|
Hi, Im chaining 3 EDMA blocks transfers. For all 3 blocks, I have specifed the completion interrupt codes (TCC) along with the link address (.rld) of the next block (NULL for the last). For the first block I specified a external interrupt (4) as the channel that starts the transfer ( EDMA_open(EXT_INT_4, EDMA_OPEN_RESET) ) but what do I use for the channel on the last 2 blocks? TIA, Erich |
|
|
EDMA Setup Question (General)
Started by ●May 30, 2002
Reply by ●May 30, 20022002-05-30
|
At 01:13 AM 5/30/2002 +0000, e90680 wrote: >Hi, > >Im chaining 3 EDMA blocks transfers. > >For all 3 blocks, I have specifed the completion interrupt codes >(TCC) along with the link address (.rld) of the next block >(NULL for the last). >For the first block I specified a external interrupt (4) as the >channel that starts the transfer ( EDMA_open(EXT_INT_4, >EDMA_OPEN_RESET) ) but what do I use for the channel on the >last 2 blocks? Use TCC8 for EXT_INT_4 completion code. and TCC9 for EDMA_CHA_TCC8 completion code. EDMA_open(EDMA_CHA_TCC8,) EDMA_open(EDMA_CHA_TCC9,) Andrew E. >TIA, >Erich > >_____________________________________ >Note: If you do a simple "reply" with your email client, only the author >of this message will receive your answer. You need to do a "reply all" if >you want your answer to be distributed to the entire group. > >_____________________________________ |
Reply by ●May 31, 20022002-05-31
|
Since my external interrupt is not hooked up yet, I thought I would give it a test run by issuing a: EDMA_setChannel(hndle_BLOCK1); from withing a PRD (clock based) interrupt. Unfortunately, the ISR defined for HWI_INT8 never occurs. I have BLOCK1's TCC Field set to: EDMA_CHA_TCC8, and it looks like the call to EDMA_config(hndle_BLOCK1, &EDMA_CONFIG_VAR); is in fact writing to the EDMA Parameter Table (0x01A00000). To isolate the problem, I set the link field of BLOCK1 to a NULL EDMA handle, but still no HWI_INT8. Thanks, Erich Date: Thu, 30 May 2002 08:47:24 -0400 From: "Andrew Elder" <> Reply-To: "Andrew Elder" <> To: "e90680" <>, <> Subject: Re: [c6x] EDMA Setup Question (General) At 01:13 AM 5/30/2002 +0000, e90680 wrote: >Hi, > >Im chaining 3 EDMA blocks transfers. > >For all 3 blocks, I have specifed the completion interrupt codes >(TCC) along with the link address (.rld) of the next block >(NULL for the last). >For the first block I specified a external interrupt (4) as the >channel that starts the transfer ( EDMA_open(EXT_INT_4, >EDMA_OPEN_RESET) ) but what do I use for the channel on the >last 2 blocks? Use TCC8 for EXT_INT_4 completion code. and TCC9 for EDMA_CHA_TCC8 completion code. EDMA_open(EDMA_CHA_TCC8,) EDMA_open(EDMA_CHA_TCC9,) Andrew E. >TIA, >Erich ---------------------- This message was sent using http://uk2.net NEWS - CHEAPEST DEDICATED SERVERS IN THE WORLD - 25/month FREE UK DIAL 0845 609 1370 - username uk2: - password: uk2 UK's FREE Domains, FREE Dialup, FREE Webdesign, FREE email |
