Data Structures | |
| struct | TWI_Slave |
| TWI slave driver struct. More... | |
Macros | |
| #define | TWI_BAUD(F_SYS, F_TWI) ((F_SYS / (2 * F_TWI)) - 5) |
| #define | TWIS_RECEIVE_BUFFER_SIZE 8 |
| #define | TWIS_SEND_BUFFER_SIZE 8 |
| #define | TWIS_STATUS_BUSY 1 |
| #define | TWIS_STATUS_READY 0 |
Typedefs | |
| typedef struct TWI_Slave | TWI_Slave_t |
| TWI slave driver struct. More... | |
| typedef enum TWIS_RESULT_enum | TWIS_RESULT_t |
Enumerations | |
| enum | TWIS_RESULT_enum { TWIS_RESULT_UNKNOWN = (0x00<<0), TWIS_RESULT_OK = (0x01<<0), TWIS_RESULT_BUFFER_OVERFLOW = (0x02<<0), TWIS_RESULT_TRANSMIT_COLLISION = (0x03<<0), TWIS_RESULT_BUS_ERROR = (0x04<<0), TWIS_RESULT_FAIL = (0x05<<0), TWIS_RESULT_ABORTED = (0x06<<0) } |
Functions | |
| static void | twi_slave_disable (TWI_t *twi) |
| Disable Slave Mode of the TWI. More... | |
| static void | twi_slave_enable (TWI_t *twi) |
| Enable Slave Mode of the TWI. More... | |
| void | TWI_SlaveAddressMatchHandler (TWI_Slave_t *twi) |
| TWI address match interrupt handler. More... | |
| void | TWI_SlaveDataHandler (TWI_Slave_t *twi) |
| TWI data interrupt handler. More... | |
| void | TWI_SlaveInitializeDriver (TWI_Slave_t *twi, TWI_t *module, void(*processDataFunction)(void)) |
| Initalizes TWI slave driver structure. More... | |
| void | TWI_SlaveInitializeModule (TWI_Slave_t *twi, uint8_t address, TWI_SLAVE_INTLVL_t intLevel) |
| Initialize the TWI module. More... | |
| void | TWI_SlaveInterruptHandler (TWI_Slave_t *twi) |
| Common TWI slave interrupt service routine. More... | |
| void | TWI_SlaveReadHandler (TWI_Slave_t *twi) |
| TWI slave read interrupt handler. More... | |
| void | TWI_SlaveStopHandler (TWI_Slave_t *twi) |
| TWI stop condition interrupt handler. More... | |
| void | TWI_SlaveTransactionFinished (TWI_Slave_t *twi, uint8_t result) |
| TWI transaction finished function. More... | |
| void | TWI_SlaveWriteHandler (TWI_Slave_t *twi) |
| TWI slave write interrupt handler. More... | |
| #define TWI_BAUD | ( | F_SYS, | |
| F_TWI | |||
| ) | ((F_SYS / (2 * F_TWI)) - 5) |
Baud register setting calculation. Formula described in datasheet.
| #define TWIS_RECEIVE_BUFFER_SIZE 8 |
Referenced by TWI_SlaveReadHandler().
| #define TWIS_SEND_BUFFER_SIZE 8 |
Referenced by run_twi_master_recv_test(), run_twi_slave_recv_test(), and TWI_SlaveWriteHandler().
| #define TWIS_STATUS_BUSY 1 |
Referenced by TWI_SlaveAddressMatchHandler().
| #define TWIS_STATUS_READY 0 |
Referenced by TWI_SlaveInitializeDriver(), TWI_SlaveInterruptHandler(), and TWI_SlaveTransactionFinished().
| typedef struct TWI_Slave TWI_Slave_t |
TWI slave driver struct.
TWI slave struct. Holds pointer to TWI module and data processing routine, buffers and necessary variables.
| typedef enum TWIS_RESULT_enum TWIS_RESULT_t |
| enum TWIS_RESULT_enum |
|
inlinestatic |
Disable Slave Mode of the TWI.
| twi | Base address of the TWI instance. |
|
inlinestatic |
Enable Slave Mode of the TWI.
TWI slave interrupt service routine.
Interrupt service routine for the TWI slave. Copy the interrupt vector into your code if needed.
ISR(TWIC_TWIS_vect) { TWI_SlaveInterruptHandler(&twiSlaveC); }
| twi | Base address of the TWI instance. |
| void TWI_SlaveAddressMatchHandler | ( | TWI_Slave_t * | twi | ) |
TWI address match interrupt handler.
Prepares TWI module for transaction when an address match occurs.
| twi | The TWI_Slave_t struct instance. |
References TWI_Slave::abort, TWI_Slave::bytesReceived, TWI_Slave::bytesSent, TWI_Slave::interface, TWI_Slave::result, TWI_Slave::status, TWI_SlaveTransactionFinished(), TWIS_RESULT_ABORTED, TWIS_RESULT_UNKNOWN, and TWIS_STATUS_BUSY.
