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add timeout for USB writting on CDC

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This commit is contained in:
Edward Emelianov
2025-07-15 19:52:44 +03:00
parent fca7e896fa
commit 233eed8b12
7 changed files with 73 additions and 22 deletions
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21
F1:F103/BISS_C_encoders/usb_dev.c
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@@ -19,6 +19,7 @@
#include <string.h>
#include "ringbuffer.h"
#include "strfunc.h" // for cmd interface
#include "usb_descr.h"
#include "usb_dev.h"
@@ -42,6 +43,8 @@
#undef DBGs
#define DBGs(x)
extern volatile uint32_t Tms;
// inbuf overflow when receiving
static volatile uint8_t bufovrfl[bTotNumEndpoints] = {0};
@@ -110,7 +113,7 @@ static void rxtx_handler(){
DBG("rxtx_handler");
DBGs(uhex2str(ifno));
if(ifno > bTotNumEndpoints-1){
DBG("wront ifno");
DBG("wrong ifno");
return;
}
uint16_t epstatus = KEEP_DTOG(USB->EPnR[1+ifno]);
@@ -138,6 +141,8 @@ void WEAK linecoding_handler(uint8_t ifno, usb_LineCoding *lc){
lineCoding[ifno] = *lc;
DBG("linecoding_handler");
DBGs(uhex2str(ifno));
CMDWR("Interface "); CMDWR(u2str(ifno));
CMDWR(" got linecoding with speed "); CMDWRn(u2str(lc->dwDTERate));
}
// SET_CONTROL_LINE_STATE
@@ -147,6 +152,9 @@ void WEAK clstate_handler(uint8_t ifno, uint16_t val){
DBGs(uhex2str(val));
CDCready[ifno] = val; // CONTROL_DTR | CONTROL_RTS -> interface connected; 0 -> disconnected
lastdsz[ifno] = -1;
if(val == 0) CMDWR("dis");
CMDWR("connected interface ");
CMDWRn(u2str(ifno));
}
// SEND_BREAK
@@ -155,6 +163,8 @@ void WEAK break_handler(uint8_t ifno){
lastdsz[ifno] = -1;
DBG("break_handler()");
DBGs(uhex2str(ifno));
CMDWR("Disconnected interface ");
CMDWRn(u2str(ifno));
}
@@ -172,13 +182,13 @@ void set_configuration(){
}
}
// PL2303 CLASS request
// USB CDC CLASS request
void usb_class_request(config_pack_t *req, uint8_t *data, uint16_t datalen){
uint8_t recipient = REQUEST_RECIPIENT(req->bmRequestType);
uint8_t dev2host = (req->bmRequestType & 0x80) ? 1 : 0;
uint8_t ifno = req->wIndex >> 1;
if(ifno > bTotNumEndpoints-1 && ifno != 0xff){
DBG("wront ifno");
DBG("wrong ifno");
return;
}
DBG("usb_class_request");
@@ -222,7 +232,12 @@ void usb_class_request(config_pack_t *req, uint8_t *data, uint16_t datalen){
// blocking send full content of ring buffer
int USB_sendall(uint8_t ifno){
uint32_t T0 = Tms;
while(lastdsz[ifno] > 0){
if(Tms - T0 > DISCONN_TMOUT){
break_handler(ifno);
return FALSE;
}
if(!CDCready[ifno]) return FALSE;
IWDG->KR = IWDG_REFRESH;
}