void at86rf231_reset(void)
{
/* force reset */
at86rf231_rst_set();
/* put pins to default values */
at86rf231_spi_unselect();
at86rf231_slp_clear();
/* additional waiting to comply to min rst pulse width */
uint8_t delay = 50;
while (delay--){}
at86rf231_rst_clear();
/* Send a FORCE TRX OFF command */
at86rf231_reg_write(AT86RF231_REG__TRX_STATE, AT86RF231_TRX_STATE__FORCE_TRX_OFF);
/* busy wait for TRX_OFF state */
uint8_t status;
uint8_t max_wait = 100;
do {
status = at86rf231_get_status();
if (!--max_wait) {
printf("at86rf231 : ERROR : could not enter TRX_OFF mode\n");
break;
}
} while ((status & AT86RF231_TRX_STATUS_MASK__TRX_STATUS)
!= AT86RF231_TRX_STATUS__TRX_OFF);
}
void at86rf231_switch_to_rx(void)
{
at86rf231_disable_interrupts();
// Send a FORCE TRX OFF command
at86rf231_reg_write(AT86RF231_REG__TRX_STATE, AT86RF231_TRX_STATE__FORCE_TRX_OFF);
// Reset IRQ to TRX END only
at86rf231_reg_write(AT86RF231_REG__IRQ_MASK, AT86RF231_IRQ_STATUS_MASK__TRX_END);
// Read IRQ to clear it
at86rf231_reg_read(AT86RF231_REG__IRQ_STATUS);
// Enable IRQ interrupt
at86rf231_enable_interrupts();
// Start RX
at86rf231_reg_write(AT86RF231_REG__TRX_STATE, AT86RF231_TRX_STATE__RX_ON);
// wait until it is on RX_ON state
uint8_t status;
uint8_t max_wait = 100; // TODO : move elsewhere, this is in 10us
do {
status = at86rf231_get_status();
vtimer_usleep(10);
if (!--max_wait) {
printf("at86rf231 : ERROR : could not enter RX_ON mode");
break;
}
}
while ((status & AT86RF231_TRX_STATUS_MASK__TRX_STATUS) != AT86RF231_TRX_STATUS__RX_ON);
}