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stm32-sx1280: use separate rx and tx buffers

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This commit is contained in:
Matthias Ringwald 2020-08-11 23:46:20 +02:00
parent 2277d11237
commit 4e236644c0
1 changed files with 17 additions and 6 deletions
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23
port/stm32-sx1280/controller/ll_sx1280.c
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@ -65,6 +65,12 @@ extern LPTIM_HandleTypeDef hlptim1;
#define ADV_MAX_PAYLOAD (6+6+22)
#define LL_MAX_PAYLOAD 37
// split 256 bytes data buffer into 2 rx and 2 tx buffers
#define SX1280_RX0_OFFSET 0
#define SX1280_RX1_OFFSET 64
#define SX1280_TX0_OFFSET 128
#define SX1280_TX1_OFFSET 192
// set output power in dBM, range [-18..+13] dBm - Bluetooth LE max is 10 dBM
#define TX_OUTPUT_POWER 10
@ -376,7 +382,8 @@ static void send_adv(void){
memcpy(&adv_buffer[2], ctx.bd_addr_le, 6);
memcpy(&adv_buffer[8], ctx.adv_data, ctx.adv_len);
uint16_t packet_size = 2 + adv_buffer[1];
Radio.SendPayload( adv_buffer, packet_size, ( TickTime_t ){ RADIO_TICK_SIZE_1000_US, 1 } );
SX1280HalWriteBuffer( SX1280_TX0_OFFSET, adv_buffer, packet_size );
SX1280SetTx( ( TickTime_t ){ RADIO_TICK_SIZE_1000_US, 1 } );
}
static void receive_adv_response(void){
@ -617,12 +624,16 @@ static void radio_on_rx_done(void ){
}
// Read complete buffer
SX1280HalReadBuffer( 0, &rx_packet->header, 2 + LL_MAX_PAYLOAD );
uint16_t max_packet_len;
if (ll_state == LL_STATE_CONNECTED){
// mark as data packet
rx_packet->flags |= LL_PDU_FLAG_DATA_PDU;
max_packet_len = 2 + 27;
} else {
rx_packet->flags = 0;
max_packet_len = 2 + LL_MAX_PAYLOAD;
}
SX1280HalReadBuffer( SX1280_RX0_OFFSET, &rx_packet->header, max_packet_len);
// queue received packet
btstack_linked_queue_enqueue(&ctx.rx_queue, (btstack_linked_item_t *) rx_packet);
@ -655,11 +666,11 @@ static void radio_on_rx_done(void ){
if (ctx.tx_pdu == NULL){
empty_packet[0] = (ctx.transmit_sequence_number << 3) | (ctx.next_expected_sequence_number << 2) | PDU_DATA_LLID_DATA_CONTINUE;
empty_packet[1] = 0;
Radio.SetPayload(empty_packet, 2);
SX1280HalWriteBuffer( SX1280_TX0_OFFSET, empty_packet, 2 );
} else {
uint8_t md = btstack_linked_queue_empty(&ctx.tx_queue) ? 0 : 1;
ctx.tx_pdu->header |= (md << 4) | (ctx.transmit_sequence_number << 3) | (ctx.next_expected_sequence_number << 2);
Radio.SetPayload((uint8_t *) &ctx.tx_pdu->header, 2 + ctx.tx_pdu->len);
SX1280HalWriteBuffer( SX1280_TX0_OFFSET, (uint8_t *) &ctx.tx_pdu->header, 2 + ctx.tx_pdu->len );
}
// preamble (1) + aa (4) + header (1) + len (1) + payload (len) + crc (3) -- ISR handler ca. 50 us
@ -758,7 +769,7 @@ void ll_radio_on(void){
Radio.SetStandby( STDBY_RC );
Radio.SetPacketType( modulationParams.PacketType );
Radio.SetModulationParams( &modulationParams );
Radio.SetBufferBaseAddresses( 0x00, 0x00 );
Radio.SetBufferBaseAddresses( SX1280_TX0_OFFSET, SX1280_RX0_OFFSET );
Radio.SetTxParams( TX_OUTPUT_POWER, RADIO_RAMP_02_US );
// Go back to Frequcency Synthesis Mode, reduces transition time between Rx<->TX