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Paulvk
Joined: 28 Jul 2006
Posts: 1257
Location: SYDNEY
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 Posted: Fri Jan 22, 2016 5:48 am Post subject: Interface between MPP solar products & PC |
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This code makes an interface between MPP solar products and a terminal running on a PC
You type the command in the terminal then press enter
The AVR calculates the CRC and adds it to the command then sends it to the MPP solar inverter
The MPP solar inverter responds with some data which is then sent to the terminal on the PC
This is just the first step more to come!
Regards Paul
| Code: |
'Interface between MPP solar products and PC terminal
$regfile = "m2560def.dat" ' specify the used micro
$crystal = 16000000 ' used crystal frequency
$baud = 57600 ' use baud rate
$hwstack = 50
$swstack = 50
$framesize = 50
Dim Alen As Byte
Dim Onlongs(17) As Long 'numbers to sort Long, Word, Byte as needed
'Dim X As Byte
Dim Thecrc As Word
Dim Rs232 As Byte
Dim Uart_command_in As String * 50
Dim Uart_command As String * 254
Dim Send_command As String * 50
Dim Send_bytes(49) As Byte At Send_command Overlay
Dim Crcstr As String * 2
Dim Crcwrd As Word At Crcstr Overlay
Dim Z As Byte
Config Com2 = 2400 , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0
Open "com2:" For Binary As #1
Do
Do
If Ischarwaiting() = 1 Then
Rs232 = Inkey() 'get a character from the buffer
If Rs232 = 13 Or Len(uart_command_in) > 49 Then 'uart_command full or enter key sent
Print
Exit Do
Else
Uart_command_in = Uart_command_in + Chr(rs232) 'add the character to the uart_command buffer
Print Chr(rs232) ;
End If
End If
Loop
Send_command = Uart_command_in
Uart_command_in = ""
Send_command = Ucase(send_command)
Z = Len(send_command)
Thecrc = Crc16(send_bytes() , Z) 'workout the CRC
Swap Thecrc
'Print Hex(thecrc)
Crcwrd = Thecrc
Print #1 , Send_command ; Crcstr ; Chr(13) ;
Do
If Ischarwaiting(#1) = 1 Then
Rs232 = Inkey(#1) 'get a character from the buffer
If Rs232 = 13 Or Len(uart_command) > 253 Then 'uart_command full or enter key sent
Print Uart_command
Uart_command = ""
Exit Do
Else
Uart_command = Uart_command + Chr(rs232) 'add the character to the uart_command buffer
End If
End If
Loop
Loop
End 'end program
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bzijlstra
Joined: 30 Dec 2004
Posts: 1179
Location: Tilburg - Netherlands
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| Posted: Fri Jan 22, 2016 7:59 am Post subject: Terminal program |
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Nice terminal program with extras.
Have fun
Ben Zijlstra |
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Paulvk
Joined: 28 Jul 2006
Posts: 1257
Location: SYDNEY
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| Posted: Sun Jan 24, 2016 11:43 am Post subject: |
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Now the CRC16 is calculated both ways send and receive
So if you hook two AVRs together via rs232 you can check the data is valid
Regards Paul
| Code: |
'Interface between MPP solar products and PC terminal
$regfile = "m2560def.dat" ' specify the used micro
$crystal = 16000000 ' used crystal frequency
'$baud = 57600 ' use baud rate
$hwstack = 50
$swstack = 50
$framesize = 50
Dim Alen As Byte
Dim Onlongs(17) As Long 'numbers to sort Long, Word, Byte as needed
'Dim X As Byte
Dim Crc_16 As String * 2
Dim Work2 As Word At Crc_16 Overlay
Dim Work(35) As String * 40
Dim Thecrc As Word
Dim Rs232 As Byte
Dim Uart_command_in As String * 50
Dim Uart_command As String * 254
Dim Aruart_command(253) As Byte At Uart_command Overlay
Dim Send_command As String * 50
Dim Send_bytes(49) As Byte At Send_command Overlay
Dim Crcstr As String * 2
Dim Crcwrd As Word At Crcstr Overlay
Dim Z As Byte
Dim Task As Byte
Declare Sub Chopup
Declare Sub Find_command
Declare Sub Cal_crc16
Config Com1 = 57600 , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0
Config Com2 = 2400 , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0
Open "com2:" For Binary As #1
Do
Task = 0
Do
If Ischarwaiting() = 1 Then
Rs232 = Inkey() 'get a character from the buffer
