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Merge pull request #10581 from TimoRoth/master

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esp_now: avoid parsing IPv6 header in netdev driver
This commit is contained in:
Martine Lenders 2018-12-29 14:08:38 +01:00 committed by GitHub
commit 5dda85f54d
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 556 additions and 348 deletions
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2
Makefile.dep
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@ -154,7 +154,7 @@ ifneq (,$(filter gnrc_netif,$(USEMODULE)))
endif
endif
ifneq (,$(filter ieee802154 nrfmin,$(USEMODULE)))
ifneq (,$(filter ieee802154 nrfmin esp_now,$(USEMODULE)))
ifneq (,$(filter gnrc_ipv6, $(USEMODULE)))
USEMODULE += gnrc_sixlowpan
endif

218
cpu/esp_common/esp-now/esp_now_gnrc.c Normal file
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@ -0,0 +1,218 @@
/*
* Copyright (C) 2018 Timo Rothenpieler
*
* 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 cpu_esp_common_esp_now
* @{
*
* @file
* @brief Netif interface for the ESP-NOW WiFi P2P protocol
*
* @author Timo Rothenpieler <timo.rothenpieler@uni-bremen.de>
*/
#include <assert.h>
#include <stdlib.h>
#include <sys/uio.h>
#include "net/netdev.h"
#include "net/gnrc.h"
#include "esp_now_params.h"
#include "esp_now_netdev.h"
#include "esp_now_gnrc.h"
#include "net/gnrc/netif.h"
#define ENABLE_DEBUG (0)
#include "debug.h"
static int _send(gnrc_netif_t *netif, gnrc_pktsnip_t *pkt)
{
uint8_t mac[ESP_NOW_ADDR_LEN];
esp_now_pkt_hdr_t esp_hdr;
netdev_t *dev = netif->dev;
assert(pkt != NULL);
if (pkt->type != GNRC_NETTYPE_NETIF) {
DEBUG("gnrc_esp_now: First header was not generic netif header\n");
gnrc_pktbuf_release(pkt);
return -EBADMSG;
}
gnrc_netif_hdr_t *netif_hdr = (gnrc_netif_hdr_t*)pkt->data;
gnrc_pktsnip_t *payload = pkt->next;
if (netif_hdr->flags & (GNRC_NETIF_HDR_FLAGS_BROADCAST | GNRC_NETIF_HDR_FLAGS_MULTICAST)) {
/* ESP-NOW does not support multicast, always broadcast */
memset(mac, 0xff, ESP_NOW_ADDR_LEN);
} else if (netif_hdr->dst_l2addr_len == ESP_NOW_ADDR_LEN) {
memcpy(mac, gnrc_netif_hdr_get_dst_addr(netif_hdr), ESP_NOW_ADDR_LEN);
} else {
DEBUG("gnrc_esp_now: destination address had unexpected format"
"(flags=%d, dst_l2addr_len=%d)\n", netif_hdr->flags, netif_hdr->dst_l2addr_len);
gnrc_pktbuf_release(pkt);
return -EBADMSG;
}
iolist_t esp_hdr_iolist = {
.iol_base = &esp_hdr,
.iol_len = sizeof(esp_hdr),
.iol_next = (iolist_t*)payload
};
iolist_t iolist = {
.iol_base = mac,
.iol_len = sizeof(mac),
.iol_next = &esp_hdr_iolist
};
switch (payload->type) {
#ifdef MODULE_GNRC_SIXLOWPAN
case GNRC_NETTYPE_SIXLOWPAN:
esp_hdr.flags = ESP_NOW_PKT_HDR_FLAG_SIXLO;
break;
#endif
default:
esp_hdr.flags = 0;
}
DEBUG("gnrc_esp_now: sending packet to %02x:%02x:%02x:%02x:%02x:%02x with size %u\n",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], (unsigned)payload->size);
int res = dev->driver->send(dev, &iolist);
gnrc_pktbuf_release(pkt);
return res;
}
static gnrc_pktsnip_t *_recv(gnrc_netif_t *netif)
{
netdev_t *dev = netif->dev;
esp_now_netdev_t *esp_now = (esp_now_netdev_t*)dev;
int bytes_expected = dev->driver->recv(dev, NULL, 0, NULL);
if (bytes_expected <= 0) {
DEBUG("gnrc_esp_now: failed receiving packet: %d\n", bytes_expected);
return NULL;
}
gnrc_pktsnip_t *pkt;
pkt = gnrc_pktbuf_add(NULL, NULL,
bytes_expected,
GNRC_NETTYPE_UNDEF);
if (!pkt) {
DEBUG("gnrc_esp_now: cannot allocate pktsnip.\n");
/* drop the packet */
dev->driver->recv(dev, NULL, bytes_expected, NULL);
return NULL;
}
int nread = dev->driver->recv(dev, pkt->data, bytes_expected, NULL);
if (nread <= 0) {
DEBUG("gnrc_esp_now: read error %d\n", nread);
goto err;
}
if (nread < bytes_expected) {
DEBUG("gnrc_esp_now: reallocating.\n");
gnrc_pktbuf_realloc_data(pkt, nread);
}
gnrc_pktsnip_t *mac_hdr;
mac_hdr = gnrc_pktbuf_mark(pkt, ESP_NOW_ADDR_LEN, GNRC_NETTYPE_UNDEF);
if (!mac_hdr) {
DEBUG("gnrc_esp_now: no space left in packet buffer\n");
goto err;
}
gnrc_pktsnip_t *esp_hdr;
esp_hdr = gnrc_pktbuf_mark(pkt, sizeof(esp_now_pkt_hdr_t), GNRC_NETTYPE_UNDEF);
if (!esp_hdr) {
DEBUG("gnrc_esp_now: no space left in packet buffer\n");
