Swordfish

I'm not manually resetting, I'm using the DTR via a capacitor, so should be quite a short period between the application sending the reset and being able to write to the comport.


Rich

Is there a way to start-up the main code a little quicker? the bootloader seems to wait about 5 seconds before starting and I have this on a device which has an LCD and it displays garbage for for 5 seconds before clearing which just looks a bit nasty.


thanks in advance



Richard

Thanks even with your "DS40002147H" datasheet reference I tried to search for it on microchip website but it come back as no document!


but I did eventually find the document.


Thanks again much appreciated.


Richard

Does anyone know how many write cycles can be made to the eeprom? I have tried to look it up without much success i seen to come up with a number from 1000 which is low for my application to 10000 to 100000 writes . I have a design which is finished and locked down so I can't add new hardware, I nee...

Thanks Jerry,

I think I have gotten around it, by reading the eeprom, testing for a known number"314159" and if it's not as expected then I store the known number and other defaults then re-load the defaults.


This seems to work.



Rich

Just so we are on the same page, should this work ? EEPROM = (%00000000 As Byte,10000000 As LongWord,1 As LongWord,1 As LongWord ,1000 As LongWord,100 As LongWord,0 As LongWord,0 As Byte ,2100 As Word ,500 As Word ,40 As Byte) ...... EE.Read(0,globals(kgTriggerMode).value.byte0, globals(kgPeriod).va...

Hi Jerry, a quick question i have been using this bootloader for a while and all is good and some time ago i though i'd try it on a pic18f47q43 which had a serial port on the correct pins, and all seemed fine, but I have recently tried it on a new product that i thought we may want to change the fir...

oops that was a copy and paste error i was just showing the interval. the flowcounts variable was being sent in the main code loop. Device = 18F47Q43 Clock = 64 Config FEXTOSC = OFF, // Oscillator not enabled RSTOSC = HFINTOSC_64MHZ,// HFINTOSC with HFFRQ = 64 MHz and CDIV = 1:1 CLKOUTEN = OFF // CL...

Sorry to ask again but i seem to be having an issue with the "ISRTimer.bas" module this is clearly my lack of understanding but i hardly ever use timers. Event OnTimer() TP1 = 1 If Mscounter >= 1000 Then Mscounter=0 TimePassedInMS=TimePassedInMS+1 flowcounts = counter counter=0 Else Mscounter=Mscoun...

Ok so an update. After putting my debug kit back on the microcontroller i was getting a warning about buffer overrun when the problem was occuring. Sub CheckForNewData() Dim inbyte As Byte If ISRRX.BufferOverrun Or ISRRX.Overrun Then MyDebug("{OverRun}"+CrLf) ISRRX.Reset EndIf While ISRRX.DataAvaila...

I was hoping I'd overlooked something, I'll try checking the registers you suggested. I'm used to noise, I make Pulsed laser power supplies, the problem is that i have made a new PCB and one of the changes was using the intosc on this chip as i was low on pins and I haven't used it much before. So I...

Hi on a similar theme to the device config issue. I have been having an issue with noise on a board that has a a pic18f47q43 in a socket its running with internal oscilator at 64MHz, i originally had the config as below. Config FEXTOSC = OFF, // Oscillator not enabled RSTOSC = HFINTOSC_64MHZ,// HFIN...

Thanks Jerry, I am trying to decode this in the windows application as this is for diagnostics/debug so I wanted to minimize the amount of time the pic spends sending data. I have now found an application note from microchip but I am getting incorrect values in windows so I must have messed up my bi...

hi, I'm trying to send a float to a pc using the following Public Sub WriteFloat(pValue As Float) WriteByte(pValue.Bytes(0)) WriteByte(pValue.Bytes(1)) WriteByte(pValue.Bytes(2)) WriteByte(pValue.Bytes(3)) End Sub End Sub the data i get back on the pc doesn't seem in a standard Microsoft format but ...

Sorry for the slow reply, Ok, this is a bit embarrassing. In my defence this was an old board design where I have just changed to a new processor, and a new fault had been introduced. I had 1k series resistors inline with the fpga as level shifters as the fpga has clamp diodes. but this value is rea...