SAM SERCOM I2C Master Driver.
Copyright (c) 2012-2018 Microchip Technology Inc. and its subsidiaries.
Data Structures | |
| struct | i2c_master_config |
| Configuration structure for the I2C Master device. More... | |
| struct | i2c_master_module |
| SERCOM I2C Master driver software device instance structure. More... | |
| struct | i2c_master_packet |
| I2C master packet for read/write. More... | |
Macros | |
| #define | PINMUX_DEFAULT 0 |
Enumerations | |
| enum | i2c_master_baud_rate { I2C_MASTER_BAUD_RATE_100KHZ = 100, I2C_MASTER_BAUD_RATE_400KHZ = 400 } |
| I2C frequencies. More... | |
| enum | i2c_master_inactive_timeout { I2C_MASTER_INACTIVE_TIMEOUT_DISABLED = SERCOM_I2CM_CTRLA_INACTOUT(0), I2C_MASTER_INACTIVE_TIMEOUT_55US = SERCOM_I2CM_CTRLA_INACTOUT(1), I2C_MASTER_INACTIVE_TIMEOUT_105US = SERCOM_I2CM_CTRLA_INACTOUT(2), I2C_MASTER_INACTIVE_TIMEOUT_205US = SERCOM_I2CM_CTRLA_INACTOUT(3) } |
| Values for inactive bus time-out. More... | |
| enum | i2c_master_interrupt_flag { I2C_MASTER_INTERRUPT_WRITE = 0, I2C_MASTER_INTERRUPT_READ = 1 } |
| Interrupt flags. More... | |
| enum | i2c_master_start_hold_time { I2C_MASTER_START_HOLD_TIME_DISABLED = SERCOM_I2CM_CTRLA_SDAHOLD(0), I2C_MASTER_START_HOLD_TIME_50NS_100NS = SERCOM_I2CM_CTRLA_SDAHOLD(1), I2C_MASTER_START_HOLD_TIME_300NS_600NS = SERCOM_I2CM_CTRLA_SDAHOLD(2), I2C_MASTER_START_HOLD_TIME_400NS_800NS = SERCOM_I2CM_CTRLA_SDAHOLD(3) } |
| Values for hold time after start bit. More... | |
Functions | |
Lock/Unlock | |
| static enum status_code | i2c_master_lock (struct i2c_master_module *const module) |
| Attempt to get lock on driver instance. More... | |
| static void | i2c_master_unlock (struct i2c_master_module *const module) |
| Unlock driver instance. More... | |
Configuration and Initialization | |
| static bool | i2c_master_is_syncing (const struct i2c_master_module *const module) |
| Returns the synchronization status of the module. More... | |
| static void | i2c_master_get_config_defaults (struct i2c_master_config *const config) |
| Gets the I2C master default configurations. More... | |
| enum status_code | i2c_master_init (struct i2c_master_module *const module, Sercom *const hw, const struct i2c_master_config *const config) |
| Initializes the requested I2C hardware module. More... | |
| static void | i2c_master_enable (const struct i2c_master_module *const module) |
| Enables the I2C module. More... | |
| static void | i2c_master_disable (const struct i2c_master_module *const module) |
| Disable the I2C module. More... | |
| void | i2c_master_reset (struct i2c_master_module *const module) |
| Resets the hardware module. More... | |
Read and Write | |
| enum status_code | i2c_master_read_packet_wait (struct i2c_master_module *const module, struct i2c_master_packet *const packet) |
| Reads data packet from slave. More... | |
| enum status_code | i2c_master_read_packet_wait_no_stop (struct i2c_master_module *const module, struct i2c_master_packet *const packet) |
| Reads data packet from slave without sending a stop condition when done. More... | |
| enum status_code | i2c_master_write_packet_wait (struct i2c_master_module *const module, struct i2c_master_packet *const packet) |
| Writes data packet to slave. More... | |
| enum status_code | i2c_master_write_packet_wait_no_stop (struct i2c_master_module *const module, struct i2c_master_packet *const packet) |
| Writes data packet to slave without sending a stop condition when done. More... | |
| void | i2c_master_send_stop (struct i2c_master_module *const module) |
| Sends stop condition on bus. More... | |
| void | i2c_master_send_nack (struct i2c_master_module *const module) |
| Sends nack signal on bus. More... | |
| enum status_code | i2c_master_read_byte (struct i2c_master_module *const module, uint8_t *byte) |
| Reads one byte data from slave. More... | |
| enum status_code | i2c_master_write_byte (struct i2c_master_module *const module, uint8_t byte) |
| Write one byte data to slave. More... | |
| enum status_code | i2c_master_read_packet_wait_no_nack (struct i2c_master_module *const module, struct i2c_master_packet *const packet) |
| Reads data packet from slave without sending a nack signal and a stop condition when done. More... | |
| #define PINMUX_DEFAULT 0 |
Referenced by i2c_master_get_config_defaults(), and usart_init().
1.8.5