pkt = mac_hdr;
goto err;
}
esp_now_pkt_hdr_t *hdr = (esp_now_pkt_hdr_t*)esp_hdr->data;
#ifdef MODULE_L2FILTER
if (!l2filter_pass(dev->filter, mac_hdr->data, ESP_NOW_ADDR_LEN)) {
DEBUG("gnrc_esp_now: incoming packet filtered by l2filter\n");
pkt = mac_hdr;
goto err;
}
#endif
pkt->type = GNRC_NETTYPE_UNDEF;
#ifdef MODULE_GNRC_SIXLOWPAN
if (hdr->flags & ESP_NOW_PKT_HDR_FLAG_SIXLO) {
pkt->type = GNRC_NETTYPE_SIXLOWPAN;
}
#endif
gnrc_pktsnip_t *netif_hdr = gnrc_netif_hdr_build(mac_hdr->data, ESP_NOW_ADDR_LEN,
esp_now->addr, ESP_NOW_ADDR_LEN);
if (!netif_hdr) {
DEBUG("gnrc_esp_now: no space left in packet buffer\n");
pkt = mac_hdr;
goto err;
}
((gnrc_netif_hdr_t *)netif_hdr->data)->if_pid = netif->pid;
uint8_t *mac = mac_hdr->data;
DEBUG("gnrc_esp_now: received packet from %02x:%02x:%02x:%02x:%02x:%02x of length %u\n",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], pkt->size);
gnrc_pktbuf_remove_snip(pkt, mac_hdr);
gnrc_pktbuf_remove_snip(pkt, esp_hdr);
LL_APPEND(pkt, netif_hdr);
return pkt;
err:
gnrc_pktbuf_release(pkt);
return NULL;
}
static const gnrc_netif_ops_t _esp_now_ops = {
.send = _send,
.recv = _recv,
.get = gnrc_netif_get_from_netdev,
.set = gnrc_netif_set_from_netdev,
};
gnrc_netif_t *gnrc_netif_esp_now_create(char *stack, int stacksize, char priority,
char *name, netdev_t *dev)
{
return gnrc_netif_create(stack, stacksize, priority, name, dev, &_esp_now_ops);
}
/* device thread stack */
static char _esp_now_stack[ESP_NOW_STACKSIZE];
void auto_init_esp_now(void)
{
LOG_TAG_INFO("esp_now", "initializing ESP-NOW device\n");
esp_now_netdev_t *esp_now_dev = netdev_esp_now_setup();
if (!esp_now_dev) {
LOG_ERROR("[auto_init_netif] error initializing esp_now\n");
} else {
gnrc_netif_esp_now_create(_esp_now_stack, sizeof(_esp_now_stack),
ESP_NOW_PRIO,
"net-esp-now",
&esp_now_dev->netdev);
}
}
/** @} */

44
cpu/esp_common/esp-now/esp_now_gnrc.h Normal file
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@ -0,0 +1,44 @@
/*
* Copyright (C) 2018 Timo Rothenpieler
*
* 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 cpu_esp_common_esp_now
* @{
*
* @file
* @brief ESP-NOW adaption for @ref net_gnrc_netif
*
* @author Timo Rothenpieler <timo.rothenpieler@uni-bremen.de>
*/
#ifndef ESP_NOW_GNRC_H
#define ESP_NOW_GNRC_H
#include "net/gnrc/netif.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Creates the ESP-NOW network interface
* @see gnrc_netif_create
* @param [in] stack The stack for the network interface's thread.
* @param [in] stacksize Size of stack.
* @param [in] priority Priority for the network interface's thread.
* @param [in] name Name for the network interface. May be NULL.
* @param [in] dev Device for the interface.
*/
gnrc_netif_t *gnrc_netif_esp_now_create(char *stack, int stacksize, char priority,
char *name, netdev_t *dev);
#ifdef __cplusplus
}
#endif
#endif /* ESP_NOW_GNRC_H */
/** @} */

566
cpu/esp_common/esp-now/esp_now_netdev.c
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@ -14,12 +14,9 @@
* @brief Netdev interface for the ESP-NOW WiFi P2P protocol
*
* @author Gunar Schorcht <gunar@schorcht.net>
* @author Timo Rothenpieler <timo.rothenpieler@uni-bremen.de>
*/
#ifdef MODULE_ESP_NOW
#define ENABLE_DEBUG (0)
#include "debug.h"
#include "log.h"
#include "tools.h"
@ -27,7 +24,6 @@
#include <assert.h>
#include <errno.h>
#include "net/gnrc/netif/raw.h"
#include "net/gnrc.h"
#include "xtimer.h"
@ -38,19 +34,20 @@
#include "esp_system.h"
#include "esp_wifi.h"
#include "irq_arch.h"
#include "od.h"
#include "nvs_flash/include/nvs_flash.h"
#include "esp_now_params.h"
#include "esp_now_netdev.h"
#include "net/ipv6/hdr.h"
#include "net/gnrc/ipv6/nib.h"
#define ENABLE_DEBUG (0)
#include "debug.h"
#define ESP_NOW_UNICAST 1
#define ESP_NOW_UNICAST (1)
#define ESP_NOW_WIFI_STA 1
#define ESP_NOW_WIFI_SOFTAP 2
#define ESP_NOW_WIFI_STA (1)
#define ESP_NOW_WIFI_SOFTAP (2)
#define ESP_NOW_WIFI_STA_SOFTAP (ESP_NOW_WIFI_STA + ESP_NOW_WIFI_SOFTAP)
#define ESP_NOW_AP_PREFIX "RIOT_ESP_"
@ -62,34 +59,10 @@
* not provide an argument that could be used as pointer to the ESP-NOW
* device which triggers the interrupt.
