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enc28j60: fix stability of the ENC28J60 Ethernet driver example

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Resolved possible race conditions when accessing registers in different banks.

Added Tx ready semaphore when requesting packet to transmit (ENC is slow => access to it needs to be controlled).

Added setting of CS hold time based on Data sheet.

Added option to set the ENC28J60 to Full Duplex mode.

Addressed several ENC28J60 Erratas.

Restructured ENC28J60 example folder structure so the driver could be easily linked from different projects.

Extended the README to guide users of how to properly use the ENC28J60 chip.

Extended iperf example to include ENC28J60.

Closes https://github.com/espressif/esp-idf/issues/4747
Closes https://github.com/espressif/esp-idf/issues/7117
Closes https://github.com/espressif/esp-idf/issues/7156
This commit is contained in:
Ondrej Kosta
2021-07-06 08:14:55 +02:00
parent 38633699f1
commit ae2da1e235
14 changed files with 526 additions and 104 deletions
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32
examples/ethernet/iperf/main/cmd_ethernet.c
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@@ -21,6 +21,9 @@
#include "sdkconfig.h"
#if CONFIG_ETH_USE_SPI_ETHERNET
#include "driver/spi_master.h"
#if CONFIG_EXAMPLE_USE_ENC28J60
#include "esp_eth_enc28j60.h"
#endif //CONFIG_EXAMPLE_USE_ENC28J60
#endif // CONFIG_ETH_USE_SPI_ETHERNET
static esp_netif_ip_info_t ip;
@@ -218,7 +221,7 @@ void register_ethernet(void)
.quadwp_io_num = -1,
.quadhd_io_num = -1,
};
ESP_ERROR_CHECK(spi_bus_initialize(CONFIG_EXAMPLE_ETH_SPI_HOST, &buscfg, 1));
ESP_ERROR_CHECK(spi_bus_initialize(CONFIG_EXAMPLE_ETH_SPI_HOST, &buscfg, SPI_DMA_CH_AUTO));
#if CONFIG_EXAMPLE_USE_DM9051
spi_device_interface_config_t devcfg = {
.command_bits = 1,
@@ -249,6 +252,29 @@ void register_ethernet(void)
w5500_config.int_gpio_num = CONFIG_EXAMPLE_ETH_SPI_INT_GPIO;
esp_eth_mac_t *mac = esp_eth_mac_new_w5500(&w5500_config, &mac_config);
esp_eth_phy_t *phy = esp_eth_phy_new_w5500(&phy_config);
#elif CONFIG_EXAMPLE_USE_ENC28J60
/* ENC28J60 ethernet driver is based on spi driver */
spi_device_interface_config_t devcfg = {
.command_bits = 3,
.address_bits = 5,
.mode = 0,
.clock_speed_hz = CONFIG_EXAMPLE_ETH_SPI_CLOCK_MHZ * 1000 * 1000,
.spics_io_num = CONFIG_EXAMPLE_ETH_SPI_CS_GPIO,
.queue_size = 20,
.cs_ena_posttrans = enc28j60_cal_spi_cs_hold_time(CONFIG_EXAMPLE_ETH_SPI_CLOCK_MHZ)
};
ESP_ERROR_CHECK(spi_bus_add_device(CONFIG_EXAMPLE_ETH_SPI_HOST, &devcfg, &spi_handle));
eth_enc28j60_config_t enc28j60_config = ETH_ENC28J60_DEFAULT_CONFIG(spi_handle);
enc28j60_config.int_gpio_num = CONFIG_EXAMPLE_ETH_SPI_INT_GPIO;
mac_config.smi_mdc_gpio_num = -1; // ENC28J60 doesn't have SMI interface
mac_config.smi_mdio_gpio_num = -1;
esp_eth_mac_t *mac = esp_eth_mac_new_enc28j60(&enc28j60_config, &mac_config);
phy_config.autonego_timeout_ms = 0; // ENC28J60 doesn't support auto-negotiation
phy_config.reset_gpio_num = -1; // ENC28J60 doesn't have a pin to reset internal PHY
esp_eth_phy_t *phy = esp_eth_phy_new_enc28j60(&phy_config);
#endif
#endif // CONFIG_ETH_USE_SPI_ETHERNET
esp_eth_config_t config = ETH_DEFAULT_CONFIG(mac, phy);
@@ -264,6 +290,10 @@ void register_ethernet(void)
ESP_ERROR_CHECK(esp_netif_attach(eth_netif, esp_eth_new_netif_glue(eth_handle)));
ESP_ERROR_CHECK(esp_eth_start(eth_handle));
#if CONFIG_EXAMPLE_USE_ENC28J60 && CONFIG_EXAMPLE_ENC28J60_DUPLEX_FULL
enc28j60_set_phy_duplex(phy, ETH_DUPLEX_FULL);
#endif
eth_control_args.control = arg_str1(NULL, NULL, "<info>", "Get info of Ethernet");
eth_control_args.end = arg_end(1);
const esp_console_cmd_t cmd = {