//! @{
void twis_init (void)
{
twis_slave_fct_t twis_slave_fct;
#if BOARD == UC3L_EK
/**
* \internal For UC3L devices, TWI default pins are,
* TWIMS0 -> PB05,PA21
* TWIMS1 -> PB04
* To enable TWI clock/data in another pin, these have
* to be assigned to other peripherals or as GPIO.
* \endinternal
*/
gpio_enable_gpio_pin(AVR32_PIN_PB05);
gpio_enable_gpio_pin(AVR32_PIN_PA21);
#endif
const gpio_map_t TWIS_GPIO_MAP = {
{TEST_TWIS_TWCK_PIN, TEST_TWIS_TWCK_FUNCTION},
{TEST_TWIS_TWD_PIN, TEST_TWIS_TWD_FUNCTION}
};
const twis_options_t TWIS_OPTIONS = {
.pba_hz = FPBA_HZ,
.speed = TWI_SPEED,
.chip = SLAVE_ADDRESS,
.smbus = false,
};
// Assign I/Os to SPI.
gpio_enable_module (TWIS_GPIO_MAP,
sizeof (TWIS_GPIO_MAP) / sizeof (TWIS_GPIO_MAP[0]));
// Set pointer to user specific application routines
twis_slave_fct.rx = &twis_slave_rx;
twis_slave_fct.tx = &twis_slave_tx;
twis_slave_fct.stop = &twis_slave_stop;
// Initialize as master.
twis_slave_init (TWIS, &TWIS_OPTIONS, &twis_slave_fct);
}
//! @}
/*! \brief Main function.
*/
/*! \remarks Main Function
*/
//! @{
int main (void)
{
// Configure the system clock
init_sys_clocks ();
// Init debug serial line
init_dbg_rs232 (FPBA_HZ);
// Display a header to user
print_dbg ("Slave Example\r\n");
print_dbg ("Slave Started\r\n");
// Initialize and enable interrupt
irq_initialize_vectors();
cpu_irq_enable();
// Initialize the TWIS Module
twis_init ();
while (true);
}
void TwoWireUB::begin(void)
{
if (irqpin >= 0)
ACTIVELOW_INIT(irqpin);
reg_iir = IS7x0_IIR_INTSTAT;
twis_init();
}
/**
* \brief Application entry point for TWI Slave example.
*
* \return Unused (ANSI-C compatibility).
*/
int main(void)
{
twis_callback_t slave_callbacks;
/* Initialize the SAM system */
sysclk_init();
/* Initialize the board */
board_init();
/* Initialize the console UART */
configure_console();
/* Output example information */
puts(STRING_HEADER);
/* Configure TWI as slave */
struct twis_config config;
twis_get_config_defaults(&config);
config.chip = SLAVE_ADDRESS;
if (twis_init(&twis_device, BOARD_BASE_TWI_SLAVE, &config) == STATUS_OK) {
/* Set pointer to user specific application routines */
slave_callbacks.rx = &twis_slave_rx;
slave_callbacks.tx = &twis_slave_tx;
slave_callbacks.stop = &twis_slave_stop;
slave_callbacks.error = &twis_slave_error;
twis_set_callback(&twis_device, TWIS_INTERRUPT_SLAVEADR_MATCH,
slave_callbacks, 1);
/* Enable the TWIS module */
twis_enable(&twis_device);
} else {
puts("-E- Initialization failed!\r\n");
}
while (1) {
}
}
