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-rw-r--r--main.c131
1 files changed, 113 insertions, 18 deletions
diff --git a/main.c b/main.c
index f86966d..6410b76 100644
--- a/main.c
+++ b/main.c
@@ -9,6 +9,11 @@
#include <signal.h>
#include <inttypes.h>
+/* Analog Binarization Threshold */
+#define ABT 64
+/* Analog Binarization Hysteresis */
+#define ABH 20
+
enum mapping_type {
MT_SINGLE = 0,
MT_DOUBLE = 1,
@@ -48,6 +53,14 @@ enum keys_mask {
KMASK_PS = 1 << 14,
KMASK_THUMBL = 1 << 15,
KMASK_THUMBR = 1 << 16,
+ KMASK_THUMBL_DOWN = 1 << 17,
+ KMASK_THUMBL_UP = 1 << 18,
+ KMASK_THUMBL_LEFT = 1 << 19,
+ KMASK_THUMBL_RIGHT = 1 << 20,
+ KMASK_THUMBR_DOWN = 1 << 21,
+ KMASK_THUMBR_UP = 1 << 22,
+ KMASK_THUMBR_LEFT = 1 << 23,
+ KMASK_THUMBR_RIGHT = 1 << 24,
KMASK_PRESSED = 1 << 29,
KMASK_SIDE_SHIFT = 30,
KMASK_CHORD_KEYS =
@@ -84,10 +97,10 @@ struct mapping g_mapping[MAPPINGS_NUM] = {
{ .first = SIDE_RIGHT, .keys = KMASK_NORTH | KMASK_UP, .code = KEY_W },
{ .first = SIDE_RIGHT, .keys = KMASK_NORTH | KMASK_DOWN, .code = KEY_E },
{ .first = SIDE_RIGHT, .keys = KMASK_NORTH | KMASK_RIGHT, .code = KEY_R },
- { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_LEFT, .code = KEY_GRAVE },
- { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_UP, .code = KEY_BACKSLASH },
- { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_DOWN, .code = KEY_SLASH },
- //{ .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_RIGHT, .code = KEY_ },
+ { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_LEFT, .code = KEY_T },
+ { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_UP, .code = KEY_Y },
+ { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_DOWN, .code = KEY_SEMICOLON },
+ { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_RIGHT, .code = KEY_APOSTROPHE },
/* Left single to right single */
{ .first = SIDE_LEFT, .keys = KMASK_LEFT | KMASK_WEST, .code = KEY_LEFTBRACE },
{ .first = SIDE_LEFT, .keys = KMASK_LEFT | KMASK_SOUTH, .code = KEY_COMMA },
@@ -118,10 +131,10 @@ struct mapping g_mapping[MAPPINGS_NUM] = {
{ .first = SIDE_RIGHT, .keys = KMASK_NORTH | KMASK_WEST | KMASK_UP, .code = KEY_F2 },
{ .first = SIDE_RIGHT, .keys = KMASK_NORTH | KMASK_WEST | KMASK_DOWN, .code = KEY_F3 },
{ .first = SIDE_RIGHT, .keys = KMASK_NORTH | KMASK_WEST | KMASK_RIGHT, .code = KEY_F4 },
- { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_NORTH | KMASK_LEFT, .code = KEY_LEFT },
- { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_NORTH | KMASK_UP, .code = KEY_UP },
- { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_NORTH | KMASK_DOWN, .code = KEY_DOWN },
- { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_NORTH | KMASK_RIGHT, .code = KEY_RIGHT },
+ { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_NORTH | KMASK_LEFT, .code = KEY_HOME },
+ { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_NORTH | KMASK_UP, .code = KEY_PAGEUP },
+ { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_NORTH | KMASK_DOWN, .code = KEY_PAGEDOWN },
+ { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_NORTH | KMASK_RIGHT, .code = KEY_END },
/* Left double to right single */
{ .first = SIDE_LEFT, .keys = KMASK_LEFT | KMASK_DOWN | KMASK_WEST, .code = KEY_5 },
{ .first = SIDE_LEFT, .keys = KMASK_LEFT | KMASK_DOWN | KMASK_SOUTH, .code = KEY_6 },
@@ -135,15 +148,15 @@ struct mapping g_mapping[MAPPINGS_NUM] = {
{ .first = SIDE_LEFT, .keys = KMASK_DOWN | KMASK_RIGHT | KMASK_SOUTH, .code = KEY_0 },
{ .first = SIDE_LEFT, .keys = KMASK_DOWN | KMASK_RIGHT | KMASK_NORTH, .code = KEY_MINUS },
{ .first = SIDE_LEFT, .keys = KMASK_DOWN | KMASK_RIGHT | KMASK_EAST, .code = KEY_EQUAL },
- { .first = SIDE_LEFT, .keys = KMASK_RIGHT | KMASK_UP | KMASK_WEST, .code = KEY_HOME },
- { .first = SIDE_LEFT, .keys = KMASK_RIGHT | KMASK_UP | KMASK_SOUTH, .code = KEY_PAGEDOWN },
- { .first = SIDE_LEFT, .keys = KMASK_RIGHT | KMASK_UP | KMASK_NORTH, .code = KEY_PAGEUP },
- { .first = SIDE_LEFT, .keys = KMASK_RIGHT | KMASK_UP | KMASK_EAST, .code = KEY_END },
- /* Left double to right double */
- { .first = SIDE_LEFT, .keys = KMASK_RIGHT | KMASK_UP | KMASK_WEST | KMASK_SOUTH, .code = KEY_INSERT },
- { .first = SIDE_LEFT, .keys = KMASK_RIGHT | KMASK_UP | KMASK_SOUTH | KMASK_EAST, .code = KEY_PAUSE },
- { .first = SIDE_LEFT, .keys = KMASK_RIGHT | KMASK_UP | KMASK_NORTH | KMASK_WEST, .code = KEY_SCROLLLOCK },
- { .first = SIDE_LEFT, .keys = KMASK_RIGHT | KMASK_UP | KMASK_EAST | KMASK_NORTH, .code = KEY_SYSRQ },
+ { .first = SIDE_LEFT, .keys = KMASK_RIGHT | KMASK_UP | KMASK_WEST, .code = KEY_GRAVE },
+ { .first = SIDE_LEFT, .keys = KMASK_RIGHT | KMASK_UP | KMASK_SOUTH, .code = KEY_BACKSLASH },
+ { .first = SIDE_LEFT, .keys = KMASK_RIGHT | KMASK_UP | KMASK_NORTH, .code = KEY_SLASH },
+ // { .first = SIDE_LEFT, .keys = KMASK_RIGHT | KMASK_UP | KMASK_EAST, .code = KEY_ },
+ /* Right double to left double */
+ { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_NORTH | KMASK_LEFT | KMASK_DOWN, .code = KEY_INSERT },
+ { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_NORTH | KMASK_UP | KMASK_LEFT, .code = KEY_SCROLLLOCK },
+ { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_NORTH | KMASK_DOWN | KMASK_RIGHT, .code = KEY_PAUSE },
+ { .first = SIDE_RIGHT, .keys = KMASK_EAST | KMASK_NORTH | KMASK_RIGHT | KMASK_UP, .code = KEY_SYSRQ },
};
bool should_stop = false;
@@ -182,7 +195,7 @@ static void emit(int fd, int type, int code, int val)
.type = type,
.code = code,
.value = val,
- /* timestamp values below are ignored */
+ // TODO timestamp?
