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| Search found 8 matches |
| Author | Message |
|---|---|
 Topic: Byte error rate 10% with SPI |
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| lglenat Replies: 19 Views: 26647 |
 Forum: General CCS C Discussion Posted: Wed May 18, 2011 11:59 am Subject: Byte error rate 10% with SPI |
It's working now  !
However, in my full code (in which i use spi) there are some inputs (from sensors, switchs, external interrupts etc.). Do you think that will cause the same problem, even i ... |
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| Topic: Byte error rate 10% with SPI |
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| lglenat Replies: 19 Views: 26647 |
Forum: General CCS C Discussion Posted: Fri May 13, 2011 1:23 pm Subject: Byte error rate 10% with SPI |
| Ok. Thank you !
I will try with 16F PICs to test my code, but i will be better for my purpose to make it work on 18F. I hope I will not have to develop a software spi instead of using hardware mssp m ... |
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| Topic: Byte error rate 10% with SPI |
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| lglenat Replies: 19 Views: 26647 |
Forum: General CCS C Discussion Posted: Wed May 11, 2011 2:16 pm Subject: Byte error rate 10% with SPI |
| Or it could be a test program issue. I didn't really look too closely at your
test program. I don't have time to put together a hardware test setup today. Maybe I could do that tomorrow and test ... |
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| Topic: Byte error rate 10% with SPI |
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| lglenat Replies: 19 Views: 26647 |
Forum: General CCS C Discussion Posted: Wed May 11, 2011 12:46 pm Subject: Byte error rate 10% with SPI |
| - I just tried with two PIC18F2520 and I got the same problem.
- I change the board to eliminate this parameter. - I tried to use a 20MHz crystal, pull-up resistors, changed nothing. - When I ... |
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| Topic: Byte error rate 10% with SPI |
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| lglenat Replies: 19 Views: 26647 |
Forum: General CCS C Discussion Posted: Tue May 10, 2011 12:28 pm Subject: Byte error rate 10% with SPI |
| From that info I would guess your SPI pull-up resistors are too high
I didn't kwow that spi required pull-up resistors. On what lines do you suggest I have to put pull-up resistors ? |
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| Topic: Byte error rate 10% with SPI |
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| lglenat Replies: 19 Views: 26647 |
Forum: General CCS C Discussion Posted: Mon May 09, 2011 3:34 pm Subject: Byte error rate 10% with SPI |
| @ PCM programmer
The PICs are on the same board, with same ground, same power supply. The power supply voltage is 5V from a 1.5A DC regulated power supply, that is good power supply I think. I t ... |
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| Topic: Byte error rate 10% with SPI |
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| lglenat Replies: 19 Views: 26647 |
Forum: General CCS C Discussion Posted: Mon May 09, 2011 11:02 am Subject: Byte error rate 10% with SPI |
| Ok I will try with a crystal as soon as possible...
@PCM programmer : - The two PICs are not on a PCB but on a prototyping board (white, with components linked with wires) - The PICs are conn ... |
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| Topic: Byte error rate 10% with SPI |
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| lglenat Replies: 19 Views: 26647 |
Forum: General CCS C Discussion Posted: Sun May 08, 2011 12:35 pm Subject: Byte error rate 10% with SPI |
| Hi !
I'm trying to use SPI communication between a master and a slave, both PIC18F2523. I think I'm doing that right, but when I compare the byte returned by the slave after a request of the maste ... |
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