//Enter HIB mode (dual CPU). Puts CPU2 in STANDBY first. Alternately,
//CPU2 may be in reset.
void HIB()
{
#if defined(CPU2)
STANDBY();
#elif defined(CPU1)
EALLOW;
CpuSysRegs.LPMCR.bit.LPM = LPM_HIB;
EDIS;
while (DevCfgRegs.LPMSTAT.bit.CPU2LPMSTAT == 0x0 && DevCfgRegs.RSTSTAT.bit.CPU2RES == 1) {;}
DisablePeripheralClocks();
EALLOW;
ClkCfgRegs.SYSPLLCTL1.bit.PLLCLKEN = 0;
ClkCfgRegs.SYSPLLCTL1.bit.PLLEN = 0;
EDIS;
asm(" IDLE");
#endif
}
//
// Main
//
void main(void)
{
//
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the F2837xS_SysCtrl.c file.
//
InitSysCtrl();
//
// Step 2. Initialize GPIO:
// This example function is found in the F2837xS_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
//
InitGpio();
//
// GPIO0 is the external wake-up source
//
GPIO_SetupPinMux(0,GPIO_MUX_CPU1,0);
GPIO_SetupPinOptions(0,GPIO_INPUT,GPIO_PULLUP|GPIO_ASYNC);
//
// GPIO1 is an output
//
GPIO_SetupPinMux(1,GPIO_MUX_CPU1,0);
GPIO_SetupPinOptions(1,GPIO_OUTPUT,0);
EALLOW;
//
// Use GPIO0 to wake the CPU from Standby
//
CpuSysRegs.GPIOLPMSEL0.bit.GPIO0 = 1;
//
// The wakeup signal should be (2+QUALSTBY) OSCCLKs wide
//
CpuSysRegs.LPMCR.bit.QUALSTDBY = 2;
EDIS;
//
// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
//
DINT;
//
// Initialize the PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the F2837xS_PieCtrl.c file.
//
InitPieCtrl();
//
// Disable CPU interrupts and clear all CPU interrupt flags:
//
IER = 0x0000;
IFR = 0x0000;
//
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example. This is useful for debug purposes.
// The shell ISR routines are found in F2837xS_DefaultIsr.c.
// This function is found in F2837xS_PieVect.c.
//
InitPieVectTable();
//
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
//
EALLOW;
PieVectTable.WAKE_INT = &local_WAKE_ISR;
EDIS;
//
// Step 4. Initialize all the Device Peripherals:
//
//
// Not applicable for this example.
//
//
// Step 5. User specific code, enable interrupts:
//
//
// Enable CPU INT1 which is connected to WakeInt:
//
IER |= M_INT1;
//
// Enable WAKEINT in the PIE: Group 1 interrupt 4
//
PieCtrlRegs.PIEIER1.bit.INTx8 = 1;
PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
//
// Enable global Interrupts:
//
EINT;
//
// Ensure there are no subsequent flash accesses to wake up the pump and
// bank Power down the flash bank and pump
//
SeizeFlashPump_Bank0();
FlashOff_Bank0();
ReleaseFlashPump();
SeizeFlashPump_Bank1();
FlashOff_Bank1();
ReleaseFlashPump();
//
// enter STANDBY mode
//
STANDBY();
//
// loop forever
//
while(1);
}
