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samples: wpan_serial: Take into account bytes written

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uart_fifo_fill() returns number of bytes written, use helper to write
all bytes.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
This commit is contained in:
Andrei Emeltchenko 2018-08-14 15:34:57 +03:00 • committed by Anas Nashif
commit 8315420df0
1 changed files with 19 additions and 1 deletions
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20
samples/net/wpan_serial/src/main.c
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@ -410,6 +410,23 @@ static size_t slip_buffer(u8_t *sbuf, struct net_buf *buf)
return sbuf - sbuf_orig;
}
static int try_write(u8_t *data, u16_t len)
{
int wrote;
while (len) {
wrote = uart_fifo_fill(uart_dev, data, len);
if (wrote <= 0) {
return wrote;
}
len -= wrote;
data += wrote;
}
return 0;
}
/**
* TX - transmit to SLIP interface
*/
@ -440,7 +457,8 @@ static void tx_thread(void)
/* SLIP encode and send */
len = slip_buffer(slip_buf, buf);
uart_fifo_fill(uart_dev, slip_buf, len);
try_write(slip_buf, len);
net_pkt_unref(pkt);