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Work on ESP32 compatibility

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This commit is contained in:
Mark Qvist 2022-01-11 02:54:32 +01:00
parent 2e8525c601
commit a0af475c31
3 changed files with 145 additions and 99 deletions
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4
Config.h
View File

@ -79,6 +79,10 @@
#define EEPROM_SIZE 1024
#define EEPROM_OFFSET EEPROM_SIZE-EEPROM_RESERVED
#define GPS_BAUD_RATE 9600
#define PIN_GPS_TX 12
#define PIN_GPS_RX 34
#endif
#define eeprom_addr(a) (a+EEPROM_OFFSET)

221
RNode_Firmware.ino
View File

@ -34,7 +34,7 @@ void setup() {
delay(500);
EEPROM.begin(EEPROM_SIZE);
// TODO: Check this
//Serial.setRxBufferSize(CONFIG_UART_BUFFER_SIZE);
Serial.setRxBufferSize(CONFIG_UART_BUFFER_SIZE);
#endif
// Seed the PRNG
@ -71,13 +71,15 @@ void setup() {
#if MCU_VARIANT == MCU_ESP32
// ESP32-specific initialisation
// The WDT is disabled for now. This
// should be re-enabled as soon as any
// Core0-related features are used
rtc_wdt_protect_off();
rtc_wdt_disable();
Serial1.begin(GPS_BAUD_RATE, SERIAL_8N1, PIN_GPS_RX, PIN_GPS_TX);
// rtc_wdt_protect_off();
// rtc_wdt_set_stage(RTC_WDT_STAGE0, RTC_WDT_STAGE_ACTION_RESET_SYSTEM);
// rtc_wdt_set_time(RTC_WDT_STAGE0, 25);
// rtc_wdt_protect_on();
// rtc_wdt_enable();
kiss_indicate_reset();
#endif
// Validate board health, EEPROM and config
@ -108,80 +110,123 @@ inline void kiss_write_packet() {
#endif
}
inline void getPacketData(int len) {
while (len-- && read_len < MTU) {
pbuf[read_len++] = LoRa.read();
}
}
#if MCU_VARIANT == MCU_ESP32
portMUX_TYPE isr_lock = portMUX_INITIALIZER_UNLOCKED;
#endif
bool handling_packet = false;
void ISR_VECT receive_callback(int packet_size) {
if (!promisc) {
// The standard operating mode allows large
// packets with a payload up to 500 bytes,
// by combining two raw LoRa packets.
// We read the 1-byte header and extract
// packet sequence number and split flags
uint8_t header = LoRa.read(); packet_size--;
uint8_t sequence = packetSequence(header);
bool ready = false;
#if MCU_VARIANT == MCU_ESP32
portENTER_CRITICAL_ISR(&isr_lock);
#endif
if (isSplitPacket(header) && seq == SEQ_UNSET) {
// This is the first part of a split
// packet, so we set the seq variable
// and add the data to the buffer
read_len = 0;
seq = sequence;
#if MCU_VARIANT == MCU_ESP32
if (!handling_packet) {
handling_packet = true;
#endif
#if MCU_VARIANT != MCU_ESP32
last_rssi = LoRa.packetRssi();
last_snr_raw = LoRa.packetSnrRaw();
#endif
if (!promisc) {
// The standard operating mode allows large
// packets with a payload up to 500 bytes,
// by combining two raw LoRa packets.
// We read the 1-byte header and extract
// packet sequence number and split flags
uint8_t header = LoRa.read(); packet_size--;
uint8_t sequence = packetSequence(header);
bool ready = false;
getPacketData(packet_size);
} else if (isSplitPacket(header) && seq == sequence) {
// 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
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;
} else if (isSplitPacket(header) && seq != sequence) {
// This split packet does not carry the
// same sequence id, so we must assume
// that we are seeing the first part of
// a new split packet.
read_len = 0;
seq = sequence;
#if MCU_VARIANT != MCU_ESP32
last_rssi = LoRa.packetRssi();
last_snr_raw = LoRa.packetSnrRaw();
#endif
getPacketData(packet_size);
} else if (!isSplitPacket(header)) {
// This is not a split packet, so we
// just read it and set the ready
// flag to true.
if (seq != SEQ_UNSET) {
// If we already had part of a split
// packet in the buffer, we clear it.
if (isSplitPacket(header) && seq == SEQ_UNSET) {
// This is the first part of a split
// packet, so we set the seq variable
// and add the data to the buffer
read_len = 0;
seq = sequence;
#if MCU_VARIANT != MCU_ESP32
last_rssi = LoRa.packetRssi();
last_snr_raw = LoRa.packetSnrRaw();
#endif
getPacketData(packet_size);
} else if (isSplitPacket(header) && seq == sequence) {
// 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
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;
} else if (isSplitPacket(header) && seq != sequence) {
// This split packet does not carry the
// same sequence id, so we must assume
// that we are seeing the first part of
// a new split packet.
read_len = 0;
seq = sequence;
#if MCU_VARIANT != MCU_ESP32
last_rssi = LoRa.packetRssi();
last_snr_raw = LoRa.packetSnrRaw();
#endif
getPacketData(packet_size);
} else if (!isSplitPacket(header)) {
// This is not a split packet, so we
// just read it and set the ready
// flag to true.
if (seq != SEQ_UNSET) {
// If we already had part of a split
// packet in the buffer, we clear it.
read_len = 0;
seq = SEQ_UNSET;
}
#if MCU_VARIANT != MCU_ESP32
last_rssi = LoRa.packetRssi();
last_snr_raw = LoRa.packetSnrRaw();
#endif
getPacketData(packet_size);
ready = true;
}
if (ready) {
#if MCU_VARIANT != MCU_ESP32
// We first signal the RSSI of the
// recieved packet to the host.
kiss_indicate_stat_rssi();
kiss_indicate_stat_snr();
// And then write the entire packet
kiss_write_packet();
#else
packet_ready = true;
#endif
}
} else {
#if MCU_VARIANT != MCU_ESP32
// In promiscuous mode, raw packets are
// output directly to the host
read_len = 0;
last_rssi = LoRa.packetRssi();
last_snr_raw = LoRa.packetSnrRaw();
#endif
getPacketData(packet_size);
getPacketData(packet_size);
ready = true;
}
if (ready) {
#if MCU_VARIANT != MCU_ESP32
// We first signal the RSSI of the
// recieved packet to the host.
kiss_indicate_stat_rssi();
@ -189,33 +234,21 @@ void ISR_VECT receive_callback(int packet_size) {
// And then write the entire packet
kiss_write_packet();
#else
read_len = 0;
getPacketData(packet_size);
packet_ready = true;
#endif
#if MCU_VARIANT == MCU_ESP32
}
} else {
#if MCU_VARIANT != MCU_ESP32
// In promiscuous mode, raw packets are
// output directly to the host
read_len = 0;
last_rssi = LoRa.packetRssi();
last_snr_raw = LoRa.packetSnrRaw();
getPacketData(packet_size);
// We first signal the RSSI of the
// recieved packet to the host.
kiss_indicate_stat_rssi();
kiss_indicate_stat_snr();
// And then write the entire packet
kiss_write_packet();
#else
// Promiscous mode is not supported on ESP32 for now
getPacketData(packet_size);
read_len = 0;
handling_packet = false;
#endif
}
#if MCU_VARIANT == MCU_ESP32
portEXIT_CRITICAL_ISR(&isr_lock);
#endif
}
@ -747,7 +780,7 @@ void serial_poll() {
#if MCU_VARIANT != MCU_ESP32
#define MAX_CYCLES 20
#else
#define MAX_CYCLES 1
#define MAX_CYCLES 10
#endif
void buffer_serial() {
if (!serial_buffering) {
@ -768,6 +801,14 @@ void buffer_serial() {
#endif
}
#if MCU_VARIANT == MCU_ESP32
// Discard GPS data for now
c = 0;
while (c < MAX_CYCLES && Serial1.available()) {
uint8_t void_c = Serial1.read();
}
#endif
serial_buffering = false;
}
}

