int xbee_init(netdev_t *dev)
{
uint8_t tmp[2];
xbee_t *xbee = (xbee_t *)dev;
/* set default options */
xbee->addr_flags = XBEE_ADDR_FLAGS_LONG;
xbee->options = 0;
/* initialize buffers and locks*/
mutex_init(&(xbee->tx_lock));
mutex_init(&(xbee->resp_lock));
xbee->resp_limit = 1; /* needs to be greater then 0 initially */
xbee->rx_count = 0;
/* initialize UART and GPIO pins */
if (uart_init(xbee->p.uart, xbee->p.br, _rx_cb, xbee) != UART_OK) {
DEBUG("[xbee] init: error initializing UART\n");
return -ENXIO;
}
/* if reset pin is connected, do a hardware reset */
if (xbee->p.pin_reset != GPIO_UNDEF) {
gpio_clear(xbee->p.pin_reset);
xtimer_usleep(RESET_DELAY);
gpio_set(xbee->p.pin_reset);
}
/* put the XBee device into command mode */
xtimer_usleep(ENTER_CMD_MODE_DELAY);
_at_cmd(xbee, "+++");
xtimer_usleep(ENTER_CMD_MODE_DELAY);
/* disable non IEEE802.15.4 extensions */
_at_cmd(xbee, "ATMM2\r");
/* put XBee module in "API mode without escaped characters" */
_at_cmd(xbee, "ATAP1\r");
/* apply AT commands */
_at_cmd(xbee, "ATAC\r");
/* exit command mode */
_at_cmd(xbee, "ATCN\r");
/* load long address (we can not set it, its read only for Xbee devices) */
if (_get_addr_long(xbee, xbee->addr_long.uint8, IEEE802154_LONG_ADDRESS_LEN) < 0) {
DEBUG("[xbee] init: error getting address\n");
return -EIO;
}
if (_set_addr(xbee, &((xbee->addr_long).uint8[6]), IEEE802154_SHORT_ADDRESS_LEN) < 0) {
DEBUG("[xbee] init: error setting short address\n");
return -EIO;
}
/* set default channel */
tmp[1] = 0;
tmp[0] = XBEE_DEFAULT_CHANNEL;
if (_set_channel(xbee, tmp, 2) < 0) {
DEBUG("[xbee] init: error setting channel\n");
return -EIO;
}
/* set default PAN ID */
tmp[1] = (uint8_t)(XBEE_DEFAULT_PANID >> 8);
tmp[0] = (uint8_t)(XBEE_DEFAULT_PANID & 0xff);
if (_set_panid(xbee, tmp, 2) < 0) {
DEBUG("[xbee] init: error setting PAN ID\n");
return -EIO;
}
DEBUG("[xbee] init: Initialization successful\n");
return 0;
}
/*
* Driver's "public" functions
*/
int xbee_init(xbee_t *dev, uart_t uart, uint32_t baudrate,
gpio_t reset_pin, gpio_t sleep_pin)
{
uint8_t tmp[2];
/* check device and bus parameters */
if (dev == NULL) {
return -ENODEV;
}
if (uart >= UART_NUMOF) {
return -ENXIO;
}
/* set device driver */
dev->driver = &xbee_driver;
/* set peripherals to use */
dev->uart = uart;
dev->reset_pin = reset_pin;
dev->sleep_pin = sleep_pin;
/* set default options */
dev->addr_flags = 0;
dev->proto = XBEE_DEFAULT_PROTOCOL;
dev->options = 0;
/* initialize buffers and locks*/
mutex_init(&(dev->tx_lock));
mutex_init(&(dev->resp_lock));
dev->resp_limit = 1; /* needs to be greater then 0 initially */
dev->rx_count = 0;
/* initialize UART and GPIO pins */
if (uart_init(uart, baudrate, _rx_cb, dev) < 0) {
DEBUG("xbee: Error initializing UART\n");
return -ENXIO;
}
if (reset_pin != GPIO_UNDEF) {
if (gpio_init(reset_pin, GPIO_DIR_OUT, GPIO_NOPULL) < 0) {
DEBUG("xbee: Error initializing RESET pin\n");
return -ENXIO;
}
gpio_set(reset_pin);
}
if (sleep_pin != GPIO_UNDEF) {
if (gpio_init(sleep_pin, GPIO_DIR_OUT, GPIO_NOPULL) < 0) {
DEBUG("xbee: Error initializing SLEEP pin\n");
return -ENXIO;
}
gpio_clear(sleep_pin);
}
/* if reset pin is connected, do a hardware reset */
if (reset_pin != GPIO_UNDEF) {
gpio_clear(reset_pin);
xtimer_usleep(RESET_DELAY);
gpio_set(reset_pin);
}
/* put the XBee device into command mode */
xtimer_usleep(ENTER_CMD_MODE_DELAY);
_at_cmd(dev, "+++");
xtimer_usleep(ENTER_CMD_MODE_DELAY);
/* disable non IEEE802.15.4 extensions */
_at_cmd(dev, "ATMM2\r");
/* put XBee module in "API mode without escaped characters" */
_at_cmd(dev, "ATAP1\r");
/* apply AT commands */
_at_cmd(dev, "ATAC\r");
/* exit command mode */
_at_cmd(dev, "ATCN\r");
/* load long address (we can not set it, its read only for Xbee devices) */
_get_addr_long(dev, dev->addr_long.uint8, 8);
/* set default channel */
_set_addr(dev, &((dev->addr_long).uint8[6]), 2);
tmp[1] = 0;
tmp[0] = XBEE_DEFAULT_CHANNEL;
_set_channel(dev, tmp, 2);
/* set default PAN ID */
tmp[1] = (uint8_t)(XBEE_DEFAULT_PANID >> 8);
tmp[0] = (uint8_t)(XBEE_DEFAULT_PANID & 0xff);
_set_panid(dev, tmp, 2);
DEBUG("xbee: Initialization successful\n");
return 0;
}
