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/*
* Copyright (C) 2014 Freie Universität Berlin
* 2015 Kaspar Schleiser <kaspar@schleiser.de>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup drivers_cc110x
* @{
* @file
* @brief Implementation of netdev interface for cc110x
*
* @author Fabian Nack <nack@inf.fu-berlin.de>
* @author Kaspar Schleiser <kaspar@schleiser.de>
* @}
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "cc110x.h"
#include "cc110x-netdev.h"
#include "cc110x-internal.h"
#include "cc110x-interface.h"
#include "net/eui64.h"
#include "periph/gpio.h"
#include "net/netdev.h"
#include "net/gnrc/nettype.h"
#define ENABLE_DEBUG (0)
#include "debug.h"
static int _send(netdev_t *dev, const struct iovec *vector, unsigned count)
{
DEBUG("%s:%u\n", __func__, __LINE__);
netdev_cc110x_t *netdev_cc110x = (netdev_cc110x_t*) dev;
cc110x_pkt_t *cc110x_pkt = vector[0].iov_base;
return cc110x_send(&netdev_cc110x->cc110x, cc110x_pkt);
}
static int _recv(netdev_t *dev, void *buf, size_t len, void *info)
{
DEBUG("%s:%u\n", __func__, __LINE__);
cc110x_t *cc110x = &((netdev_cc110x_t*) dev)->cc110x;
cc110x_pkt_t *cc110x_pkt = &cc110x->pkt_buf.packet;
if (cc110x_pkt->length > len) {
return -ENOSPC;
}
memcpy(buf, (void*)cc110x_pkt, cc110x_pkt->length);
if (info != NULL) {
netdev_cc110x_rx_info_t *cc110x_info = info;
cc110x_info->rssi = cc110x->pkt_buf.rssi;
cc110x_info->lqi = cc110x->pkt_buf.lqi;
}
return cc110x_pkt->length;
}
static inline int _get_iid(netdev_t *netdev, eui64_t *value, size_t max_len)
{
cc110x_t *cc110x = &((netdev_cc110x_t*) netdev)->cc110x;
uint8_t *eui64 = (uint8_t*) value;
if (max_len < sizeof(eui64_t)) {
return -EOVERFLOW;
}
/* make address compatible to https://tools.ietf.org/html/rfc6282#section-3.2.2*/
memset(eui64, 0, sizeof(eui64_t));
eui64[3] = 0xff;
eui64[4] = 0xfe;
eui64[7] = cc110x->radio_address;
return sizeof(eui64_t);
}
static int _get(netdev_t *dev, netopt_t opt, void *value, size_t value_len)
{
cc110x_t *cc110x = &((netdev_cc110x_t*) dev)->cc110x;
switch (opt) {
case NETOPT_DEVICE_TYPE:
assert(value_len == 2);
*((uint16_t *) value) = NETDEV_TYPE_CC110X;
return 2;
#ifdef MODULE_GNRC_NETIF
case NETOPT_PROTO:
assert(value_len == sizeof(gnrc_nettype_t));
*((gnrc_nettype_t *)value) = cc110x->proto;
return sizeof(gnrc_nettype_t);
#endif
case NETOPT_CHANNEL:
assert(value_len > 1);
*((uint16_t *)value) = (uint16_t)cc110x->radio_channel;
return 2;
case NETOPT_ADDRESS:
assert(value_len > 0);
*((uint8_t *)value) = cc110x->radio_address;
return 1;
case NETOPT_MAX_PACKET_SIZE:
assert(value_len > 0);
*((uint8_t *)value) = CC110X_PACKET_LENGTH;
return 1;
case NETOPT_IPV6_IID:
return _get_iid(dev, value, value_len);
default:
break;
}
return -ENOTSUP;
}
static int _set(netdev_t *dev, netopt_t opt, void *value, size_t value_len)
{
cc110x_t *cc110x = &((netdev_cc110x_t*) dev)->cc110x;
switch (opt) {
case NETOPT_CHANNEL:
{
uint8_t *arg = (uint8_t*)value;
uint8_t channel = arg[value_len-1];
if ((channel < CC110X_MIN_CHANNR) || (channel > CC110X_MAX_CHANNR)) {
return -EINVAL;
}
if (cc110x_set_channel(cc110x, channel) == -1) {
return -EINVAL;
}
return 1;
}
case NETOPT_ADDRESS:
if (value_len < 1) {
return -EINVAL;
}
if (!cc110x_set_address(cc110x, *(uint8_t*)value)) {
return -EINVAL;
}
return 1;
#ifdef MODULE_GNRC_NETIF
case NETOPT_PROTO:
if (value_len != sizeof(gnrc_nettype_t)) {
return -EINVAL;
}
else {
cc110x->proto = (gnrc_nettype_t) value;
return sizeof(gnrc_nettype_t);
}
break;
#endif
default:
return -ENOTSUP;
}
return 0;
}
static void _netdev_cc110x_isr(void *arg)
{
netdev_t *netdev = (netdev_t*) arg;
netdev->event_callback(netdev, NETDEV_EVENT_ISR);
}
static void _netdev_cc110x_rx_callback(void *arg)
{
netdev_t *netdev = (netdev_t*) arg;
cc110x_t *cc110x = &((netdev_cc110x_t*) arg)->cc110x;
gpio_irq_disable(cc110x->params.gdo2);
netdev->event_callback(netdev, NETDEV_EVENT_RX_COMPLETE);
}
static void _isr(netdev_t *dev)
{
cc110x_t *cc110x = &((netdev_cc110x_t*) dev)->cc110x;
cc110x_isr_handler(cc110x, _netdev_cc110x_rx_callback, (void*)dev);
}
static int _init(netdev_t *dev)
{
DEBUG("%s:%u\n", __func__, __LINE__);
cc110x_t *cc110x = &((netdev_cc110x_t*) dev)->cc110x;
gpio_init_int(cc110x->params.gdo2, GPIO_IN, GPIO_BOTH,
&_netdev_cc110x_isr, (void*)dev);
gpio_set(cc110x->params.gdo2);
gpio_irq_disable(cc110x->params.gdo2);
/* Switch to RX mode */
cc110x_rd_set_mode(cc110x, RADIO_MODE_ON);
return 0;
}
const netdev_driver_t netdev_cc110x_driver = {
.send=_send,
.recv=_recv,
.init=_init,
.get=_get,
.set=_set,
.isr=_isr
};
int netdev_cc110x_setup(netdev_cc110x_t *netdev_cc110x, const cc110x_params_t *params)
{
DEBUG("netdev_cc110x_setup()\n");
netdev_cc110x->netdev.driver = &netdev_cc110x_driver;
/* set default protocol */
#ifdef MODULE_GNRC_NETIF
# ifdef MODULE_GNRC_SIXLOWPAN
netdev_cc110x->cc110x.proto = GNRC_NETTYPE_SIXLOWPAN;
# else
netdev_cc110x->cc110x.proto = GNRC_NETTYPE_UNDEF;
# endif
#endif
return cc110x_setup(&netdev_cc110x->cc110x, params);
}