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libs/libc: add lib_dumpvbuffer support

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e.g: Encapsulation Type: Bluetooth H4: add packet type dump support

From:

lib_dumpvbuffer(NULL, data, len);

[    1.567100] 0000  03 0c 00                                         ...
[    1.890100] 0000  0e 04 01 03 0c 00                                ......
[    1.890100] 0000  03 10 00                                         ...
[    1.892900] 0000  0e 0c 01 03 10 00 ff ff 8f fe db ff 5b 87        ............[.
[    1.892900] 0000  01 10 00                                         ...
[    1.894900] 0000  0e 0c 01 01 10 00 06 bb 22 06 0a 00 bb 22        ........"...."
[    1.894900] 0000  02 10 00                                         ...
[    1.901900] 0000  0e 44 01 02 10 00 ff ff ff 03 fe ff ff ff ff ff  .D..............
[    1.901900] 0010  ff ff f3 0f e8 fe 3f f7 83 ff 1c 00 00 00 61 f7  ......?.......a.
[    1.901900] 0020  ff ff 7f 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[    1.901900] 0030  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[    1.901900] 0040  00 00 00 00 00 00                                ......

To:

struct iovec bufs[2];

bufs[0].iov_base = &type;
bufs[0].iov_len = 1;
bufs[1].iov_base = data;
bufs[1].iov_len = len;

lib_dumpvbuffer(NULL, bufs, 2);

[    3.711400] 0000  01 03 0c 00                                      ....
[    4.035400] 0000  04 0e 04 01 03 0c 00                             .......
[    4.035400] 0000  01 03 10 00                                      ....
[    4.037400] 0000  04 0e 0c 01 03 10 00 ff ff 8f fe db ff 5b 87     .............[.
[    4.037400] 0000  01 01 10 00                                      ....
[    4.039400] 0000  04 0e 0c 01 01 10 00 06 bb 22 06 0a 00 bb 22     ........."...."
[    4.039400] 0000  01 02 10 00                                      ....
[    4.046400] 0000  04 0e 44 01 02 10 00 ff ff ff 03 fe ff ff ff ff  ..D.............
[    4.046400] 0010  ff ff ff f3 0f e8 fe 3f f7 83 ff 1c 00 00 00 61  .......?.......a
[    4.046400] 0020  f7 ff ff 7f 00 00 00 00 00 00 00 00 00 00 00 00  ................
[    4.046400] 0030  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[    4.046400] 0040  00 00 00 00 00 00 00                             .......

Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an
2020-12-22 17:59:19 +08:00
committed by Brennan Ashton
parent 826e74a13d
commit 2980792efd
4 changed files with 166 additions and 113 deletions
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include/debug.h
+6
View File
@@ -51,6 +51,7 @@
#endif
#include <syslog.h>
#include <sys/uio.h>
/****************************************************************************
* Pre-processor Definitions
@@ -1022,6 +1023,11 @@ extern "C"
void lib_dumpbuffer(FAR const char *msg, FAR const uint8_t *buffer,
unsigned int buflen);
/* Do a pretty buffer dump from multiple buffers. */
void lib_dumpvbuffer(FAR const char *msg, FAR const struct iovec *iov,
int iovcnt);
/* The system logging interfaces are normally accessed via the macros
* provided above. If the cross-compiler's C pre-processor supports a
* variable number of macro arguments, then those macros below will map all