W801 串口长数据接收

底层在哪个文件里面, 可以告诉一下嘛

@Diviner

/**
 * @file    wm_uart_demo. c
 *
 * @brief   uart demo function
 *
 * @author  dave
 *
 * Copyright  (c)  2015 Winner Microelectronics Co. ,  Ltd. 
 */

#include  string. h 
#include "wm_include. h"
#include "wm_http_fwup. h"
#include "wm_sockets. h"
#include "wm_cpu. h"
#include "wm_demo. h"

#include "wm_gpio_afsel. h"
#include "user_protocol. h"

#define USE_DMA_TX_FTR  1
#if USE_DMA_TX_FTR
#include "wm_dma. h"
extern int tls_uart_dma_off (u16 uart_no) ; 
#endif

#define USER_UART_TASK_PRIO     51
#define USER_UART_TAST_STK_SIZE    1024
#define DEMO_UART_RX_BUF_SIZE    128

static OS_STK   user_uart_task_stk[USER_UART_TAST_STK_SIZE]; 


/**
 * @typedef struct DEMO_UART
 */
typedef struct DEMO_UART
{
    tls_os_queue_t *demo_uart_q; 
    //    OS_STK *user_uart_task_stk; 
    int bandrate; 
    TLS_UART_PMODE_T parity; 
    TLS_UART_STOPBITS_T stopbits; 
    char *rx_buf; 
    int rx_msg_num; 
    int rx_data_len; 
} USER_UART_ST; 

static USER_UART_ST *demo_uart = NULL; 

#if USE_DMA_TX_FTR
static void uart_dma_done (void *uart_no) 
{
    u16 ch = * ( (u16 *) uart_no) ; 
    tls_uart_dma_off (ch) ; 
}
#endif

void fifo_idle () 
{
    // printf ("---  %s\r\n", __func__) ; 
    
    // printf ("---  len: %d\n",  demo_uart- rx_data_len) ; 
    tls_os_queue_send (demo_uart- demo_uart_q,   (void *)  DEMO_MSG_UART_RECEIVE_DATA,  0) ; 
}

static s16 demo_uart_rx (u16 len) 
{
    // printf ("%d\n", len) ; 
    if  (NULL == demo_uart) 
    {
        return WM_FAILED; 
    }

    demo_uart- rx_data_len += len; 
    if  (demo_uart- rx_msg_num   3) 
    {
        demo_uart- rx_msg_num++; 
        // tls_os_queue_send (demo_uart- demo_uart_q,   (void *)  DEMO_MSG_UART_RECEIVE_DATA,  0) ; 
    }

    return WM_SUCCESS; 
}

static void user_uart_task (void *sdata) 
{
    USER_UART_ST *uart =  (USER_UART_ST *)  sdata; 
    tls_uart_options_t opt; 
    void *msg; 
    int ret = 0; 
    int len = 0; 
    int rx_len = 0; 

    for  (; ; ) 
    {
        tls_os_queue_receive (uart- demo_uart_q,   (void **)  &msg,  0,  0) ; 
        switch  ( (u32)  msg) 
        {
        case DEMO_MSG_OPEN_UART: 
        {
            opt. baudrate = uart- bandrate; 
            opt. paritytype = uart- parity; 
            opt. stopbits = uart- stopbits; 
            opt. charlength = TLS_UART_CHSIZE_8BIT; 
            opt. flow_ctrl = TLS_UART_FLOW_CTRL_NONE; 

