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stm32-sx1280: fix check for latest tx packet

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This commit is contained in:
Matthias Ringwald 2020-09-24 22:55:28 +02:00
parent c3c2769224
commit f6933f5711
1 changed files with 10 additions and 4 deletions
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14
chipset/sx128x/ll_sx1280.c
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@ -271,6 +271,9 @@ static struct {
// start of current connection event
volatile uint16_t anchor_ticks;
// latest time to send tx packet before sync hop
volatile uint16_t conn_latest_tx_ticks;
// timeout for sync relative to anchor
volatile uint16_t conn_sync_hop_ticks;
@ -533,6 +536,10 @@ static void ctx_set_conn_interval(uint16_t conn_interval_1250us){
ctx.conn_interval_us = ctx.conn_interval_1250us * 1250;
ctx.conn_interval_ticks = US_TO_TICKS(ctx.conn_interval_us);
ctx.conn_sync_hop_ticks = US_TO_TICKS(ctx.conn_interval_us - SYNC_HOP_DELAY_US);
// latest time to send a packet before getting ready for next cnonection event
uint16_t max_packet_time_incl_ifs_us = 500;
ctx.conn_latest_tx_ticks = US_TO_TICKS(ctx.conn_interval_us - SYNC_HOP_DELAY_US - max_packet_time_incl_ifs_us);
}
static void ll_terminate(void){
@ -726,12 +733,11 @@ static void radio_on_rx_done(void ){
ctx.time_without_any_packets_us = 0;
// check clock if we can sent a full packet before sync hop
int16_t event_time = packet_end_ticks - ctx.anchor_ticks;
uint16_t max_packet_time_incl_ifs_us = 500;
if (event_time > (ctx.conn_interval_us - SYNC_HOP_DELAY_US - max_packet_time_incl_ifs_us)){
int16_t now_ticks = packet_end_ticks - ctx.anchor_ticks;
if (now_ticks > ctx.conn_latest_tx_ticks){
// abort sending of next packet / AutoTx
Radio.SetFs();
printf("Close to Sync hop\n");
printf("Close before Sync hop\n");
// get rx pdu
radio_fetch_rx_pdu();