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| Search found 38 matches |
| Author | Message |
|---|---|
 Topic: PIC24 spewing CAN messages even in reset |
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| bryant@balancebitsconsult Replies: 2 Views: 2805 |
 Forum: General CCS C Discussion Posted: Wed Jun 19, 2024 5:01 pm Subject: PIC24 spewing CAN messages even in reset |
| Good news I suppose. We're on the same team - it seems there was a random device that was publishing CAN messages on the same lines that the PIC was connected to.
Fun times. PIC was fine all alo ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Wed May 22, 2024 6:21 pm Subject: CAN message interrupts stop after first interrupt serviced |
| hmm, I know, you've already thought of this but.....
... have you confirmed the CAN bus pullups / terminators are the correct values ? 'weird' stuff can happen with CAN....... Yes, all checked th ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Wed May 22, 2024 12:37 am Subject: CAN message interrupts stop after first interrupt serviced |
| Ok, this is fairly hideous, but it does work !!
I have implemented additional errata, including the DMA issue and one built already by CCS in the can-pic24_dsPIC33.c inside of can_getd() , you can ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Tue May 21, 2024 9:18 pm Subject: CAN message interrupts stop after first interrupt serviced |
| I am also seeing this in the errata -- I wonder if I am experiencing this too. I see that it is used in can_init().
15. Module: DMA When the DMA is set up for CAN receive, interrupts can someti ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Tue May 21, 2024 6:45 pm Subject: CAN message interrupts stop after first interrupt serviced |
| Ok, a little closer ... I think these are the registers, but I am never seeing these as > 0.
/***************************************** The ERRIF status flag (CiINTF[5]) ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Tue May 21, 2024 6:17 pm Subject: CAN message interrupts stop after first interrupt serviced |
| here's what I have so far
#include <main_can_sand.h> #include <stdint.h> #define CAN_PWR_EN PIN_D9 // Power PIN to turn on CAN to the MCU /********************************* ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Tue May 21, 2024 5:58 pm Subject: CAN message interrupts stop after first interrupt serviced |
| yes, I expect that I am never going to get a CAN_INTERRUPT_ERR.
I am a little stumped on the "right" way to inspect these ERROR flags every time. Is there a "best practices" ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Tue May 21, 2024 3:33 pm Subject: CAN message interrupts stop after first interrupt serviced |
| I will try this now. This seems very plausible. | |
| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Mon May 20, 2024 4:49 pm Subject: CAN message interrupts stop after first interrupt serviced |
| New code, shows that the interrupts I am receiving are CAN_INTERRUPT_INVALID.
Once I receive once of these interrupts, I never receive another CAN interrupt of any other type, as a result I cannot ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Mon May 20, 2024 2:02 pm Subject: CAN message interrupts stop after first interrupt serviced |
| Notable issue :
Module: CAN A transmit-interrupt event (even if it is disabled as an interrupt source) that happens immediately after the reception-interrupt event will cause the ICODE bits t ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Mon May 20, 2024 1:40 pm Subject: CAN message interrupts stop after first interrupt serviced |
| I just noticed there is quite a bit of errata on this chip including CAN & ECAN
on silicon revision B1.... You wouldn't be unlucky enough to be using this one? One thing it says if you are usi ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Mon May 20, 2024 1:26 pm Subject: CAN message interrupts stop after first interrupt serviced |
| I just noticed there is quite a bit of errata on this chip including CAN & ECAN
on silicon revision B1.... You wouldn't be unlucky enough to be using this one? One thing it says if you are usi ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Mon May 20, 2024 12:58 pm Subject: CAN message interrupts stop after first interrupt serviced |
| Interesting...trying to figure out to test this...
I have a PCAN adaptor connected to the CAN line that is sending a message once a second to this code. The code responds when it works correctly a ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Mon May 20, 2024 12:50 pm Subject: CAN message interrupts stop after first interrupt serviced |
| Compiler version?
v5.116 ALSO -- and this is weird -- The code will work correctly and ping-pong, as long as there is not a CAN Message on the bus when the board starts. If there is a m ... |
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| Topic: CAN message interrupts stop after first interrupt serviced |
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| bryant@balancebitsconsult Replies: 22 Views: 13868 |
Forum: General CCS C Discussion Posted: Mon May 20, 2024 12:33 pm Subject: CAN message interrupts stop after first interrupt serviced |
| Sample code seeing this behavior:
main_can_sand.h #include <24EP512GU810.h> #device ICSP=1 #use delay(clock=120MHz,oscillator=4MHz) #FUSES NOWDT //No Watc ... |
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