Part Number: AM13E23019
Other Parts Discussed in Thread: SYSCONFIG
Hello there
I am doing experiments with DMA in multiple modes. I am observing inconsistencies in DMA configuration. One of the example is when I configuring Single mode and repeat single mode back and forth, sometimes it sticks to repeat single mode and does not configure back to single mode. Please see the screenshot of the configuration.
on further evaluation i found that DMACTL registor is not updating as expected, I have to reset DMA Channel before DMA initialisation by calling api
DL_DMA_resetChannel(APP_DMACH_0_DMA_INST, APP_DMACH_0_CHANNEL_ID);
int main()
{
Device_Init();
DL_DMA_resetChannel(APP_DMACH_0_DMA_INST, APP_DMACH_0_CHANNEL_ID);
SYSCFG_DL_init();
/* DMA initialization and settings */
DL_DMA_setSrcAddr(APP_DMACH_0_DMA_INST, APP_DMACH_0_CHANNEL_ID, (uint32_t)tcf_txbuffer);
DL_DMA_setDestAddr(APP_DMACH_0_DMA_INST, APP_DMACH_0_CHANNEL_ID, (uint32_t)rxbuffer);
DL_DMA_setTransferSize(APP_DMACH_0_DMA_INST, APP_DMACH_0_CHANNEL_ID, MML_TX_BUFFER_SIZE_TCF);
DL_DMA_enableChannel(APP_DMACH_0_DMA_INST, APP_DMACH_0_CHANNEL_ID);
// Further code
}Is it expected to reset channel before DMA initilisation ?
what is reason for DMACTL not updating ?
