USBD — 复合设备: 双 CDC

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#include "dual_cdc_acm_core.h"
#include "usbd_hw.h"

int main(void)
{
    /* system clocks configuration */
    rcu_config();

    /* GPIO configuration */
    gpio_config();

    /* USB device configuration */
    usbd_init(&usbd_dual_cdc, &dual_cdc_desc, &dual_cdc_class);

    /* NVIC configuration */
    nvic_config();

    /* enabled USB pull-up */
    usbd_connect(&usbd_dual_cdc);

    while(USBD_CONFIGURED != usbd_dual_cdc.cur_status) {
        /* wait for standard USB enumeration is finished */
    }

    while(1) {
        if(0U == cdc_check_ready0(&usbd_dual_cdc)) {
            cdc_data_receive0(&usbd_dual_cdc);
        } else {
            cdc_acm_data_send0(&usbd_dual_cdc);
        }

        if(0U == cdc_check_ready1(&usbd_dual_cdc)) {
            cdc_data_receive1(&usbd_dual_cdc);
        } else {
            cdc_acm_data_send1(&usbd_dual_cdc);
        }
    }
}