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USBUS CDC ACM STDIO: flush stdio buffer upon write

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This commit is contained in:
Antonio Galea 2019-10-09 11:20:52 +02:00
parent 9bc600a2e5
commit b0b2ba61c1
1 changed files with 9 additions and 4 deletions
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13
sys/usb/usbus/cdc/acm/cdc_acm_stdio.c
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@ -52,10 +52,15 @@ ssize_t stdio_read(void* buffer, size_t len)
ssize_t stdio_write(const void* buffer, size_t len)
{
usbus_cdc_acm_submit(&cdcacm, buffer, len);
usbus_cdc_acm_flush(&cdcacm);
/* Use tsrb and flush */
return len;
const char *start = buffer;
do {
size_t n = usbus_cdc_acm_submit(&cdcacm, buffer, len);
usbus_cdc_acm_flush(&cdcacm);
/* Use tsrb and flush */
buffer = (char *)buffer + n;
len -= n;
} while (len);
return start - (char *)buffer;
}
static void _cdc_acm_rx_pipe(usbus_cdcacm_device_t *cdcacm,