STM8 MCUs

Resolved! Is there any pre-requirments on using PC0 & PC1 as GPIO PP in STM8L051?

Hi all,I am trying to use STM8L051 port c pin 0 as an output to drive a NPN. But I find that PC0 & PC1 cannot be set by using ST HAL library. All the registers seems ok (DDR, ODR, CR1 & CR2). And PC4,5,6 can be driven. Can anyone please give me a han...

How to check open drain pins PB4 and PB5 working properly for I2c communication [STM8S003F3P6]

I am trying to get I2C working for STM8S003F3P6 with ESP8266. I tried I2C sample code available with standard periferal library https://www.st.com/en/embedded-software/stsw-stm8069.html . But for some reason I2c is not working. Now I just noticed the...

Resolved! [STM8S003F3P6] GPIO(PB5) ouputs 5V when set HIGH using 3.3v power supply[RESOLVED]

I am trying to run simple program to output HIGH on IO pin of microcontroller STM8S003F3P6. I am using PB5 pin to output High. I am using 3.3v power supply and expect GPIO to output 3.3v when I set it HIGH but surprisingly I am getting 5V instead, b...

symbol _GPIO_Init not defined (Debug\main.o )

I tried the example code in this document - dm00405517-getting-started-with-the-stm8s001j3-microcontroller-stmicroelectronics.pdf, the code was://Recommendation for STM8S001J3 firmware AN5047 12/20 Rev 2 /* MAIN.C file */ #include "stm8s.h" #include ...

I'm trying to add multiple interrupts on the same port (portD) on my stm8s003f3. I'm not able to attach the second interrupt to the ext interrupt handler function. Some info might help.

how to clear the pending external interrupt

@svlreg INTERRUPT_HANDLER(EXTI_PORTD_IRQHandler, 6){ /* In order to detect unexpected events during development, it is recommended to set a breakpoint on the following instruction. */ if((SWITCH == RESET) && (flag == SET)) { OFF_STATUS = TRUE; fla...

How to use Timer in an external interrupt

I have an STM8S00f3p6 controller I was able to do the external interrupt and do the GPIO operations in the interrupt.Now my requirement is like after getting the inerrupt I need to make two GPIOS high for some seconds and make them down after time ex...

Why internal pull-up on PB7 is not working? (STM8L152R8)

I was making a basic test for GPIO ports (reading switches and turning on LEDs). After configuring PORTB (all pins) as input with internal pull-up and external interrupts disabled, PB7 seems to be always in '0'. After opening IAR-EW debugger, PB_DDR...

How to use non - default pin mapping for STM8 micros ?

For example how can the IO pins be set for alternate function mapping to non-default pin. As per datasheet same alternate pin function is mapped to multiple pins. For example USART1_TX is shown to be available on PC3 and also PA2. By programming all ...

External interrupt flags latching behaviour?

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 thei...