SPI接收报错问题

[fantasy]

开发板是NodeMCU ESP32
esp-idf版本是4.3

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1. //下面是主函数里的测试用代码
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 = 40*1000*1000
13.     };
14.     if (luat_spi_setup(&spi) == 0)
15.     {
16.         printf("spi setup  success\n");
17.     }
18.     char* recv_buf = "";
19.     printf("send: %d\n",luat_spi_send(2,"0x9f",8));
20.     printf("send: %d\n",luat_spi_send(2,"0x00",8));
21.     luat_spi_recv(2,recv_buf,8);
22.     printf("recv: %s\n",recv_buf);
23.     printf("send: %d\n",luat_spi_send(2,"0x00",8));
24.     luat_spi_recv(2,recv_buf,8);
25.     printf("recv: %s\n",recv_buf);
26. //  printf("luat_spi_transfer %d\n",luat_spi_transfer(2,"0x00",recv_buf,8));
27. //  printf(recv_buf);
28.     printf("\n");
29. //  printf("luat_spi_transfer %d\n",luat_spi_transfer(2,"0x00",recv_buf,8));
30.     printf("\n");
31. //  printf(recv_buf);
32. }
33. //该函数将十六进制字符串转成十进制uint8
34. uint8_t convert(char * src)
35. {
36.     luat_log_log(1,LUAT_LOG_TAG," hex str: %s\n",src);
37.     char* src0;
38.     uint8_t ret;
39.     ret = strtol(src,&src0,16);
40.     luat_log_log(1,LUAT_LOG_TAG,"ret: %x\n",ret);
41.     return ret;
42. }
43. //收发函数
44. int luat_spi_recv(int spi_id, char *recv_buf, size_t length)
45. {
46.     if (spi_id == 1 || spi_id == 2)
47.     {
48.         spi_transaction_t t;
49.         memset(&t,0,sizeof(t));
50.         t.length = sizeof(uint8_t) * 8;
51.         t.rx_buffer = recv_buf;
52.         t.tx_buffer = NULL;
53.         esp_err_t ret = spi_device_transmit(spi_h, &t);
54.         luat_log_log(1,LUAT_LOG_TAG,"SPI recv error check: %d\n",ret);
55.         if (ret == ESP_OK)
56.             return 0;
57.     }
58.     return -1;
59. }
60. //发函数
61. int luat_spi_send(int spi_id, const char *send_buf, size_t length)
62. {
63.     if (spi_id == 1 || spi_id == 2)
64.     {
65.         spi_transaction_t t;
66.         memset(&t,0,sizeof(t));
67.         uint8_t hsend_buf = convert(send_buf);
68.         t.length = sizeof(uint8_t) * 8;
69.         t.tx_buffer = &hsend_buf;
70.                 //下面一行代码报错 直接崩溃重启
71.         esp_err_t ret = spi_device_transmit(spi_h, &t);
72.         luat_log_log(1,LUAT_LOG_TAG,"SPI recv error check: %d\n",ret);
73.         if(ret == ESP_OK)
74.             return 0;
75.     }
76.     return -1;
77. }
78. //收函数
79. int luat_spi_recv(int spi_id, char *recv_buf, size_t length)
80. {
81.     if (spi_id == 1 || spi_id == 2)
82.     {
83.         spi_transaction_t t;
84.         memset(&t,0,sizeof(t));
85.         t.length = sizeof(uint8_t) * 8;
86.         t.rx_buffer = recv_buf;
87.         t.tx_buffer = NULL;
88.                 //下面一行代码报错 直接崩溃重启
89.         esp_err_t ret = spi_device_transmit(spi_h, &t);
90.         luat_log_log(1,LUAT_LOG_TAG,"SPI recv error check: %d\n",ret);
91.         if (ret == ESP_OK)
92.             return 0;
93.     }
94.     return -1;
95. }

GeSHi © Codebox Plus Extension

两个报错均是unhandle error，希望能帮忙看看，错在了哪里
我猜可能是我的spi_transaction_t结构体有问题，但是IDF示例里面没有看到有用过buffer，基本上用的都是data来发送数据
如果您想查看全部代码可以到仓库查看，这是仓库链接 https://gitee.com/dreamcmi/LuatOS-ESP32