Bap28 HSerin vs Hserin2 Timeouts... New builds...

KurtEck · **Joined:** Tue Nov 21, 2006 9:34 am **Posts:** 291

Hi Nathan,

I ran into some of problems of my updated XBee code running on a BAP28, which I converted the calls from HSERIN to HSERIN2. i.e. I am working on merging my code bases and would like to reduce the #ifdefs...

I started running into a bunch of unexpected timeouts on hserin2 calls. I converted my code back to hserin calls and it worked. So I created a simple test program:

Code:

ENABLEHSERIAL

sethserial H62500, H8DATABITS,HNOPARITY,H1STOPBITS
b1      var   byte

Loop:
   pause 10
   low p4
   hserin   100000, TO1, [b1]   
   high p4
   goto HS2
TO1:
   high p4
   toggle P5   

HS2:
   pause 10
   low p4   
   hserin2   100000, TO2, [b1]   
   high p4
   goto Loop
TO2:
   high P4
   toggle P6
   goto loop   
   

Could be simpler, but I wanted to have a bunch of outputs that I could test with the logic Analyzer. I found looking at the analyzer that:
Hserin with a time out of 100000 timed out after approx: 51.87ms which is close enough, but the hserin2 timed out at about: 24.75us (yes us...)

I am using build 32 of studio.

Kurt

Acidtech · **Posted:** Wed Jul 21, 2010 8:45 am

I'll take alook at it. I must have trashed the timeout variabel when I made hserin and hserin2 swappable. Kurt can you send me an email reminder about this so I don't forget?

KurtEck · **Joined:** Tue Nov 21, 2006 9:34 am **Posts:** 291

Will Do. Also updated the program to not need hardware to see...

Code:

ENABLEHSERIAL

sethserial H62500, H8DATABITS,HNOPARITY,H1STOPBITS
b1      var   byte
DT      var word
ROK      var byte

TMRW = 0x80      ; start timer
TCRW = 0x30      ; increment on 8 clocks

Main:
   ROK = 0
   TCNT = 0   ; clear counter
   hserin   50000, MTO1, [b1]   
   ROK = 1
MTO1:
   DT = TCNT
   serout s_out, i9600, ["HS ", dec ROK, " ", dec DT, 13]

   ROK = 0
   TCNT = 0   ; clear counter
   hserin2   50000, MTO2, [b1]   
   ROK = 1
MTO2:
   DT = TCNT
   serout s_out, i9600, ["HS2 ", dec ROK, " ", dec DT, 13]
   pause 500
   goto Main

I changed the timeout so it would fit in TimerW counter...

Output was:

Code:

Will send you simple program in email as well.

Kurt

Acidtech · **Posted:** Thu Jul 22, 2010 9:37 am

Kurt, What version of Studio are you using? 1.0.0.32?

KurtEck · **Joined:** Tue Nov 21, 2006 9:34 am **Posts:** 291

Acidtech wrote:

1.0.0.32?

Yes

Kurt

Acidtech · **Posted:** Fri Jul 23, 2010 8:31 am

I should be able to fix this this weekend I think.

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