/*
* Getter and setter functions
*/
static int _get_addr_long(xbee_t *dev, uint8_t *val, size_t len)
{
uint8_t cmd[2];
resp_t resp;
if (len < IEEE802154_LONG_ADDRESS_LEN) {
return -EOVERFLOW;
}
/* read 4 high byte - AT command: SH*/
cmd[0] = 'S';
cmd[1] = 'H';
_api_at_cmd(dev, cmd, 2, &resp);
if (resp.status == 0) {
memcpy(val, resp.data, 4);
}
else {
return -ECANCELED;
}
/* read next 4 byte - AT command: SL */
cmd[1] = 'L';
_api_at_cmd(dev, cmd, 2, &resp);
if (resp.status == 0) {
memcpy(val + 4, resp.data, 4);
return IEEE802154_LONG_ADDRESS_LEN;
}
return -ECANCELED;
}
static int _set_addr(xbee_t *dev, uint8_t *val, size_t len)
{
uint8_t cmd[4];
resp_t resp;
/* device only supports setting the short address */
if (len != 2) {
return -ENOTSUP;
}
cmd[0] = 'M';
cmd[1] = 'Y';
cmd[2] = val[0];
cmd[3] = val[1];
#ifdef MODULE_SIXLOWPAN
/* https://tools.ietf.org/html/rfc4944#section-12 requires the first bit to
* 0 for unicast addresses */
val[1] &= 0x7F;
#endif
_api_at_cmd(dev, cmd, 4, &resp);
if (resp.status == 0) {
memcpy(dev->addr_short, val, 2);
return 2;
}
return -ECANCELED;
}
static int _set_encryption(xbee_t *dev, uint8_t *val)
{
uint8_t cmd[3];
resp_t resp;
/* get the current state of Encryption */
cmd[0] = 'E';
cmd[1] = 'E';
_api_at_cmd(dev, cmd, 2, &resp);
/* Prevent writing the same value in EE. */
if (val[0] != resp.data[0] ){
cmd[0] = 'E';
cmd[1] = 'E';
cmd[2] = val[0];
_api_at_cmd(dev, cmd, 3, &resp);
}
if (resp.status == 0) {
return 2;
}
return -ECANCELED;
}
static int _set_short_addr(xbee_t *dev, uint8_t *address)
{
uint8_t cmd[4];
resp_t resp;
cmd[0] = 'M';
cmd[1] = 'Y';
cmd[2] = address[0];
cmd[3] = address[1];
_api_at_cmd(dev, cmd, 4, &resp);
return resp.status;
}
static int _set_channel(xbee_t *dev, uint8_t *val, size_t len)
{
uint8_t cmd[3];
resp_t resp;
if (len != 2 || val[1] != 0) {
return -EINVAL;
}
cmd[0] = 'C';
cmd[1] = 'H';
cmd[2] = val[0];
_api_at_cmd(dev, cmd, 3, &resp);
if (resp.status == 0) {
return 2;
}
return -EINVAL;
}
static int _set_panid(xbee_t *dev, uint8_t *val, size_t len)
{
uint8_t cmd[4];
resp_t resp;
if (len != 2) {
return -EINVAL;
}
cmd[0] = 'I';
cmd[1] = 'D';
cmd[2] = val[1];
cmd[3] = val[0];
_api_at_cmd(dev, cmd, 4, &resp);
if (resp.status == 0) {
return 2;
}
return -EINVAL;
}
static int _get_panid(xbee_t *dev, uint8_t *val, size_t max)
{
uint8_t cmd[2];
resp_t resp;
if (max < 2) {
return -EOVERFLOW;
}
cmd[0] = 'I';
cmd[1] = 'D';
_api_at_cmd(dev, cmd, 2, &resp);
if (resp.status == 0) {
val[0] = resp.data[1];
val[1] = resp.data[0];
return 2;
}
return -ECANCELED;
}
static int _get_addr_short(xbee_t *dev, uint8_t *val, size_t len)
{
uint8_t cmd[2];
resp_t resp;
if (len < 2) {
return -EOVERFLOW;
}
cmd[0] = 'M';
cmd[1] = 'Y';
_api_at_cmd(dev, cmd, 2, &resp);
if (resp.status == 0) {
memcpy(val, resp.data, 2);
return 2;
}
return -ECANCELED;
}
static int _set_encryption_key(xbee_t *dev, uint8_t *val, size_t len)
{
uint8_t cmd[18];
resp_t resp;
if (len != 16) { /* the AES key is 128bit, 16 byte */
return -EINVAL;
}
cmd[0] = 'K';
cmd[1] = 'Y';
for (int i = 0; i < 16; i++) { /* Append the key to the KY API AT command */
cmd[i + 2] = val[i];
}
_api_at_cmd(dev, cmd, 18, &resp);
if (resp.status == 0) {
return 2;
}
return -ECANCELED;
}