CCS/AM3352: EDMA init fails

user5954100

Part Number: AM3352

Tool/software: Code Composer Studio

I want to init 2 edma for my project,blow is my code:

EDMA3_RM_Handle app_EDMA_Init(void)
{
EDMA3_DRV_Result edmaResult = 0;

handle_edma_ad = (EDMA3_RM_Handle)edma3init(0, &edmaResult);
if(handle_edma_ad == NULL)
{
Radar_log("edma3init AD failed,error code is %d\n",edmaResult);
return NULL;
}

handle_edma_fft = (EDMA3_RM_Handle)edma3init(2, &edmaResult);
if(handle_edma_fft == NULL)
{
Radar_log("edma3init fft failed,error code is %d\n",edmaResult);
return NULL;
}

}

the first init is successed,but the second innt is failed.

can you help me to resolve this issue.

My PDK version is pdk_am335x_1_0_13 and the EDMA driver version is edma3_lld_2_12_05_30C

over 6 years ago

0 Pavel Botev over 6 years ago

TI__Guru**** 170625 points

Hello,

user5954100 said:
I want to init 2 edma for my project

user5954100 said:
edma3init(0, &edmaResult);

user5954100 said:
edma3init(2, &edmaResult);

AM335x device contains only one EDMA3. From what I understand, in edma3init() function we pass EDMA3 CC:

TPCC (EDMA3CC), base addr 0x49000000

We have only one EDMA3 CC.

Check below files for details:

pdk_am335x_1_0_16/packages/ti/drv/spi/soc/am335x/sample_arm_init.c
pdk_am335x_1_0_16/packages/ti/drv/spi/test/src/main_mcspi_test.c
pdk_am335x_1_0_16/packages/ti/drv/spi/soc/am335x/sample_am335x_cfg.c

edma3_lld_2_12_05_30E/packages/ti/sdo/edma3/rm/sample/src/platforms/sample_am335x_cfg.c
edma3_lld_2_12_05_30E/packages/ti/sdo/edma3/drv/sample/src/platforms/sample_am335x_cfg.c

Check also below e2e threads:

https://e2e.ti.com/support/legacy_forums/embedded/tirtos/f/355/t/126883

https://e2e.ti.com/support/processors/f/791/t/51248

Regards,
Pavel

0 user5954100 over 6 years ago in reply to Pavel Botev

Expert 1690 points

Hi Pavel

I see,Thank you!

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CCS/AM3352: EDMA init fails