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cc2538: gpio: Clear the power-up interrupts in the port ISRs

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The pending GPIO power-up interrupts have to be cleared in the ISRs in order not
to re-trigger the interrupts and the wake-up events.

The power-up interrupts of all pins are cleared for each port in the
corresponding port ISR. This is done after calling the registered callbacks so
that the callbacks can know which pin woke up the SoC. This is done after
clearing the regular interrupt in order to avoid getting a new wake-up interrupt
without the regular interrupt in the case of a new wake-up edge occurring
between the two clears.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
This commit is contained in:
Benoît Thébaudeau 2013-11-26 22:20:05 +01:00
parent 44a5c76884
commit 1a696eb123
1 changed files with 4 additions and 0 deletions
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4
cpu/cc2538/dev/gpio.c
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@ -90,6 +90,7 @@ gpio_port_a_isr()
notify(REG(GPIO_A_BASE | GPIO_MIS), GPIO_A_NUM);
GPIO_CLEAR_INTERRUPT(GPIO_A_BASE, 0xFF);
GPIO_CLEAR_POWER_UP_INTERRUPT(GPIO_A_NUM, 0xFF);
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
}
@ -105,6 +106,7 @@ gpio_port_b_isr()
notify(REG(GPIO_B_BASE | GPIO_MIS), GPIO_B_NUM);
GPIO_CLEAR_INTERRUPT(GPIO_B_BASE, 0xFF);
GPIO_CLEAR_POWER_UP_INTERRUPT(GPIO_B_NUM, 0xFF);
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
}
@ -120,6 +122,7 @@ gpio_port_c_isr()
notify(REG(GPIO_C_BASE | GPIO_MIS), GPIO_C_NUM);
GPIO_CLEAR_INTERRUPT(GPIO_C_BASE, 0xFF);
GPIO_CLEAR_POWER_UP_INTERRUPT(GPIO_C_NUM, 0xFF);
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
}
@ -135,6 +138,7 @@ gpio_port_d_isr()
notify(REG(GPIO_D_BASE | GPIO_MIS), GPIO_D_NUM);
GPIO_CLEAR_INTERRUPT(GPIO_D_BASE, 0xFF);
GPIO_CLEAR_POWER_UP_INTERRUPT(GPIO_D_NUM, 0xFF);
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
}