void BLE_SLP_Handler(void)
//void BLE_SLP_Handler_func(void)
{
ble_regs_pop();
// smpc_regs_pop();
// SetBits16(SYS_CTRL_REG, DEBUGGER_ENABLE, 0);
SetBits16(GP_CONTROL_REG, BLE_WAKEUP_REQ, 0); //just to be sure
if((jump_table_struct[0] == TASK_GTL) || (BLE_INTEGRATED_HOST_GTL == 1 ))
{
// UART and pads have already been activated by periph_init() which is called
// at initialization by main_func() and during wakeup by BLE_WAKEUP_LP_Handler().
gtl_eif_init();
}
SetBits32(BLE_INTACK_REG, SLPINTACK, 1);
#if DEEP_SLEEP //Needed only for compilation. Remove when ROM code is ready.
#if RW_BLE_SUPPORT
rwip_wakeup();
#endif //RW_BLE_SUPPORT
#endif //DEEP_SLEEP
/*
* Radio Subsystem initialization. Execute here after making sure that BLE core is awake.
*/
rf_workaround_init();
rf_reinit();
if (lp_clk_sel == LP_CLK_RCX20)
calibrate_rcx20(20);
rwble_last_event = BLE_EVT_SLP;
}
/*
* LOCAL FUNCTIONS DEFINITIONS
****************************************************************************************
*/
// ============================================================================================
// ==================== DEEP SLEEP PATCH - THIS CODE MUST STAY IN RAM =========================
// ============================================================================================
extern void rf_workaround_init(void);
extern void rf_reinit(void);
// /*********************************************************************************
// *** WAKEUP_LP_INT ISR
// ***/
void BLE_WAKEUP_LP_Handler(void)
{
volatile long t=0;
#if !(USE_WDOG)
SetWord16(SET_FREEZE_REG, FRZ_WDOG); //Prepare WDOG, i.e. stop
#endif
// // Gives 1dB higher sensitivity - UNTESTED
// if (GetBits16(ANA_STATUS_REG, BOOST_SELECTED) == 0x1)
// {
// // Boost-mode
// SetBits16(DCDC_CTRL2_REG, DCDC_CUR_LIM, 0x8); // 80mA
// }
// else
// {
// // Buck-mode
// SetBits16(DCDC_CTRL2_REG, DCDC_CUR_LIM, 0x4); // 40mA
// }
/*
* Wait and Switch to XTAL 16MHz
* (default after each wake-up is RC 16MHz, but XTAL initialization sequence has been already initiated by PMU)
* NOTE:
* 1. If app does not need XTAL16MHz but RC16MHz is enough then skip this section!
* 2. Wait-loop BEFORE activating PERIPH_PD in order to save some power...
*/
// It will save some power if you lower the clock while waiting for XTAL16 to settle.
// Could also switch to 32KHz, but then processing power is dramatically reduced (e.g. patching() routine may be too slow).
SetBits16(CLK_AMBA_REG, PCLK_DIV, 3); // lowest is 2MHz (div 8, source is RC @16MHz)
SetBits16(CLK_AMBA_REG, HCLK_DIV, 3);
while ( !GetBits16(SYS_STAT_REG, XTAL16_SETTLED) ) // this takes some mili seconds
__NOP(), __NOP(), __NOP(); // reduce some APB activity
SetBits16(CLK_CTRL_REG, SYS_CLK_SEL, 0); // select XTAL 16MHz
SetBits16(CLK_16M_REG, RC16M_ENABLE, 0); // save power from RC 16MHz
// and restore clock rates (refer to a couple of lines above)
SetBits16(CLK_AMBA_REG, PCLK_DIV, 0);
SetBits16(CLK_AMBA_REG, HCLK_DIV, 0);
/*
* Init System Power Domain blocks: GPIO, WD Timer, Sys Timer, etc.
* Power up and init Peripheral Power Domain blocks,
* and finally release the pad latches.
*/
periph_init();
/*
* Since XTAL 16MHz is activated, power-up the Radio Subsystem (including BLE)
*
* Note that BLE core clock is masked in order to handle the case where RADIO_PD does not get into power down state.
* The BLE clock should be active only as long as system is running at XTAL 16MHz (not at RC16 or 32KHz).
* Also BLE clock should be enabled before powering up the RADIO Power Domain !
*/
SetBits16(CLK_RADIO_REG, BLE_ENABLE, 1); // BLE clock enable
SetBits16(PMU_CTRL_REG, RADIO_SLEEP, 0); // Power up! Note: System must run at 16MHz when powering up RADIO_PD.
while (!(GetWord16(SYS_STAT_REG) & RAD_IS_UP)) ; // this may take up to 1/2 of the 32KHz clock period
/*
* Wait for at least one Low Power clock edge after the power up of the Radio Power Domain *e.g. with ble_wait_lp_clk_posedge() )
* or even better check the BLE_CNTL2_REG[WAKEUPLPSTAT] !
* Thus you assure that BLE_WAKEUP_LP_IRQ is deasserted and BLE_SLP_IRQ is asserted.
* After this check exit this ISE in order to proceed with BLE_SLP_Handler().
*/
while ( GetBits32(BLE_CNTL2_REG, WAKEUPLPSTAT) || !GetBits32(BLE_INTSTAT_REG, SLPINTSTAT))
if (t) break;
// Now BLE_WAKEUP_LP_IRQ is deasserted and BLE_SLP_IRQ is asserted, so exit in order to proceed with BLE_SLP_Handler().
// NOTE: If returning from BLE_WAKEUP_LP_Handler() will not cause BLE_SLP_Handler() to start,
// but the code after __WFI() is executed, then THERE WAS A SW SETUP PROBLEM !!!
// so it is recommended to place a check after __WFI().
/*
* Radio Subsystem initialization. Execute here after making sure that BLE core is awake.
*/
rf_workaround_init();
rf_reinit();
}
