How to transfer 2D array data to SPIM

[YaIs_283501]

I created a sample program that transfers data of two-dimensional array to SPIM, but I have not performed the assumed operation.

2 bytes of data is transferred when setting the following to transfer 1 byte.

/* Step3 :CyDmaTdSetConfiguration - Configures the TD: */

CyDmaTdSetConfiguration(DMA_TD[0], 1 , DMA_TD[0] , DMA_TX_M__TD_TERMOUT_EN | CY_DMA_TD_INC_SRC_ADR );

Transfer setting of data larger than 2 bytes operates as expected.

How can I fix it?

P.S.

I am trying the above thing because I am planning to make image data of the graphic LCD(LS027B7DH01A) operate with DMA.

Attach the operation waveform.

[EvPa_264126]

can it be transmitted as one-dimensional?

uint8 *array;

.......

CyDmaTdSetConfiguration(DMA_TD[0], (HEIGHT*WIDTH) , DMA_TD[0] , DMA_TX_M__TD_TERMOUT_EN | CY_DMA_TD_INC_SRC_ADR );

CyDmaTdSetAddress(DMA_TD[0], LO16((uint32)&array[0]), LO16((uint32)SPIM_TXDATA_PTR)); 

.....

void main()

{

array = data_buf;

...............

[YaIs_283501]

Thank you for your reply.

I transfered from a two-dimensional array to a one-dimensional array.

It is possible to transfer all data in both 2D array and 1D array without problems.

The problem is one byte of DMA transfer at a time.

Currently 1 byte transfer is made according to the following settings,

but 2 bytes are transferred at a time as shown in the attached picture.

CyDmaTdSetConfiguration(DMA_TD[0], 1 , DMA_TD[0] , DMA_TX_M__TD_TERMOUT_EN | CY_DMA_TD_INC_SRC_ADR );

[EvPa_264126 · Accepted solution]

only picture

[YaIs_283501]

Thank you for the analysis.