支持 CP210X的USB Host 库

Zoologist

来自 USB_Host_Shield_Library_2.0-CP210x

USB_Host_Shield_Library_2.0-CP210x.zip (399.03 KB, 下载次数: 2)

2021-11-20 20:09 上传

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我在 ESP32 上测试过其中的 Loopback 工作正常

1. #include <CP210x.h>
   
2. #include <usbhub.h>
   
3. 
   
4. #include "pgmstrings.h"
   
5. #include <SPI.h>
   
6. 
   
7. class CP210xAsync : public CP210xAsyncOper
   
8. {
   
9.   public:
   
10.     uint8_t OnInit(CP210x *pftdi);
    
11. };
    
12. 
    
13. uint8_t CP210xAsync::OnInit(CP210x *cp210x)
    
14. {
    
15.   uint8_t rcode = 0;
    
16.   rcode = cp210x->IFCEnable();
    
17. 
    
18.   if (rcode)
    
19.   {
    
20.     return rcode;
    
21.   }
    
22. 
    
23.   rcode = cp210x->SetBaudRate(115200);
    
24. 
    
25.   if (rcode)
    
26.   {
    
27.     return rcode;
    
28.   }
    
29. 
    
30.   rcode = cp210x->SetDataBits(8);
    
31.   if (rcode)
    
32.   {
    
33.     return rcode;
    
34.   }
    
35. 
    
36.   rcode = cp210x->SetStopBits(CP210X_STOP_BITS_1);
    
37.   if (rcode)
    
38.   {
    
39.     return rcode;
    
40.   }
    
41. 
    
42.   rcode = cp210x->SetParity(CP210X_PARITY_NONE);
    
43.   if (rcode)
    
44.   {
    
45.     return rcode;
    
46.   }
    
47. 
    
48.   rcode = cp210x->SetFlowControl(CP210X_FLOW_CONTROL_OFF);
    
49.   if (rcode)
    
50.   {
    
51.     return rcode;
    
52.   }
    
53. 
    
54. 
    
55.   return rcode;
    
56. }
    
57. 
    
58. USB Usb;
    
59. //USBHub Hub(&Usb);
    
60. CP210xAsync cp210xAsync;
    
61. CP210x cp210x(&Usb, &cp210xAsync);
    
62. 
    
63. void setup()
    
64. {
    
65.   Serial.begin( 115200 );
    
66. #if !defined(MIPSEL)
    
67.   while (!Serial); // Wait for serial port to connect - used on Leonardo, Teensy and other boards with built-in USB CDC serial connection
    
68. #endif
    
69.   Serial.println("Start");
    
70. 
    
71.   if (Usb.Init() == -1)
    
72.     Serial.println("OSC did not start.");
    
73. 
    
74.   delay( 200 );
    
75. }
    
76. 
    
77. void loop()
    
78. {
    
79.   Usb.Task();
    
80. 
    
81.   if ( Usb.getUsbTaskState() == USB_STATE_RUNNING )
    
82.   {
    
83.     uint8_t  rcode;
    
84.     char strbuf[] = "DEADBEEF";
    
85.     //char strbuf[] = "The quick brown fox jumps over the lazy dog";
    
86.     //char strbuf[] = "This string contains 61 character to demonstrate FTDI buffers"; //add one symbol to it to see some garbage
    
87.     //Serial.print(".");
    
88. 
    
89.     rcode = cp210x.SndData(strlen(strbuf), (uint8_t*)strbuf);
    
90. 
    
91.     if (rcode)
    
92.       ErrorMessage<uint8_t>(PSTR("SndData"), rcode);
    
93. 
    
94.     delay(50);
    
95. 
    
96.     uint8_t  buf[64];
    
97. 
    
98.     for (uint8_t i = 0; i < 64; i++)
    
99.       buf[i] = 0;
    
100. 
     
101.     uint16_t rcvd = 64;
     
102.     rcode = cp210x.RcvData(&rcvd, buf);
     
103. 
     
104.     if (rcode && rcode != hrNAK)
     
105.       ErrorMessage<uint8_t>(PSTR("Ret"), rcode);
     
106. 
     
107.     // The device reserves the first two bytes of data
     
108.     //   to contain the current values of the modem and line status registers.
     
109.     if (rcvd > 2)
     
110.       Serial.print((char*)(buf));
     
111. 
     
112.     delay(10);
     
113.   }
     
114. }

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Zoologist

使用的是为 FireBeetle设计的 USB Host 板，具体在下面可以看到

https://mc.dfrobot.com.cn/thread-309553-1-1.html