void llwu_init(void)
{
#ifdef OPENMOTE_K20
SIM_SCGC4 |= SIM_SCGC4_LLWU_MASK; //power llwu, in k20 72Mhz is always powered as there isn't a register to power it. in k20 100Mhz needs to be clocked.
#endif
enable_irq(LLWU_IRQ_NUM);
/*0x0200|0x0001 == LLWU_PE3_WUPE9 is radio isr and LLWU_PE1_WUPE0 is UART RX */
llwu_configure( 0x0200|0x0001, LLWU_PIN_RISING, LLWU_ME_WUME0_MASK);//lptmr is wume0 manual page 76
}
/*!
* @brief initializes LLWU module
*/
void llwu_init(void)
{
/* Configure the interrupt vector for the interrupt handler */
INT_SYS_InstallHandler(LLW_IRQn, &llwu_isr);
/* Enable the IRQs */
INT_SYS_EnableIRQ(LLW_IRQn);
/* Configure the interrupt vector for the interrupt handler */
INT_SYS_InstallHandler(LPTimer_IRQn, &demo_lptmr_isr);
/*
* TWR_K22F120M and TWR_K64F120M: SW1,PTC6 LLWU_P10
* FRDM_K64F120M: SW2,PTC6 LLWU_P10
* FRDM_K22F120M: SW2,PTC1 LLWU_P6
*/
llwu_configure(LLWU_PIN_NUM, kLlwuExternalPinFallingEdge, kLlwuWakeupModule0);
}
int main (void)
{
char ch;
char low_power_mode = MODE_SELECT;
SMC_PMPROT = SMC_PMPROT_ALLS_MASK | SMC_PMPROT_AVLLS_MASK | SMC_PMPROT_AVLP_MASK ;
#ifdef CMSIS // If we are conforming to CMSIS, we need to call start here
start();
#endif
print_llwu_status();
gpio_init();
rtc_init(); // driven by 32kHz external oscillator //
vfnLCD_Init();
vfnLCD_Write_Msg("1234");
PORTC_PCR3 = PORT_PCR_MUX(1) | PORT_PCR_PE_MASK | PORT_PCR_PS_MASK;
enable_irq(INT_LLW-16);
llwu_configure(0x0080,0x02,LLWU_ME_WUME5_MASK); //M5= RTC Alarm, M7 RTC seconds
//check if it comes from VLLx mode
if (PMC_REGSC % PMC_REGSC_ACKISO_MASK)
{
if (last_gpio_status&0x01) LED1_ON; else LED1_OFF; //configure GPIO pin with latest state
PMC_REGSC |= PMC_REGSC_ACKISO_MASK; //write to release hold on I/O
last_gpio_status ^= 0x01; //update state for next work
}
printf("\n\rRunning the lcd_rtc_lowpower project.\n\r");
// wait 3 seconds before start entering in low power mode
while (rtc_seconds_isrv_count<3){};
while(1)
{
LED2_TOGGLE;
ch= (char)RTC_TSR;
sprintf(gu8USB_Buffer,"%4i",ch );
vfnLCD_Write_Msg(gu8USB_Buffer);
printf("\n\r llwu_isrv_counter = %i, rtc_isrv_counter=%i ",llwu_isrv_counter, rtc_isrv_counter );
printf(" "); //delay
switch (low_power_mode)
{
case MODE_WAIT:
enter_wait();
printf("\n\r exit from WAIT");
break;
case MODE_STOP:
/* 0x00 = STOP - Normal Stop Mode
0x40 = PSTOP1 - Partial Stop with both system and bus clocks disabled
0x80 = PSTOP2 - Partial Stop with system clock disabled and bus clock enabled
*/
enter_stop(0x00);
printf("\n\r exit from STOP");
break;
case MODE_LLS:
MCG_C6 &= ~MCG_C6_CME0_MASK; //Disable Clock Monitor before entering in low power mode LLS, VLSSx
enter_lls();
op_mode = what_mcg_mode();
if(op_mode==PBE)
{
mcg_clk_hz = pbe_pee(CLK0_FREQ_HZ);
MCG_C6 |= MCG_C6_CME0_MASK;
}
printf("\n\r exit from LLS");
break;
case MODE_VLLS3:
MCG_C6 &= ~MCG_C6_CME0_MASK;
enter_vlls3();
//Note: exit from VLLSx mode is through RESET PMC_REGSC_ACKISO is set
break;
// VLLS2 mode not supported on KL46
case MODE_VLLS1:
MCG_C6 &= ~MCG_C6_CME0_MASK;
enter_vlls1(); //In VLLS1 and VLLS0 no SRAM is retained.
