diff options
| author | Damien George <damien.p.george@gmail.com> | 2016-12-28 17:32:18 +1100 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2016-12-28 17:32:18 +1100 |
| commit | e81116d07d3fed43f77f81bd5e20800d9d798f5f (patch) | |
| tree | b99143d0328c67324ee67113ce204fb7945b5a1b | |
| parent | 16a584d7cf7a46248ca308bdabb21a073d33ce80 (diff) | |
stmhal/uart: Increase inter-character timeout by 1ms.
Sys-tick resolution is 1ms and a value of 2 will give a delay between 1ms
and 2ms (whereas a value of 1 gives a delay between 0ms and 1ms, which is
too short).
| -rw-r--r-- | stmhal/uart.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/stmhal/uart.c b/stmhal/uart.c index 6582bda00..abe413bbf 100644 --- a/stmhal/uart.c +++ b/stmhal/uart.c @@ -623,8 +623,9 @@ STATIC mp_obj_t pyb_uart_init_helper(pyb_uart_obj_t *self, mp_uint_t n_args, con // set timeout_char // make sure it is at least as long as a whole character (13 bits to be safe) + // minimum value is 2ms because sys-tick has a resolution of only 1ms self->timeout_char = args.timeout_char.u_int; - uint32_t min_timeout_char = 13000 / init->BaudRate + 1; + uint32_t min_timeout_char = 13000 / init->BaudRate + 2; if (self->timeout_char < min_timeout_char) { self->timeout_char = min_timeout_char; } |