Direct Port I/O in NewSoftSerial 9

Wow, looks impressive. Great work!

I would love support for the Mega, and RTS/CTS capability.

Hello Mikal,

I want to use the possibility of interrupt driven receives, but I can’t seem to figure out how to make that happen using your library. I would be greatful if you could send me an example of how to set up an interrupt on RX with use of your great library.

Thanks in advance,

Jake.

For a long time I used SoftwareSerial to communicate with my LCD, however sometimes it caused strange symbols to show up on the display (I guess due to incorrect timing). With your library these problems disappeared into thin air! Thanks again!

I am working on a project that could greatly benefit from Arduino Mega support. Thanks!

Hmmmm; just downloaded and tossed this into arduino/hardware/libraries; and on compile I got “NewSoftSerial.cpp:54: warning: only initialized variables can be placed into program memory area”

Just a heads up. Seems to be working fine, though I’ve not had a chance to really test it properly yet.

Support for inverted signals would really be great. I have some serial LCDs (bought to use with Basic Stamps) that I can’t use with the Arduino.

Thanks for your efforts!

Just like Derrick, I downloaded, installed on arduino 15. Tried to compile the NewSoftSerialTest. It says Error building library “NewSoftSerial”, below it says,’C:\Documents…\NewSoftSerialTest.hex’:no such file

What did i do wrong? Thanks.

Very nice progress. Thanks for your effort. Looking forward to using the new version, I was getting some checksum errors with TinyGPS in the past, perhaps the speedier NSS will alleviate some of that?

Flow control would be nice, as I’d like to use that ability on the FTDI VDrive2 for USB Datalogging.

Software inversion would also be nice, but I’ve had good success using a basic NPN transistor (ex. 2N3904) for signal inversion, so that might be lower on my list.

Thanks for your nice program. I use the NewSoftSerial9 to read 2 Uart. I use a Flag , so each time only 1 uart are checked. But since the 2 UART timing are close. So the success rate to read the data is not very high.(I think it is beacuse of enable 2 SoftSerail and even I don’t want to check theother UART, the library still do that for me).
Can I temporay turn off the Not Reading UART and Watch the Reading UART ?

Forget my previous post. I think it is my program’s bug. It works fine in one UART but after add another UART it became not stable. But it is not the problem of the NewSoftSerail. Forgive me.

Mikal,

I added it here: C:\arduino-0015\hardware\libraries\
I will also check using a PC, maybe there’s something wrong with my laptop.

Thanks,
Ron

RTS/CTS greatly needed.

Hello,

Using the NewSoftSerial to read data from a device @57600.
I connect one pin of the Arduino to the RX of the Device and i connect the ground of the arduino to the ground pin of the Serial Device.

I get some data, but it is not the same as on a direct
connection to a PC Terminal via e.g. Serial/USB Cable.

Is this a timming issue?
What could i check to fix this?

(Arduino Version 0016 and NewSoftSerial9)

Thank you all in advance for your support!

I get following HEX Data with NewSoftSerial but on the PC
i get e.g. Hex 7E instead of 40 a 7E HEX Data…
1
0
0
40
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
1
0
0
40
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
1
0
0

Best Regards,
Joe

Hello,

Great work with the NSS9. I’m currently trying to use the NSS9 with a hardware that’s sending inverted signals. How can I configure the library to work with this?

As I understand there are two things that need to be done.
1. the interupts need to be when the signal goes from low to high instead of high to low.

2. All the bits need to be inverted.

Thankful for any help.
Regards,
Henrik

I really need this to be able to do 7 bit

What code do I need to change to do this?
I have tried this but without success

// Read each of the 8 bits
- for (uint8_t i=0×1; i; i <<= 1)
+ for (uint8_t i=0×1; i; i <<= 0×7)

This is as far as I have got so far:

// Read each of the 8 bits
// for (uint8_t i=0×1; i; i <<= 1)
for (uint8_t i=0×1; i != 0×8; i <<= 1)
{
tunedDelay(_rx_delay_intrabit);
DebugPulse(13, 1);
uint8_t noti = ~i;
if (rx_pin_read())
d |= i;
else // else clause added to ensure function timing is ~balanced
d &= noti;
}

// skip the stop bit and parity bit
tunedDelay(_rx_delay_stopbit *2); //double the delay so that we cover both bits
// skip the stop bit
// tunedDelay(_rx_delay_stopbit);
DebugPulse(13, 1);

If I just add a second tunedDelay I get compile errors something about needing registers 28, 29 …

However I don’t get any decent data out of the port.
When I put a 1 in then I get two characters one with a DEC value of 1 and one with a DEC value of 7.