*/
static esp_now_netdev_t _esp_now_dev;
static esp_now_netdev_t _esp_now_dev = { 0 };
static const netdev_driver_t _esp_now_driver;
/* device thread stack */
static char _esp_now_stack[ESP_NOW_STACKSIZE];
static inline int _get_mac_from_iid(uint8_t *iid, uint8_t *mac)
{
CHECK_PARAM_RET (iid != NULL, -EINVAL);
CHECK_PARAM_RET (mac != NULL, -EINVAL);
/* interface id according to */
/* https://tools.ietf.org/html/rfc4291#section-2.5.1 */
mac[0] = iid[0] ^ 0x02; /* invert bit1 */
mac[1] = iid[1];
mac[2] = iid[2];
mac[3] = iid[5];
mac[4] = iid[6];
mac[5] = iid[7];
return 0;
}
#if ESP_NOW_UNICAST
static xtimer_t _esp_now_scan_peers_timer;
static bool _esp_now_scan_peers_done = false;
static bool _esp_now_add_peer (uint8_t* bssid, uint8_t channel, uint8_t* key)
static bool _esp_now_add_peer(const uint8_t* bssid, uint8_t channel, uint8_t* key)
{
if (esp_now_is_peer_exist(bssid)) {
return false;
@ -113,12 +86,27 @@ static bool _esp_now_add_peer (uint8_t* bssid, uint8_t channel, uint8_t* key)
return (ret == ESP_OK);
}
#if ESP_NOW_UNICAST
static xtimer_t _esp_now_scan_peers_timer;
static bool _esp_now_scan_peers_done = false;
#define ESP_NOW_APS_BLOCK_SIZE 8 /* has to be power of two */
static wifi_ap_record_t* aps = NULL;
static uint32_t aps_size = 0;
static void IRAM_ATTR esp_now_scan_peers_done (void)
static const wifi_scan_config_t scan_cfg = {
.ssid = NULL,
.bssid = NULL,
.channel = ESP_NOW_CHANNEL,
.show_hidden = true,
.scan_type = WIFI_SCAN_TYPE_ACTIVE,
.scan_time.active.min = 0,
.scan_time.active.max = 120 /* TODO tune value */
};
static void IRAM_ATTR esp_now_scan_peers_done(void)
{
mutex_lock(&_esp_now_dev.dev_lock);
@ -154,9 +142,8 @@ static void IRAM_ATTR esp_now_scan_peers_done (void)
/* iterate over APs records */
for (uint16_t i = 0; i < ap_num; i++) {
/* check whether the AP is an ESP_NOW node which is not already a peer */
if (strncmp((char*)aps[i].ssid, ESP_NOW_AP_PREFIX, ESP_NOW_AP_PREFIX_LEN) == 0 &&
!esp_now_is_peer_exist(aps[i].bssid)) {
/* check whether the AP is an ESP_NOW node */
if (strncmp((char*)aps[i].ssid, ESP_NOW_AP_PREFIX, ESP_NOW_AP_PREFIX_LEN) == 0) {
/* add the AP as peer */
_esp_now_add_peer(aps[i].bssid, aps[i].primary, esp_now_params.key);
}
@ -164,63 +151,38 @@ static void IRAM_ATTR esp_now_scan_peers_done (void)
critical_exit_var(state);
}
#if ENABLE_DEBUG
#if ENABLE_DEBUG
esp_now_peer_num_t peer_num;
esp_now_get_peer_num (&peer_num);
esp_now_get_peer_num(&peer_num);
DEBUG("associated peers total=%d, encrypted=%d\n",
peer_num.total_num, peer_num.encrypt_num);
#endif
#endif
_esp_now_scan_peers_done = true;
/* set the time for next scan */
xtimer_set (&_esp_now_scan_peers_timer, esp_now_params.scan_period);
xtimer_set(&_esp_now_scan_peers_timer, esp_now_params.scan_period);
mutex_unlock(&_esp_now_dev.dev_lock);
}
static void esp_now_scan_peers_start (void)
static void esp_now_scan_peers_start(void)
{
DEBUG("%s\n", __func__);
wifi_scan_config_t scan_cfg = {
.ssid = NULL,
.bssid = NULL,
.channel = esp_now_params.channel,
.show_hidden = true,
.scan_type = WIFI_SCAN_TYPE_ACTIVE,
.scan_time.active.min = 0,
.scan_time.active.max = 120 /* TODO tune value */
};
esp_wifi_scan_start(&scan_cfg, false);
}
#define ESP_NOW_EVENT_SCAN_PEERS 1
static kernel_pid_t esp_now_event_handler_pid;
char esp_now_event_handler_stack [THREAD_STACKSIZE_DEFAULT];
static void *esp_now_event_handler (void *arg)
{
msg_t event;
while (1) {
msg_receive(&event);
switch (event.content.value) {
case ESP_NOW_EVENT_SCAN_PEERS:
esp_now_scan_peers_start ();
break;
}
}
return NULL;
}
static void IRAM_ATTR esp_now_scan_peers_timer_cb (void* arg)
static void IRAM_ATTR esp_now_scan_peers_timer_cb(void* arg)
{
DEBUG("%s\n", __func__);
static msg_t event = { .content = { .value = ESP_NOW_EVENT_SCAN_PEERS } };
msg_send(&event, esp_now_event_handler_pid);
esp_now_netdev_t* dev = (esp_now_netdev_t*)arg;
if (dev->netdev.event_callback) {
dev->scan_event = true;
dev->netdev.event_callback((netdev_t*)dev, NETDEV_EVENT_ISR);
}
}
#else
@ -229,44 +191,54 @@ static const uint8_t _esp_now_mac[6] = { 0x82, 0x73, 0x79, 0x84, 0x79, 0x83 }; /
#endif /* ESP_NOW_UNICAST */
static IRAM_ATTR void esp_now_recv_cb (const uint8_t *mac, const uint8_t *data, int len)
static IRAM_ATTR void esp_now_recv_cb(const uint8_t *mac, const uint8_t *data, int len)
{
#if ESP_NOW_UNICAST
#if ESP_NOW_UNICAST
if (!_esp_now_scan_peers_done) {
/* if peers are not scanned, we cannot receive anything */
return;
}
#endif
#endif
if (_esp_now_dev.rx_len) {
/* there is already a packet in receive buffer, we drop the new one */
mutex_lock(&_esp_now_dev.rx_lock);
critical_enter();
/*
* The ring buffer uses a single byte for the pkt length, followed by the mac address,
* followed by the actual packet data. The MTU for ESP-NOW is 250 bytes, so len will never
* exceed the limits of a byte as the mac address length is not included.
