rikka0w0/ch55x_usb_compositedevice

USB Composite Device Demo (Keyboard, Custom HID and Massive Storage) using CH55x

ch55x_usb_compositedevice's Issues

鼠标可以支持吗？

除了键盘，鼠标可以支持吗？

Interrupts

Hiya,

There's a comment in main.c that asks:

 * According to SDCC specification, interrupt handlers MUST be placed within the file which contains
 * the void main(void) function, otherwise SDCC won't be able to recognize it. It's not a bug but a feature.
 * If you know how to fix this, please let me know.

CH55x_USB_CompositeDevice/main.c

Line 27 in 489bcf7

* According to SDCC specification, interrupt handlers MUST be placed within the file which contains

The SDCC specification actually states that interrupt handlers must be defined in main. The implementation of the function can exist elsewhere. See http://fivedots.coe.psu.ac.th/~cj/masd/resources/sdcc-doc/SDCCUdoc-11.html

I've also independently verified this assertion using some custom USB code on the CH554, compiled using SDCC. e.g.

void main()
{
    clock_init();
    uart1_init(1);
    usbd_init();

    LED_PORT_DIR |= LED_MSK;
    LED_PORT_PU &= ~(LED_MSK);

    while (1)
    {
        LED_PORT |= LED_MSK;
        wait_ms(500);
        LED_PORT &= ~LED_MSK;
        wait_ms(500);
    }
}

void usb_int(void) __interrupt(INT_NO_USB);

and in usbd.c:

void usb_int(void) __interrupt(INT_NO_USB) {
    ....