STM8 MCUs

Posted on September 26, 2017 at 23:49Hello all!I'm using stvd and Cosmic (free) C compiler and I'm having issues with a simple statement. I'm using sprintf to conver two uint8_t to string but it always do it wrong. uint8_t u8Hours = 22, u8Minutes = 31;uint8_t u8DisplayBuffer[6];sprintf(u8DisplayBuffer, ''%.2u%.2u'', u8Hours, u8Minutes );the result is an array with ''5663'' ♯♯♯I have tried everything on my mind but I can't figure it out what is happening, do you have some idea what can be wrong?Thanks in advanced,Best regards, Mauro.#sprintf #stm8 #cosmic

Posted on September 14, 2017 at 00:34Dear experts,Can anybody advice how to break into ST8 that started running without debugger connected?In the Develop IDE I see only one option to start debugging, and it updates the program memory on the target. The target, I guess, will then reset/restart. How to avoid the restart?#debugging

Posted on August 21, 2017 at 13:23Hello. Help identify the item.

Posted on September 23, 2017 at 13:40 .  does anyone know the function to stop and reset the timer fucntion , because when TIM 2 CH* is running , it stops the GPIO #stm8s003f3

Posted on September 23, 2017 at 13:40 .  does anyone know the function to stop and reset the timer fucntion , because when TIM 2 CH* is running , it stops the GPIO 

Posted on September 21, 2017 at 15:05\ Trying to trim HSI I get 3 identical lowest frequencies verified on scope\ eForth on STM8S103F running MINDEV\ https://github.com/TG9541/stm8ef\ http://forum.hobbycomponents.com/viewtopic.php?f=87&t=2180\  my contrib under user barewires\ initTIM1 and content from previous page 1\ 1st try trim freq and confirm register readback at 4 kHz\ FILENVM: CLK_HSITRIMR $50CC ;: f3 3 CLK_HSITRIMR C! CLK_HSITRIMR C@ . ; \ 3.999 lowest freq ?: f2 2 CLK_HSITRIMR C! CLK_HSITRIMR C@ . ; \ 3.999 ?: f1 1 CLK_HSITRIMR C! CLK_HSITRIMR C@ . ; \ 3.999 ?: f0 0 CLK_HSITRIMR C! CLK_HSITRI

Posted on September 15, 2017 at 11:06Does Anyone worked on STM8S003F3P6  and Developed FOC Algorithm ? I need FOC algorithm to be developed in this Micro . Can anyone help me out?

Posted on September 11, 2017 at 19:10Dear experts,I am totally new to STM8, but got a task to complete. Please be kind and explain in simple layman terms...I have a project in ST Visual Develop, made by someone else. It has two parts: a bootloader (which I was told not to touch for now,  it is already flashed in the device) and the 'main' firmware.The build is successful. But when I try to start debugger, it pops up the following:ST Visual DevelopGDI Error: For better debugging performance, the user bootcode size must be reduced. You need to change the UBC optionSo, the question is, what is the UBC option? Where it can be changed? Does it mean that I need to do something with the bootloader project?The microcontroller model is STM8L101G3U with Cosmic compiler.The debugger device is a white USB dongle with ST logo on it.Any ideas?Thanks in advance,ddbug

Posted on May 26, 2015 at 13:55Hi, I have problem with ADC1 conversions on STM8S-Discovery. I have configured the analogic inputs following: PB4 - AN4 PB5 - AN5 PB6 - AN6 unsigned char ADC_Config_INT ( void ) {          GPIO_Init(ADC_PORT,ADC_15V_PIN, GPIO_MODE_IN_FL_NO_IT);     GPIO_Init(ADC_PORT,ADC_CURR_PIN, GPIO_MODE_IN_FL_NO_IT);     GPIO_Init(ADC_PORT,ADC_5V_PIN, GPIO_MODE_IN_FL_NO_IT);       /* De-Init ADC1 peripheral */   ADC1_DeInit();        /* Enable EOC interrupt */   ADC1_ITConfig(ADC1_IT_EOCIE, ENABLE);        /* Enable conversion data buffering */   ADC1_DataBufferCmd(ENABLE);        /* Enable scan mode conversion */

Posted on September 08, 2017 at 10:55When the destination memory block is locate in zero page which the address is often rang from 0x0 to 0xff. For instance, if a destination memory start address is 0x0, the memory() will copy the contents to address from 0x100. The memory() disassembly instructions like:      LDW X, &sharpLengthloop: LD  A, (scr + X)      LD (dst + X), A      DECW X      JRNE loop      RETThe value of 'scr' and 'dst' is the address before 1 of start address of memory block. e.g. If the start address of 'destination parameter' of memcpy() is 0x80, then the 'dst' should be 0x7f, and if the start address of it is 0x0, the 'dst' will be 0xff, then the contents will copy to the memor