If Rs232 = 13 Or Len(uart_command_in) > 49 Then 'uart_command full or enter key sent
Print
Uart_command_in = Ucase(uart_command_in) 'make uper case
Exit Do
Else
Uart_command_in = Uart_command_in + Chr(rs232) 'add the character to the uart_command buffer
Print Chr(rs232) ;
End If
End If
Loop
Select Case Uart_command_in
Case "INFO" 'get the state of inverter
Uart_command_in = "QPIGS"
Task = 1
End Select
Send_command = Uart_command_in
Uart_command_in = ""
Z = Len(send_command)
Thecrc = Crc16(send_bytes() , Z) 'workout the CRC
Swap Thecrc
'Print Hex(thecrc)
Crcwrd = Thecrc
Print #1 , Send_command ; Crcstr ; Chr(13) ;
Do
If Ischarwaiting(#1) = 1 Then
Rs232 = Inkey(#1) 'get a character from the buffer
If Rs232 = 13 Or Len(uart_command) > 253 Then 'uart_command full or enter key sent
Delchars Uart_command ,(13)
Call Find_command
Print "RETURNED DATA>" ; Uart_command
Uart_command = ""
Exit Do
Else
Uart_command = Uart_command + Chr(rs232) 'add the character to the uart_command buffer
End If
End If
Loop
Loop
End 'end program
Sub Find_command
Local A As String * 3
Local B As Byte
Local C As Byte
Local D As Byte
Local E As Long
C = &B00000111
Call Chopup
Select Case Task
Print "Status bits>" ; Work(17)
Case 1 'get the state of inverter
Delchar Work(1) , 1 'remove the (
'work(17) staus bits
Print ">>Inverter Stats<<"
Print "Grid Volts=" ; Work(1)
Print "Grid Frequency=" ; Work(2)
Print "AC Output Volts=" ; Work(3)
Print "AC Output Frequency" ; Work(4)
Print "Apparent Power=" ; Work(5)
Print "Active Power=" ; Work(6)
Print "Load=" ; Work(7) ; "%"
Print "Buss Volts=" ; Work(8)
Print "Battery Volts=" ; Work(9)
Print "Battery Current=" ; Work(10) ; "Amps"
Print "Battery Capacity=" ; Work(11) ; "%"
Print "Inverter Heat Sink Temp=" ; Work(12) ; "C"
Print "PV Current into Battery=" ; Work(13) ; "Amps"
Print "PV Voltage=" ; Work(14) ; "Volts"
Print "Solar Charger Battery Voltage=" ; Work(15) ; "Volts"
Print "Battery Discharge Current=" ; Work(16) ; "Amps"
A = Mid(work(17) , 1)
If A = "1" Then
Print "SBU Priority=Yes"
Else
Print "SBU Priority=No"
End If
A = Mid(work(17) , 2)
If A = "1" Then
Print "Configuration Change"
Else
Print "Configuration No Change"
End If
A = Mid(work(17) , 3)
If A = "1" Then
Print "Solar Charger Firmware Updated"
Else
Print "Solar Charger Firmware Not Updated"
End If
A = Mid(work(17) , 4)
If A = "1" Then
Print "Load is On"
Else
Print "Load is Off"
End If
A = Mid(work(17) , 6 , 3)
D = Binval(a)
Select Case D
Case 0
Print "No charging On"
Case 6
Print "Solar charging On"
Case 5
Print "AC charging On"
Case 7
Print "Solar & AC Charging On"
End Select
End Select
Call Cal_crc16
End Sub
'get the individual parameters returned
Sub Chopup
Local Lx As Byte
Lx = Split(uart_command , Work(1) , " ")
'Print "we had " ; Lx ; " lots of data returned"
End Sub
Sub Cal_crc16
Local Z As Word
Local Rcrc As Word
Z = Len(uart_command)
Z = Z - 2 'last two bytes are crc
'Print "Z is>" ; Z
Rcrc = Crc16(aruart_command() , Z) 'calculate the CRC
Swap Rcrc 'bytes are in reverse order to what is sent to us
Print "Cal CRC is>" ; Hex(rcrc)
Crc_16 = Right(uart_command , 2) 'get the last two bytes the crc
Rcrc = Work2 'this is a word variable overlayed on Crc_16
Print "The sent crc>" ; Hex(rcrc)
End Sub
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albertsm
Joined: 09 Apr 2004
Posts: 5922
Location: Holland
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| Posted: Mon Jan 25, 2016 10:26 am Post subject: |
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thanks for sharing Paul. I do not know this MPP solar product but i am interested in solar products. A lot of panels, a windmill and a tesla battery for backup would be great 
_________________
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Paulvk
Joined: 28 Jul 2006
Posts: 1257
Location: SYDNEY
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| Posted: Wed May 25, 2016 10:36 am Post subject: |
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Hello Northland
Welcome to the Bascom forum
You need to have the RS232 to TTL buffers to plug the Arduino into the PIP inverter as it is +-15volt
and the Arduino can only take 5volts
Have you got them yet?
