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Attach packet RSSI and SNR to packet queue entry structs. Disable ISR spinlocks on ESP32 until tested.

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This commit is contained in:
Mark Qvist 2024-10-11 16:29:17 +02:00
parent 1de5f3c796
commit 389745ad33
7 changed files with 86 additions and 47 deletions
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97
RNode_Firmware.ino
View File

@ -45,6 +45,8 @@ volatile bool serial_buffering = false;
#define MODEM_QUEUE_SIZE 4
typedef struct {
size_t len;
int rssi;
int snr_raw;
uint8_t data[];
} modem_packet_t;
static xQueueHandle modem_packet_queue = NULL;
@ -241,34 +243,31 @@ void lora_receive() {
}
}
#if MCU_VARIANT == MCU_ESP32
portMUX_TYPE update_lock = portMUX_INITIALIZER_UNLOCKED;
#endif
inline void kiss_write_packet() {
serial_write(FEND);
serial_write(CMD_DATA);
for (uint16_t i = 0; i < read_len; i++) {
#if MCU_VARIANT == MCU_ESP32
portENTER_CRITICAL(&update_lock);
#elif MCU_VARIANT == MCU_NRF52
#if MCU_VARIANT == MCU_NRF52
portENTER_CRITICAL();
#endif
uint8_t byte = pbuf[i];
#if MCU_VARIANT == MCU_ESP32
portEXIT_CRITICAL(&update_lock);
#elif MCU_VARIANT == MCU_NRF52
uint8_t byte = pbuf[i];
portEXIT_CRITICAL();
#else
uint8_t byte = pbuf[i];
#endif
if (byte == FEND) { serial_write(FESC); byte = TFEND; }
if (byte == FESC) { serial_write(FESC); byte = TFESC; }
serial_write(byte);
}
serial_write(FEND);
read_len = 0;
#if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
packet_ready = false;
#endif
#if MCU_VARIANT == MCU_ESP32
#if HAS_BLE
bt_flush();
@ -277,17 +276,24 @@ inline void kiss_write_packet() {
}
inline void getPacketData(uint16_t len) {
BaseType_t int_mask = taskENTER_CRITICAL_FROM_ISR();
while (len-- && read_len < MTU) {
pbuf[read_len++] = LoRa->read();
}
taskEXIT_CRITICAL_FROM_ISR(int_mask);
#if MCU_VARIANT != MCU_NRF52
while (len-- && read_len < MTU) {
pbuf[read_len++] = LoRa->read();
}
#else
BaseType_t int_mask = taskENTER_CRITICAL_FROM_ISR();
while (len-- && read_len < MTU) {
pbuf[read_len++] = LoRa->read();
}
taskEXIT_CRITICAL_FROM_ISR(int_mask);
#endif
}
void ISR_VECT receive_callback(int packet_size) {
#if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
BaseType_t int_mask;
BaseType_t int_mask;
#endif
if (!promisc) {
// The standard operating mode allows large
// packets with a payload up to 500 bytes,
@ -302,13 +308,12 @@ void ISR_VECT receive_callback(int packet_size) {
// This is the first part of a split
// packet, so we set the seq variable
// and add the data to the buffer
#if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
int_mask = taskENTER_CRITICAL_FROM_ISR();
#endif
read_len = 0;
#if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
taskEXIT_CRITICAL_FROM_ISR(int_mask);
#if MCU_VARIANT == MCU_NRF52
int_mask = taskENTER_CRITICAL_FROM_ISR(); read_len = 0; taskEXIT_CRITICAL_FROM_ISR(int_mask);
#else
read_len = 0;
#endif
seq = sequence;
#if MCU_VARIANT != MCU_ESP32 && MCU_VARIANT != MCU_NRF52
@ -322,15 +327,12 @@ void ISR_VECT receive_callback(int packet_size) {
// This is the second part of a split
// packet, so we add it to the buffer
// and set the ready flag.
#if MCU_VARIANT != MCU_ESP32 && MCU_VARIANT != MCU_NRF52
last_rssi = (last_rssi+LoRa->packetRssi())/2;
last_snr_raw = (last_snr_raw+LoRa->packetSnrRaw())/2;
#endif
getPacketData(packet_size);
seq = SEQ_UNSET;
ready = true;
@ -339,12 +341,10 @@ void ISR_VECT receive_callback(int packet_size) {
// same sequence id, so we must assume
// that we are seeing the first part of
// a new split packet.
#if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
int_mask = taskENTER_CRITICAL_FROM_ISR();
#endif
read_len = 0;
#if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
taskEXIT_CRITICAL_FROM_ISR(int_mask);
#if MCU_VARIANT == MCU_NRF52
int_mask = taskENTER_CRITICAL_FROM_ISR(); read_len = 0; taskEXIT_CRITICAL_FROM_ISR(int_mask);
#else
read_len = 0;
#endif
seq = sequence;
@ -363,12 +363,10 @@ void ISR_VECT receive_callback(int packet_size) {
if (seq != SEQ_UNSET) {
// If we already had part of a split
// packet in the buffer, we clear it.
#if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
int_mask = taskENTER_CRITICAL_FROM_ISR();
#endif
read_len = 0;
#if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
taskEXIT_CRITICAL_FROM_ISR(int_mask);
#if MCU_VARIANT == MCU_NRF52
int_mask = taskENTER_CRITICAL_FROM_ISR(); read_len = 0; taskEXIT_CRITICAL_FROM_ISR(int_mask);
#else
read_len = 0;
#endif
seq = SEQ_UNSET;
}
@ -398,6 +396,12 @@ void ISR_VECT receive_callback(int packet_size) {
modem_packet_t *modem_packet = (modem_packet_t*)malloc(sizeof(modem_packet_t) + read_len);
if(!modem_packet) { memory_low = true; return; }
// Get packet RSSI and SNR
#if MCU_VARIANT == MCU_ESP32
modem_packet->snr_raw = LoRa->packetSnrRaw();
modem_packet->rssi = LoRa->packetRssi(modem_packet->snr_raw);
#endif
// Send packet to event queue, but free the
// allocated memory again if the queue is
// unable to receive the packet.
@ -406,7 +410,6 @@ void ISR_VECT receive_callback(int packet_size) {
if (!modem_packet_queue || xQueueSendFromISR(modem_packet_queue, &modem_packet, NULL) != pdPASS) {
free(modem_packet);
}
#endif
}
} else {
@ -458,9 +461,7 @@ bool startRadio() {
getFrequency();
LoRa->enableCrc();
LoRa->onReceive(receive_callback);
lora_receive();
// Flash an info pattern to indicate
@ -1113,6 +1114,10 @@ void serialCallback(uint8_t sbyte) {
}
}
#if MCU_VARIANT == MCU_ESP32
portMUX_TYPE update_lock = portMUX_INITIALIZER_UNLOCKED;
#endif
void updateModemStatus() {
#if MCU_VARIANT == MCU_ESP32
portENTER_CRITICAL(&update_lock);
@ -1343,15 +1348,13 @@ void loop() {
#if MCU_VARIANT == MCU_ESP32
modem_packet_t *modem_packet = NULL;
if(modem_packet_queue && xQueueReceive(modem_packet_queue, &modem_packet, 0) == pdTRUE && modem_packet) {
memcpy(&pbuf, modem_packet->data, modem_packet->len);
read_len = modem_packet->len;
last_rssi = modem_packet->rssi;
last_snr_raw = modem_packet->snr_raw;
memcpy(&pbuf, modem_packet->data, modem_packet->len);
free(modem_packet);
modem_packet = NULL;
portENTER_CRITICAL(&update_lock);
last_rssi = LoRa->packetRssi();
last_snr_raw = LoRa->packetSnrRaw();
portEXIT_CRITICAL(&update_lock);
kiss_indicate_stat_rssi();
kiss_indicate_stat_snr();
kiss_write_packet();

