Commit graph

10 commits

Author SHA1 Message Date
Angus Gratton
539262b5c2 vfs: Remove fd_offset member
This was intended for integrating LWIP, but a different approach was used.
2017-10-16 09:45:50 +08:00
Ivan Grokhotkov
13ef3938a6 vfs_uart: fix write operation blocked by a read
vfs_uart used same locks for read and write operations on a single UART.
If read operation was blocking (i.e. carried out via UART driver), the
lock was held by reading task until it received a line. During this time,
other tasks trying to write to the same UART would get blocked.

This change introduces separate read/write locks, and adds a test.

Another vfs_uart test if fixed (it was disabled since the
CONFIG_NEWLIB_STDOUT_ADDCR option was removed).
2017-08-29 08:27:36 +08:00
Ivan Grokhotkov
1e4587a09f vfs: implement fcntl via VFS interface 2017-08-21 15:58:28 +08:00
Ivan Grokhotkov
489c523870 vfs: support for blocking reads, more newline conversion options
Previously VFS driver for UART could only use simple non-blocking
functions to read from and write to the UART. UART driver provides more
complex blocking and interrupt-driven functions, which can be used
instead.
This commit adds optional support for using UART driver's functions.

Also added is a more flexible mechanism for configuring newline
conversion rules on input and output.

This commit also fixes a bug that all UARTs shared one static variable
used as a character buffer in newline conversion code. This variable is
changed to be per-UART.
2017-08-21 15:58:28 +08:00
Deomid Ryabkov
b8782bdd90 Change esp_vfs_t.write return value to ssize_t
write() should return ssize_t, not size_t.
2017-06-09 21:24:00 +01:00
Ivan Grokhotkov
0d00a1ba01 vfs: implement reading from UART 2017-01-16 11:33:32 +08:00
Ivan Grokhotkov
0e90983c9f vfs: fix adding CR 2016-10-28 16:16:12 +08:00
Ivan Grokhotkov
da56e76255 vfs: add readme file 2016-10-27 17:22:47 +08:00
Ivan Grokhotkov
7e201c5527 vfs and newlib: small fixes
- spaces->tabs in tasks.c
- update vfs_uart.c to use per-UART locks
- add license to vfs_uart.c
- allocate separate streams for stdout, stdin, stderr, so that they can be independently reassigned
- fix build system test failure
- use posix off_t instead of newlib internal _off_t
2016-10-27 17:22:18 +08:00
Ivan Grokhotkov
587360363c vfs: add UART device
This should be integrated with UART driver once everything is merged
2016-10-27 17:18:43 +08:00