I am using same hardware and notice several small issues with Intellisense.

I also have trouble getting debugger to work. I can compile and upload code to the Dash device ok but cannot debug. I have purchased the debugger option with Visual Micro.

This page describes the serial ports https://hologram.io/docs/reference/dash/api/

This page shows initial installation using Arduino
https://hologram.io/docs/guide/dash/programming-and-firmware/

I am using SerialUSB (enumerated as COM24) for main port. I have SD card on Serial2 but Serial0 is available if we cannot use SerialUSB for some reason.

When I type Serial0 and press F12, I get taken to WVariant.h (contents below). The port I upload on is SerialUSB. Serial1 is reserved for Cloud write. I have addaed the contents of uart.h at bottom of this post.

#include "Arduino.h"

#define DASH_LED        (25)
#define DASH_WAKE       (7)
#define LED_BUILTIN     DASH_LED

#define SPI_INSTANCE    SPI0
#define SPI_GATE        kSimClockGateSpi0
#define SPI_CLOCK_SRC   DEFAULT_BUS_CLOCK
#define Serial          SerialUSB

#define USB_STR_SERIAL_NUMBER_SIZE  (64)

#ifdef __cplusplus
#include "Uart.h"
#include "Dash.h"
#include "Max1704x.h"
#include "Charger.h"
#include "Wire.h"
#include "Clock.h"
#include "Hologram.h"
#include "SerialCloud.h"

extern Uart Serial0;
extern Uart SerialSystem;
extern Uart Serial2;
extern DashClass Dash;
extern TwoWire Wire;
extern ClockClass Clock;
extern Max1704x FuelGauge;
extern DashCharger Charger;
extern Hologram HologramCloud;
extern SerialCloudClass SerialCloud;

***************  UART.h ****************
#include "RingBuffer.h"
#include "HardwareSerial.h"
#include "hal/fsl_device_registers.h"

#include <cstddef>

class Uart : public HardwareSerial
{
public:
    Uart(UART_Type * instance, sim_clock_gate_name_t gate_name, uint32_t clock,
        IRQn_Type irqNumber, uint32_t rx, uint32_t tx);
    void begin(unsigned long baudRate); //(8N1 only) TODO add config params
    void begin(unsigned long baudrate, uint16_t config) {begin(baudrate);}
    void flush();
    void IrqHandler();
    size_t write(const uint8_t data);
    void end();
    int available();
    int peek();
    int read();
    operator bool() { return true; }
    using Print::write; // pull in write(str) and write(buf, size) from Print

    void waitToEmpty();

protected:
    RingBuffer rxBuffer;
    UART_Type * instance;
    sim_clock_gate_name_t gate_name;
    uint32_t clock;
    IRQn_Type irqNumber;
    uint32_t rx;
    uint32_t tx;
};

If you set the debug port to serial0 then you would need a serial/usb cable from pc to the pins of serial0.

Then in visual micro the local port would be set to the COM of the serial0 and not the serialusb

note: arduino boards that have usb on the micro-controller will usually boot into a different port for upload. That is handled by visual micro.

Yes will add support for the usb upload com port shortly.

Now that you have explained what you have it sounds like you just need to set the debugger local port to the COM that is Serial0. You can ignore my prev note about needing an extra cable.

Thanks.

The main serial port used for code update is SerialUSB. Being able to upload code and debug will be great. I look forward to the updated VM.

I installed the update ok, then reset debug settings (now no ports etc selected for debug) then when I compile debug version I get this error

Compiling debug version of 'SD_Logger' for 'Dash'
 
VM_DBG.cpp:33: In file included from
 
VM_DBG.h: 206:2: error: 'Serial_' does not name a type
   Serial_ *transport
 
VM_DBG.h: 207:13: error: 'Serial_' has not been declared
   void begin(Serial_ *theSerial)
 
VM_DBG.h: 208:13: error: 'Serial_' has not been declared
   void begin(Serial_ *theSerial, unsigned long baud)
VM_DBG.cpp: In member function void VisualMicroDebug:nBreakPointPrintBegin(uint8_t)
 
VM_DBG.cpp: 181:2: error: 'transport' was not declared in this scope
   transport->print("VMDPE_")
VM_DBG.cpp: In member function void VisualMicroDebug:nBreakPointPrintEnd()
 