            /* UART1_RX-PB07  UART1_TX-PB06 */
            wm_uart1_rx_config (WM_IO_PB_07) ; 
            wm_uart1_tx_config (WM_IO_PB_06) ; 
            if  (WM_SUCCESS ! = tls_uart_port_init (TLS_UART_1,  &opt,  0) ) 
            {
                printf ("uart1 init error\n") ; 
            }
            tls_uart_rx_callback_register ( (u16)  TLS_UART_1,   (s16 (*)  (u16,  void*) ) demo_uart_rx,  NULL) ; 
        }
        break; 

        case DEMO_MSG_UART_RECEIVE_DATA: 
        {
            rx_len = uart- rx_data_len; 
            // printf ("rx_len: %d\n",  rx_len) ; 
            while  (rx_len   0) 
            {
                len =  (rx_len   DEMO_UART_RX_BUF_SIZE)  ?  DEMO_UART_RX_BUF_SIZE :  rx_len; 
                memset (uart- rx_buf,  0,   (DEMO_UART_RX_BUF_SIZE + 1) ) ; 
                ret = tls_uart_read (TLS_UART_1,   (u8 *)  uart- rx_buf,  len) ;   /* input */
                if  (ret  = 0) 
                {
                    break; 
                }
                rx_len -= ret; 
                uart- rx_data_len -= ret; 

                meter_data_receive ( (u8 *) uart- rx_buf,  len) ; 
// #if USE_DMA_TX_FTR
//                 // printf ("rx_len: %d\n",  len) ; 
//                 tls_uart_dma_write (uart- rx_buf,  len,  uart_dma_done,  TLS_UART_1) ; 
// #else
//                 tls_uart_write (TLS_UART_1,  uart- rx_buf,  ret) ;   /* output */
// #endif
            }
            if  (uart- rx_msg_num   0) 
            {
                uart- rx_msg_num--; 
            }
        }
        break; 

        default: 
            break; 
        }
    }
}



int uart_demo (int bandrate,  int parity,  int stopbits) 
{
    printf ("\nuart demo param=%d,  %d,  %d\n",  bandrate,  parity,  stopbits) ; 
    if  (NULL == demo_uart) 
    {
        demo_uart = tls_mem_alloc (sizeof (USER_UART_ST) ) ; 
        if  (NULL == demo_uart) 
        {
            goto _error; 
        }
        memset (demo_uart,  0,  sizeof (USER_UART_ST) ) ; 

        demo_uart- rx_buf = tls_mem_alloc (DEMO_UART_RX_BUF_SIZE + 1) ; 
        if  (NULL == demo_uart- rx_buf) 
        {
            goto _error1; 
        }
        tls_os_queue_create (& (demo_uart- demo_uart_q) ,  DEMO_QUEUE_SIZE) ; 
        tls_os_task_create (NULL,  "uart", 
                           user_uart_task, 
                            (void *)  demo_uart, 
                            (void *)  user_uart_task_stk,  /** 任务栈的起始地址 */
                           USER_UART_TAST_STK_SIZE,                          /** 任务栈的大小     */
                           USER_UART_TASK_PRIO,  0) ; 
    }
    if  (-1 == bandrate) 
    {
        bandrate = 115200; 
    }
    if  (-1 == parity) 
    {
        parity = TLS_UART_PMODE_DISABLED; 
    }
    if  (-1 == stopbits) 
    {
        stopbits = TLS_UART_ONE_STOPBITS; 
    }
    demo_uart- bandrate = bandrate; 
    demo_uart- parity =  (TLS_UART_PMODE_T)  parity; 
    demo_uart- stopbits =  (TLS_UART_STOPBITS_T)  stopbits; 
    demo_uart- rx_msg_num = 0; 
    demo_uart- rx_data_len = 0; 
    tls_os_queue_send (demo_uart- demo_uart_q,   (void *)  DEMO_MSG_OPEN_UART,  0) ; 

    return WM_SUCCESS; 

_error1: 
    tls_mem_free (demo_uart) ; 
    demo_uart = NULL; 
_error: 
    printf ("\nmem error\n") ; 
    return WM_FAILED; 
}

解决了, 谢谢大佬

@isme 请问 W802 我在串口接收中断中用 tls_uart_read 函数去接收, 长数据也会触发多次中断分多次接收, 一次最多接收 16 字节, 参数 3 给再大也是一样, 跳转到 tls_uart_read 函数里面发现宏定义 TLS_UART_RX_BUF_SIZE, 然后从 512 改成 4096 也是一样, 不太懂原理, 谢谢大佬能够解答!