diff options
| author | Damien George <damien.p.george@gmail.com> | 2014-08-21 22:48:23 +0100 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2014-09-07 20:40:32 +0100 |
| commit | a2f55fe12bac3e33d0c97f834b7f0a0382e969f5 (patch) | |
| tree | d6ef93a71ed61fab30b33a0e378883ffd5a2aa66 /stmhal/uart.c | |
| parent | 6c9c7bc75a48e71b31dfce4ec55cbd0d308771fd (diff) | |
| download | micropython-a2f55fe12bac3e33d0c97f834b7f0a0382e969f5.tar.gz micropython-a2f55fe12bac3e33d0c97f834b7f0a0382e969f5.zip | |
stmhal: Add polling ability to UART object.
Diffstat (limited to 'stmhal/uart.c')
| -rw-r--r-- | stmhal/uart.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/stmhal/uart.c b/stmhal/uart.c index 1cf718c5c0..6cb8a8e40d 100644 --- a/stmhal/uart.c +++ b/stmhal/uart.c @@ -26,6 +26,7 @@ #include <stdio.h> #include <string.h> +#include <stdarg.h> #include "stm32f4xx_hal.h" @@ -37,6 +38,7 @@ #include "runtime.h" #include "bufhelper.h" #include "uart.h" +#include "pybioctl.h" /// \moduleref pyb /// \class UART - duplex serial communication bus @@ -475,10 +477,41 @@ STATIC const mp_map_elem_t pyb_uart_locals_dict_table[] = { STATIC MP_DEFINE_CONST_DICT(pyb_uart_locals_dict, pyb_uart_locals_dict_table); +mp_uint_t uart_ioctl(mp_obj_t self_in, mp_uint_t request, int *errcode, ...) { + pyb_uart_obj_t *self = self_in; + va_list vargs; + va_start(vargs, errcode); + mp_uint_t ret; + if (request == MP_IOCTL_POLL) { + mp_uint_t flags = va_arg(vargs, mp_uint_t); + ret = 0; + if (flags & MP_IOCTL_POLL_RD && uart_rx_any(self)) { + ret |= MP_IOCTL_POLL_RD; + } + if (flags & MP_IOCTL_POLL_WR) { + // TODO can we always write? + ret |= MP_IOCTL_POLL_WR; + } + } else { + *errcode = 1; // EPERM, operation not permitted + ret = -1; + } + va_end(vargs); + return ret; +} + +STATIC const mp_stream_p_t uart_stream_p = { + //.read = uart_read, // TODO + //.write = uart_write, // TODO + .ioctl = uart_ioctl, + .is_text = false, +}; + const mp_obj_type_t pyb_uart_type = { { &mp_type_type }, .name = MP_QSTR_UART, .print = pyb_uart_print, .make_new = pyb_uart_make_new, + .stream_p = &uart_stream_p, .locals_dict = (mp_obj_t)&pyb_uart_locals_dict, }; |