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fixed bug when sending data larger than buffer size

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This commit is contained in:
Edward Emelianov 2025-10-05 00:00:22 +03:00
parent c7f6718d2e
commit f994799353
1 changed files with 10 additions and 1 deletions
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11
F3:F303/USB_template_CDC/usb_dev.c
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@ -165,7 +165,16 @@ int USB_sendall(){
int USB_send(const uint8_t *buf, int len){
if(!buf || !CDCready || !len) return FALSE;
while(len){
int a = RB_write((ringbuffer*)&rbout, buf, len);
IWDG->KR = IWDG_REFRESH;
int l = RB_datalen((ringbuffer*)&rbout);
if(l < 0) continue;
int portion = rbout.length - 1 - l;
if(portion < 1){
if(lastdsz == 0) send_next();
continue;
}
if(portion > len) portion = len;
int a = RB_write((ringbuffer*)&rbout, buf, portion);
if(a > 0){
len -= a;
buf += a;