Tuya Developer Forum

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  我也看了SPI上面的语句，提示全双工有问题？能否帮忙看看如何处理，  因为有时候我们要使用外挂FLASH,这个时候应该如何读取，有没有相关例子？

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void tuya_spi_test1(void)
{
    OPERATE_RET ret;
    TUYA_SPI_BASE_CFG_T cfg;
    TUYA_SPI_STATUS_T status；
    //receive buffer
    char rcv_buf[8];
    //data to send
    char send_buf[8] = {0,1,2,3,4,5,6,7};
    tkl_io_pinmux_config(TUYA_IO_PIN_0, TUYA_SPI0_MISO);
    tkl_io_pinmux_config(TUYA_IO_PIN_1, TUYA_SPI0_MOSI);
    // tkl_io_pinmux_config(TUYA_IO_PIN_2, TUYA_SPI0_CS); //使用GPIO拉管脚可不配置使用。
    tkl_io_pinmux_config(TUYA_IO_PIN_3, TUYA_SPI0_CLK);
    

cfg.role = TUYA_SPI_ROLE_MASTER;
cfg.mode = TUYA_SPI_MODE0;
cfg.type = TUYA_SPI_AUTO_TYPE;
cfg.databits = TUYA_SPI_DATA_BIT8；
cfg.bitorder = TUYA_SPI_ORDER_MSB2LSB；
cfg.freq_hz = 1000000；

ret = tkl_spi_init(TUYA_SPI_NUM_0, &cfg);
if (ret != OPRT_OK) {
    //fail
    return;
}

ret = tkl_spi_send(TUYA_SPI_NUM_0, send_buf, 8);
if (ret < 0) {
    //failed
}

tkl_spi_get_status(TUYA_SPI_NUM_0, &status);
while (status.busy) {
    tkl_spi_get_status(TUYA_SPI_NUM_0, &status);
    tkl_system_sleep(2);
}

ret = tkl_spi_recv(TUYA_SPI_NUM_0, rcv_buf, 8);
if (ret < 0) {
    //failed
}

tkl_spi_get_status(TUYA_SPI_NUM_0, &status);
while (status.busy) {
    tkl_spi_get_status(TUYA_SPI_NUM_0, &status);
    tkl_system_sleep(2);
}
ret = tkl_spi_transfer(TUYA_SPI_NUM_0, send_buf,rcv_buf, 6);
if (ret < 0) {
    //failed
}

tkl_spi_get_status(TUYA_SPI_NUM_0, &status);
while (status.busy) {
    tkl_spi_get_status(TUYA_SPI_NUM_0, &status);
    tkl_system_sleep(2);
}
//uninitialize iic 
ret = tkl_spi_deinit(TUYA_SPI_NUM_0);
if (ret != 0) {
   //failed
}
}