VM_DBG.cpp: 194:2: error: 'transport' was not declared in this scope
   transport->println("_VMDPE")
VM_DBG.cpp: At global scope
 
VM_DBG.cpp: 643:30: error: variable or field 'begin' declared void
void VisualMicroDebug*: begin(Serial_ *theSerial)
 
VM_DBG.cpp: 643:30: error: 'Serial_' was not declared in this scope
 
VM_DBG.cpp: 643:39: error: 'theSerial' was not declared in this scope
void VisualMicroDebug*: begin(Serial_ *theSerial)
 
VM_DBG.cpp: 1859:27: error: expected declaration before end of line
   #pragma GCC diagnostic pop
Error compiling libraries
   error: This hardware might not support the default Serial debugger.
     Try switching the toolbar from 'Debug' to 'Release' and build again. 
           or switch off Automatic Debugging
           or configure the SoftwareSerial debugger option.
Debug build failed for project 'SD_Logger'

Sorry, there is an update here for the dash. I just tested the dashpro before. The serialn ports are also tested now

This is the next build.

https://1drv.ms/u/s!AsT00oFsGAmRkcdvRyZ4AtDKAeG_mQ

Yep, Microsoft have sure confused the installers between vs versions!

It's been uploaded to the gallery now which is available in the ide via tools>extensions and updates. That's where you can install for the current ide and be sure of what version you have installed.

The currently installed version shows on the "Installed" tab, available version on the "Online" or "Updates" tabs.

Here is the actual output when I attempt to run indebug mode:

Compiling debug version of 'SD_Logger' for 'Dash'

VM_DBG.cpp:33: In file included from

VM_DBG.h: 301:2: error: 'UARTClass' does not name a type
   UARTClass *transport

VM_DBG.h: 302:13: error: 'UARTClass' has not been declared
   void begin(UARTClass *theSerial, unsigned long baud)
VM_DBG.cpp: In member function void VisualMicroDebug::OnBreakPointPrintBegin(uint8_t)

VM_DBG.cpp: 181:2: error: 'transport' was not declared in this scope
   transport->print("VMDPE_")
VM_DBG.cpp: In member function void VisualMicroDebug::OnBreakPointPrintEnd()

VM_DBG.cpp: 194:2: error: 'transport' was not declared in this scope
   transport->println("_VMDPE")
VM_DBG.cpp: At global scope

VM_DBG.cpp: 818:30: error: variable or field 'begin' declared void
 void VisualMicroDebug*: begin(UARTClass *theSerial, unsigned long baud)

VM_DBG.cpp: 818:30: error: 'UARTClass' was not declared in this scope

VM_DBG.cpp: 818:41: error: 'theSerial' was not declared in this scope
 void VisualMicroDebug*: begin(UARTClass *theSerial, unsigned long baud)

VM_DBG.cpp: 818:52: error: expected primary-expression before 'unsigned
 void VisualMicroDebug*: begin(UARTClass *theSerial, unsigned long baud)
VM_DBG.cpp: In member function unsigned char VisualMicroDebug::read()

VM_DBG.cpp: 959:6: error: 'transport' was not declared in this scope
   b = transport->read()
VM_DBG.cpp: In member function unsigned char VisualMicroDebug::peek()

VM_DBG.cpp: 974:6: error: 'transport' was not declared in this scope
   b = transport->peek()
VM_DBG.cpp: In member function uint8_t VisualMicroDebug::available()

VM_DBG.cpp: 989:6: error: 'transport' was not declared in this scope
   b = transport->available()
VM_DBG.cpp: In member function void VisualMicroDebug::sendContinuedACK(uint8_t)

VM_DBG.cpp: 1202:2: error: 'transport' was not declared in this scope
   transport->print("VMDPC_")
VM_DBG.cpp: In member function void VisualMicroDebug::sendMessage(const char*)

VM_DBG.cpp: 1228:2: error: 'transport' was not declared in this scope
   transport->print(debugger_message)

VM_DBG.cpp: In function void no_lvalue_err()

VM_DBG.cpp: 1589:13: error: 'class VisualMicroDebug' has no member named 'transport

   Attempt to set a read-only variable or data type not supported\r\n")
Error compiling libraries
   error: This hardware might not support the default Serial debugger.
	Try switching the toolbar from 'Debug' to 'Release' and build again.
		or switch off Automatic Debugging
		or configure the SoftwareSerial debugger option.
Debug build failed for project 'SD_Logger'