*/
if ((int)ringbuffer_get_free(&_esp_now_dev.rx_buf) < 1 + ESP_NOW_ADDR_LEN + len) {
critical_exit();
mutex_unlock(&_esp_now_dev.rx_lock);
DEBUG("%s: buffer full, dropping incoming packet of %d bytes\n", __func__, len);
return;
}
critical_enter();
#if 0 /* don't printf anything in ISR */
printf("%s\n", __func__);
printf("%s: received %d byte from %02x:%02x:%02x:%02x:%02x:%02x\n",
__func__, len,
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
od_hex_dump(data, len, OD_WIDTH_DEFAULT);
#endif
#if 0 /* don't printf anything in ISR */
printf ("%s\n", __func__);
printf ("%s: received %d byte from %02x:%02x:%02x:%02x:%02x:%02x\n",
__func__, len,
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
esp_hexdump (data, len, 'b', 16);
#endif
_esp_now_dev.rx_len = len;
memcpy(_esp_now_dev.rx_buf, data, len);
memcpy(_esp_now_dev.rx_mac, mac, ESP_NOW_ADDR_LEN);
ringbuffer_add_one(&_esp_now_dev.rx_buf, len);
ringbuffer_add(&_esp_now_dev.rx_buf, (char*)mac, ESP_NOW_ADDR_LEN);
ringbuffer_add(&_esp_now_dev.rx_buf, (char*)data, len);
if (_esp_now_dev.netdev.event_callback) {
_esp_now_dev.recv_event = true;
_esp_now_dev.netdev.event_callback((netdev_t*)&_esp_now_dev, NETDEV_EVENT_ISR);
}
critical_exit();
mutex_unlock(&_esp_now_dev.rx_lock);
}
static int _esp_now_sending = 0;
static volatile int _esp_now_sending = 0;
static void IRAM_ATTR esp_now_send_cb (const uint8_t *mac, esp_now_send_status_t status)
static void IRAM_ATTR esp_now_send_cb(const uint8_t *mac, esp_now_send_status_t status)
{
DEBUG("%s: sent to %02x:%02x:%02x:%02x:%02x:%02x with status %d\n",
__func__,
@ -288,7 +260,9 @@ static esp_err_t IRAM_ATTR _esp_system_event_handler(void *ctx, system_event_t *
break;
case SYSTEM_EVENT_SCAN_DONE:
DEBUG("%s WiFi scan done\n", __func__);
#if ESP_NOW_UNICAST
esp_now_scan_peers_done();
#endif
break;
default:
break;
@ -321,13 +295,20 @@ static esp_err_t IRAM_ATTR _esp_system_event_handler(void *ctx, system_event_t *
#define CONFIG_WIFI_AP_BEACON 100
#define CONFIG_WIFI_AP_MAX_CONN 4
extern esp_err_t esp_system_event_add_handler (system_event_cb_t handler,
void *arg);
extern esp_err_t esp_system_event_add_handler(system_event_cb_t handler,
void *arg);
static void esp_now_setup (esp_now_netdev_t* dev)
esp_now_netdev_t *netdev_esp_now_setup(void)
{
esp_now_netdev_t* dev = &_esp_now_dev;
DEBUG("%s: %p\n", __func__, dev);
if (dev->netdev.driver) {
DEBUG("%s: early returning previously initialized device\n", __func__);
return dev;
}
/*
* Init the WiFi driver. TODO It is not only required before ESP_NOW is
* initialized but also before other WiFi functions are used. Once other
@ -336,29 +317,31 @@ static void esp_now_setup (esp_now_netdev_t* dev)
extern portMUX_TYPE g_intr_lock_mux;
mutex_init(&g_intr_lock_mux);
esp_system_event_add_handler (_esp_system_event_handler, NULL);
ringbuffer_init(&dev->rx_buf, (char*)dev->rx_mem, sizeof(dev->rx_mem));
esp_system_event_add_handler(_esp_system_event_handler, NULL);
esp_err_t result;
#if CONFIG_ESP32_WIFI_NVS_ENABLED
#if CONFIG_ESP32_WIFI_NVS_ENABLED
result = nvs_flash_init();
if (result != ESP_OK) {
LOG_TAG_ERROR("esp_now",
"nfs_flash_init failed with return value %d\n", result);
return;
return NULL;
}
#endif
#endif
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
result = esp_wifi_init(&cfg);
if (result != ESP_OK) {
LOG_TAG_ERROR("esp_now",
"esp_wifi_init failed with return value %d\n", result);
return;
return NULL;
}
#ifdef CONFIG_WIFI_COUNTRY
#ifdef CONFIG_WIFI_COUNTRY
/* TODO */
#endif
#endif
/* we use predefined station configuration */
wifi_config_t wifi_config_sta = {
@ -398,7 +381,7 @@ static void esp_now_setup (esp_now_netdev_t* dev)
LOG_TAG_ERROR("esp_now",
"esp_wifi_set_mode failed with return value %d\n",
result);
return;
return NULL;
}
/* set the Station and SoftAP configuration */
@ -406,14 +389,14 @@ static void esp_now_setup (esp_now_netdev_t* dev)
if (result != ESP_OK) {
LOG_TAG_ERROR("esp_now", "esp_wifi_set_config station failed with "
"return value %d\n", result);
return;
return NULL;
}
result = esp_wifi_set_config(ESP_IF_WIFI_AP, &wifi_config_ap);
if (result != ESP_OK) {
LOG_TAG_ERROR("esp_now",
"esp_wifi_set_mode softap failed with return value %d\n",
result);
return;
return NULL;
}
/* start the WiFi driver */
@ -421,240 +404,146 @@ static void esp_now_setup (esp_now_netdev_t* dev)
if (result != ESP_OK) {
LOG_TAG_ERROR("esp_now",
"esp_wifi_start failed with return value %d\n", result);
return;
return NULL;
}
#if ESP_NOW_UNICAST==0 /* TODO */
#if !ESP_NOW_UNICAST
/* all ESP-NOW nodes get the shared mac address on their station interface */
wifi_set_macaddr(STATION_IF, (uint8_t*)_esp_now_mac);
#endif
