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Updated Ethernet README Common Troubleshooting to describe workaround when SPI issues are observed with internal EMAC connected

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This commit is contained in:
Ondrej Kosta
2023-05-16 16:45:41 +02:00
parent 0cccbc39a3
commit a2d669c008
5 changed files with 15 additions and 64 deletions
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11
examples/ethernet/basic/components/ethernet_init/ethernet_init.c
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
@@ -69,6 +69,11 @@ static esp_eth_handle_t eth_init_internal(esp_eth_mac_t **mac_out, esp_eth_phy_t
// Update vendor specific MAC config based on board configuration
esp32_emac_config.smi_mdc_gpio_num = CONFIG_EXAMPLE_ETH_MDC_GPIO;
esp32_emac_config.smi_mdio_gpio_num = CONFIG_EXAMPLE_ETH_MDIO_GPIO;
#if CONFIG_EXAMPLE_USE_SPI_ETHERNET
// The DMA is shared resource between EMAC and the SPI. Therefore, adjust
// EMAC DMA burst length when SPI Ethernet is used along with EMAC.
esp32_emac_config.dma_burst_len = ETH_DMA_BURST_LEN_4;
#endif // CONFIG_EXAMPLE_USE_SPI_ETHERNET
// Create new ESP32 Ethernet MAC instance
esp_eth_mac_t *mac = esp_eth_mac_new_esp32(&esp32_emac_config, &mac_config);
// Create new PHY instance based on board configuration
@@ -175,7 +180,9 @@ static esp_eth_handle_t eth_init_spi(spi_eth_module_config_t *spi_eth_module_con
.mode = 0,
.clock_speed_hz = CONFIG_EXAMPLE_ETH_SPI_CLOCK_MHZ * 1000 * 1000,
.queue_size = 20,
.spics_io_num = spi_eth_module_config->spi_cs_gpio
.spics_io_num = spi_eth_module_config->spi_cs_gpio,
.input_delay_ns = 20
};
// Init vendor specific MAC config to default, and create new SPI Ethernet MAC instance
// and new PHY instance based on board configuration