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Clear interrupt flags selectively

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As discussed in #1294, every time a CC13xx/CC26xx RF interrupt fires, we clear all interrupt flags unconditionally. This may result in missed events. This patch fixes this bug by clearing only the flag that triggered the interrupt in the first place.

Fixes #1294
This commit is contained in:
George Oikonomou 2015-10-24 20:01:31 +01:00
parent 566b251797
commit 8636a28248
1 changed files with 12 additions and 4 deletions
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16
cpu/cc26xx-cc13xx/rf-core/rf-core.c
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@ -478,8 +478,8 @@ cc26xx_rf_cpe1_isr(void)
}
}
/* Clear interrupt flags */
HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0x0;
/* Clear INTERNAL_ERROR interrupt flag */
HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0x7FFFFFFF;
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
}
@ -500,17 +500,25 @@ cc26xx_rf_cpe0_isr(void)
ti_lib_int_master_disable();
if(HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) & RX_FRAME_IRQ) {
/* Clear the RX_ENTRY_DONE interrupt flag */
HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0xFF7FFFFF;
process_poll(&rf_core_process);
}
if(RF_CORE_DEBUG_CRC) {
if(HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) & RX_NOK_IRQ) {
/* Clear the RX_NOK interrupt flag */
HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0xFFFDFFFF;
rx_nok_isr();
}
}
/* Clear interrupt flags */
HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0x0;
if(HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) &
(IRQ_LAST_FG_COMMAND_DONE | IRQ_LAST_COMMAND_DONE)) {
/* Clear the two TX-related interrupt flags */
HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0xFFFFFFF5;
}
ti_lib_int_master_enable();
ENERGEST_OFF(ENERGEST_TYPE_IRQ);