2 gives a 2 and a 7
3 gives a 3 and a 6
4 gives a 4 and a 7
5 gives a 5 and a 6
6 gives a 6 and a 6
7 gives a 7 and a 7
8 gives just a 7
9 gives a 1 and a 6

This is consistent but completely rubbish to me.

Switching back to the proper version with 8-bit works perfectly ;-)

Iain

Mikal – thanks heaps for your excellent work with this library. I am also after logical inversion for controlling some motors with inbuilt serial controllers – is there any chance you could forward me the email you sent to Henrick :)

Cheers,

Mike V

hi mikal

I seem to have problems with your library… I can recieve serial communication just fine,
but if I send something, it seems to only send the last 1-3 characters…

bluetooth.println(“INQUIRY 6″); comes back as “Ye6″.

What could be the reason for that?

Thanks for your help…
yves

Hi Mikal,
First, thanks so much for your work on “newsoftserial”. It’s greatly appreciated!

I’m running into a small problem reading a stream of packets from both the UART pins and the soft-serial pins. Here’s the link to the discussion:
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1246726142

I was wondering if you had any advice? Is it possible that UART serial interrupts and soft-serial interrupts can’t/won’t play nice? Do you have any suggestions?

Thanks again,
David

I have a few minor changes to NewSoftSerial v9. Specifically, adding a ‘sparebits’ argument to the begin() method for things like parity bits and extra stop bits. (The current version gets confused at 8 bits + parity). It doesn’t test whether the parity check is valid, but at least it doesn’t confuse it with a stop bit. (And it doesn’t do parity transmission properly, but it’s a start.)

It also adds a ‘deactivate()’ method, which is necessary because when the port is active, it loses ticks in the millisecond/microsecond counter whenever a character comes in. Therefore you have to deactivate the port to do accurate timing.

Where can I send the diffs so you can roll it into v10? (Contact me at the email I left in the mail entry for reply.)

Hi Mikal, you’re a hero!

I am using NSS to send NMEA data from a compass. However the loop is terminated and the board resets when I print a string to the NMEA port. Since print is inherited and not inside NSS, I cannot understand why this is a problem. Once I comment out the print statement, the sketch runs fine. The string is also printed fine with Serial.print.

I thought it could be a RAM problem, but the behaviour is the same with the 328 as the 168.

Best regards, Joachim

I am trying *desperately* to get some sort of serial communication working using the following scheme:

Baud Rate: 9600 NRZ
Serial Bit Format: 1 Start Bit
8 Data Bits
1 Mode Bit (basically a 9th data bit, not parity bit)
1 Stop Bit
11 Bits Total

LSB MSB
Start 0 1 2 3 4 5 6 7 Mode Stop

It’s a goofy ass protocol, I’ll admit – but I’m not the one that came up with it :)

Basically it’s a 9N1 format. I haven’t had much luck getting the Arduino hardware serial drivers to do this, and my AVR mojo isn’t strong enough to modify your code. Any chance to see this sometime soon? If not, can you give me enough information to get started?

To be honest, if $50 or so would motivate you to get this feature in the next week or so, my PayPal account is ready and waiting :)

Actually, ignore the above. I think I may have gotten it… Will test tomorrow and see! Thanks :)

Just downloaded NSS9. Is there a usage description somewhere? Function definition etc? New at this stuff so forgive me if it’s obvious.
Thanks
Len

G’day Mikal,

I want to add support for 10Mhz and was wondering how you came up with the delay figures in the DELAY_TABLE

Thanks,

Stephen…

@Mikal

sigh….that’s what I was afraid of, it would seem that I have some playing around to do :)

I think I’ll start off with some figures in between yours and take it from there.

I’ll send you through the patches when I’m done.

Stephen..

Hi Mikal,

I couldn’t find any contact info on the your website to send you through the patch for 10Mhz, so If you can ping me through an email at the address I’ve put on my comment I’ll send the patch through.

Regards,

Stephen….

Hello Mikal,

We writing article about Arduino.
And we want to introduce about NewSoftSerial and TinyGPS(with sketch, this site’s URL) in that article.
So can we about those?

Regards,

aminosan[The-MenZ]

Mikal,

Thank you so much!
If when published that magazine,
I’ll send a link your E-Mail!

Best Regards,

aminosan[The-MenZ]

I have a question. Is the a reason why the max read buffer is 64? I have a need to send and recieve up to 256 bytes per transfer at times. I can change the header to suit my needs, but I wanted to make sure there was not a reason. I ave the Arduino with 328 chip in it, and I have just started doing some dev and research with the Arduino.

Thanks.