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feat(eppp): Add support for TUN interface

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* Implement factory pattern
* Make netif type configurable (PPP vs. TUN)
* Use ICMP for TUN netif connection
* Relax deps criteria (mainly for Ethernet)use the tun feature
This commit is contained in:
David Cermak committed 2025-06-12 11:59:17 +02:00
1 parent b8cdd373f4
commit 2ff150c310
22 files changed
+1531 -705
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components/eppp_link/examples/slave/main/Kconfig.projbuild
+59 -3
View File
@@ -18,10 +18,66 @@ menu "Example Configuration"
help
Set the Maximum retry to avoid station reconnecting to the AP unlimited when the AP is really inexistent.
config EXAMPLE_SPI_HOST
int "SPI Host"
depends on EPPP_LINK_DEVICE_SPI
default 1
range 0 2
help
SPI host to use (SPI1_HOST=0, SPI2_HOST=1, SPI3_HOST=2).
config EXAMPLE_SPI_MOSI_PIN
int "MOSI Pin Number"
depends on EPPP_LINK_DEVICE_SPI
default 23
range 0 39
help
Pin number of SPI MOSI.
config EXAMPLE_SPI_MISO_PIN
int "MISO Pin Number"
depends on EPPP_LINK_DEVICE_SPI
default 19
range 0 39
help
Pin number of SPI MISO.
config EXAMPLE_SPI_SCLK_PIN
int "SCLK Pin Number"
depends on EPPP_LINK_DEVICE_SPI
default 18
range 0 39
help
Pin number of SPI SCLK.
config EXAMPLE_SPI_CS_PIN
int "CS Pin Number"
depends on EPPP_LINK_DEVICE_SPI
default 5
range 0 39
help
Pin number of SPI CS.
config EXAMPLE_SPI_INTR_PIN
int "Interrupt Pin Number"
depends on EPPP_LINK_DEVICE_SPI
default 17
range 0 39
help
Pin number of SPI interrupt.
config EXAMPLE_SPI_FREQUENCY
int "SPI Frequency (Hz)"
depends on EPPP_LINK_DEVICE_SPI
default 1000000
range 100000 80000000
help
SPI frequency in Hz.
config EXAMPLE_UART_TX_PIN
int "TXD Pin Number"
depends on EPPP_LINK_DEVICE_UART
default 11
default 18
range 0 31
help
Pin number of UART TX.
@@ -29,7 +85,7 @@ menu "Example Configuration"
config EXAMPLE_UART_RX_PIN
int "RXD Pin Number"
depends on EPPP_LINK_DEVICE_UART
default 10
default 17
range 0 31
help
Pin number of UART RX.
@@ -37,7 +93,7 @@ menu "Example Configuration"
config EXAMPLE_UART_BAUDRATE
int "Baudrate"
depends on EPPP_LINK_DEVICE_UART
default 2000000
default 921600
range 0 4000000
help
Baudrate used by the PPP over UART
components/eppp_link/examples/slave/main/eppp_slave.c
+22 -17
View File
@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
@@ -55,9 +55,6 @@ void init_network_interface(void)
{
s_wifi_event_group = xEventGroupCreate();
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
esp_netif_create_default_wifi_sta();
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
@@ -66,15 +63,15 @@ void init_network_interface(void)
esp_event_handler_instance_t instance_any_id;
esp_event_handler_instance_t instance_got_ip;
ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
ESP_EVENT_ANY_ID,
&event_handler,
NULL,
&instance_any_id));
ESP_EVENT_ANY_ID,
&event_handler,
NULL,
&instance_any_id));
ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
IP_EVENT_STA_GOT_IP,
&event_handler,
NULL,
&instance_got_ip));
IP_EVENT_STA_GOT_IP,
&event_handler,
NULL,
&instance_got_ip));
wifi_config_t wifi_config = {
.sta = {
@@ -82,9 +79,9 @@ void init_network_interface(void)
.password = CONFIG_ESP_WIFI_PASSWORD,
},
};
ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config) );
ESP_ERROR_CHECK(esp_wifi_start() );
ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
ESP_ERROR_CHECK(esp_wifi_start());
ESP_LOGI(TAG, "wifi_init_sta finished.");
@@ -127,13 +124,21 @@ void app_main(void)
}
ESP_ERROR_CHECK(ret);
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
init_network_interface(); // WiFi station if withing SoC capabilities (otherwise a placeholder)
// ESP_ERROR_CHECK(esp_netif_init());
// ESP_ERROR_CHECK(esp_event_loop_create_default());
eppp_config_t config = EPPP_DEFAULT_SERVER_CONFIG();
#if CONFIG_EPPP_LINK_DEVICE_SPI
config.transport = EPPP_TRANSPORT_SPI;
config.spi.is_master = false;
config.spi.host = CONFIG_EXAMPLE_SPI_HOST;
config.spi.mosi = CONFIG_EXAMPLE_SPI_MOSI_PIN;
config.spi.miso = CONFIG_EXAMPLE_SPI_MISO_PIN;
config.spi.sclk = CONFIG_EXAMPLE_SPI_SCLK_PIN;
config.spi.cs = CONFIG_EXAMPLE_SPI_CS_PIN;
config.spi.intr = CONFIG_EXAMPLE_SPI_INTR_PIN;
config.spi.freq = CONFIG_EXAMPLE_SPI_FREQUENCY;
#elif CONFIG_EPPP_LINK_DEVICE_UART
config.transport = EPPP_TRANSPORT_UART;
config.uart.tx_io = CONFIG_EXAMPLE_UART_TX_PIN;