stm32f407
i code in RTEMS, system sleep function will call __wfi , i can not wake up from sleep by pressing key
rtems_isr EINT95_handler(rtems_vector_number vector)
{
if(EXIT_PR & 0x200)
{
printk("exit 9 hap\n");
int pin = STM32F4_GPIO_PIN(0,9); // pa9
bool val;
val = stm32f4_gpio_get_input(pin);
volatile int j = 20000;
for(; j > 0; j--) j = j;
//rtems_counter_delay_nanoseconds(5000000);
if(val == stm32f4_gpio_get_input(pin))
{
f_key_pressed = 1;
printk("key1\n");
}
EXIT_PR = (1<<9);
}
}
KEY init code is here https://gist.github.com/goog/e81f68b3392fe7fc6730239c48305cbc
SLEEPONEXIT bit is 0