Posted on September 11, 2017 at 15:06 I'm trying to get I2C to work, but nothing happens on either SDA nor SCL. I've connected the STM8S001J3 like so: Pin 5 SDA Pin 6 SCL (There are pull-ups on both of the lines) 1. I initialize the clocks: CLK_DeInit(); CLK_HSECmd(DISABLE); CLK_LSICmd(DISABLE); CLK_HSICmd(ENABLE); while(CLK_GetFlagStatus(CLK_FLAG_HSIRDY) == FALSE); CLK_ClockSwitchCmd(ENABLE); CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV8); CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV2); CLK_ClockSwitchConfig(CLK_SWITCHMODE_AUTO, CLK_SOURCE_HSI, DISABLE, CLK_CURRENTCLOCKSTATE_ENABLE); CLK_PeripheralClockConfig(CLK_PERIPHERAL_SPI, DISABLE); CLK_PeripheralClockConfig(CLK_PERIPHERAL_I2C, ENABLE); CLK_PeripheralClockConfig(CLK_PERIPHERAL_ADC, DISABLE); CLK_PeripheralClockConfig(CLK_PERIPHERAL_AWU, DISABLE); CLK_PeripheralClockConfig(CLK_PERIPHERAL_UART1, DISABLE); CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER1, DISABL

Posted on September 11, 2017 at 09:26 I have used to export Makefile with STVD. After adding the following post build step: $(WorkspacePath)\tools\build_merged_image.bat�? the build fails because the WorkspacePath variable is not exported in the generated Makefile. #stvd #bug

Posted on August 31, 2017 at 09:46Hi guys, may some expert please help me? I am new to stm8l. I am currently using the chip stm8l151k4t6. I have connected battery voltage to pin D7, purpose of it is that i wanna monitor the status of the battery while the device is ON. However, my Lcd display keep giving me same value(4095). Where did my code goes wrong ? below are my codes. ADC_DeInit(ADC1);  ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_4Cycles); ADC_SchmittTriggerConfig(ADC1, ADC_Channel_7, DISABLE); ADC_ChannelCmd(ADC1, ADC_Channel_7, ENABLE); ADC_Init(ADC1, ADC_ConversionMode_Continuous, ADC_Resolution_12Bit, ADC_Prescaler_1);  ADC_Cmd(ADC1, ENABLE);  ADC_ExternalTrigConfig(ADC1, ADC_ExtEventSelection_None, ADC_ExtTRGSensitivity_All); ADC_SoftwareStartConv(ADC1);  while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));  battery = AD

Posted on September 05, 2017 at 22:17I2C peripheral of STM8S005C6 stop event interrupt not triggered:Using an external device (verified to be working), I generate an I2C signal (100KHz) to communicate withSTM8S005C6program as aslavereceiver with the7-bit address of 0x24.I2C interrupt service routine is triggered by an incoming I2C signal. Address match and data receive events are detected. However, stop event (I2C_EVENT_SLAVE_STOP_DETECTED) is not detected.  Through a digital logic analyzer, I see that each byte received has been acknowledged. And, stop condition is present.

Posted on August 29, 2017 at 16:39*******************************I2C peripheral of STM8S005C6 not working******************************************I2C peripheral of STM8S005C6 does not jump to interrupt service routine:                  INTERRUPT_HANDLER(I2C_IRQHandler, 19)and busy flag is always set. Using an external device (verified to be working), I generate an I2C signal (100KHz) to communicate with STM8S005C6 program as a slave receiver with the 7-bit address of 0x24.  I have read out all the I2C registers to ensure

Posted on September 01, 2017 at 20:30Hello all,I am using STM8S003K3 for my appplication with STVD IDE and Cosmic compiler and using Touch Library for my application.I have added touch library in project and configure it as to work with STM8S003K3.I have my own designed hardware as below. -- Soldered STM8S003K3 in PCB. -- connected Vcap. -- 1M reg. from LOADREF. pin to each Touch pin. -- 10 k reg. in between controller pin and solder mask. -- Touch pad is designed with single layer bare PCB masked in round shapes(where i have soldered wire from 10k reg.) for individual key and on opposite side there is a paper marked with no.s.I am using TIM2 as a TIMAQ and TIM4 as generic timer.I have configured PE5 pin as a LOADREF. pin and rest as touch pin.After succcessfully build when i debug and check if any of key pressed, i am unable to get any of key pressed.There is no voltage on

Posted on September 30, 2015 at 05:06Dear AllI have a STM8S Discovery board. I want to config PD4 with Beep function./*Initialize PD4 for beep signal */GPIO_Init(GPIOD, GPIO_PIN_4, GPIO_MODE_OUT_PP_HIGH_FAST);BEEP_Init(BEEP_FREQUENCY_1KHZ);BEEP_Cmd(ENABLE); When I check signal of PD4 but don't have output frequency with 1Khz.Please help me.Thanks

Posted on August 28, 2017 at 10:24Good afternoon~everybodyI use STM8S103 to be the Slave device of SPI. However, I don’t know why all the interrupt of STM8 received is 0*1 instead of the right data? This is the http://www.kynix.com/uploadfiles/pdf8798/STM8S103F2P3.pdf and the code is as following:[code]void spi_slave_init(){    //NSS    GPIOA->DDR &= ~SPI_SSEL_PIN; //input pattern    GPIOA->CR1 &= ~SPI_SSEL_PIN; //Floated input    GPIOA->ODR &= (uint8_t)~SPI_SSEL_PIN; //write low    GPIOC->DDR |= SPI_MISO_PIN; //output pattern  &n

