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Fixed bits in the initial Xbox One protocol ack

Sam Lantinga 2020-11-18 20:34:10 -08:00
parent cd51a51f00
commit 963d8b3f40
1 changed files with 7 additions and 0 deletions
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7
src/joystick/hidapi/SDL_hidapi_xboxone.c
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@ -36,6 +36,7 @@
/* Define this if you want to log all packets from the controller */
/*#define DEBUG_XBOX_PROTOCOL*/
#define DEBUG_XBOX_PROTOCOL
/* The amount of time to wait after hotplug to send controller init sequence */
#define CONTROLLER_INIT_DELAY_MS 1500 /* 475 for Xbox One S, 1275 for the PDP Battlefield 1 */
@ -186,6 +187,12 @@ SendAckIfNeeded(SDL_HIDAPI_Device *device, Uint8 *data, int size)
{
if ((data[1] & 0x30) == 0x30) {
Uint8 ack_packet[] = { 0x01, 0x20, data[2], 0x09, 0x00, data[0], 0x20, data[3], 0x00, 0x00, 0x00, 0x00, 0x00 };
/* The initial ack needs 0x80 added to the response, for some reason */
if (data[0] == 0x04 && data[1] == 0xF0) {
ack_packet[11] = 0x80;
}
#ifdef DEBUG_XBOX_PROTOCOL
HIDAPI_DumpPacket("Xbox One sending ACK packet: size = %d", ack_packet, sizeof(ack_packet));
#endif