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e38eb2c8 AP |
1 | This file summarizes information on basic testing of USB functions |
2 | provided by gadgets. | |
3 | ||
4 | 1. ACM function | |
5 | ||
6 | ||
7 | 1. ACM function | |
8 | =============== | |
9 | ||
10 | The function is provided by usb_f_acm.ko module. | |
11 | ||
12 | Function-specific configfs interface | |
13 | ------------------------------------ | |
14 | ||
15 | The function name to use when creating the function directory is "acm". | |
16 | The ACM function provides just one attribute in its function directory: | |
17 | ||
18 | port_num | |
19 | ||
20 | The attribute is read-only. | |
21 | ||
22 | There can be at most 4 ACM/generic serial/OBEX ports in the system. | |
23 | ||
24 | ||
25 | Testing the ACM function | |
26 | ------------------------ | |
27 | ||
28 | On the host: cat > /dev/ttyACM<X> | |
29 | On the device : cat /dev/ttyGS<Y> | |
30 | ||
31 | then the other way round | |
32 | ||
33 | On the device: cat > /dev/ttyGS<Y> | |
34 | On the host: cat /dev/ttyACM<X> |