OT_WEAK void radio_init( ) {
/// Transceiver implementation dependent
//vlFILE* fp;
/// Set SPIRIT1-dependent initialization defaults
//rfctl.flags = RADIO_FLAG_XOON;
rfctl.flags = 0;
rfctl.nextcal = 0;
/// Set universal Radio module initialization defaults
//radio.state = RADIO_Idle;
//radio.evtdone = &otutils_sig2_null;
/// Initialize the bus between SPIRIT1 and MCU, and load defaults.
/// SPIRIT1 starts-up in Idle (READY), so we set the state and flags
/// to match that. Then, init the bus and send RADIO to sleep.
/// SPIRIT1 can do SPI in Sleep.
spirit1_init_bus();
spirit1_load_defaults();
/// Do this workaround (SPIRIT1 Errata DocID023165 R5, section 1.2) to fix
/// the shutdown current issue for input voltages <= 2.6V. For input
/// voltages > 2.6V, it does not hurt anything.
spirit1_write(RFREG(PM_TEST), 0xCA);
spirit1_write(RFREG(TEST_SELECT), 0x04);
spirit1_write(RFREG(TEST_SELECT), 0x00);
/// Done with the radio init
//spirit1drv_smart_standby();
radio_sleep();
/// Initialize RM2 elements such as channels, link-params, etc.
rm2_init();
}
void spirit1_clockout_off() {
/// This is the reverse of spirit1_clockout_on(), described above.
#if (BOARD_FEATURE_RFXTALOUT)
spirit1.clkreq = False;
spirit1_write(RFREG(GPIO3_CONF), RFGPO(GND));
spirit1_write(RFREG(MCU_CK_CONF), 0);
spirit1drv_smart_standby();
#endif
}
/** Special Functions <BR>
* ========================================================================<BR>
* Notably, these two control the clock-out feature of the SPIRIT1, which is
* handy if you have a 48MHz crystal and you want to drive an otherwise
* crystal-less MCU for USB.
*/
void spirit1_clockout_on(ot_u8 clk_param) {
/// Set the SPIRIT1 to idle, then configure the driver so it never goes into sleep
/// or standby, and finally configure the SPIRIT1 to output the clock.
#if (BOARD_FEATURE_RFXTALOUT)
spirit1drv_smart_ready();
spirit1.clkreq = True;
spirit1_write(RFREG(MCU_CK_CONF), clk_param);
spirit1_write(RFREG(GPIO3_CONF), (_GPIO_SELECT(RFGPO_MCU_CLK) | _GPIO_MODE_HIDRIVE));
#endif
}
void spirit1_wfe_aes() {
// Kill any interrupts and activate the WFE event source (always pin 2)
EXTI->IMR &= (RFI_SOURCE2 | RFI_SOURCE1 | RFI_SOURCE0);
EXTI->EMR |= RFI_SOURCE2;
// read-out all IRQ_STATUS bits to clear
{ ot_u8 cmd[2];
cmd[0] = 1;
cmd[1] = RFREG(IRQ_STATUS3);
spirit1_spibus_io(2, 4, (ot_u8*)cmd);
}
// write AES to IRQ MASK
spirit1_write(0x40, RFREG(IRQ_MASK3));
}
