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i2c_slave_config_t struct
I2C slave specific configurations
Syntax
typedef struct
{
i2c_port_num_t i2c_port;
gpio_num_t sda_io_num;
gpio_num_t scl_io_num;
i2c_clock_source_t clk_source;
uint32_t send_buf_depth;
uint16_t slave_addr;
i2c_addr_bit_len_t addr_bit_len;
int intr_priority;
struct {
#if SOC_I2C_SLAVE_CAN_GET_STRETCH_CAUSE
uint32_t stretch_en: 1;
#endif
#if SOC_I2C_SLAVE_SUPPORT_BROADCAST
uint32_t broadcast_en: 1;
#endif
#if SOC_I2C_SLAVE_SUPPORT_I2CRAM_ACCESS
uint32_t access_ram_en: 1;
#endif
#if SOC_I2C_SLAVE_SUPPORT_SLAVE_UNMATCH
uint32_t slave_unmatch_en: 1;
#endif
uint32_t allow_pd: 1;
} flags;
} i2c_slave_config_t;
Fields
Field
Declared as
Description
uint32_t
Depth of internal transfer ringbuffer, increase this value can support more transfers pending in the background.
int
I2C interrupt priority, if set to 0, driver will select the default priority (1,2,3).
struct {
#if SOC_I2C_SLAVE_CAN_GET_STRETCH_CAUSE
uint32_t stretch_en: 1;
#endif
#if SOC_I2C_SLAVE_SUPPORT_BROADCAST
uint32_t broadcast_en: 1;
#endif
#if SOC_I2C_SLAVE_SUPPORT_I2CRAM_ACCESS
uint32_t access_ram_en: 1;
#endif
#if SOC_I2C_SLAVE_SUPPORT_SLAVE_UNMATCH
uint32_t slave_unmatch_en: 1;
#endif
uint32_t allow_pd: 1;
}
I2C slave config flags.
Examples
Code
Location
Scope
Referrer