.time = {
.tv_sec = 0,
.tv_usec = 0,
@@ -287,6 +300,9 @@ static struct state keypress(struct state state, struct input_event ev, int ofd)
case BTN_START:
state.keys |= KMASK_OPTIONS;
break;
+ case BTN_MODE:
+ state.keys |= KMASK_PS;
+ break;
};
} else if (ev.type == EV_ABS) {
/*
@@ -310,6 +326,34 @@ static struct state keypress(struct state state, struct input_event ev, int ofd)
state.keys |= KMASK_DOWN;
state.keys |= KMASK_PRESSED;
}
+ } else if (ev.code == ABS_X) {
+ if (ev.value == -1) {
+ emulate_key_press(ofd, KEY_LEFT);
+ state.keys |= KMASK_THUMBL_LEFT;
+ } else if (ev.value == 1) {
+ emulate_key_press(ofd, KEY_RIGHT);
+ state.keys |= KMASK_THUMBL_RIGHT;
+ }
+ } else if (ev.code == ABS_Y) {
+ if (ev.value == -1) {
+ emulate_key_press(ofd, KEY_UP);
+ state.keys |= KMASK_THUMBL_UP;
+ } else if (ev.value == 1) {
+ emulate_key_press(ofd, KEY_DOWN);
+ state.keys |= KMASK_THUMBL_DOWN;
+ }
+ } else if (ev.code == ABS_RX) {
+ if (ev.value == -1) {
+ state.keys |= KMASK_THUMBR_LEFT;
+ } else if (ev.value == 1) {
+ state.keys |= KMASK_THUMBR_RIGHT;
+ }
+ } else if (ev.code == ABS_RY) {
+ if (ev.value == -1) {
+ state.keys |= KMASK_THUMBR_UP;
+ } else if (ev.value == 1) {
+ state.keys |= KMASK_THUMBR_DOWN;
+ }
}
}
return state;
@@ -379,10 +423,28 @@ static struct state keyrelease(struct state state, struct input_event ev, int of
*/
if (ev.code == ABS_HAT0X) {
state.keys &= ~(KMASK_LEFT | KMASK_RIGHT);
+ /* D-pad takes part in chords too */
state.keys &= ~KMASK_PRESSED;
} else if (ev.code == ABS_HAT0Y) {
state.keys &= ~(KMASK_UP | KMASK_DOWN);
+ /* D-pad takes part in chords too */
state.keys &= ~KMASK_PRESSED;
+ } else if (ev.code == ABS_X) {
+ if (state.keys & KMASK_THUMBL_LEFT)
+ emulate_key_release(ofd, KEY_LEFT);
+ else if (state.keys & KMASK_THUMBL_RIGHT)
+ emulate_key_release(ofd, KEY_RIGHT);
+ state.keys &= ~(KMASK_THUMBL_LEFT | KMASK_THUMBL_RIGHT);
+ } else if (ev.code == ABS_Y) {
+ if (state.keys & KMASK_THUMBL_UP)
+ emulate_key_release(ofd, KEY_UP);
+ else if (state.keys & KMASK_THUMBL_DOWN)
+ emulate_key_release(ofd, KEY_DOWN);
+ state.keys &= ~(KMASK_THUMBL_UP | KMASK_THUMBL_DOWN);
+ } else if (ev.code == ABS_RX) {
+ state.keys &= ~(KMASK_THUMBR_LEFT | KMASK_THUMBR_RIGHT);
+ } else if (ev.code == ABS_RY) {
+ state.keys &= ~(KMASK_THUMBR_UP | KMASK_THUMBR_DOWN);
}
}
if ((state.keys & ~(3 << KMASK_SIDE_SHIFT)) == 0) state.keys &= ~(3 << KMASK_SIDE_SHIFT);
@@ -422,6 +484,7 @@ int main(int argc, char *argv[])
sleep(1);
struct state state = {0};
+ int8_t abs_previous[ABS_CNT] = {0};
while (!should_stop) {
struct input_event ev;
@@ -450,6 +513,38 @@ int main(int argc, char *argv[])
} else if (ev.value == 0) {
state = keyrelease(state, ev, ofd);
}
+ } else if (ev.code == ABS_X || ev.code == ABS_Y || ev.code == ABS_RX || ev.code == ABS_RY) {
+ /*
+ * Center stick position is about 127 or 128 on any axis.
+ * Gonna convert these values to be consistent with d-pad
+ * "analog" values.
+ */
+ if ((ev.value - INT8_MAX) > (ABT + ABH)) {
+ ev.value = 1;
+ } else if ((ev.value - INT8_MAX) < -(ABT + ABH)) {
+ ev.value = -1;
+ } else if (((ev.value - INT8_MAX) > -(ABT - ABH)) &&
+ ((ev.value - INT8_MAX) < (ABT - ABH))) {
+ ev.value = 0;
+ } else {
+ break;
+ }
+ /* Some filtering with abs_previous to mitigate duplicate events */
+ if (abs_previous[ev.code] != ev.value) {
+ if (ev.value == 1 || ev.value == -1) {
+ if (abs_previous[ev.code] != 0) {
+ const int8_t value = ev.value;
+ ev.value = 0;
+ state = keyrelease(state, ev, ofd);
+ ev.value = value;
+ }
+ state = keypress(state, ev, ofd);
+ abs_previous[ev.code] = ev.value;
+ } else if (ev.value == 0) {
+ state = keyrelease(state, ev, ofd);
+ abs_previous[ev.code] = ev.value;
+ }
+ }
}
break;
default:
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-18 21:35:48 +0000