Two-Wire Interface (TWI) driver for SAM.
Copyright (c) 2011-2018 Microchip Technology Inc. and its subsidiaries.
#include "twi.h"Macros | |
| #define | I2C_FAST_MODE_SPEED 400000 |
| #define | LOW_LEVEL_TIME_LIMIT 384000 |
| #define | TWI_CLK_CALC_ARGU 4 |
| #define | TWI_CLK_DIV_MAX 0xFF |
| #define | TWI_CLK_DIV_MIN 7 |
| #define | TWI_CLK_DIVIDER 2 |
| #define | TWI_WP_KEY_VALUE TWI_WPMR_WPKEY_PASSWD |
Functions | |
| void | twi_disable_interrupt (Twi *p_twi, uint32_t ul_sources) |
| Disable TWI interrupts. More... | |
| void | twi_disable_master_mode (Twi *p_twi) |
| Disable TWI master mode. More... | |
| void | twi_disable_slave_mode (Twi *p_twi) |
| Disable TWI slave mode. More... | |
| void | twi_enable_interrupt (Twi *p_twi, uint32_t ul_sources) |
| Enable TWI interrupts. More... | |
| void | twi_enable_master_mode (Twi *p_twi) |
| Enable TWI master mode. More... | |
| void | twi_enable_slave_mode (Twi *p_twi) |
| Enable TWI slave mode. More... | |
| uint32_t | twi_get_interrupt_mask (Twi *p_twi) |
| Read TWI interrupt mask. More... | |
| uint32_t | twi_get_interrupt_status (Twi *p_twi) |
| Get TWI interrupt status. More... | |
| Pdc * | twi_get_pdc_base (Twi *p_twi) |
| Get TWI PDC base address. More... | |
| uint32_t | twi_master_init (Twi *p_twi, const twi_options_t *p_opt) |
| Initialize TWI master mode. More... | |
| uint32_t | twi_master_read (Twi *p_twi, twi_packet_t *p_packet) |
| Read multiple bytes from a TWI compatible slave device. More... | |
| uint32_t | twi_master_write (Twi *p_twi, twi_packet_t *p_packet) |
| Write multiple bytes to a TWI compatible slave device. More... | |
| uint32_t | twi_mk_addr (const uint8_t *addr, int len) |
| Construct the TWI module address register field. More... | |
| uint32_t | twi_probe (Twi *p_twi, uint8_t uc_slave_addr) |
| Test if a chip answers a given I2C address. More... | |
| uint8_t | twi_read_byte (Twi *p_twi) |
| Reads a byte from the TWI bus. More... | |
| void | twi_reset (Twi *p_twi) |
| Reset TWI. More... | |
| void | twi_set_slave_addr (Twi *p_twi, uint32_t ul_device_addr) |
| Set TWI slave address. More... | |
| uint32_t | twi_set_speed (Twi *p_twi, uint32_t ul_speed, uint32_t ul_mck) |
| Set the I2C bus speed in conjunction with the clock frequency. More... | |
| void | twi_slave_init (Twi *p_twi, uint32_t ul_device_addr) |
| Initialize TWI slave mode. More... | |
| uint32_t | twi_slave_read (Twi *p_twi, uint8_t *p_data) |
| Read data from master. More... | |
| uint32_t | twi_slave_write (Twi *p_twi, uint8_t *p_data) |
| Write data to TWI bus. More... | |
| void | twi_write_byte (Twi *p_twi, uint8_t uc_byte) |
| Sends a byte of data to one of the TWI slaves on the bus. More... | |
1.8.5