[bootlin/training-materials updates] master: nunchuk-mpd-client: be less strict on the expected joystick ABS_X/ABS_Y values (fa2529fa)

[Thomas Petazzoni]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/fa2529fa1a29c77cfc40edc1c5b1fe685d76d258

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commit fa2529fa1a29c77cfc40edc1c5b1fe685d76d258
Author: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
Date:   Fri Sep 30 16:44:51 2022 +0200

    nunchuk-mpd-client: be less strict on the expected joystick ABS_X/ABS_Y values
    
    With my Nunchuk, I never had a 0 or 255 value in ABS_X, the min I
    could get was 1, the max was 254. To accomodate for this, be a bit
    more flexible on the values that trigger a song next/prev. For
    consistency, we do the same for ABS_Y for volume up/down.
    
    Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>


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fa2529fa1a29c77cfc40edc1c5b1fe685d76d258
 lab-data/embedded-linux/appdev/nunchuk-mpd-client.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lab-data/embedded-linux/appdev/nunchuk-mpd-client.c b/lab-data/embedded-linux/appdev/nunchuk-mpd-client.c
index 3586eb3c..2bde034d 100644
--- a/lab-data/embedded-linux/appdev/nunchuk-mpd-client.c
+++ b/lab-data/embedded-linux/appdev/nunchuk-mpd-client.c
@@ -128,16 +128,16 @@ int main(int argc, char ** argv)
 		case EV_ABS:
 			switch (event.code) {
 			case ABS_Y:
-				if (event.value == 255) {
+				if (event.value > 250) {
 					printf("Volume up: ");
 					change_volume(conn, 5);
-				} else if (event.value == 0) {
+				} else if (event.value < 5) {
 					printf("Volume down: ");
 					change_volume(conn, -5);
 				}
 				break;
 			case ABS_X:
-				if (event.value == 255) {
+				if (event.value > 250) {
 					if (!mpd_run_next(conn)) {
 						printf("No next song. Aborting\n");
 						exit(handle_error(conn));
@@ -146,7 +146,7 @@ int main(int argc, char ** argv)
 						print_current_song(conn);
 					}
 				}
-				else if (event.value == 0) {
+				else if (event.value < 5) {
 					if (!mpd_run_previous(conn)) {
 						printf("No previous song. Aborting\n");
 						exit(handle_error(conn));