C++ (Cpp) pin_pull_up Examples

Example #1

File: periph_altfn.c Project: BuFran/hal

/* Initialize pins in complex peripheral */
void init_eth(void)
{
	int phy_pins[] = {
		PHY_CRSDV,	PHY_RXD0,	PHY_RXD1,	PHY_REFCLK,
		PHY_TXEN,	PHY_TXD0,	PHY_TXD1,	PHY_MDIO,
		PHY_MDC
	};
	
	/* Initialize all pins that belongs to RMII */
	for (int i = 0; i < sizeof(phy_pins) / sizeof(phy_pins[0]); i++) {
		pin_clock_enable(phy_pins[i]);
		pin_af_pushpull(phy_pins[i]);
		pin_speed_high(phy_pins[i]);
		pin_af_map(phy_pins[i], GPIO_AF_ETH);
	}

	pin_input(PHY_INTRP);
	pin_pull_up(PHY_INTRP);
	pin_set(PHY_RST, true);
	pin_output_pushpull(PHY_RST);


	/* Reset the connected PHY by signal */
	pin_set(PHY_RST, false);
	for (int i = 0; i < 10000; i++) {
		__asm volatile ("nop");
	}
	pin_set(PHY_RST, true);
	for (int i = 0; i < 10000; i++) {
		__asm volatile ("nop");
	}
	
	/* Initialize phy over SNI */
	phy_reset(1);			/* out of scope of this example */
	
	/* Initialize ethernet MAC */
	eth_init();			/* out of scope of this example */
}

Example #2

File: main.c Project: 2thetop/t2-firmware

int main(void) {
    if (PM->RCAUSE.reg & (PM_RCAUSE_POR | PM_RCAUSE_BOD12 | PM_RCAUSE_BOD33)) {
        // On powerup, force a clean reset of the MT7620
        pin_low(PIN_SOC_RST);
        pin_out(PIN_SOC_RST);

        // turn off 3.3V to SoC
        pin_low(PIN_SOC_PWR);
        pin_out(PIN_SOC_PWR);

        // pull 1.8V low
        pin_low(PIN_18_V);
        pin_out(PIN_18_V);

        clock_init_crystal(GCLK_SYSTEM, GCLK_32K);
        timer_clock_enable(TC_BOOT);

        // hold everything low
        boot_delay_ms(50); // power off for 50ms

        pin_high(PIN_SOC_PWR);

        boot_delay_ms(2); // 2ms until 1.8 rail comes on

        pin_high(PIN_18_V);

        boot_delay_ms(50); // 50ms before soc rst comes on
    } else {
        clock_init_crystal(GCLK_SYSTEM, GCLK_32K);
    }

    pin_mux(PIN_USB_DM);
    pin_mux(PIN_USB_DP);
    usb_init();
    usb_attach();
    NVIC_SetPriority(USB_IRQn, 0xff);

    pin_high(PIN_LED);
    pin_out(PIN_LED);

    pin_in(PIN_SOC_RST);

    pin_high(PIN_SOC_PWR);
    pin_out(PIN_SOC_PWR);

    pin_low(PORT_A.power);
    pin_out(PORT_A.power);

    pin_low(PORT_B.power);
    pin_out(PORT_B.power);

    pin_pull_up(PIN_BRIDGE_CS);
    pin_pull_up(PIN_FLASH_CS);

    pin_pull_up(PIN_SERIAL_TX);
    pin_pull_up(PIN_SERIAL_RX);

    dma_init();
    NVIC_EnableIRQ(DMAC_IRQn);
    NVIC_SetPriority(DMAC_IRQn, 0xff);

    eic_init();
    NVIC_EnableIRQ(EIC_IRQn);
    NVIC_SetPriority(EIC_IRQn, 0xff);

    evsys_init();
    NVIC_EnableIRQ(EVSYS_IRQn);
    NVIC_SetPriority(EVSYS_IRQn, 0);

    adc_init(GCLK_SYSTEM, ADC_REFCTRL_REFSEL_INTVCC1);
    dac_init(GCLK_32K);

    bridge_init();

    port_init(&port_a, 1, &PORT_A, GCLK_PORT_A,
        TCC_PORT_A, DMA_PORT_A_TX, DMA_PORT_A_RX);
    port_init(&port_b, 2, &PORT_B, GCLK_PORT_B,
        TCC_PORT_B, DMA_PORT_B_TX, DMA_PORT_B_RX);

    __enable_irq();
    SCB->SCR |= SCB_SCR_SLEEPONEXIT_Msk;
    
    init_systick();

    while (1) { __WFI(); }
}