esp_wifi_set_mac(ESP_IF_WIFI_STA, (uint8_t*)_esp_now_mac);
#endif
/* set the netdev driver */
dev->netdev.driver = &_esp_now_driver;
/* initialize netdev data structure */
dev->peers_all = 0;
dev->peers_enc = 0;
dev->recv_event = false;
dev->scan_event = false;
mutex_init(&dev->dev_lock);
mutex_init(&dev->rx_lock);
/* initialize ESP-NOW and register callback functions */
result = esp_now_init();
if (result != ESP_OK) {
LOG_TAG_ERROR("esp_now", "esp_now_init failed with return value %d\n",
result);
return;
return NULL;
}
esp_now_register_send_cb (esp_now_send_cb);
esp_now_register_recv_cb (esp_now_recv_cb);
#if ESP_NOW_UNICAST
/* create the ESP_NOW event handler thread */
esp_now_event_handler_pid = thread_create(esp_now_event_handler_stack,
sizeof(esp_now_event_handler_stack),
ESP_NOW_PRIO + 1,
THREAD_CREATE_WOUT_YIELD |
THREAD_CREATE_STACKTEST,
esp_now_event_handler,
NULL, "net-esp-now-event");
esp_now_register_send_cb(esp_now_send_cb);
esp_now_register_recv_cb(esp_now_recv_cb);
#if ESP_NOW_UNICAST
/* timer for peer scan initialization */
_esp_now_scan_peers_done = false;
_esp_now_scan_peers_timer.callback = &esp_now_scan_peers_timer_cb;
_esp_now_scan_peers_timer.arg = dev;
/* execute the first scan */
esp_now_scan_peers_done();
esp_now_scan_peers_start();
#else /* ESP_NOW_UNICAST */
#if 0
int res = esp_now_add_peer((uint8_t*)_esp_now_mac, ESP_NOW_ROLE_COMBO,
esp_now_params.channel, NULL, 0);
DEBUG("%s: multicast node added %d\n", __func__, res);
#endif
#endif /* ESP_NOW_UNICAST */
#else /* ESP_NOW_UNICAST */
bool res = _esp_now_add_peer(_esp_now_mac, esp_now_params.channel,
esp_now_params.key);
DEBUG("%s: multicast node add %s\n", __func__, res ? "success" : "error");
#endif /* ESP_NOW_UNICAST */
return dev;
}
static int _init(netdev_t *netdev)
{
DEBUG("%s: %p\n", __func__, netdev);
#ifdef MODULE_NETSTATS_L2
#ifdef MODULE_NETSTATS_L2
memset(&netdev->stats, 0x00, sizeof(netstats_t));
#endif
#endif
return 0;
}
static int _send(netdev_t *netdev, const iolist_t *iolist)
{
#if ESP_NOW_UNICAST
#if ESP_NOW_UNICAST
if (!_esp_now_scan_peers_done) {
return -ENODEV;
}
#endif
#endif
DEBUG("%s: %p %p\n", __func__, netdev, iolist);
CHECK_PARAM_RET (netdev != NULL, -ENODEV);
CHECK_PARAM_RET (iolist != NULL, -EINVAL);
CHECK_PARAM_RET(netdev != NULL, -ENODEV);
CHECK_PARAM_RET(iolist != NULL && iolist->iol_len == ESP_NOW_ADDR_LEN, -EINVAL);
CHECK_PARAM_RET(iolist->iol_next != NULL, -EINVAL);
esp_now_netdev_t* dev = (esp_now_netdev_t*)netdev;
esp_now_netdev_t *dev = (esp_now_netdev_t*)netdev;
mutex_lock(&dev->dev_lock);
dev->tx_len = 0;
/* load packet data into TX buffer */
for (const iolist_t *iol = iolist; iol; iol = iol->iol_next) {
if (dev->tx_len + iol->iol_len > ESP_NOW_MAX_SIZE) {
mutex_unlock(&dev->dev_lock);
return -EOVERFLOW;
}
memcpy (dev->tx_buf + dev->tx_len, iol->iol_base, iol->iol_len);
dev->tx_len += iol->iol_len;
}
#if ESP_NOW_UNICAST
uint8_t* _esp_now_dst = NULL;
#if ENABLE_DEBUG
printf ("%s: send %d byte\n", __func__, dev->tx_len);
/* esp_hexdump (dev->tx_buf, dev->tx_len, 'b', 16); */
#endif
_esp_now_sending = 1;
uint8_t* _esp_now_dst = 0;
#if ESP_NOW_UNICAST
ipv6_hdr_t* ipv6_hdr = (ipv6_hdr_t*)dev->tx_buf;
uint8_t _esp_now_dst_from_iid[6];
if (ipv6_hdr->dst.u8[0] == 0xff) {
/* packets to multicast prefix ff::/8 are sent to all peers */
DEBUG("multicast to all peers\n");
_esp_now_dst = 0;
_esp_now_sending = dev->peers_all;
#ifdef MODULE_NETSTATS_L2
netdev->stats.tx_mcast_count++;
#endif
}
else if ((byteorder_ntohs(ipv6_hdr->dst.u16[0]) & 0xffc0) == 0xfe80) {
/* for link local addresses fe80::/10, the MAC address is derived from dst address */
_get_mac_from_iid(&ipv6_hdr->dst.u8[8], _esp_now_dst_from_iid);
DEBUG("link local to %02x:%02x:%02x:%02x:%02x:%02x\n",
_esp_now_dst_from_iid[0], _esp_now_dst_from_iid[1],
_esp_now_dst_from_iid[2], _esp_now_dst_from_iid[3],
_esp_now_dst_from_iid[4], _esp_now_dst_from_iid[5]);
_esp_now_dst = _esp_now_dst_from_iid;
_esp_now_sending = 1;
}
else {
#ifdef MODULE_GNRC_IPV6_NIB
/* for other addresses, try to find an entry in NIB cache */
gnrc_ipv6_nib_nc_t nce;
int ret = gnrc_ipv6_nib_get_next_hop_l2addr (&ipv6_hdr->dst, dev->netif,
NULL, &nce);
if (ret == 0) {
/* entry was found in NIB, use MAC adress from the NIB cache entry */
DEBUG("global, next hop to neighbor %02x:%02x:%02x:%02x:%02x:%02x\n",
nce.l2addr[0], nce.l2addr[1], nce.l2addr[2],
nce.l2addr[3], nce.l2addr[4], nce.l2addr[5]);
_esp_now_dst = nce.l2addr;
_esp_now_sending = 1;
}
else {
#endif
/* entry was not found in NIB, send to all peers */
DEBUG("global, no neibhbor found, multicast to all peers\n");
_esp_now_dst = 0;
_esp_now_sending = dev->peers_all;
#ifdef MODULE_NETSTATS_L2
