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sx1280: use explicit empty tx packet

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This commit is contained in:
Matthias Ringwald 2021-05-01 15:07:54 +02:00
parent ee00544b41
commit b907bb6fc4
1 changed files with 8 additions and 6 deletions
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14
chipset/sx128x/ll_sx1280.c
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@ -369,6 +369,7 @@ static btstack_memory_pool_t ll_pdu_pool;
// single ll control response
static ll_pdu_t ll_tx_packet;
static ll_pdu_t ll_empty_packet;
// Link Layer State
static ll_state_t ll_state;
@ -756,10 +757,10 @@ static void radio_prepare_auto_tx(uint16_t packet_end_ticks, uint8_t rx_len){
// setup empty packet in ll buffer if no tx packet was preloaded
if (ctx.num_tx_pdus_on_controller == 0) {
ctx.tx_buffer_pdu[ctx.next_tx_buffer] = &ll_tx_packet;
ctx.tx_buffer_pdu[ctx.next_tx_buffer] = &ll_empty_packet;
ctx.num_tx_pdus_on_controller++;
ll_tx_packet.header = PDU_DATA_LLID_DATA_CONTINUE;
ll_tx_packet.len = 0;
ll_empty_packet.header = PDU_DATA_LLID_DATA_CONTINUE;
ll_empty_packet.len = 0;
}
// setup pdu header
@ -850,10 +851,11 @@ static void radio_on_rx_done(void ){
bool tx_acked = ctx.transmit_sequence_number != next_expected_sequence_number;
if (tx_acked){
if (ctx.num_tx_pdus_on_controller > 0){
btstack_assert(ctx.tx_buffer_pdu[ctx.next_tx_buffer] != NULL);
ll_pdu_t * acked_pdu = ctx.tx_buffer_pdu[ctx.next_tx_buffer];
btstack_assert(acked_pdu != NULL);
// if non link-layer packet, free buffer and report as completed
if (ctx.tx_buffer_pdu[ctx.next_tx_buffer] != &ll_tx_packet){
btstack_memory_ll_pdu_free(ctx.tx_buffer_pdu[ctx.next_tx_buffer]);
if ((acked_pdu != &ll_tx_packet) && (acked_pdu != &ll_empty_packet)){
btstack_memory_ll_pdu_free(acked_pdu);
ctx.tx_buffer_pdu[ctx.next_tx_buffer] = NULL;
ctx.num_completed++;
}