SPI发送触发看门狗自动复位

[fantasy]

开发板是nodemcu esp32
esp-idf v4.3
代码如下

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1. void app_main(void)
2. {
3.     //SPI测试代码
4.     luat_spi_t spi = {
5.             .id =2,
6.             .CPHA = 0,
7.             .CPOL = 0,
8.             .bit_dict = 8,
9.             .master = 0,
10.             .mode = 0,
11.             .cs = 5,
12.             .bandrate = 20*1000*1000
13.     };
14.     if (luat_spi_setup(&spi) == 0)
15.     {
16.         printf("spi setup  success\n");
17.     }
18.     printf("luat_spi_transfer: %d",luat_spi_transfer(2,"0x9F",recv_buf,1));
19.     char* recv_buf0 = "";
20.     printf("luat_spi_transfer: %d",luat_spi_transfer(2,"0x00",recv_buf0,1));
21.     printf(recv_buf0);
22.     char* recv_buf1 = "";
23.     printf("luat_spi_transfer: %d",luat_spi_transfer(2,"0x00",recv_buf1,1));
24.     printf(recv_buf1);
25.     char* recv_buf2 = "";
26.     printf("luat_spi_transfer: %d",luat_spi_transfer(2,"0x00",recv_buf2,1));
27.     printf(recv_buf2);
28. }
29. //十六进制字符串转uint8_t
30. uint8_t AsciiToHex8(const char * src)
31. {
32.     luat_log_log(1,LUAT_LOG_TAG," hex str: %s\n",src);
33.     char* src0;
34.     uint8_t ret;
35.     ret = strtol(src,&src0,16);
36.     luat_log_log(1,LUAT_LOG_TAG,"ret: %x\n",ret);
37.     return ret;
38. }
39. //SPI收发
40. int luat_spi_transfer(int spi_id, const char *send_buf, char *recv_buf, size_t length)
41. {
42.     //判断是否超出32位 超过续开启DMA
43.     if(length*8 > 32)
44.     {
45.         luat_log_error(LUAT_LOG_TAG,"Data exceeds 32 bits");
46.         return -1;
47.     }
48.     //判断长度是否为0 为0则不发送
49.     if(length == 0)
50.     {
51.         luat_log_error(LUAT_LOG_TAG,"Data length can't be 0");
52.         return -1;
53.     }
54.     //判断SPI ID是否合法
55.     if (spi_id == 1 || spi_id == 2)
56.     {
57.         //初始化发送配珠
58.         printf("init spi_transaction_t");
59.         uint8_t *hex_recv_buf = NULL;
60.         spi_transaction_t t;
61.         memset(&t,0,sizeof(t));
62.         luat_log_debug(LUAT_LOG_TAG,"Data is %d byte\n",length);
63.         t.length = length*8;
64.         //将数据转换成uint8_t
65.         printf("convert spi_transaction_t");
66.         uint8_t hex_send_buf = AsciiToHex8(send_buf);
67.         luat_log_debug(LUAT_LOG_TAG,"AsciiToHex8 %x\n",hex_send_buf);
68.         t.tx_buffer = hex_send_buf;
69.         luat_log_debug(LUAT_LOG_TAG,"Recv Hex\n");
70.         t.rx_buffer = hex_recv_buf;
71.         printf("send spi_transaction_t");
72.         esp_err_t ret = spi_device_transmit(spi_h, &t);
73.         if (ret != ESP_OK)
74.             return -1;
75.         HexToAscii(hex_recv_buf,recv_buf,sizeof(hex_recv_buf));
76.         luat_log_log(1,LUAT_LOG_TAG,"SPI recv error check: %d\n",ret);
77.     }
78.     return 0;
79. }

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