AT07334: SAM4 TWI Master Mode Driver [APPLICATION NOTE]
42274A-MCU-05/2014
12
status_code_t twi_master_write(
Twim * twim,
struct twim_package * package)
Table 4-5. Parameters
Data direction Parameter name Description
[in] twim Base address of the TWIM
[in] package Package information and data
Table 4-6. Return Values
Return value Description
STATUS_OK If all bytes were send successfully
ERR_IO_ERROR NACK received or Bus Arbitration lost
4.4.3 Function twim_clear_status()
Clear the current status of the TWIM.
void twim_clear_status(
Twim * twim,
uint32_t clear_status)
Write the value passed in clear_status to the Status Clear Register. Bits set in clear_status result in setting to zero
the corresponding position in the Status Register. See the appropriate datasheet for more detail.
Table 4-7. Parameters
Data direction Parameter name Description
[in] twim Base address of the TWIM
[in] clear_status The TWIM status
4.4.4 Function twim_default_callback()
TWIM default callback.
void twim_default_callback(
Twim * twim)
Each time a TWI packet is transmitted a callback function is executed. This provides default functionality and is
activated by calling twim_set_callback .
Table 4-8. Parameters
Data direction Parameter name Description
[in] twim Base address of the TWIM
4.4.5 Function twim_disable()
Sets the Master Disable bit of the Control Register, which disables master mode.
void twim_disable(
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