netdev->stats.tx_mcast_count++;
#endif
#ifdef MODULE_GNRC_IPV6_NIB
}
#endif
}
#else /* ESP_NOW_UNICAST */
ipv6_hdr_t* ipv6_hdr = (ipv6_hdr_t*)dev->tx_buf;
uint8_t _esp_now_dst_from_iid[6];
_esp_now_dst = (uint8_t*)_esp_now_mac;
_esp_now_sending = 1;
if (ipv6_hdr->dst.u8[0] == 0xff) {
/* packets to multicast prefix ff::/8 are sent to all peers */
DEBUG("multicast to all peers\n");
#ifdef MODULE_NETSTATS_L2
netdev->stats.tx_mcast_count++;
#endif
}
else if ((byteorder_ntohs(ipv6_hdr->dst.u16[0]) & 0xffc0) == 0xfe80) {
/* for link local addresses fe80::/10, the MAC address is derived from dst address */
_get_mac_from_iid(&ipv6_hdr->dst.u8[8], _esp_now_dst_from_iid);
DEBUG("link local to %02x:%02x:%02x:%02x:%02x:%02x\n",
_esp_now_dst_from_iid[0], _esp_now_dst_from_iid[1],
_esp_now_dst_from_iid[2], _esp_now_dst_from_iid[3],
_esp_now_dst_from_iid[4], _esp_now_dst_from_iid[5]);
if (esp_now_is_peer_exist(_esp_now_dst_from_iid) > 0) {
_esp_now_dst = _esp_now_dst_from_iid;
for (uint8_t i = 0; i < ESP_NOW_ADDR_LEN; i++) {
if (((uint8_t*)iolist->iol_base)[i] != 0xff) {
_esp_now_dst = iolist->iol_base;
break;
}
}
#else
const uint8_t* _esp_now_dst = _esp_now_mac;
#endif
iolist = iolist->iol_next;
else
{
/* for other addresses, try to find an entry in NIB cache */
gnrc_ipv6_nib_nc_t nce;
int ret = gnrc_ipv6_nib_get_next_hop_l2addr (&ipv6_hdr->dst, dev->netif,
NULL, &nce);
if (ret == 0 && esp_now_is_peer_exist(nce.l2addr) > 0) {
/* entry was found in NIB, use MAC adress from the NIB cache entry */
DEBUG("global, next hop to neighbor %02x:%02x:%02x:%02x:%02x:%02x\n",
nce.l2addr[0], nce.l2addr[1], nce.l2addr[2],
nce.l2addr[3], nce.l2addr[4], nce.l2addr[5]);
_esp_now_dst = nce.l2addr;
}
else {
/* entry was not found in NIB, send to all peers */
DEBUG("global, no neibhbor found, multicast to all peers\n");
uint8_t *data_pos = dev->tx_mem;
uint8_t data_len = 0;
#ifdef MODULE_NETSTATS_L2
netdev->stats.tx_mcast_count++;
#endif
while (iolist) {
if (((int)data_len + iolist->iol_len) > ESP_NOW_MAX_SIZE_RAW) {
DEBUG("%s: payload length exceeds maximum(%u>%u)\n", __func__,
data_len + iolist->iol_len, ESP_NOW_MAX_SIZE_RAW);
return -EBADMSG;
}
memcpy(data_pos, iolist->iol_base, iolist->iol_len);
data_pos += iolist->iol_len;
data_len += iolist->iol_len;
iolist = iolist->iol_next;
}
#endif /* ESP_NOW_UNICAST */
DEBUG("%s: send %u byte\n", __func__, (unsigned)data_len);
#if defined(MODULE_OD) && ENABLE_DEBUG
od_hex_dump(dev->tx_mem, data_len, OD_WIDTH_DEFAULT);
#endif
if (_esp_now_dst) {
DEBUG("%s: send to esp_now addr %02x:%02x:%02x:%02x:%02x:%02x\n", __func__,
_esp_now_dst[0], _esp_now_dst[1], _esp_now_dst[2],
_esp_now_dst[3], _esp_now_dst[4], _esp_now_dst[5]);
} else {
DEBUG("%s: send esp_now broadcast\n", __func__);
}
/* send the the packet to the peer(s) mac address */
if (esp_now_send (_esp_now_dst, dev->tx_buf, dev->tx_len) == 0) {
_esp_now_sending = 1;
/* send the packet to the peer(s) mac address */
if (esp_now_send(_esp_now_dst, dev->tx_mem, data_len) == ESP_OK) {
while (_esp_now_sending > 0) {
thread_yield_higher();
}
#ifdef MODULE_NETSTATS_L2
netdev->stats.tx_bytes += dev->tx_len;
#ifdef MODULE_NETSTATS_L2
netdev->stats.tx_bytes += data_len;
netdev->event_callback(netdev, NETDEV_EVENT_TX_COMPLETE);
#endif
#endif
mutex_unlock(&dev->dev_lock);
return dev->tx_len;
}
else {
#ifdef MODULE_NETSTATS_L2
return data_len;
} else {
_esp_now_sending = 0;
#ifdef MODULE_NETSTATS_L2
netdev->stats.tx_failed++;
#endif
#endif
}
mutex_unlock(&dev->dev_lock);
@ -665,65 +554,84 @@ static int _recv(netdev_t *netdev, void *buf, size_t len, void *info)
{
DEBUG("%s: %p %p %u %p\n", __func__, netdev, buf, len, info);
CHECK_PARAM_RET (netdev != NULL, -ENODEV);
CHECK_PARAM_RET(netdev != NULL, -ENODEV);
esp_now_netdev_t* dev = (esp_now_netdev_t*)netdev;
mutex_lock(&dev->dev_lock);
mutex_lock(&dev->rx_lock);
uint8_t size = dev->rx_len;
uint16_t size = ringbuffer_empty(&dev->rx_buf)
? 0
: (ringbuffer_peek_one(&dev->rx_buf) + ESP_NOW_ADDR_LEN);
if (size && dev->rx_buf.avail < size) {
/* this should never happen unless this very function messes up */
mutex_unlock(&dev->rx_lock);
return -EIO;
}
if (!buf && !len) {
/* return the size without dropping received data */
mutex_unlock(&dev->dev_lock);
mutex_unlock(&dev->rx_lock);
return size;
}
if (!buf && len) {
/* return the size and drop received data */
mutex_unlock(&dev->dev_lock);
dev->rx_len = 0;
if (size) {
ringbuffer_remove(&dev->rx_buf, 1 + size);
}
mutex_unlock(&dev->rx_lock);
return size;
}
if (buf && len && dev->rx_len) {
if (dev->rx_len > len) {
if (buf && len && !size) {
mutex_unlock(&dev->rx_lock);
return 0;
}
if (buf && len && size) {
if (size > len) {
