Improved ESP32 compatibility

Config.h

@@ -83,7 +83,7 @@
 
 		#define BOARD_MODEL BOARD_TBEAM
 
-		#define CONFIG_UART_BUFFER_SIZE 64
+		#define CONFIG_UART_BUFFER_SIZE 6144
 		#define CONFIG_QUEUE_SIZE 6144
 		#define CONFIG_QUEUE_MAX_LENGTH 250
 

RNode_Firmware.ino

@@ -22,18 +22,13 @@ volatile bool serial_buffering = false;
 char sbuf[128];
 
 #if MCU_VARIANT == MCU_ESP32
-  #include "soc/rtc_wdt.h"
-  #define ISR_VECT IRAM_ATTR
   bool packet_ready = false;
-#else
-  #define ISR_VECT
 #endif
 
 void setup() {
   #if MCU_VARIANT == MCU_ESP32
     delay(500);
     EEPROM.begin(EEPROM_SIZE);
-    // TODO: Check this
     Serial.setRxBufferSize(CONFIG_UART_BUFFER_SIZE);
   #endif
 
@@ -70,15 +65,8 @@ void setup() {
   LoRa.setPins(pin_cs, pin_reset, pin_dio);
 
   #if MCU_VARIANT == MCU_ESP32    
-    // ESP32-specific initialisation
-    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();
-
+    Wire.begin(I2C_SDA, I2C_SCL);
+    initPMU();
     kiss_indicate_reset();
   #endif
 
@@ -97,7 +85,7 @@ void lora_receive() {
 inline void kiss_write_packet() {
   Serial.write(FEND);
   Serial.write(CMD_DATA);
-  for (int i = 0; i < read_len; i++) {
+  for (uint16_t i = 0; i < read_len; i++) {
     uint8_t byte = pbuf[i];
     if (byte == FEND) { Serial.write(FESC); byte = TFEND; }
     if (byte == FESC) { Serial.write(FESC); byte = TFESC; }
@@ -110,27 +98,13 @@ inline void kiss_write_packet() {
   #endif
 }
 
-inline void getPacketData(int len) {
+inline void getPacketData(uint16_t 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 MCU_VARIANT == MCU_ESP32
-    portENTER_CRITICAL_ISR(&isr_lock);
-  #endif
-
-  #if MCU_VARIANT == MCU_ESP32
-  if (!handling_packet) {
-    handling_packet = true;
-    #endif
-
   if (!promisc) {
     // The standard operating mode allows large
     // packets with a payload up to 500 bytes,
@@ -240,15 +214,7 @@ void ISR_VECT receive_callback(int packet_size) {
       getPacketData(packet_size);
       packet_ready = true;
     #endif
-    #if MCU_VARIANT == MCU_ESP32
-    }
-    handling_packet = false;
-    #endif
   }
-
-  #if MCU_VARIANT == MCU_ESP32
-    portEXIT_CRITICAL_ISR(&isr_lock);
-  #endif
 }
 
 
@@ -628,9 +594,22 @@ 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);
+  #endif
+
   uint8_t status = LoRa.modemStatus();
   last_status_update = millis();
+
+  #if MCU_VARIANT == MCU_ESP32
+    portEXIT_CRITICAL(&update_lock);
+  #endif
+
   if (status & SIG_DETECT == SIG_DETECT) { stat_signal_detected = true; } else { stat_signal_detected = false; }
   if (status & SIG_SYNCED == SIG_SYNCED) { stat_signal_synced = true; } else { stat_signal_synced = false; }
   if (status & RX_ONGOING == RX_ONGOING) { stat_rx_ongoing = true; } else { stat_rx_ongoing = false; }
@@ -801,14 +780,6 @@ void buffer_serial() {
       #endif
     }
 
-    #if MCU_VARIANT == MCU_ESP32
-      // Discard GPS data for now
-      c = 0;
-      while (c < MAX_CYCLES && Serial1.available()) {
-        Serial1.read();
-      }
-    #endif
-
     serial_buffering = false;
   }
 }