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MSP432E411Y: About μDMA needs to be reconfigured or not when QSSI setting is changed .

Guru 15200 points

Part Number: MSP432E411Y

Hello,

I’m using MSP411Y and transmitting the data through QSSI and μDMA.

I’d like to know about whether μDMA needs to be reconfigured or not when QSSI setting is changed.

The settings in the following procedure

(1)   QSSI All Ports Disable (SSICR1 SEE0)

↓

(2)   QSSI All Ports settings (SSICPSR , SSICR0)

↓

(3)   DMA Enable1 (RCGCDMA 1)

↓

(4)   DMA Enable2 (DMACFG MASTER 1)

↓

(5)   QSSI All Ports Enable (SSICR1 SEE1)

・

・

・

(6)   QSSI Port #1 Disable (SSICR1 SEE0)

↓

(7)   QSSI Port #1 Change settings (Ex.bps)

↓

(8)   QSSI Port #1 Enable (SSICR1 SEE1)

 

If I'd like to use DMA through QSSI Port 1 or any other port after changing the QSSI Port #1 , Does it affect the operation of DMA?

In other words, if (3) is set only once in the order of (1) (2) (3) at startup, is there need to reconfigure (1) (2) (3) after (6)(7)(8)?

Regards,

Koki Tamai