Posted on August 22, 2017 at 09:15I use STM8L152R8..I test flash programming... But, now some problem exists...Byte programming and word programming is no problem.But, i use block programming then CPU halted.....#pragma location = 'FLASH_CODE'void Mem_ProgramBlock(u16 BlockNum, const u8 *Buffer){ u16 Count = 0; u32 StartAddress = 0;/* Set Start address wich refers to mem_type */ StartAddress = FLASH_PROGRAM_START_PHYSICAL_ADDRESS; /* Point to the first block address */ StartAddress = StartAddress + ((u32)BlockNum * FLASH_BLOCK_SIZE);/* Standard programming mode */ FLASH->CR2 |= (u8)0x01; /* Copy data bytes from RAM to FLASH memory */ for (Count = 0; Count < FLASH_BLOCK_SIZE; Count++) { *((PointerAttr u8*)StartAddress + Count) = ((u8)(Buffer[Count]));     <= Halted

Posted on August 22, 2017 at 05:28I have a problem with touch sensing on STM8L151K4, It is impossibe to increase number of touch key to 12.I use sample project in STM8L_Touch_Lib and re-config the channel in 'tsl_user.h'. It work if i configure 6 keys but doesn't work if i configure 7,8,9,..keys.Could anyone help me?#stm8l-touch

Posted on August 22, 2017 at 08:53I'm use STM8L152R8.I should be firmware upgrade using this cpu.But, I have some problem as below...Byte programming and word programming is no problem as belowFLASH->CR1 = 0; // Standard programming Time (EEPM, WAITM, IE Clear) FLASH->DUKR = FLASH_RASS_KEY2; // Unlock Flash Data FLASH->DUKR = FLASH_RASS_KEY1; while ((FLASH->IAPSR & FLASH_IAPSR_DUL) == 0); // Wait Data EEPROM are unlock...[Byte Programmin]for (ulAddr = ulStartAddr; ulAddr < ulEndAddr; ulAddr++)  *((PointerAttr u8*) (MemoryAddressCast)ulAddr) = *i_pData++; [Word programming]FLASH->CR2 |= FLASH_CR2_WPRG; for (ulAddr = ulStartAddr; ulAddr < ulEndAddr; ulAddr += 4) // All write Size { *((PointerAttr u8*)(MemoryAddressCast)ulAddr) = *i_pData++; *(((PointerAttr u8*)(MemoryAddressCast)ulAddr) + 1) = *i_pDat

Posted on September 08, 2016 at 13:22 What is the right procedure to write to EEPROM? I saw the following code: oid CEEPROM::UNLOCK_EEPROM_IF_LOCKED() { if ( EEPROM_IS_WRITE_PROTECTED() ) { FLASH_DUKR = 0xAE; FLASH_DUKR = 0x56; while (EEPROM_IS_WRITE_PROTECTED()); } } void CEEPROM::LOCK_EEPROM() { FLASH_IAPSR_DUL = 0; while( !EEPROM_IS_WRITE_PROTECTED() ); } void CEEPROM::Write(unsigned short address, unsigned char data) { UNLOCK_EEPROM_IF_LOCKED(); *(unsigned char*)(address) = data; LOCK_EEPROM(); } but I doubt it.

Posted on July 06, 2017 at 10:08The new STM8CubeMX listed a new MCU called: STM8S001J3MxI have tried to google for it, but Ihave found Chinese only results showing demo boards too.Are there any hints when it will available for public?#stm8s001j3mx #stm8s001

Posted on August 17, 2017 at 21:26It seems there are very few evaluation boards for the STM8A and for the cheap STM8 with lots of RAM. Basically the STMA-Discovery is the one notable exception.I'd like to see more boards for the STM8A and for other STM8 that have at least 4K of RAM. The following STM8 variants seem to be particular interesting, but don't have evaluation boards yet (which means I could find neither ST nor third-party boards):STM8AF6286 (the cheapest STM8AF with 6K of RAM)STM8S007C6 (the cheapest STM8S with 6K of RAM)STM8AL31E8A (the cheapest STM8AL with 4K of RAM)STM8AF5268 (another relatively cheap STM8AF with 6K of RAM)STM8S207K6 (another relatively cheap STM8S with 6K of RAM)Does anyone know of boards for these (either already available or upcoming)?Philipp

Posted on January 05, 2017 at 15:212017 STM8 Wish ListDear Community Members & STM8 funs,BEST WISHES for the New Year!!!As done for the STM32 Community , and to satisfy STM8 users who want to express their STM8 related expectations (like  who already started it in :( we would like to hear you and gather all wishes here. So please keep us informed on:what you need to make STM8 products more useful for you?what has to be improved on our side?...Again, feel free to express all your expectations!