8
sx126x.cpp
View File

@ -562,6 +562,14 @@ int ISR_VECT sx126x::packetRssi() {
return pkt_rssi;
}
int ISR_VECT sx126x::packetRssi(uint8_t pkt_snr_raw) {
// may need more calculations here
uint8_t buf[3] = {0};
executeOpcodeRead(OP_PACKET_STATUS_6X, buf, 3);
int pkt_rssi = -buf[0] / 2;
return pkt_rssi;
}
uint8_t ISR_VECT sx126x::packetSnrRaw() {
uint8_t buf[3] = {0};
executeOpcodeRead(OP_PACKET_STATUS_6X, buf, 3);

1
sx126x.h
View File

@ -36,6 +36,7 @@ public:
int parsePacket(int size = 0);
int packetRssi();
int packetRssi(uint8_t pkt_snr_raw);
int currentRssi();
uint8_t packetRssiRaw();
uint8_t currentRssiRaw();

17
sx127x.cpp
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@ -230,6 +230,23 @@ uint8_t sx127x::packetRssiRaw() {
return pkt_rssi_value;
}
int ISR_VECT sx127x::packetRssi(uint8_t pkt_snr_raw) {
int pkt_rssi = (int)readRegister(REG_PKT_RSSI_VALUE_7X) - RSSI_OFFSET;
int pkt_snr = ((int8_t)pkt_snr_raw)*0.25;
if (_frequency < 820E6) pkt_rssi -= 7;
if (pkt_snr < 0) {
pkt_rssi += pkt_snr;
} else {
// Slope correction is (16/15)*pkt_rssi,
// this estimation looses one floating point
// operation, and should be precise enough.
pkt_rssi = (int)(1.066 * pkt_rssi);
}
return pkt_rssi;
}
int ISR_VECT sx127x::packetRssi() {
int pkt_rssi = (int)readRegister(REG_PKT_RSSI_VALUE_7X) - RSSI_OFFSET;
int pkt_snr = packetSnr();

1
sx127x.h
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@ -33,6 +33,7 @@ public:
int parsePacket(int size = 0);
int packetRssi();
int packetRssi(uint8_t pkt_snr_raw);
int currentRssi();
uint8_t packetRssiRaw();
uint8_t currentRssiRaw();

8
sx128x.cpp
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@ -523,6 +523,14 @@ int ISR_VECT sx128x::packetRssi() {
return pkt_rssi;
}
int ISR_VECT sx128x::packetRssi(uint8_t pkt_snr_raw) {
// may need more calculations here
uint8_t buf[5] = {0};
executeOpcodeRead(OP_PACKET_STATUS_8X, buf, 5);
int pkt_rssi = -buf[0] / 2;
return pkt_rssi;
}
uint8_t ISR_VECT sx128x::packetSnrRaw() {
uint8_t buf[5] = {0};
executeOpcodeRead(OP_PACKET_STATUS_8X, buf, 5);

1
sx128x.h
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@ -35,6 +35,7 @@ public:
int parsePacket(int size = 0);
int packetRssi();
int packetRssi(uint8_t pkt_snr_raw);
int currentRssi();
uint8_t packetRssiRaw();
uint8_t currentRssiRaw();