17
Utilities.h
View File

@ -31,8 +31,8 @@ uint8_t boot_vector = 0x00;
void led_tx_on() { digitalWrite(pin_led_tx, HIGH); }
void led_tx_off() { digitalWrite(pin_led_tx, LOW); }
#elif MCU_VARIANT == MCU_ESP32
void led_rx_on() { digitalWrite(pin_led_rx, LOW); }
void led_rx_off() { digitalWrite(pin_led_rx, HIGH); }
void led_rx_on() { digitalWrite(pin_led_rx, HIGH); }
void led_rx_off() { digitalWrite(pin_led_rx, LOW); }
void led_tx_on() { digitalWrite(pin_led_tx, LOW); }
void led_tx_off() { digitalWrite(pin_led_tx, HIGH); }
#endif
@ -216,6 +216,13 @@ void escapedSerialWrite(uint8_t byte) {
Serial.write(byte);
}
void kiss_indicate_reset() {
Serial.write(FEND);
Serial.write(CMD_RESET);
Serial.write(CMD_RESET_BYTE);
Serial.write(FEND);
}
void kiss_indicate_error(uint8_t error_code) {
Serial.write(FEND);
Serial.write(CMD_ERROR);
@ -389,12 +396,6 @@ inline uint8_t packetSequence(uint8_t header) {
return header >> 4;
}
inline void getPacketData(int len) {
while (len--) {
pbuf[read_len++] = LoRa.read();
}
}
void setSpreadingFactor() {
if (radio_online) LoRa.setSpreadingFactor(lora_sf);
}