of course), but the compiler automatically set them all to 0. This is a bit of a problem because my code looks for 0xFF to see whether or not the variables have been previously written. And with 0 being a valid value for most of them, this distinction cannot be made.Now, I realise that in production this is no big deal, because I can simply just not program the EEPROM, but in debugging it is a right royal pain in the neck.I have gone through the Cosmic documentation, but couldn't find anything.So, does anyone have a solution?Best regards,Rob

I downloaded cosmic c compiler for stm8 and registered for license but I haven't received any license and it's been 2 days 

void main(void) { float temperature = 0; const float Rp=10000.0; //10K const float T2 = (273.15+25.0); //T2 298.15 const float Bx = 3380.0; //B const float Ka = 273.15; float Rt = 0; //double d_num = 0; float ln_value = 0; int tmp_int1 = 0; int tmp_int2 = 0; float tmp_frac = 0; int record_cnt = 0; // record counter //uint16_t read_cnt = 2; //short int rd_data = 0; uint16_t k_addr = 0; //write to eeprom temperature CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_8); //CLK_GetClockFreq(void) //GPIO_Init(GPIOA, GPIO_Pin_2, GPIO_Mode_Out_PP_Low_Slow); // for test //TIM1_Config(); //LCD_Cmd(DISABLE); //CLK_PeripheralClockConfig(CLK_Peripheral_LCD, DISABLE); //RTC_Config(); //ADC1_setup(); //PE7   while(1) { //RTC_SetWakeUpCounter(SAMPLE_TIME * 60); //RTC_WakeUpCmd(ENABLE); //TIM1_Cmd(DISABLE); //TIM1_SetCounter(0); //sEE_DeInit(); //printf(VERSION); //PWR_UltraLowPowerCmd(ENABLE); halt

void main(void) { float temperature = 0; const float Rp=10000.0; //10K const float T2 = (273.15+25.0); //T2 298.15 const float Bx = 3380.0; //B const float Ka = 273.15; float Rt = 0; //double d_num = 0; float ln_value = 0; int tmp_int1 = 0; int tmp_int2 = 0; float tmp_frac = 0; int record_cnt = 0; // record counter //uint16_t read_cnt = 2; //short int rd_data = 0; uint16_t k_addr = 0; //write to eeprom temperature CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_8); //CLK_GetClockFreq(void) //GPIO_Init(GPIOA, GPIO_Pin_2, GPIO_Mode_Out_PP_Low_Slow); // for test //TIM1_Config(); LCD_Cmd(DISABLE); CLK_PeripheralClockConfig(CLK_Peripheral_LCD, DISABLE); RTC_Config(); //ADC1_setup(); //PE7   while(1) { RTC_SetWakeUpCounter(SAMPLE_TIME * 60); RTC_WakeUpCmd(ENABLE); LCD_Cmd(DISABLE); CLK_PeripheralClockConfig(CLK_Peripheral_LCD, DISABLE); //TIM1_Cmd(DISABLE); //TIM1_SetCounter(0); //sEE_DeInit();

Hi All,STM8S001J3M3TR is used in our product. From the spec of this MCU, it said that it only consume around 4mA in running mode. So, I chose this IC in our project. After I get this IC and check it. When no IO operation is performed, this MCU consume around 7 mA. After IO operation is running such as check the duty of PWM input signal, the current consumed suddenly jump to 16mA. ​I find that the IO can be configured as OD - open drain, PP- Push pull, True open drain mode etc. Which IO configuration consume lowest MCU current. What I should do to reduce the current consumed by the MCU. This MCU is used to detect the duty of the input signal, then output the PWM to control the brightness of LED and the speed of motor. RegardsBarry Ng

hi,       I am using ST8l101F3P6 microcontroller.I have used ST Visual develop with Cosmic compiler.I Programmed and compiled successfully.but I can not Program the controller with ST visual programmer..when I try to program it asks to check the connections even though connections are made it correctly .if I choose Tools > Programmer in STVD,IDE is automatically closed.kindly share with solution.