This is the configuration structure for the I2C slave device. It is used as an argument for i2c_slave_init to provide the desired configurations for the module. The structure should be initialized using the i2c_slave_get_config_defaults.
| Type | Name | Description |
|---|---|---|
| uint16_t | address |
Address or upper limit of address range |
| uint16_t | address_mask |
Address mask, second address, or lower limit of address range |
| enum i2c_slave_address_mode | address_mode |
Addressing mode |
| uint16_t | buffer_timeout |
Timeout to wait for master in polled functions |
| bool | enable_general_call_address |
Enable general call address recognition (general call address is defined as 0000000 with direction bit 0). |
| bool | enable_nack_on_address |
Enable NACK on address match (this can be changed after initialization via the i2c_slave_enable_nack_on_address and i2c_slave_disable_nack_on_address functions). |
| bool | enable_scl_low_timeout |
Set to enable the SCL low timeout |
| enum gclk_generator | generator_source |
GCLK generator to use as clock source |
| uint32_t | pinmux_pad0 |
PAD0 (SDA) pinmux |
| uint32_t | pinmux_pad1 |
PAD1 (SCL) pinmux |
| bool | run_in_standby |
Set to keep module active in sleep modes |
| bool | scl_low_timeout |
Set to enable SCL low time-out |
| bool | scl_stretch_only_after_ack_bit |
Set to enable SCL stretch only after ACK bit (required for high speed) |
| enum i2c_slave_sda_hold_time | sda_hold_time |
SDA hold time with respect to the negative edge of SCL |
| bool | slave_scl_low_extend_timeout |
Set to enable slave SCL low extend time-out |
| bool | ten_bit_address |
Enable 10-bit addressing |
| enum i2c_slave_transfer_speed | transfer_speed |
Transfer speed mode |