Hi,
I'm currently working on a project that requires a LLWU pin to wakeup the KL27 from LLS STOP mode. When in sleepdeep mode I trigger the interrupt with a pushbutton (with pullup), The LLWU pin goes low. But instead of running my LLWU interrupt handler it fires the DefaulISR(). I Know this because I toggle a LED inside this ISR.
I have struggled with this for days now and I'm not able find any "clear" answers online..
I using KDS 3.2.0 & PE with KSDK 1.3.0 to setup LLWU pin 8 (GPIOC, pin 4) as a wakeup source. Negative edge triggered.
This is the setup code generated by PE:
From hardware_init.c
void hardware_init(void) {
/* Enable clock for PORTs */
SIM_HAL_EnableClock(SIM,kSimClockGatePortA);
SIM_HAL_EnableClock(SIM,kSimClockGatePortB);
SIM_HAL_EnableClock(SIM,kSimClockGatePortC);
SIM_HAL_EnableClock(SIM,kSimClockGatePortD);
SIM_HAL_EnableClock(SIM,kSimClockGatePortE);
/* Setup board clock source. */
g_xtal0ClkFreq = 0U; /* System oscillator 0 is not enabled */
init_coredebug_pins(CoreDebug_IDX);
init_gpio_pins(GPIOA_IDX);
init_gpio_pins(GPIOC_IDX);
init_gpio_pins(GPIOD_IDX);
init_gpio_pins(GPIOE_IDX);
init_i2c_pins(I2C0_IDX);
init_i2c_pins(I2C1_IDX);
init_llwu_pins(LLWU_IDX);
init_lpuart_pins(LPUART1_IDX);
init_scb_pins(SCB_IDX);
init_uart_pins(UART2_IDX);
}
From Cpu.c - Components_Init()
/*! gpio_llwu_pins Auto initialization start */
GPIO_DRV_Init(gpio_llwu_pins_InpWakup,NULL);
/*! gpio_llwu_pins Auto initialization end */
/*! pwrMan1 Auto initialization start */
NVIC_SetPriority(LLWU_IRQn, 1U);
OSA_InstallIntHandler(LLWU_IRQn, &pwrMan1_llwuIRQHandler);
POWER_SYS_Init(powerConfigsArr, 1U, NULL , 0U);
POWER_SYS_SetWakeupPin(kPowerManagerWakeupPin8, kLlwuExternalPinFallingEdge, NULL);
INT_SYS_EnableIRQ(LLWU_IRQn);
The Interrupt handler is automatically added to Events.c and the prototype in Events.h
void pwrMan1_llwuIRQHandler(void)
{
/* Write your code here. For example clear LLWU wake up flags ... */
//CheckModeButton();
POWER_SYS_ClearWakeupPinFlag(kPowerManagerWakeupPin8);
GPIO_DRV_ClearPinOutput(LED_GREEN2);
}
What am I missing?
Med vennlig hilsen,
Thomas Haugen
Software Development Engineer
GSM: +47 930 35 863
E-mail: thomas.haugen@7sense.no<mailto:thomas.haugen@7sense.no>
7Sense Technologies AS
Kongeveien 73 Tel: +47 33 08 44 00
3188 Horten Fax: +47 33 08 44 01
Norway E-mail: sales@7sense.no<mailto:sales@7sense.no>