DEBUG("[esp_now] No space in receive buffers\n");
mutex_unlock(&dev->dev_lock);
mutex_unlock(&dev->rx_lock);
return -ENOBUFS;
}
#if ENABLE_DEBUG
printf ("%s: received %d byte from %02x:%02x:%02x:%02x:%02x:%02x\n",
__func__, dev->rx_len,
dev->rx_mac[0], dev->rx_mac[1], dev->rx_mac[2],
dev->rx_mac[3], dev->rx_mac[4], dev->rx_mac[5]);
/* esp_hexdump (dev->rx_buf, dev->rx_len, 'b', 16); */
#endif
/* remove already peeked size byte */
ringbuffer_remove(&dev->rx_buf, 1);
ringbuffer_get(&dev->rx_buf, buf, size);
if (esp_now_is_peer_exist(dev->rx_mac) <= 0) {
_esp_now_add_peer(dev->rx_mac, esp_now_params.channel, esp_now_params.key);
uint8_t *mac = buf;
DEBUG("%s: received %d byte from %02x:%02x:%02x:%02x:%02x:%02x\n",
__func__, size - ESP_NOW_ADDR_LEN,
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
#if defined(MODULE_OD) && ENABLE_DEBUG
od_hex_dump(buf + ESP_NOW_ADDR_LEN, size - ESP_NOW_ADDR_LEN, OD_WIDTH_DEFAULT);
#endif
#if ESP_NOW_UNICAST
if (esp_now_is_peer_exist(mac) <= 0) {
_esp_now_add_peer(mac, esp_now_params.channel, esp_now_params.key);
}
#endif
memcpy(buf, dev->rx_buf, dev->rx_len);
dev->rx_len = 0;
#ifdef MODULE_NETSTATS_L2
#ifdef MODULE_NETSTATS_L2
netdev->stats.rx_count++;
netdev->stats.rx_bytes += size;
#endif
#endif
mutex_unlock(&dev->dev_lock);
mutex_unlock(&dev->rx_lock);
return size;
}
mutex_unlock(&dev->dev_lock);
mutex_unlock(&dev->rx_lock);
return -EINVAL;
}
static inline int _get_iid(esp_now_netdev_t *dev, eui64_t *value, size_t max_len)
{
CHECK_PARAM_RET (max_len >= sizeof(eui64_t), -EOVERFLOW);
CHECK_PARAM_RET(max_len >= sizeof(eui64_t), -EOVERFLOW);
/* interface id according to */
/* https://tools.ietf.org/html/rfc4291#section-2.5.1 */
@ -743,43 +651,43 @@ static int _get(netdev_t *netdev, netopt_t opt, void *val, size_t max_len)
{
DEBUG("%s: %s %p %p %u\n", __func__, netopt2str(opt), netdev, val, max_len);
CHECK_PARAM_RET (netdev != NULL, -ENODEV);
CHECK_PARAM_RET (val != NULL, -EINVAL);
CHECK_PARAM_RET(netdev != NULL, -ENODEV);
CHECK_PARAM_RET(val != NULL, -EINVAL);
esp_now_netdev_t *dev = (esp_now_netdev_t *)netdev;
esp_now_netdev_t *dev = (esp_now_netdev_t*)netdev;
int res = -ENOTSUP;
switch (opt) {
case NETOPT_DEVICE_TYPE:
CHECK_PARAM_RET (max_len >= sizeof(uint16_t), -EOVERFLOW);
CHECK_PARAM_RET(max_len >= sizeof(uint16_t), -EOVERFLOW);
*((uint16_t *)val) = NETDEV_TYPE_ESP_NOW;
res = sizeof(uint16_t);
break;
#ifdef MODULE_GNRC
#ifdef MODULE_GNRC
case NETOPT_PROTO:
CHECK_PARAM_RET(max_len == sizeof(gnrc_nettype_t), -EOVERFLOW);
*((gnrc_nettype_t *)val) = dev->proto;
res = sizeof(gnrc_nettype_t);
break;
#endif
#endif
case NETOPT_MAX_PACKET_SIZE:
CHECK_PARAM_RET (max_len >= sizeof(uint16_t), -EOVERFLOW);
CHECK_PARAM_RET(max_len >= sizeof(uint16_t), -EOVERFLOW);
*((uint16_t *)val) = ESP_NOW_MAX_SIZE;
res = sizeof(uint16_t);
break;
case NETOPT_ADDR_LEN:
case NETOPT_SRC_LEN:
CHECK_PARAM_RET (max_len >= sizeof(uint16_t), -EOVERFLOW);
CHECK_PARAM_RET(max_len >= sizeof(uint16_t), -EOVERFLOW);
*((uint16_t *)val) = sizeof(dev->addr);
res = sizeof(uint16_t);
break;
case NETOPT_ADDRESS:
CHECK_PARAM_RET (max_len >= sizeof(dev->addr), -EOVERFLOW);
CHECK_PARAM_RET(max_len >= sizeof(dev->addr), -EOVERFLOW);
memcpy(val, dev->addr, sizeof(dev->addr));
res = sizeof(dev->addr);
break;
@ -788,13 +696,13 @@ static int _get(netdev_t *netdev, netopt_t opt, void *val, size_t max_len)
res = _get_iid(dev, val, max_len);
break;
#ifdef MODULE_NETSTATS_L2
#ifdef MODULE_NETSTATS_L2
case NETOPT_STATS:
CHECK_PARAM_RET (max_len == sizeof(uintptr_t), -EOVERFLOW);
CHECK_PARAM_RET(max_len == sizeof(uintptr_t), -EOVERFLOW);
*((netstats_t **)val) = &netdev->stats;
res = sizeof(uintptr_t);
break;
#endif
#endif
default:
DEBUG("%s: %s not supported\n", __func__, netopt2str(opt));
@ -807,21 +715,21 @@ static int _set(netdev_t *netdev, netopt_t opt, const void *val, size_t max_len)
{
DEBUG("%s: %s %p %p %u\n", __func__, netopt2str(opt), netdev, val, max_len);
CHECK_PARAM_RET (netdev != NULL, -ENODEV);
CHECK_PARAM_RET (val != NULL, -EINVAL);
CHECK_PARAM_RET(netdev != NULL, -ENODEV);
CHECK_PARAM_RET(val != NULL, -EINVAL);
esp_now_netdev_t *dev = (esp_now_netdev_t *) netdev;
int res = -ENOTSUP;
switch (opt) {
#ifdef MODULE_GNRC
#ifdef MODULE_GNRC
case NETOPT_PROTO:
CHECK_PARAM_RET(max_len == sizeof(gnrc_nettype_t), -EOVERFLOW);
dev->proto = *((gnrc_nettype_t *)val);
res = sizeof(gnrc_nettype_t);
break;
#endif
#endif
case NETOPT_ADDRESS:
CHECK_PARAM_RET(max_len >= sizeof(dev->addr), -EOVERFLOW);
@ -840,10 +748,18 @@ static void _isr(netdev_t *netdev)
{
DEBUG("%s: %p\n", __func__, netdev);
CHECK_PARAM (netdev != NULL);
CHECK_PARAM(netdev != NULL);
