Add support for delays in send_string. (#8244)

docs/feature_macros.md

@@ -107,6 +107,16 @@ Would tap `KC_HOME` - note how the prefix is now `X_`, and not `KC_`. You can al
 
 Which would send "VE" followed by a `KC_HOME` tap, and "LO" (spelling "LOVE" if on a newline).
 
+Delays can be also added to the string:
+
+* `SS_DELAY(msecs)` will delay for the specified number of milliseconds.
+
+For example:
+
+    SEND_STRING("VE" SS_DELAY(1000) SS_TAP(X_HOME) "LO");
+
+Which would send "VE" followed by a 1-second delay, then a `KC_HOME` tap, and "LO" (spelling "LOVE" if on a newline, but delayed in the middle).
+
 There's also a couple of mod shortcuts you can use:
 
 * `SS_LCTL(string)`

quantum/quantum.c

@@ -14,6 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <ctype.h>
 #include "quantum.h"
 
 #ifdef PROTOCOL_LUFA
@@ -374,6 +375,8 @@ void send_string_with_delay(const char *str, uint8_t interval) {
     while (1) {
         char ascii_code = *str;
         if (!ascii_code) break;
+        if (ascii_code == SS_QMK_PREFIX) {
+            ascii_code = *(++str);
             if (ascii_code == SS_TAP_CODE) {
                 // tap
                 uint8_t keycode = *(++str);
@@ -387,6 +390,17 @@ void send_string_with_delay(const char *str, uint8_t interval) {
                 // up
                 uint8_t keycode = *(++str);
                 unregister_code(keycode);
+            } else if (ascii_code == SS_DELAY_CODE) {
+                // delay
+                int     ms      = 0;
+                uint8_t keycode = *(++str);
+                while (isdigit(keycode)) {
+                    ms *= 10;
+                    ms += keycode - '0';
+                    keycode = *(++str);
+                }
+                while (ms--) wait_ms(1);
+            }
         } else {
             send_char(ascii_code);
         }
@@ -403,6 +417,8 @@ void send_string_with_delay_P(const char *str, uint8_t interval) {
     while (1) {
         char ascii_code = pgm_read_byte(str);
         if (!ascii_code) break;
+        if (ascii_code == SS_QMK_PREFIX) {
+            ascii_code = pgm_read_byte(++str);
             if (ascii_code == SS_TAP_CODE) {
                 // tap
                 uint8_t keycode = pgm_read_byte(++str);
@@ -416,6 +432,17 @@ void send_string_with_delay_P(const char *str, uint8_t interval) {
                 // up
                 uint8_t keycode = pgm_read_byte(++str);
                 unregister_code(keycode);
+            } else if (ascii_code == SS_DELAY_CODE) {
+                // delay
+                int     ms      = 0;
+                uint8_t keycode = pgm_read_byte(++str);
+                while (isdigit(keycode)) {
+                    ms *= 10;
+                    ms += keycode - '0';
+                    keycode = pgm_read_byte(++str);
+                }
+                while (ms--) wait_ms(1);
+            }
         } else {
             send_char(ascii_code);
         }

quantum/send_string_keycodes.h

@@ -382,13 +382,17 @@
 #define ADD_SLASH_X(y) STRINGIZE(\x##y)
 #define SYMBOL_STR(x) ADD_SLASH_X(x)
 
+#define SS_QMK_PREFIX 1
+
 #define SS_TAP_CODE 1
 #define SS_DOWN_CODE 2
 #define SS_UP_CODE 3
+#define SS_DELAY_CODE 4
 
-#define SS_TAP(keycode) "\1" SYMBOL_STR(keycode)
+#define SS_TAP(keycode) "\1\1" SYMBOL_STR(keycode)
-#define SS_DOWN(keycode) "\2" SYMBOL_STR(keycode)
+#define SS_DOWN(keycode) "\1\2" SYMBOL_STR(keycode)
-#define SS_UP(keycode) "\3" SYMBOL_STR(keycode)
+#define SS_UP(keycode) "\1\3" SYMBOL_STR(keycode)
+#define SS_DELAY(msecs) "\1\4" STRINGIZE(msecs) "|"
 
 // `string` arguments must not be parenthesized
 #define SS_LCTL(string) SS_DOWN(X_LCTL) string SS_UP(X_LCTL)