W801 spi_init In function spi_set_endian () Have no effect, How to modify SPI The size end of the transmission

Use SPI_BYTE_TRANSFER and SPI_DMA_TRANSFER All methods have been tested, Are not feasible.

@SK2024 LCD Which is the driver chip?

@SK2024 with cpu Try setting the size end again and see if it works.

@isme ILI9341

@isme this Not very clear Where to set it Be at SDK In which file?

@SK2024

/***************************************************************************** 
* 
* File Name :  main. c
* 
* Description:  main 
* 
* Copyright  (c)  2014 Winner Micro Electronic Design Co. ,  Ltd.  
* All rights reserved.  
* 
* Author :  dave
* 
* Date :  2014-6-14
*****************************************************************************/ 
#include "wm_include. h"
#include "wm_hostspi. h"
#include "wm_gpio_afsel. h"

#define SPI_DATA_LEN    1508
void spi_set_endian1 (u8 endian) 
{
    u32 reg_val; 

    reg_val = tls_reg_read32 (HR_SPI_SPICFG_REG) ; 

    if  (endian == 0)  {
        reg_val &= ~ (0x01U  " " 3) ; 
        reg_val |= SPI_LITTLE_ENDIAN; 
    } else if (endian == 1)  {
        reg_val &= ~ (0x01U  " " 3) ; 
        reg_val |= SPI_BIG_ENDIAN; 
    }

    tls_reg_write32 (HR_SPI_SPICFG_REG,  reg_val) ; 
}

int spi_send_data () 
{
    int *p; 
    int i; 
    char *tx_buf = NULL; 

    /*MASTER SPI configuratioin*/
    wm_spi_cs_config (WM_IO_PB_04) ; 
    wm_spi_ck_config (WM_IO_PB_02) ; 
    wm_spi_di_config (WM_IO_PB_03) ; 
    wm_spi_do_config (WM_IO_PB_05) ; 
    printf ("\r\n") ; 
    printf ("cs--PB04,  ck--PB02,  di--PB03,  do--PB05; \r\n") ; 
    
    // 1 SPI_WORD_TRANSFER 2 SPI_DMA_TRANSFER
    tls_spi_trans_type (1) ; 
    // 0 SPI_LITTLE_ENDIAN 1 SPI_BIG_ENDIAN
    spi_set_endian1 (1) ; 
    tls_spi_setup (TLS_SPI_MODE_0,  TLS_SPI_CS_LOW,  2000000) ; 

    tx_buf = tls_mem_alloc (SPI_DATA_LEN) ; 
    if  (NULL == tx_buf) 
    {
        printf ("\nspi_demo tx mem err\n") ; 
        return WM_FAILED; 
    }    

    memset (tx_buf,   0,  SPI_DATA_LEN) ; 
    strcpy (tx_buf,  "data") ; 
    p =  (int *) &tx_buf[4]; 
    *p = 1500; 
    p ++; 
    for (i = 0; i  "  (SPI_DATA_LEN-8) /4; i ++)     
    {
        *p = 0x12345678; 
         p ++; 
    }
    printf ("SPI Master send 1500 byte,  modeA,  little endian\n") ;     

    tls_spi_write ( (u8 *) tx_buf,  SPI_DATA_LEN) ; 

    tls_mem_free (tx_buf) ; 
    
    printf ("after send\n") ; 
    return WM_SUCCESS; 
}


void UserMain (void) 
{
    printf ("\n user task \n") ; 
    spi_send_data () ; 
#if DEMO_CONSOLE
    CreateDemoTask () ; 
#endif
//user-owned task
}

@isme correction, disposition SPI Transmission mode and size end, Must be in tls_spi_setup later, Otherwise, it will be overwritten and will not take effect.

    tls_spi_setup (TLS_SPI_MODE_0,  TLS_SPI_CS_LOW,  2000000) ; 
    // 1 SPI_WORD_TRANSFER 2 SPI_DMA_TRANSFER
    tls_spi_trans_type (2) ; 
    // 0 SPI_LITTLE_ENDIAN 1 SPI_BIG_ENDIAN
    spi_set_endian1 (1) ; 

@isme Did not succeed, I added the code to modify the size end directly from your code, But set to 0 when, Still refresh blue, Set as 1 when, It cannot be refreshed, No longer show color

@SK2024 That means it's not a big or small end problem, You can run it through the logic analyzer. We went through a lot of testing, After this change, CPU way DMA way, The size end of the Settings has taken effect.

@isme Hello, May I ask if there is an open source path for this code, I want to refer to it, thank you!