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HARD FAULT : Add sanity check to sx126x driver when handling retention list #1615

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HARD FAULT : Add sanity check to sx126x driver when handling retention list #1615

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9 changes: 8 additions & 1 deletion src/radio/sx126x/radio.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1119,9 +1119,16 @@ void RadioAddRegisterToRetentionList( uint16_t registerAddress )
// Read the address and registers already added to the list
SX126xReadRegisters( REG_RETENTION_LIST_BASE_ADDRESS, buffer, 9 );

const uint8_t nbOfRegisters = buffer[0];
uint8_t nbOfRegisters = buffer[0];
uint8_t* registerList = &buffer[1];

// in case more than maximum read -> set to 0
if(nbOfRegisters > MAX_NB_REG_IN_RETENTION)
{
nbOfRegisters = 0;
buffer[0] = 0; // set also to zero - invalid value was read-out
}

// Check if the register given as parameter is already added to the list
for( uint8_t i = 0; i < nbOfRegisters; i++ )
{
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