abawo/pico-sdk
3
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

pico_stdio improvements (#598)

Browse Source 
* add stdio_usb_connected() method
* add PICO_STDIO_USB_CONNECT_WAIT_TIMEOUT_MS to allow waiting for CDC connection during init(* 
* add puts_raw and putchar_raw to skip any CR/LF translation
This commit is contained in:
Graham Sanderson
2021-10-08 09:01:30 -05:00
committed by GitHub
parent 12017a07ab
commit 13be546dc3
5 changed files with 84 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/rp2_common/pico_stdio_usb/stdio_usb.c
View File

@ -103,9 +103,29 @@ bool stdio_usb_init(void) {
bool rc = add_alarm_in_us(PICO_STDIO_USB_TASK_INTERVAL_US, timer_task, NULL, true);
if (rc) {
stdio_set_driver_enabled(&stdio_usb, true);
#if PICO_STDIO_USB_CONNECT_WAIT_TIMEOUT_MS
#if PICO_STDIO_USB_CONNECT_WAIT_TIMEOUT_MS > 0
absolute_time_t until = make_timeout_time_ms(PICO_STDIO_USB_CONNECT_WAIT_TIMEOUT_MS);
#else
absolute_time_t until = at_the_end_of_time;
#endif
do {
if (stdio_usb_connected()) {
#if PICO_STDIO_USB_POST_CONNECT_WAIT_DELAY_MS != 0
sleep_ms(PICO_STDIO_USB_POST_CONNECT_WAIT_DELAY_MS);
#endif
break;
}
sleep_ms(10);
} while (!time_reached(until));
#endif
}
return rc;
}
bool stdio_usb_connected(void) {
return tud_cdc_connected();
}
#else
#include "pico/stdio_usb.h"
#warning stdio USB was configured, but is being disabled as TinyUSB is explicitly linked