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HARD FAULT: Add sanity check to sx126x driver when handling retention list #72

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HARD FAULT: Add sanity check to sx126x driver when handling retention list #72

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11 changes: 9 additions & 2 deletions lbm_lib/smtc_modem_core/radio_drivers/sx126x_driver/src/sx126x.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1413,8 +1413,15 @@ sx126x_status_t sx126x_add_registers_to_retention_list( const void* context, con

if( status == SX126X_STATUS_OK )
{
const uint8_t initial_nb_of_registers = buffer[0];
uint8_t* register_list = &buffer[1];
uint8_t initial_nb_of_registers = buffer[0];
uint8_t* register_list = &buffer[1];

// sanity check - in case invalid value read -> set to zero
if(initial_nb_of_registers > SX126X_MAX_NB_REG_IN_RETENTION)
{
initial_nb_of_registers = 0;
buffer[0] = 0;
}

for( uint8_t index = 0; index < register_nb; index++ )
{
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