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Add guard to avoid re-enabling the receiver. (#247)

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This commit is contained in:
Jonathan Hui
2016-07-06 18:54:10 -07:00
committed by GitHub
parent a7d69c1726
commit ee2922b6fb
1 changed files with 13 additions and 6 deletions
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examples/platforms/cc2538/radio.c
+13 -6
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@@ -85,15 +85,20 @@ typedef enum PhyState
} PhyState;
static PhyState sState;
static bool sIsReceiverEnabled = false;
void enableReceiver(void)
{
// flush rxfifo
HWREG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISFLUSHRX;
HWREG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISFLUSHRX;
if (!sIsReceiverEnabled)
{
// flush rxfifo
HWREG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISFLUSHRX;
HWREG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISFLUSHRX;
// enable receiver
HWREG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISRXON;
// enable receiver
HWREG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISRXON;
sIsReceiverEnabled = true;
}
}
void disableReceiver(void)
@@ -109,6 +114,8 @@ void disableReceiver(void)
// disable receiver
HWREG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISRFOFF;
}
sIsReceiverEnabled = false;
}
void setChannel(uint8_t channel)
@@ -358,7 +365,7 @@ void readFrame(void)
// check for rxfifo overflow
if ((HWREG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_FIFOP) != 0 &&
(HWREG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_FIFO) != 0)
(HWREG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_FIFO) == 0)
{
HWREG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISFLUSHRX;
HWREG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISFLUSHRX;