99 lines
3.1 KiB
Plaintext
99 lines
3.1 KiB
Plaintext
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menu "I2C Port 0"
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config I2C_MANAGER_0_ENABLED
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bool "Enable I2C port 0"
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if I2C_MANAGER_0_ENABLED
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config I2C_MANAGER_0_SDA
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int "SDA (GPIO pin)"
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default 0
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config I2C_MANAGER_0_SCL
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int "SCL (GPIO pin)"
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default 0
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config I2C_MANAGER_0_FREQ_HZ
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int "Frequency (Hz)"
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default 400000
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range 100000 5000000
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help
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The clock speed in Hz. Ranges from 100000 (100 kHz) to
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5000000 (5 Mhz). I2C busses that involve external wires may
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have to be slower, and the real maximum speed the bus will
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support depends on the value of the pullup resistors and the
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design of the overall circuit.
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config I2C_MANAGER_0_TIMEOUT
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int "R/W timeout (ms)"
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default 20
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range 10 1000
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help
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Timeout for I2C read and write operations. This does not
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include the time waiting for a lock.
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config I2C_MANAGER_0_LOCK_TIMEOUT
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int "Stale lock override (ms)"
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default 50
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range 10 1000
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help
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Timeout at which point an operation waiting for its turn on
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the port will assume that whatever set the lock has died and
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overrides it. Set this somewhat larger than the previous
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timeout.
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config I2C_MANAGER_0_PULLUPS
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bool "Use ESP32 built-in bus pull-up resistors"
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help
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The I2C bus needs resistors to make sure it's in a defined
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state when nobody is talking. Many circuits have external
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pullup resistors already and turning these on will increase
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power consumption slightly and may limit the speed your bus
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can attain. Try with these off first if you don't know.
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endif
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endmenu
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menu "I2C Port 1"
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config I2C_MANAGER_1_ENABLED
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bool "Enable I2C port 1"
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if I2C_MANAGER_1_ENABLED
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config I2C_MANAGER_1_SDA
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int "SDA (GPIO pin)"
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config I2C_MANAGER_1_SCL
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int "SCL (GPIO pin)"
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config I2C_MANAGER_1_FREQ_HZ
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int "Frequency (Hz)"
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default 1000000
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range 100000 5000000
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help
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The clock speed in Hz. Ranges from 100000 (100 kHz) to
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5000000 (5 Mhz). I2C busses that involve external wires may
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have to be slower, and the real maximum speed the bus will
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support depends on the value of the pullup resistors and the
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design of the overall circuit.
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config I2C_MANAGER_1_TIMEOUT
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int "R/W timeout (ms)"
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default 20
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range 10 1000
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help
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Timeout for I2C read and write operations. This does not
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include the time waiting for a lock. Default should be fine.
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config I2C_MANAGER_1_LOCK_TIMEOUT
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int "Stale lock override (ms)"
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default 50
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help
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Timeout at which point an operation waiting for its turn on
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the port will assume that whatever set the lock has died and
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overrides it. Set this somewhat larger than the previous
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timeout. Default should be fine.
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range 30 1000
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config I2C_MANAGER_1_PULLUPS
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bool "Use ESP32 built-in bus pull-up resistors"
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help
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The I2C bus needs resistors to make sure it's in a defined
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state when nobody is talking. Many circuits have external
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pullup resistors already and turning these on will increase
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power consumption slightly and may limit the speed your bus
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can attain. Try with these off first if you don't know.
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endif
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endmenu
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