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- CDC: all required class-defined requests implemented

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- CDC: interrupt endpoint ZLP response added
This commit is contained in:
Wiesner András 2024-04-21 20:41:47 +02:00
parent 3e67079427
commit cb9a3c33ca
1 changed files with 13 additions and 1 deletions
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14
class/cdc.c
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@ -42,6 +42,8 @@ void usb_cdc_init(const USB_CdcAssignments *as) {
cdcs.initialized = true;
}
//static uint8_t replyBuf[sizeof(USB_Cdc_LineCodingStruct)];
int usb_cdc_process_and_return(USB_CallbackEvent *cbevt) {
int ret = -1;
switch (cbevt->type) {
@ -52,6 +54,16 @@ int usb_cdc_process_and_return(USB_CallbackEvent *cbevt) {
//MSG("%u\n", cdcs.line_coding.dwDTERate);
ret = 0;
break;
case USB_CDC_GET_LINE_CODING: // get line coding
cbevt->reply_data = (const uint8_t *) &cdcs.line_coding; // expert move: pass the pointer, no copying
cbevt->reply_size = sizeof(USB_Cdc_LineCodingStruct);
cbevt->reply_valid = true; // the reply has been set to something valid
ret = 0;
break;
case USB_CDC_SEND_BREAK: // send break
// do nothing
ret = 0;
break;
case USB_CDC_SET_CONTROL_LINE_STATE: // set control line state
memcpy(&cdcs.control_line_state, cbevt->data, sizeof(USB_Cdc_ControlLineStateStruct));
//MSG("%u\n", cdcs.control_line_state.D);
@ -84,7 +96,7 @@ int usb_cdc_process_and_return(USB_CallbackEvent *cbevt) {
case USB_CBEVT_IN: {
if (cbevt->ep == cdcs.ep_assignments.control_ep) { // if notification feeding is requested
//usbcore_write(cdcs.ep_assignments.control_ep, NULL, 0); // send ZLP
usbcore_write(cdcs.ep_assignments.control_ep, NULL, 0); // send ZLP
ret = 0;
} else if (cbevt->ep == cdcs.ep_assignments.data_ep) { // if data are requested
//usbcore_write(cdcs.ep_assignments.data_ep, NULL, 0); // send ZLP