STM32F1, STMCubeMX, PWM, Digital piranha LED

STM32F1, STMCubeMX, PWM, Digital piranha LED

0. 참고 자료

테스트를 진행한 모듈의 스펙 중에 PWM 관련한 자료가 없어서 임의로 동작시켰습니다.

1. 모듈

2. HW 구성

3V3 ~ 5V 로 구동됨

3. Timer Enable

• Clock Source : Internal Clock
• Channel1 : PWM Generation CH1

4. RCC > HSE > Crystal/Ceramic Resonator

5. Clock Configuration > 72MHz

6. Configuration > TIM

7. Parameter Settings

Prescaler : 72-1

Counter Period : 100

    /*
        0.1ms

        1) 72MHz System Clock, Prescaler 1MHz Timer Clock
            Prescaler = 72MHz / 72MHz - 1 = 1MHz
        2) 1MHz Timer Clock, 100, 10KHz
            Period = 1MHz / 10KHz = 100
    */

8. SW 구성

HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_1); htim3.Instance->CCR1 = 0; // % duty cycle uint8_t duty = 0;      while (1) {     htim3.Instance->CCR1 = duty;     duty = duty + 1;     if (duty>100)         duty = 0;       HAL_Delay(100); }

9. 소스

https://github.com/sglee0223/stm32f103ve/tree/master/digital_piranha_led

10. 결과

https://youtu.be/smA_ocC1zqs

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