Now with the mega2560 you need to load the Arduino driver for it so that
in device manager you can see it as a com port
once you have that you go to options > programmer and select ARDUINO STK500V2
Set the com port to that of the mega2560 and BAUD 115200
click on OK
Now bascom can talk to the arduino
You can test this by pressing F4 on your keyboard
You will now have the programming console up
Move mouse up to chip then identify
Bascom will now interrogate the arduino it should then display the ATMega2560 in the top left
This will have confirmed that bascom is talking to the arduino
Next post step two |
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Paulvk
Joined: 28 Jul 2006
Posts: 1257
Location: SYDNEY
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| Posted: Wed May 25, 2016 11:05 am Post subject: |
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Now that you have pasted the code into bascom you need to save it to a file
So file save as (just as usual with windows)
Next you will press F7 this will compile the program into a binary file for the arduino to use
Next press F4 up comes the programming interface
Just above the word flash is a dark green icon when you move the mouse over it it will say Erase and Program Chip
by clicking on it bascom will put the program into the arduino
You now have the arduino working out the CRC for the PIP
COM port 2 on the arduino goes to the PIP using the RS232 buffer and TX RX cross over cable
COM port 1 is the USB cable to the arduino at 57600 BAUD
Now with a terminal program (I like realterm http://realterm.sourceforge.net/)
You can type QPIGS into the terminal press enter
The arduino works out the CRC then sends it to the PIP inverter
The PIP sends back the reply
The arduino receives this and works out what it is
It then prints all the data below to the terminal screen filling in the values (work() )
Thus the Arduino communicates with the inverter and translates the received data into meaningful values
Thus a program on a PC that sends QPIGS via the arduino COM port will get the data returned and decoded
I hope I have explained it clearly enough
When I make the server binary file you will be able to use bascom to load it into the arduino
even though it can not be compiled on the free version which has a limit of 4K
Regards Paul
| Code: |
Print ">>Inverter Stats<<"
Print "Grid Volts=" ; Work(1)
Print "Grid Frequency=" ; Work(2)
Print "AC Output Volts=" ; Work(3)
Print "AC Output Frequency" ; Work(4)
Print "Apparent Power=" ; Work(5)
Print "Active Power=" ; Work(6)
Print "Load=" ; Work(7) ; "%"
Print "Buss Volts=" ; Work(8)
Print "Battery Volts=" ; Work(9)
Print "Battery Current=" ; Work(10) ; "Amps"
Print "Battery Capacity=" ; Work(11) ; "%"
Print "Inverter Heat Sink Temp=" ; Work(12) ; "C"
Print "PV Current into Battery=" ; Work(13) ; "Amps"
Print "PV Voltage=" ; Work(14) ; "Volts"
Print "Solar Charger Battery Voltage=" ; Work(15) ; "Volts"
Print "Battery Discharge Current=" ; Work(16) ; "Amps"
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Paulvk
Joined: 28 Jul 2006
Posts: 1257
Location: SYDNEY
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| Posted: Sat May 28, 2016 9:13 am Post subject: |
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Try setting the programmer to ARDUINO instead of ARDUINO STK500V2 as your board uses a different usb to serial chip
I have the mega2560 boards so I can not test with mega1280
As you have a different chip on your board the regfile needs to be changed
I have some NANO boards on the way I will be looking at making them slaves off the main
board communicating back to to it.
