润和开发板Neptune的UART案例怎么调试

先说问题

Neptune开放版，调试Demo只实现了UART0可以输出，而且是和Type-C一个接口，UART1~4都没有输出。

我的项目来源

通过VScode的DevEco Device Tool插件，创建项目向导选择Neptune开发板的iot工程，里面有Demo。

其中一个案例的代码

#include 

#include 

#include "ohos_init.h"
#include "cmsis_os2.h"
#include "wifiiot_uart.h"
#include "wifiiot_uart_ex.h"
#include "wifiiot_gpio.h"
#include "wifiiot_gpio_ex.h"

#define UART_TASK_STACK_SIZE 512
#define UART_TASK_PRIO 25
#define TEST_UART_SIZE 8
#define INIT_BAUD_RATE 115200
#define TEST_BUF_SIZE 2048
#define UART_PORT WIFI_IOT_UART_IDX_1
unsigned char uart1ReadBuff[2048] = {0};

static void *UartTask(const char *arg)
{
    (void)arg;
    unsigned int ret;
    int len;
    unsigned char uartWriteBuff[] = "hello uart!";

    WifiIotUartAttribute uartAttr;
    uartAttr.baudRate = INIT_BAUD_RATE,
    uartAttr.dataBits = WIFI_IOT_UART_DATA_BIT_8;
    uartAttr.stopBits = WIFI_IOT_UART_STOP_BIT_1;
    uartAttr.parity = WIFI_IOT_UART_PARITY_NONE;
    uartAttr.pad ='M';

    WifiIotUartExtraAttr extraAttr;
    (void)memset_s(&extraAttr, sizeof(WifiIotUartExtraAttr), 0, sizeof(WifiIotUartExtraAttr));
    extraAttr.txFifoLine = WIFI_IOT_FIFO_LINE_ONE_EIGHT;
    extraAttr.rxFifoLine = WIFI_IOT_FIFO_LINE_SEVEN_EIGHTS;
    extraAttr.flowFifoLine = WIFI_IOT_FIFO_LINE_ONE_EIGHT;
    extraAttr.txBlock = WIFI_IOT_UART_BLOCK_STATE_BLOCK;
    extraAttr.rxBlock = WIFI_IOT_UART_BLOCK_STATE_BLOCK;
    extraAttr.txBufSize = TEST_BUF_SIZE;
    extraAttr.rxBufSize = TEST_BUF_SIZE;
    extraAttr.txUseDma = WIFI_IOT_UART_USE_DMA;
    extraAttr.rxUseDma = WIFI_IOT_UART_USE_DMA;

    ret = UartDeinit(UART_PORT);

    ret = UartInit(UART_PORT, &uartAttr, &extraAttr);    
while (1) {
    len = UartWrite(UART_PORT, uartWriteBuff, sizeof(uartWriteBuff));
        osDelay(400);
        len = UartRead(UART_PORT, uart1ReadBuff, sizeof(uart1ReadBuff));
        printf("UART 1 Read Len %d \n", len);
        if(len > 0)
            UartWrite(UART_PORT, uart1ReadBuff, len);
    }

    return NULL;
}

static void UartExampleEntry(void)
{
    osThreadAttr_t attr;

    attr.name = "UartTask";
    attr.attr_bits = 0U;
    attr.cb_mem = NULL;
    attr.cb_size = 0U;
    attr.stack_mem = NULL;
    attr.stack_size = UART_TASK_STACK_SIZE;
    attr.priority = UART_TASK_PRIO;
    printf("[UartExample] create UartTask!\n");
    if (osThreadNew((osThreadFunc_t)UartTask, NULL, &attr) == NULL) {
        printf("[UartExample] Falied to create UartTask!\n");
    }
}

SYS_RUN(UartExampleEntry);

代码都是一样的，只有UART0正常，其他的都输出不了，

把几个UART都 Rx Tx进行短接。 printf("UART 1 Read Len %d \n", len);打印出来的一直是0