esp_now_netdev_t *dev = (esp_now_netdev_t *) netdev;
dev->netdev.event_callback(netdev, NETDEV_EVENT_RX_COMPLETE);
esp_now_netdev_t *dev = (esp_now_netdev_t*)netdev;
if (dev->recv_event) {
dev->recv_event = false;
dev->netdev.event_callback(netdev, NETDEV_EVENT_RX_COMPLETE);
}
else if (dev->scan_event) {
dev->scan_event = false;
esp_now_scan_peers_start();
}
return;
}
@ -857,16 +773,4 @@ static const netdev_driver_t _esp_now_driver =
.set = _set,
};
void auto_init_esp_now (void)
{
LOG_TAG_INFO("esp_now", "initializing ESP-NOW device\n");
esp_now_setup(&_esp_now_dev);
_esp_now_dev.netif = gnrc_netif_raw_create(_esp_now_stack,
ESP_NOW_STACKSIZE, ESP_NOW_PRIO,
"net-esp-now",
(netdev_t *)&_esp_now_dev);
}
#endif /* MODULE_ESP_NOW */
/** @} */

69
cpu/esp_common/esp-now/esp_now_netdev.h
View File

@ -14,32 +14,67 @@
* @brief Netdev interface for the ESP-NOW WiFi P2P protocol
*
* @author Gunar Schorcht <gunar@schorcht.net>
* @author Timo Rothenpieler <timo.rothenpieler@uni-bremen.de>
*/
#ifndef ESP_NOW_NETDEV_H
#define ESP_NOW_NETDEV_H
#include "net/netdev.h"
#include "ringbuffer.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Maximum packet size that can be used with ESP-NOW
* @brief Maximum raw packet size that can be used with ESP-NOW (including headers)
*/
#define ESP_NOW_MAX_SIZE (250)
#define ESP_NOW_MAX_SIZE_RAW (250)
/**
* @brief Length of ESP-NOW addresses
*/
#define ESP_NOW_ADDR_LEN ETHERNET_ADDR_LEN
/**
* @brief Size of non-data header elements in ESP-NOW packet
*/
#define ESP_NOW_HEADER_LENGTH (sizeof(esp_now_pkt_hdr_t))
/**
* @brief Maximum packet size that can be used with ESP-NOW
*/
#define ESP_NOW_MAX_SIZE (ESP_NOW_MAX_SIZE_RAW - ESP_NOW_HEADER_LENGTH)
/**
* @brief buffer size used for RX buffering
*
* Reduce this value if your expected traffic does not include full IPv6 MTU
* sized packets.
*/
#ifndef ESP_NOW_BUFSIZE
#define ESP_NOW_BUFSIZE (1500)
#endif
/**
* @brief Reference to the netdev device driver struct
*/
extern const netdev_driver_t esp_now_driver;
/**
* @brief Header with neccesary flags for ESP-NOW packets
*/
typedef struct __attribute__((packed))
{
uint8_t flags; /**< Flags */
} esp_now_pkt_hdr_t;
/**
* @brief Packet is carrying 6Lo data
*/
#define ESP_NOW_PKT_HDR_FLAG_SIXLO (1)
/**
* @brief Device descriptor for ESP-NOW devices
*/
@ -47,28 +82,32 @@ typedef struct
{
netdev_t netdev; /**< netdev parent struct */
uint8_t addr[ESP_NOW_ADDR_LEN]; /**< device addr (MAC address) */
uint8_t addr[ESP_NOW_ADDR_LEN]; /**< device addr (MAC address) */
uint8_t rx_len; /**< number of bytes received */
uint8_t rx_buf[ESP_NOW_MAX_SIZE]; /**< receive buffer */
uint8_t rx_mac[ESP_NOW_ADDR_LEN]; /**< source address */
uint8_t rx_mem[ESP_NOW_BUFSIZE]; /**< memory holding incoming packages */
ringbuffer_t rx_buf; /**< ringbuffer for incoming packages */
uint8_t tx_len; /**< number of bytes in transmit buffer */
uint8_t tx_buf[ESP_NOW_MAX_SIZE]; /**< transmit buffer */
uint8_t tx_mem[ESP_NOW_MAX_SIZE_RAW]; /**< memory holding outgoing package */
gnrc_netif_t* netif; /**< reference to the corresponding netif */
#ifdef MODULE_GNRC
#ifdef MODULE_GNRC
gnrc_nettype_t proto; /**< protocol for upper layer */
#endif
uint8_t peers_all; /**< number of peers reachable */
uint8_t peers_enc; /**< number of encrypted peers */
#endif
mutex_t dev_lock; /**< device is already in use */
mutex_t rx_lock; /**< rx_buf handling in progress */
bool recv_event; /**< ESP-NOW frame received */
bool scan_event; /**< ESP-NOW peers have to be scannged */
} esp_now_netdev_t;
/**
* @brief netdev <-> esp_npw glue code initialization function
*
* @return NULL on error, pointer to esp_now_netdev on success
*/
esp_now_netdev_t *netdev_esp_now_setup(void);
#ifdef __cplusplus
}
#endif

5
sys/net/gnrc/netif/gnrc_netif.c
View File

@ -1112,6 +1112,7 @@ bool gnrc_netif_is_6ln(const gnrc_netif_t *netif)
case NETDEV_TYPE_CC110X:
case NETDEV_TYPE_BLE:
case NETDEV_TYPE_NRFMIN:
case NETDEV_TYPE_ESP_NOW:
return true;
default:
return false;
@ -1170,12 +1171,14 @@ static void _init_from_device(gnrc_netif_t *netif)
assert(res == sizeof(tmp));
netif->device_type = (uint8_t)tmp;
switch (netif->device_type) {
#if defined(MODULE_NETDEV_IEEE802154) || defined(MODULE_NRFMIN) || defined(MODULE_XBEE)
#if defined(MODULE_NETDEV_IEEE802154) || defined(MODULE_NRFMIN) || defined(MODULE_XBEE) || defined(MODULE_ESP_NOW)
case NETDEV_TYPE_IEEE802154:
case NETDEV_TYPE_NRFMIN:
#ifdef MODULE_GNRC_SIXLOWPAN_IPHC
netif->flags |= GNRC_NETIF_FLAGS_6LO_HC;
#endif
/* intentionally falls through */
case NETDEV_TYPE_ESP_NOW:
#ifdef MODULE_GNRC_IPV6
res = dev->driver->get(dev, NETOPT_MAX_PACKET_SIZE, &tmp, sizeof(tmp));
assert(res == sizeof(tmp));