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Clear interrupt flags selectively
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
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@ -478,8 +478,8 @@ cc26xx_rf_cpe1_isr(void)
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}
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}
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/* Clear interrupt flags */
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HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0x0;
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/* Clear INTERNAL_ERROR interrupt flag */
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HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0x7FFFFFFF;
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ENERGEST_OFF(ENERGEST_TYPE_IRQ);
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}
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@ -500,17 +500,25 @@ cc26xx_rf_cpe0_isr(void)
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ti_lib_int_master_disable();
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if(HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) & RX_FRAME_IRQ) {
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/* Clear the RX_ENTRY_DONE interrupt flag */
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HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0xFF7FFFFF;
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process_poll(&rf_core_process);
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}
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if(RF_CORE_DEBUG_CRC) {
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if(HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) & RX_NOK_IRQ) {
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/* Clear the RX_NOK interrupt flag */
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HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0xFFFDFFFF;
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rx_nok_isr();
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}
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}
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/* Clear interrupt flags */
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HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0x0;
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if(HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) &
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(IRQ_LAST_FG_COMMAND_DONE | IRQ_LAST_COMMAND_DONE)) {
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/* Clear the two TX-related interrupt flags */
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HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0xFFFFFFF5;
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}
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ti_lib_int_master_enable();
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ENERGEST_OFF(ENERGEST_TYPE_IRQ);
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