Referenced by TWI_SlaveInterruptHandler().
| void TWI_SlaveDataHandler | ( | TWI_Slave_t * | twi | ) |
TWI data interrupt handler.
Calls the appropriate slave read or write handler.
| twi | The TWI_Slave_t struct instance. |
References TWI_Slave::interface, TWI_SlaveReadHandler(), and TWI_SlaveWriteHandler().
Referenced by TWI_SlaveInterruptHandler().
| void TWI_SlaveInitializeDriver | ( | TWI_Slave_t * | twi, |
| TWI_t * | module, | ||
| void(*)(void) | processDataFunction | ||
| ) |
Initalizes TWI slave driver structure.
Initialize the instance of the TWI Slave and set the appropriate values.
| twi | The TWI_Slave_t struct instance. |
| module | Pointer to the TWI module. |
| processDataFunction | Pointer to the function that handles incoming data. |
References TWI_Slave::abort, TWI_Slave::bytesReceived, TWI_Slave::bytesSent, TWI_Slave::interface, TWI_Slave::Process_Data, TWI_Slave::result, TWI_Slave::status, TWIS_RESULT_UNKNOWN, and TWIS_STATUS_READY.
Referenced by run_twi_master_recv_test(), run_twi_master_send_test(), run_twi_slave_recv_test(), and twi_slave_setup().
| void TWI_SlaveInitializeModule | ( | TWI_Slave_t * | twi, |
| uint8_t | address, | ||
| TWI_SLAVE_INTLVL_t | intLevel | ||
| ) |
Initialize the TWI module.
Enables interrupts on address recognition and data available. Remember to enable interrupts globally from the main application.
| twi | The TWI_Slave_t struct instance. |
| address | Slave address for this module. |
| intLevel | Interrupt level for the TWI slave interrupt handler. |
References TWI_Slave::interface.
Referenced by run_twi_master_recv_test(), run_twi_master_send_test(), run_twi_slave_recv_test(), and twi_slave_setup().
| void TWI_SlaveInterruptHandler | ( | TWI_Slave_t * | twi | ) |
Common TWI slave interrupt service routine.
Handles all TWI transactions and responses to address match, data reception, data transmission, bus error and data collision.
| twi | The TWI_Slave_t struct instance. |
References TWI_Slave::bytesReceived, TWI_Slave::bytesSent, TWI_Slave::interface, TWI_Slave::result, TWI_Slave::status, TWI_SlaveAddressMatchHandler(), TWI_SlaveDataHandler(), TWI_SlaveStopHandler(), TWI_SlaveTransactionFinished(), TWIS_RESULT_BUS_ERROR, TWIS_RESULT_FAIL, TWIS_RESULT_TRANSMIT_COLLISION, and TWIS_STATUS_READY.
Referenced by ISR().
| void TWI_SlaveReadHandler | ( | TWI_Slave_t * | twi | ) |
TWI slave read interrupt handler.
Handles TWI slave read transactions and responses.
| twi | The TWI_Slave_t struct instance. |
References TWI_Slave::abort, TWI_Slave::bytesReceived, data, TWI_Slave::interface, TWI_Slave::Process_Data, TWI_Slave::receivedData, TWI_SlaveTransactionFinished(), TWIS_RECEIVE_BUFFER_SIZE, TWIS_RESULT_ABORTED, and TWIS_RESULT_BUFFER_OVERFLOW.
Referenced by TWI_SlaveDataHandler().
| void TWI_SlaveStopHandler | ( | TWI_Slave_t * | twi | ) |
TWI stop condition interrupt handler.
| twi | The TWI_Slave_t struct instance. |
References TWI_Slave::interface, TWI_SlaveTransactionFinished(), and TWIS_RESULT_OK.
Referenced by TWI_SlaveInterruptHandler().
| void TWI_SlaveTransactionFinished | ( | TWI_Slave_t * | twi, |
| uint8_t | result | ||
| ) |
TWI transaction finished function.
Prepares module for new transaction.
| twi | The TWI_Slave_t struct instance. |
| result | The result of the transaction. |
References TWI_Slave::result, TWI_Slave::status, and TWIS_STATUS_READY.
Referenced by TWI_SlaveAddressMatchHandler(), TWI_SlaveInterruptHandler(), TWI_SlaveReadHandler(), TWI_SlaveStopHandler(), and TWI_SlaveWriteHandler().
| void TWI_SlaveWriteHandler | ( | TWI_Slave_t * | twi | ) |
TWI slave write interrupt handler.
Handles TWI slave write transactions and responses.
| twi | The TWI_Slave_t struct instance. |
References TWI_Slave::bytesSent, data, TWI_Slave::interface, TWI_Slave::sendData, TWI_SlaveTransactionFinished(), TWIS_RESULT_BUFFER_OVERFLOW, TWIS_RESULT_OK, and TWIS_SEND_BUFFER_SIZE.
Referenced by TWI_SlaveDataHandler().
1.8.5