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Tidy-up file structure and code style

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This commit is contained in:
George Oikonomou 2017-11-22 02:26:31 +00:00
parent 24b17e58b1
commit 4522b5b942
1 changed files with 17 additions and 22 deletions
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39
os/dev/slip.c
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@ -26,46 +26,42 @@
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
#include <stdio.h>
#include <string.h>
/*---------------------------------------------------------------------------*/
#include "contiki.h"
#include "net/ipv6/uip.h"
#include "dev/slip.h"
#include <stdio.h>
#include <string.h>
/*---------------------------------------------------------------------------*/
#define SLIP_END 0300
#define SLIP_ESC 0333
#define SLIP_ESC_END 0334
#define SLIP_ESC_ESC 0335
/*---------------------------------------------------------------------------*/
PROCESS(slip_process, "SLIP driver");
uint8_t slip_active;
/*---------------------------------------------------------------------------*/
#if 1
#define SLIP_STATISTICS(statement)
#else
uint16_t slip_rubbish, slip_twopackets, slip_overflow, slip_ip_drop;
#define SLIP_STATISTICS(statement) statement
#endif
/*---------------------------------------------------------------------------*/
/* Must be at least one byte larger than UIP_BUFSIZE! */
#define RX_BUFSIZE (UIP_BUFSIZE - UIP_LLH_LEN + 16)
/*---------------------------------------------------------------------------*/
enum {
STATE_TWOPACKETS = 0, /* We have 2 packets and drop incoming data. */
STATE_TWOPACKETS = 0, /* We have 2 packets and drop incoming data. */
STATE_OK = 1,
STATE_ESC = 2,
STATE_RUBBISH = 3,
};
/*---------------------------------------------------------------------------*/
/*
* Variables begin and end manage the buffer space in a cyclic
* fashion. The first used byte is at begin and end is one byte past
@ -76,13 +72,12 @@ enum {
* [pkt_end, end). If more bytes arrive in state STATE_TWOPACKETS
* they are discarded.
*/
static uint8_t state = STATE_TWOPACKETS;
static uint16_t begin, next_free;
static uint8_t rxbuf[RX_BUFSIZE];
static uint16_t pkt_end; /* SLIP_END tracker. */
static uint16_t pkt_end; /* SLIP_END tracker. */
static void (* input_callback)(void) = NULL;
static void (*input_callback)(void) = NULL;
/*---------------------------------------------------------------------------*/
void
slip_set_input_callback(void (*c)(void))
@ -169,7 +164,7 @@ slip_poll_handler(uint8_t *outbuf, uint16_t blen)
len = 0;
break;
}
if (esc) {
if(esc) {
if(rxbuf[i] == SLIP_ESC_ESC) {
outbuf[len] = SLIP_ESC;
len++;
@ -193,7 +188,7 @@ slip_poll_handler(uint8_t *outbuf, uint16_t blen)
len = 0;
break;
}
if (esc) {
if(esc) {
if(rxbuf[i] == SLIP_ESC_ESC) {
outbuf[len] = SLIP_ESC;
len++;
@ -214,7 +209,7 @@ slip_poll_handler(uint8_t *outbuf, uint16_t blen)
len = 0;
break;
}
if (esc) {
if(esc) {
if(rxbuf[i] == SLIP_ESC_ESC) {
outbuf[len] = SLIP_ESC;
len++;
@ -280,7 +275,7 @@ PROCESS_THREAD(slip_process, ev, data)
/* Move packet from rxbuf to buffer provided by uIP. */
uip_len = slip_poll_handler(&uip_buf[UIP_LLH_LEN],
UIP_BUFSIZE - UIP_LLH_LEN);
UIP_BUFSIZE - UIP_LLH_LEN);
if(uip_len > 0) {
if(input_callback) {
@ -308,7 +303,7 @@ slip_input_byte(unsigned char c)
if(c != SLIP_ESC_END && c != SLIP_ESC_ESC) {
state = STATE_RUBBISH;
SLIP_STATISTICS(slip_rubbish++);
next_free = pkt_end; /* remove rubbish */
next_free = pkt_end; /* remove rubbish */
return 0;
}
state = STATE_OK;