C++ (Cpp) __tcu_stop_counter Examples

Example #1

File: timer-jz4740.c Project: 4nykey/rockbox

bool timer_set(long cycles, bool start)
{
    unsigned int divider = cycles, prescaler_bit = 0, prescaler = 1, old_irq;

    if(cycles < 1)
        return false;

    if(start && pfn_unregister != NULL)
    {
        pfn_unregister();
        pfn_unregister = NULL;
    }

    /* Increase prescale values starting from 0 to make the cycle count fit */
    while(divider > 65535 && prescaler <= 1024)
    {
        prescaler <<= 2; /* 1, 4, 16, 64, 256, 1024 */
        prescaler_bit++;
        divider = cycles / prescaler;
    }

    old_irq = disable_irq_save();

    __tcu_stop_counter(1);
    if(start)
    {
        __tcu_disable_pwm_output(1);

        __tcu_mask_half_match_irq(1); 
        __tcu_unmask_full_match_irq(1);

        /* EXTAL clock = CFG_EXTAL (12Mhz in most targets) */
        __tcu_select_extalclk(1);
    }

    REG_TCU_TCSR(1) = (REG_TCU_TCSR(1) & ~TCU_TCSR_PRESCALE_MASK) | (prescaler_bit << TCU_TCSR_PRESCALE_BIT);
    REG_TCU_TCNT(1) = 0;
    REG_TCU_TDHR(1) = 0;
    REG_TCU_TDFR(1) = divider;

    __tcu_clear_full_match_flag(1);

    if(start)
    {
        system_enable_irq(IRQ_TCU1);
        __tcu_start_counter(1);
    }

    restore_irq(old_irq);

    return true;
}

Example #2

File: backlight-onda_vx7X7.c Project: 4nykey/rockbox

static void set_backlight(int val)
{
    if(val == old_val)
        return;

    __tcu_disable_pwm_output(BACKLIGHT_PWM);
    __tcu_stop_counter(BACKLIGHT_PWM);

    __tcu_set_count(BACKLIGHT_PWM, 0);
    __tcu_set_half_data(BACKLIGHT_PWM, logtable[val - 1]);
    __tcu_set_full_data(BACKLIGHT_PWM, 256);

    __tcu_start_counter(BACKLIGHT_PWM);
    __tcu_enable_pwm_output(BACKLIGHT_PWM);

    old_val = val;
}

Example #3

/* This function will delay sdelay ms*/
static void sd_mdelay(int sdelay)
{
	__tcu_set_count(0,0);
	__tcu_disable_pwm_output(0);
	__tcu_select_rtcclk(0);
	__tcu_select_clk_div1(0);

	__tcu_mask_half_match_irq(0); 
	__tcu_mask_full_match_irq(0);

	REG_TCU_TDFR(0) = 32; // 1 ms 
	__tcu_start_counter(0);

	while(1) {
		if(REG_TCU_TCNT(0) > sdelay)
			break;
	}
	__tcu_stop_counter(0);
	__tcu_stop_timer_clock(0);
}

Example #4

File: backlight-onda_vx7X7.c Project: 4nykey/rockbox

bool _backlight_init(void)
{
    __gpio_as_pwm(BACKLIGHT_PWM);
    __tcu_start_timer_clock(BACKLIGHT_PWM);

    __tcu_stop_counter(BACKLIGHT_PWM);
    __tcu_init_pwm_output_low(BACKLIGHT_PWM);
    __tcu_set_pwm_output_shutdown_graceful(BACKLIGHT_PWM);
    __tcu_disable_pwm_output(BACKLIGHT_PWM);

    __tcu_select_extalclk(BACKLIGHT_PWM);  /* 12 MHz */
    __tcu_select_clk_div64(BACKLIGHT_PWM); /* 187.5 kHz */

    __tcu_mask_half_match_irq(BACKLIGHT_PWM);
    __tcu_mask_full_match_irq(BACKLIGHT_PWM);

    __tcu_set_count(BACKLIGHT_PWM, 0);
    __tcu_set_half_data(BACKLIGHT_PWM, 0);
    __tcu_set_full_data(BACKLIGHT_PWM, 256);

    return true;
}

Example #5

File: delay.c Project: dmitrysmagin/dingoo-linux

void mdelay (unsigned int ms) {

	int i;

	__tcu_disable_pwm_output(3);
	__tcu_mask_half_match_irq(3);
	__tcu_mask_full_match_irq(3);
	__tcu_select_extalclk(3);
	__tcu_select_clk_div16(3);

	REG_TCU_TDFR(3) = CFG_EXTAL / 16 / 1000;
	REG_TCU_TDHR(3) = CFG_EXTAL / 16 / 1000;

	__tcu_set_count(3, 0);
	__tcu_start_counter(3);

	for (i = 0; i < ms; i++) {
		__tcu_clear_full_match_flag(3);
		while (!__tcu_full_match_flag(3));
	}

	__tcu_stop_counter(3);
}

Example #6

File: timer-jz4740.c Project: 4nykey/rockbox

void timer_stop(void)
{
    unsigned int old_irq = disable_irq_save();
    __tcu_stop_counter(1);
    restore_irq(old_irq);
}

Example #7

File: backlight-onda_vx7X7.c Project: 4nykey/rockbox

static void set_backlight_off(void)
{
    __tcu_disable_pwm_output(BACKLIGHT_PWM);
    __tcu_stop_counter(BACKLIGHT_PWM);
}