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https://github.com/zephyrproject-rtos/zephyr
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bc00f19724
The SAM4L have a unique I2C driver. It shares simultaneously pins for both master and slave controllers. Each controller have their own instance. This introduces the TWIM controller that handles only the master part. The TWIM controller uses no copy and the driver was prepared to work with both 7 and 10 bits address. The controller can handler up to 256 bytes for a single transfer allowing long data communication with almost no CPU intervention. The driver was wrote specifically to Zephyr. It receives a transfer list of from upper layers to a specific device on the bus. It programs the first and second transfer, if it exists, before start. At end of full read/write interrupt, will program the next data block. This process repeats until all transfers be executed. The driver uses interrupt from TWIM to check for erros or program next tranfer. Future work can enable low power mode on the driver allowing long transfers with low power consumption. Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
132 lines
2.8 KiB
Plaintext
132 lines
2.8 KiB
Plaintext
# I2C configuration options
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# Copyright (c) 2015 Intel Corporation
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# SPDX-License-Identifier: Apache-2.0
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#
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# I2C options
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#
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menuconfig I2C
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bool "I2C Drivers"
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help
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Enable I2C Driver Configuration
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if I2C
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config I2C_SHELL
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bool "Enable I2C Shell"
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default y
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depends on SHELL
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help
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Enable I2C Shell.
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The I2C shell currently support scanning and bus recovery.
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# Include these first so that any properties (e.g. defaults) below can be
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# overridden (by defining symbols in multiple locations)
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source "drivers/i2c/Kconfig.cc13xx_cc26xx"
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source "drivers/i2c/Kconfig.dw"
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source "drivers/i2c/Kconfig.esp32"
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source "drivers/i2c/slave/Kconfig"
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source "drivers/i2c/Kconfig.gpio"
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source "drivers/i2c/Kconfig.xec"
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source "drivers/i2c/Kconfig.nrfx"
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source "drivers/i2c/Kconfig.i2c_emul"
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source "drivers/i2c/Kconfig.sbcon"
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source "drivers/i2c/Kconfig.sifive"
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source "drivers/i2c/Kconfig.stm32"
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source "drivers/i2c/Kconfig.sam0"
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source "drivers/i2c/Kconfig.litex"
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source "drivers/i2c/Kconfig.lpc11u6x"
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config I2C_INIT_PRIORITY
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int "Init priority"
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default 60
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help
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I2C device driver initialization priority.
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module = I2C
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module-str = i2c
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source "subsys/logging/Kconfig.template.log_config"
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config I2C_GECKO
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bool "Gecko I2C driver"
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depends on HAS_SILABS_GECKO
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select SOC_GECKO_I2C
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help
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Enable the SiLabs Gecko I2C bus driver.
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config I2C_SAM_TWIHS
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bool "Atmel SAM (TWIHS) I2C driver"
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depends on SOC_FAMILY_SAM
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help
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Enable Atmel SAM MCU Family (TWIHS) I2C bus driver.
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config I2C_SAM_TWIM
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bool "Atmel SAM (TWIM) I2C driver"
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depends on SOC_SERIES_SAM4L
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help
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Enable Atmel SAM MCU Family (TWIM) I2C bus driver.
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config I2C_SAM_TWI
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bool "Atmel SAM (TWI) I2C driver"
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depends on SOC_FAMILY_SAM
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help
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Enable Atmel SAM MCU Family (TWI) I2C bus driver.
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config I2C_MCUX
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bool "MCUX I2C driver"
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depends on HAS_MCUX
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help
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Enable the mcux I2C driver.
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config I2C_MCUX_FLEXCOMM
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bool "MCUX FLEXCOMM I2C driver"
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depends on HAS_MCUX_FLEXCOMM
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help
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Enable the mcux flexcomm i2c driver.
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config I2C_MCUX_LPI2C
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bool "MCUX LPI2C driver"
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depends on HAS_MCUX_LPI2C && CLOCK_CONTROL
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help
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Enable the mcux LPI2C driver.
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config I2C_IMX
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bool "i.MX I2C driver"
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depends on HAS_IMX_I2C
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help
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Enable the i.MX I2C driver.
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config I2C_CC32XX
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bool "CC32XX I2C driver"
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depends on SOC_SERIES_CC32XX
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help
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Enable the CC32XX I2C driver.
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config I2C_BITBANG
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bool
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help
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Enable library used for software driven (bit banging) I2C support
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config I2C_NIOS2
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bool "Nios-II I2C driver"
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depends on HAS_ALTERA_HAL
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help
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Enable the Nios-II I2C driver.
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config I2C_0_IRQ_PRI
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int "Port 0 interrupt priority"
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depends on I2C_NIOS2
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help
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IRQ priority.
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config I2C_RV32M1_LPI2C
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bool "RV32M1 LPI2C driver"
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depends on HAS_RV32M1_LPI2C && CLOCK_CONTROL
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help
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Enable the RV32M1 LPI2C driver.
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endif # I2C
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