杰理AD14N/AD15N---串口中断问题

由于AD15的SDK中，uart_dev.c文件中没有串口中断的demo，所以之前的项目一直用read的方式去读串口数据，但是这种读的方式是阻塞的方式，所以不太好用，今天做了个项目，也要用到串口，于是又研究了以下AD15的串口中断问题，摸索了下调通了代码如下：

#include "app_config.h"
#include "includes.h"
#include "asm/power_interface.h"
#include "asm/power/p33.h"
#include "cpu.h"
#include "uart_dev.h"

#define LOG_TAG_CONST       NORM
#define LOG_TAG             "[uart]"
#include "debug.h"

#if 1
#include "typedef.h"
#define DMA_BUF_LEN2			64



static u8 tmp_buf[DMA_BUF_LEN2] = {0};
static u8 usr_uart_buf[DMA_BUF_LEN2] __attribute__((aligned(4)));
static const uart_bus_t *ut0 = NULL;
extern const uart_bus_t *uart_dev_open(const struct uart_platform_data_t *arg);
void usr_uart_recieve(u8*data,u16 len);

static void usr_uart_isr_hook(void *arg, u32 status)
{
    const uart_bus_t *ubus = arg;

    if (status == UT_RX_OT) {
        u32 len = ubus->read(tmp_buf, 64, 0);
        if (len != 0) {
            usr_uart_recieve(tmp_buf,len);
           // log_info("uart_rx_ot len : %d", len);
           // log_info_hexdump(tmp_buf, len);
        }
    }
}

static int uart_dev_init(const uart_bus_t *ut)
{
    memset((void *)usr_uart_buf, 0, sizeof(usr_uart_buf));
    struct uart_platform_data_t arg;
    arg.tx_pin = IO_PORTA_06;
    arg.rx_pin = IO_PORTA_07;
    arg.rx_cbuf = usr_uart_buf;
    arg.rx_cbuf_size = 64;//
    arg.frame_length = 64;//
    arg.rx_timeout = 20;
    arg.isr_cbfun = usr_uart_isr_hook;
    arg.argv = JL_UT0;
    arg.is_9bit = 0;
    arg.baud = 115200;
    ut = uart_dev_open(&arg);
    if (NULL != ut) {
        return 0;
    } else {
        return -1;
    }
}

void usr_uart_init(void)
{
    if (0 != uart_dev_init(ut0)) {
        log_info("######uart_usr init fail!\n");
        return;
    }
}


static void UT0_putbyte(char a)
{
    if (JL_UT0->CON & BIT(0)) {
        JL_UT0->BUF = a;
        __asm__ volatile("csync");
        if ((JL_UT0->CON & BIT(2)) == 0) {
            while ((JL_UT0->CON & BIT(15)) == 0);
            JL_UT0->CON |= BIT(13);
        }
    }
}

void usr_uart_send(u8* data,u16 len)///串口1发送函数
{
    u16 i=0;
    for (i = 0; i < len; i ++) {
        UT0_putbyte(*(data + i));
    }
}

void usr_uart_recieve(u8*data,u16 len)///串口1接收回调函数
{
    log_info("uart_recieve_len: %d\n",len);
    log_info_hexdump(data, len);
}






#endif

工程中需要包含uart_dev.c

另外要注意串口0不支持DMA，串口1可支持DMA.

方案开发，技术交流可联系微信：life5270