Forum Posts
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...
How can this code be simplified?
Can the TIM1 part of this tutorial be simplified as follows?https://embedded-lab.com/blog/continuing-stm8-microcontroller-expedition/6/Remove everything related to the the interrupt, because TIM1_GetCapture2() can be called at any time from main(). I...
What is going on with this PWM output timer 2?
I am following this tutorial and trying to get a complete understanding of the code:https://embedded-lab.com/blog/continuing-stm8-microcontroller-expedition/6/I have a few questions regarding the TIM2_setup(void) function:1 Why is channel 1 and chann...
Resolved! Can an optocoupler be connected between MCU pin and ground without resistor?
My current design has +5V connected to an optocoupler output pin, the other optocoupler pin is connected to ground through a 25k resistor. (External pull down) The connection point between the optocoupler and the resistor is connected to the MCU pin ...
Resolved! Simple wiring of STM8S003F3P6TR for one input and one output
GreetingsI'm using an STM8S003F3 TSSOP20 (my first STMicro) for a simple project with one input (low frequency PWM) and one output (high frequency PWM). I seek to keep it as simple as possible. Since I'm not familiar with STMicro MCU's, I would like ...
How to calculate the PPM deviation for 512Hz?
Hi ST team,I referred the Application notes from the ST's for RTC temperature compensation Using STM8AL3189 MCU , Which has both positive and negative ppm compensation using CALM and CALPFrom the APP notes, ACC(ppm) = crystal deviation + k * (T -T0)^...
After I load a program into flash on a STM8L152R8T6, is there a way to make it boot to that code at power-up?
Arduino sketch, cosmic compiler, USB STLink programmer
Resolved! what is the meaning of 'EXTI_IT_Pin7' in the below-given code? I am using the STM8L1526 Discovery Board.
#include "stm8l15x.h"#include "stm8l15x_gpio.h"#include "stm8l15x_itc.h"#include "stm8l15x_exti.h"#include "stm8l15x_clk.h"#include "stm8l15x_rtc.h"#include "stm8l15x_tim2.h"#include "stm8l15x_tim1.h"#include "stm8l15x_tim3.h"#include "stm8l15x_tim4....
How to clear/reset timer WITHOUT generating/setting UIF flag??
In documentation for timers on S103/S105/S003 it says that bit URS or register TIMx_CR1 should allow that CNTR=x or EGR |= UG update the timer counter WITHOUT setting the UIF flag: TIM2:URS: Update request source0: When enabled by the UDIS bit, the U...