usb_cdc: Add support for usb_send_ep0_progmem()

Add support for explicitly sending to the ep0 pipe from constant "progmem" memory on the AVR. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2018-09-30 10:37:48 -04:00
parent 92aea93500
commit 731236cf20
4 changed files with 9 additions and 2 deletions
--- a/src/avr/pgm.h
+++ b/src/avr/pgm.h
@@ -5,6 +5,8 @@

 #include <avr/pgmspace.h>

+#define NEED_PROGMEM 1
+
 #define READP(VAR) ({                                                   \
    _Pragma("GCC diagnostic push");                                     \
    _Pragma("GCC diagnostic ignored \"-Wint-to-pointer-cast\"");        \