//Note: exit from VLLSx mode is through RESET PMC_REGSC_ACKISO is set
break;
default:
}
}
}
int main (void)
{
uint32_t execution_cycle; //actual execution cycle
char ch;
#ifdef CMSIS // If we are conforming to CMSIS, we need to call start here
start();
#endif
printf("\n\rRunning the LQRUG_bme_ex2 project.\n\r");
if (RCM_SRS0 & RCM_SRS0_WAKEUP_MASK)
{
printf("Wakeup initialization flow\n\r");
systick_init();
cnt_start_value = SYST_CVR;
Init_BME_GPIO();
ADC_BME_Trigger();
//Set LPTMR to timeout about 1 second
Lptmr_BME_Init(1000, LPOCLK);
ADC_BME_Init();
Calibrate_BME_ADC();
ADC_BME_Init();
ADC_Start(ADC0_CHANB);
// Enable the ADC interrupt in NVIC
#ifdef CMSIS
enable_irq(ADC0_IRQn) ; // ready for this interrupt.
enable_irq(LPTimer_IRQn);
#else
enable_irq(ADC0_irq_no) ; // ready for this interrupt.
enable_irq(LPTMR0_irq_no);
#endif
cnt_end_value = SYST_CVR;
execution_cycle = cnt_start_value - cnt_end_value - overhead;
systick_disable();
#ifdef DEBUG_PRINT
printf("Systick start value: 0x%x\n\r", cnt_start_value);
printf("Systick end value: 0x%x\n\r", cnt_end_value);
printf("Actual execution cycle for initialization phase in normal C code: 0x%x\n\r", execution_cycle);
#endif
}
else
{
printf("Normal initialization flow\n\r"); //make sure the two printf has the same characters to output
systick_init();
cnt_start_value = SYST_CVR;
Init_GPIO();
ADC_Trigger();
//Set LPTMR to timeout about 1 second
Lptmr_Init(1000, LPOCLK);
ADC_Init();
Calibrate_ADC();
ADC_Init();
ADC_Start(ADC0_CHANB);
// Enable the ADC interrupt in NVIC
#ifdef CMSIS
enable_irq(ADC0_IRQn) ; // ready for this interrupt.
enable_irq(LPTimer_IRQn);
#else
enable_irq(ADC0_irq_no) ; // ready for this interrupt.
enable_irq(LPTMR0_irq_no);
#endif
cnt_end_value = SYST_CVR;
execution_cycle = cnt_start_value - cnt_end_value - overhead;
systick_disable();
#ifdef DEBUG_PRINT
printf("Systick start value: 0x%x\n\r", cnt_start_value);
printf("Systick end value: 0x%x\n\r", cnt_end_value);
printf("Actual execution cycle for initialization phase in normal C code: 0x%x\n\r", execution_cycle);
#endif
}
Lptmr_Start();
#ifndef FREEDOM
printf("ADC conversion for potentiometer started, press any key to stop ADC conversion\n\r");
#else
printf("No potentiometer or LED on FREEDOM board, press any key to stop ADC conversion\n\r");
#endif
while(!char_present())
{
#ifndef FREEDOM
if (cycle_flags == ADC0A_DONE)
{
printf("\r R0A=%8d",result0A);
cycle_flags &= ~ADC0A_DONE ;
}
#endif
}
in_char(); //Read out any available characters
ADC_Stop();
printf("ADC conversion stopped, press 'l' to enter VLLS1 mode\n\r");
#ifndef FREEDOM
printf("Press SW3 or SW4(Reset button) on TWR-KL25Z48M to exit VLLS1 mode\n\r");
#else
printf("Press SW1(Reset button) on FREEDOM board to exit VLLS1 mode\n\r");
#endif
while(1)
{
ch = in_char();
//out_char(ch);
if(ch != 'l')
printf("Incorrect character input, Press 'l' to enter VLLS1 mode\n\r");
else
break;
}
llwu_configure(0x0080/*PTC3*/, LLWU_PIN_FALLING, 0x0);
/* Configure SW3 - init for GPIO PTC3/LLWU_P7/UART1_RX/FTM0_CH2/CLKOUT*/
PORTC_PCR3 = ( PORT_PCR_MUX(1) |
PORT_PCR_PE_MASK |
PORT_PCR_PFE_MASK |
PORT_PCR_PS_MASK);
enter_vlls1();
}
void LLWU_Init(void)
{
enable_irq(LLWU_irq_no);
// llwu_configure(0x0080/*PTC3*/, LLWU_PIN_RISING, 0x1);
llwu_configure(0x0000, LLWU_PIN_RISING, 0x1);
}