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nrf5x: use mutex to protect outgoing event buffer

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This commit is contained in:
Matthias Ringwald 2016-03-19 22:48:24 +01:00
parent 211c43a022
commit 666f0f1a25
1 changed files with 11 additions and 6 deletions
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17
port/nrf5x/main.c
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@ -57,7 +57,8 @@ static uint8_t rx_adv_buffer[2 + MAXLEN];
static void (*packet_handler)(uint8_t packet_type, uint8_t *packet, uint16_t size);
static hci_transport_t hci_transport;
static uint8_t hci_outgoing_event[258];
static uint8_t hci_outgoing_event_ready;
static volatile uint8_t hci_outgoing_event_ready;
static volatile uint8_t hci_outgoing_event_free;
static btstack_data_source_t hci_transport_data_source;
// Link Layer State
@ -258,13 +259,14 @@ void radio_dump_packet(void){
void RADIO_IRQHandler(void){
if (ll_state == LL_STATE_SCANNING && NRF_RADIO->EVENTS_END){
// IRQ only triggered on EVENTS_END so far
NRF_RADIO->EVENTS_END = 0;
if (ll_state == LL_STATE_SCANNING){
// adv received
// check if outgoing buffer available
if (hci_outgoing_event_ready){
// ... for now, we just throw the adv away and try to receive the next one
} else {
if (hci_outgoing_event_free){
int len = rx_adv_buffer[1] & 0x3f;
hci_outgoing_event[0] = HCI_EVENT_LE_META;
hci_outgoing_event[1] = 11 + len - 6;
@ -277,11 +279,12 @@ void RADIO_IRQHandler(void){
memcpy(&hci_outgoing_event[13], &rx_adv_buffer[8], len - 6);
hci_outgoing_event[13 + len - 6] = 0; // TODO: measure RSSI and set here
hci_outgoing_event_ready = 1;
} else {
// ... for now, we just throw the adv away and try to receive the next one
}
// restart receiving
NRF_RADIO->TASKS_START = 1;
}
NRF_RADIO->EVENTS_END = 0;
}
static uint8_t random_generator_next(void){
@ -367,6 +370,7 @@ static int transport_run(btstack_data_source_t * ds){
if (hci_outgoing_event_ready){
hci_outgoing_event_ready = 0;
packet_handler(HCI_EVENT_PACKET, hci_outgoing_event, hci_outgoing_event[1]+2);
hci_outgoing_event_free = 1;
return 0;
}
return 0;
@ -481,6 +485,7 @@ int main(void)
init_timer();
radio_init();
hci_outgoing_event_free = 1;
// enable Radio IRQs
NVIC_SetPriority( RADIO_IRQn, 0 );