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Merge branch 'bugfix/spi_eth_example_pin' into 'master'

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esp_eth: Examples: Extend configurable pins for SPI modules

Closes IDFGH-4372

See merge request espressif/esp-idf!13113
This commit is contained in:
David Čermák 2021-04-21 16:06:13 +00:00
commit 10fd0c36a1
2 changed files with 35 additions and 13 deletions
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7
examples/ethernet/README.md
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@ -26,9 +26,9 @@ See the [README.md](../README.md) file in the upper level [examples](../) direct
* PHY chip has a reset pin, if want to do a hardware reset during initialization, then you have to connect it with one GPIO on ESP32. See more information from [here](#configure-the-project). The default GPIO used for resetting PHY chip is GPIO5.
### Using DM9051
### Using SPI ethernet modules
* DM9051 Ethernet module consumes one SPI interface plus an interrupt and reset GPIO. By default they're connected as follows:
* SPI Ethernet modules (DM9051, W5500, ...) typically consume one SPI interface plus an interrupt and reset GPIO. By default they're connected as follows:
| GPIO | DM9051 |
| ------ | ----------- |
@ -39,6 +39,9 @@ See the [README.md](../README.md) file in the upper level [examples](../) direct
| GPIO4 | Interrupt |
| GPIO5 | Reset |
Please consult Espressif Technical reference manual for assigning any other pins, especially when choosing from system configuration menu for the ethernet examples,
some pins cannot be used.
## Common Configurations
1. In the `Example Configuration` menu:

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examples/ethernet/basic/main/Kconfig.projbuild
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@ -101,49 +101,68 @@ menu "Example Configuration"
config EXAMPLE_ETH_SPI_SCLK_GPIO
int "SPI SCLK GPIO number"
range 0 33
default 20
range 0 34 if IDF_TARGET_ESP32
range 0 46 if IDF_TARGET_ESP32S2
range 0 19 if IDF_TARGET_ESP32C3
default 18 if IDF_TARGET_ESP32
default 20 if IDF_TARGET_ESP32S2
default 6 if IDF_TARGET_ESP32C3
help
Set the GPIO number used by SPI SCLK.
config EXAMPLE_ETH_SPI_MOSI_GPIO
int "SPI MOSI GPIO number"
range 0 33
default 19
range 0 34 if IDF_TARGET_ESP32
range 0 46 if IDF_TARGET_ESP32S2
range 0 19 if IDF_TARGET_ESP32C3
default 23 if IDF_TARGET_ESP32
default 19 if IDF_TARGET_ESP32S2
default 7 if IDF_TARGET_ESP32C3
help
Set the GPIO number used by SPI MOSI.
config EXAMPLE_ETH_SPI_MISO_GPIO
int "SPI MISO GPIO number"
range 0 33
default 18
range 0 34 if IDF_TARGET_ESP32
range 0 46 if IDF_TARGET_ESP32S2
range 0 19 if IDF_TARGET_ESP32C3
default 19 if IDF_TARGET_ESP32
default 18 if IDF_TARGET_ESP32S2
default 2 if IDF_TARGET_ESP32C3
help
Set the GPIO number used by SPI MISO.
config EXAMPLE_ETH_SPI_CS_GPIO
int "SPI CS GPIO number"
range 0 33
default 21
range 0 34 if IDF_TARGET_ESP32
range 0 46 if IDF_TARGET_ESP32S2
range 0 19 if IDF_TARGET_ESP32C3
default 5 if IDF_TARGET_ESP32
default 21 if IDF_TARGET_ESP32S2
default 10 if IDF_TARGET_ESP32C3
help
Set the GPIO number used by SPI CS.
config EXAMPLE_ETH_SPI_CLOCK_MHZ
int "SPI clock speed (MHz)"
range 5 80
default 36
default 12 if IDF_TARGET_ESP32 || IDF_TARGET_ESP32C3
default 36 if IDF_TARGET_ESP32S2
help
Set the clock speed (MHz) of SPI interface.
config EXAMPLE_ETH_SPI_INT_GPIO
int "Interrupt GPIO number"
default 4
default 17 if IDF_TARGET_ESP32
default 4 if IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32C3
help
Set the GPIO number used by the SPI Ethernet module interrupt line.
endif # EXAMPLE_USE_SPI_ETHERNET
config EXAMPLE_ETH_PHY_RST_GPIO
int "PHY Reset GPIO number"
default 5
default 16 if IDF_TARGET_ESP32
default 5 if IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32C3
help
Set the GPIO number used to reset PHY chip.
Set to -1 to disable PHY chip hardware reset.