Change
| Code: |
$regfile = "m2560def.dat" this needs to be changed
$regfile = "m1280def.dat" to this
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Northland
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| Posted: Sat May 28, 2016 9:34 am Post subject: |
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| Yes I had 1280 there always. I tried every programmer in the list. Could it be the 2 files it says are missing? I googled both but nothing came up |
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Paulvk
Joined: 28 Jul 2006
Posts: 1257
Location: SYDNEY
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| Posted: Sat May 28, 2016 9:53 am Post subject: |
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No the two missing files are the program for the Arduino
The BIN file is what gets loaded into the flash
The EEP file is what gets loaded into the the eeprom
So you have tried the different options but should only need the Arduino setting
sometimes I find you have to save the setting then close bascom
then re start bascom
Regards Paul |
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Duval JP
Joined: 22 Jun 2004
Posts: 1161
Location: France
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| Posted: Sat May 28, 2016 5:59 pm Post subject: |
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hi Northland,
did you work with an Arduino 2560 yes or not, you work with an AVR M1280 Yes ?
what kind of arduino module did you use ?
I use M2560 or Chinese compatible, but for the Chinese compatible I try to use with IDE Arduino first to be sure it was recognised then I look for the serial port of the module.
maybe you can use a baud rate of 57KB ?
let us know, please.
If you try to program a M1280 alone you need a programmer as USB-ISP or others...look at the list and the help file in the help.
JP
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Duval JP
Joined: 22 Jun 2004
Posts: 1161
Location: France
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| Posted: Sun May 29, 2016 9:42 am Post subject: |
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look at here first :
http://www.mcselec.com/index2.php?option=com_forum&Itemid=59&page=viewtopic&t=12472
try the "blink" with IDE arduino
change the program al little bit and try it again.
check the baud rate and the port
if it is ok
look at if the test-led is really on the pin B.7 (pin13 arduino)
start bascom
modify the $regfile in the program below and adjust the baud rate of the programmer following the baud rate of IDE arduino
'-------------------------------------------------------------------------------
' ARDUINO-M2560 V3.BAS
'
' (c) 1995-2014, MCS Electronics
' This is a sample file for the Mega2560 based ARDUINO board
' Select Programmer 'ARDUINO stk500V2' , 115200 baud and the proper COM port timeout 200
'-------------------------------------------------------------------------------
$regfile = "m2560def.dat"
$crystal = 16000000
'Config Clockdiv = 1 ' either use this or change the divider fuse byte
Config Portb.7 = Output 'pin 13 arduino
Do
Wait 2
Toggle Portb.7
Loop
compile, choice the good programmer autosave , without autoverfy
save and exit from bascom
reload bascom
press F4 when the program is loaded and compiled (F7) and wait without any action
If you have pb again use DUDE
http://wiki.mcselec.com/Getting_started_with_Arduino_UNO take care it is .hex file not .bin one
JP |
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EDC
Joined: 26 Mar 2014
Posts: 971
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| Posted: Sun May 29, 2016 9:49 am Post subject: |
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I also have Arduino IDE installed so I look inside bootloaders section.
In bootloaders for Atmega you can find bootloader for 1280 and some usefull informations |
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EDC
Joined: 26 Mar 2014
Posts: 971
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| Posted: Sun May 29, 2016 9:54 am Post subject: |
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So I think you should try like that. But after set this parameters restart Bascom.
I dont know why but sometimes when I switch from one programmer to another (MKII for Xmagas and switch to Arduino for example) then without restart programmer fail. But after restart everything goes OK so I restart bascom "to be sure"
You can also visit http://wiki.mcselec.com/bavr/ARDUINO |
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albertsm
Joined: 09 Apr 2004
Posts: 5922
Location: Holland
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| Posted: Sun May 29, 2016 10:25 am Post subject: |
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| Northland wrote: | | Yes I had 1280 there always. I tried every programmer in the list. Could it be the 2 files it says are missing? I googled both but nothing came up |
sure, you first should check why these files are mssing.
at least the BIN file should exist. without the binary to program, no programming is possible.
and you should also let us know which bascom version you use.
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Paulvk
Joined: 28 Jul 2006
Posts: 1257
Location: SYDNEY
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| Posted: Mon May 30, 2016 11:06 am Post subject: |
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Ok my nano boards arrived today and with ARDUINO set as programmer and BAUD 57600
it is working with bascom chip identify
Now to see if I can get the program working
using bascom's software UART to create the second serial port
Regards Paul |
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