Can't enable TIM2 capture compare interruption

[ilyamordasov]

I wanna get the signal in transparent mode, for that I use TIM2_CH2 for input capture, however I can't call interrupt.

I added irq handler into main.c

ISR_TIM2_CC(TIM2_CAP_COM) {
    printf("/\r\n");
    if (TIM2_SR1 & 0x04) { // interrupt on rising edge
        if (!flag){
            flag = true;
            pulse_width = 0;
            TIM2_SR1 = 0;
        }
        else {
            flag = false;
            period = ((TIM2_CCR2L | (TIM2_CCR2H << 8)) - period);
            if (period > 200) { // check if it's not a preamble
                code = (code << 1) | (pulse_width < period/2) ? 1 : 0;
                period = 0;
                TIM2_CCR2H = 0;
                TIM2_CCR2L = 0;
                counter++;
            }
            else {
                preamble = (preamble << 1) | 1;
            }
        }
        
        if (TIM2_SR2) { // overcapture
            TIM2_SR2 = 0;
        }
    }
    if (TIM2_SR1 & 0x02) { // interrupt on falling edge
        pulse_width = TIM2_CCR2L | (TIM2_CCR2H << 8);
        if (counter >= 60) {
            printf("Preamble: 0x%x\r\n", preamble);
            printf("Code: 0x%x\r\n", code);
            counter = 0;
        }
    }
}

But even I can't display printf