Hello.
I need some advice - I'm a beginner. I tested the transition to sleep mode via __WFI for the nrf52840 Dongle (VS code, SDK v3.3.0). I need some advice - I'm a beginner. For nrf52840 Dongle (VS code, SDK v3.3.0) I tested sleep mode via __WFI. Sleep mode works, but I had to disable interrupts from RTC1. I solve the wakeup with an interrupt from RTC0 - I attach an code. In sleep mode the consumption is about 1.6mA. Can you advise me what and how to turn off (setup) so that the consumption is as low as possible when SYSTEM ON. I'll need to go back after the circuit wakes up. Thank you.
#include <zephyr/kernel.h>
#include <zephyr/drivers/gpio.h>
#define PORT0_NI DT_NODELABEL(gpio0)
#define PORT1_NI DT_NODELABEL(gpio1)
const struct device *port0 = DEVICE_DT_GET(PORT0_NI);
const struct device *port1 = DEVICE_DT_GET(PORT1_NI);
#define LED_G 6
#define Butt 6
bool F_Butt_Off;
uint16_t Count_Butt;
// static void TIMER1_IRQHandler(void)
// {
// if(NRF_TIMER1->EVENTS_COMPARE[0] != 0)
// {
// NRF_TIMER1->EVENTS_COMPARE[0]=0;
// gpio_pin_toggle(port0,LED_G);
// printf("Ubehlo 5 sekund.\n");
// }
// }
// static void Start_Timer1(void)
// {
// NRF_TIMER1->TASKS_CLEAR = 1;
// NRF_TIMER1->MODE = TIMER_MODE_MODE_Timer;
// NRF_TIMER1->SHORTS = TIMER_SHORTS_COMPARE0_CLEAR_Enabled; // automaticky vynuluje TIMER4 po compare ???
// NRF_TIMER1->BITMODE = TIMER_BITMODE_BITMODE_24Bit;
// NRF_TIMER1->PRESCALER = 9; // nie je možné použiť v Counter mode = 512
// NRF_TIMER1->CC[0] = 156250; // set value compare register 0 = 16MHz / 156250 / 512 = 5s = 0,2Hz
// NRF_TIMER1->INTENSET = (TIMER_INTENCLR_COMPARE0_Enabled << TIMER_INTENCLR_COMPARE0_Pos); // enable interrupt compare CC[0]
// IRQ_DIRECT_CONNECT(TIMER1_IRQn, IRQ_PRIO_LOWEST, TIMER1_IRQHandler, 0);
// irq_enable(TIMER1_IRQn);
// NRF_TIMER1->TASKS_START=1;
// }
static void RTC0_IRQHandler(void)
{
if(NRF_RTC0->EVENTS_COMPARE[1]!=0)
{
NRF_RTC0->EVENTS_COMPARE[1]=0;
NRF_RTC0->TASKS_CLEAR=1;
// gpio_pin_toggle(port0,LED_G);
//gpio_pin_set(port0,LED_G,0);
//printf("RTC0 IRQ 5 sec.\n");
// uint32_t RTC0_Value;
// RTC0_Value = NRF_RTC0->COUNTER;
// printk("RTC0 = %d\n\r", RTC0_Value);
}
}
static void Start_RTC0(void)
{
NRF_RTC0->TASKS_STOP=1;
NRF_RTC0->TASKS_CLEAR=1;
NRF_RTC0->PRESCALER=0;
NRF_RTC0->INTENSET=(RTC_INTENSET_COMPARE1_Enabled << RTC_INTENSET_COMPARE1_Pos);
// NRF_RTC0->INTENSET=( 1<<16);
NRF_RTC0->EVTENSET=(RTC_EVTENSET_COMPARE1_Enabled << RTC_EVTENSET_COMPARE1_Pos);
//NRF_RTC0->EVTENSET=(1<<16);
NRF_RTC0->CC[1]=163840; //163840;
IRQ_DIRECT_CONNECT(RTC0_IRQn, IRQ_PRIO_LOWEST, RTC0_IRQHandler,0);
irq_enable(RTC0_IRQn);
NRF_RTC0->TASKS_START=1;
}
int main(void)
{
gpio_pin_configure(port0, LED_G, GPIO_OUTPUT);
// Nastavenie pre Port1 - pin 6 = P1.06, Priamo register PIN_CFG
NRF_P1->PIN_CNF[Butt] = 0b1100;
gpio_pin_set(port0, LED_G, 0);
// __disable_irq();
irq_disable(RTC1_IRQn);
Start_RTC0();
// Start_Timer1();
while(1)
{
if(gpio_pin_get(port1, Butt))
{
F_Butt_Off=1;
Count_Butt=0;
//gpio_pin_set(port0, LED_G, 1);
}
else
{
if(++Count_Butt>32000)
{
Count_Butt=32000;
//gpio_pin_set(port0, LED_G, 0);
}
}
if(Count_Butt==32000)
{
if(F_Butt_Off)
{
F_Butt_Off=0;
// gpio_pin_toggle(port0,LED_G);
NRF_RTC0->TASKS_CLEAR=1;
gpio_pin_set(port0,LED_G, 1);
NRF_P1->PIN_CNF[Butt] = 0;
//printk("WFI activated.\n");
uint32_t RTC0_Value;
RTC0_Value = NRF_RTC0->COUNTER;
//printk("RTC0 = %d\n\r", RTC0_Value);
__WFI();
RTC0_Value = NRF_RTC0->COUNTER;
//printk("WakeUP - RTC0 = %d\n\r", RTC0_Value);
gpio_pin_set(port0,LED_G, 0);
NRF_P1->PIN_CNF[Butt] = 0b1100;
}
}
// if(NRF_RTC0->EVENTS_COMPARE[1]!=0)
// {
// NRF_RTC0->EVENTS_COMPARE[1]=0;
// NRF_RTC0->TASKS_CLEAR=1;
// uint32_t RTC0_Value;
// RTC0_Value = NRF_RTC0->COUNTER;
// // k_msleep(100);
// printk("RTC0 = %d\n\r", RTC0_Value);
// gpio_pin_toggle(port0,LED_G);
// // k_msleep(100);
// printk("Ubehlo 5 sekund.\n");
// }
}
return 0;
}