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bdk: usb: hid: improve stick calibration

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Wait a bit before calibrating stick centers, in order to avoid bad values.
This commit is contained in:
CTCaer 2023-12-25 02:37:40 +02:00
parent 2e1a773a08
commit 239c48c790
1 changed files with 26 additions and 17 deletions
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43
bdk/usb/usb_gadget_hid.c
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@ -56,16 +56,19 @@ typedef struct _gamepad_report_t
typedef struct _jc_cal_t typedef struct _jc_cal_t
{ {
bool cl_done; // 15ms * JC_CAL_MAX_STEPS = 240 ms.
bool cr_done; #define JC_CAL_MAX_STEPS 16
u16 clx_max; u32 cl_step;
u16 clx_min; u32 cr_step;
u16 cly_max;
u16 cly_min; u16 clx_max;
u16 crx_max; u16 clx_min;
u16 crx_min; u16 cly_max;
u16 cry_max; u16 cly_min;
u16 cry_min; u16 crx_max;
u16 crx_min;
u16 cry_max;
u16 cry_min;
} jc_cal_t; } jc_cal_t;
static jc_cal_t jc_cal_ctx; static jc_cal_t jc_cal_ctx;
@ -74,34 +77,40 @@ static usb_ops_t usb_ops;
static bool _jc_calibration(jc_gamepad_rpt_t *jc_pad) static bool _jc_calibration(jc_gamepad_rpt_t *jc_pad)
{ {
// Calibrate left stick. // Calibrate left stick.
if (!jc_cal_ctx.cl_done) if (jc_cal_ctx.cl_step != JC_CAL_MAX_STEPS)
{ {
if (jc_pad->conn_l if (jc_pad->conn_l
&& jc_pad->lstick_x > 0x400 && jc_pad->lstick_y > 0x400 && jc_pad->lstick_x > 0x400 && jc_pad->lstick_y > 0x400
&& jc_pad->lstick_x < 0xC00 && jc_pad->lstick_y < 0xC00) && jc_pad->lstick_x < 0xC00 && jc_pad->lstick_y < 0xC00)
{ {
jc_cal_ctx.cl_step++;
jc_cal_ctx.clx_max = jc_pad->lstick_x + 0x72; jc_cal_ctx.clx_max = jc_pad->lstick_x + 0x72;
jc_cal_ctx.clx_min = jc_pad->lstick_x - 0x72; jc_cal_ctx.clx_min = jc_pad->lstick_x - 0x72;
jc_cal_ctx.cly_max = jc_pad->lstick_y + 0x72; jc_cal_ctx.cly_max = jc_pad->lstick_y + 0x72;
jc_cal_ctx.cly_min = jc_pad->lstick_y - 0x72; jc_cal_ctx.cly_min = jc_pad->lstick_y - 0x72;
jc_cal_ctx.cl_done = true;
if (jc_cal_ctx.cl_step != JC_CAL_MAX_STEPS)
return false;
} }
else else
return false; return false;
} }
// Calibrate right stick. // Calibrate right stick.
if (!jc_cal_ctx.cr_done) if (jc_cal_ctx.cr_step != JC_CAL_MAX_STEPS)
{ {
if (jc_pad->conn_r if (jc_pad->conn_r
&& jc_pad->rstick_x > 0x400 && jc_pad->rstick_y > 0x400 && jc_pad->rstick_x > 0x400 && jc_pad->rstick_y > 0x400
&& jc_pad->rstick_x < 0xC00 && jc_pad->rstick_y < 0xC00) && jc_pad->rstick_x < 0xC00 && jc_pad->rstick_y < 0xC00)
{ {
jc_cal_ctx.cr_step++;
jc_cal_ctx.crx_max = jc_pad->rstick_x + 0x72; jc_cal_ctx.crx_max = jc_pad->rstick_x + 0x72;
jc_cal_ctx.crx_min = jc_pad->rstick_x - 0x72; jc_cal_ctx.crx_min = jc_pad->rstick_x - 0x72;
jc_cal_ctx.cry_max = jc_pad->rstick_y + 0x72; jc_cal_ctx.cry_max = jc_pad->rstick_y + 0x72;
jc_cal_ctx.cry_min = jc_pad->rstick_y - 0x72; jc_cal_ctx.cry_min = jc_pad->rstick_y - 0x72;
jc_cal_ctx.cr_done = true;
if (jc_cal_ctx.cr_step != JC_CAL_MAX_STEPS)
return false;
} }
else else
return false; return false;
@ -122,7 +131,7 @@ static bool _jc_poll(gamepad_report_t *rpt)
if (jc_pad->l3 && jc_pad->home) if (jc_pad->l3 && jc_pad->home)
return true; return true;
if (!jc_cal_ctx.cl_done || !jc_cal_ctx.cr_done) if (jc_cal_ctx.cl_step != JC_CAL_MAX_STEPS || jc_cal_ctx.cr_step != JC_CAL_MAX_STEPS)
{ {
if (!_jc_calibration(jc_pad)) if (!_jc_calibration(jc_pad))
return false; return false;
@ -130,9 +139,9 @@ static bool _jc_poll(gamepad_report_t *rpt)
// Re-calibrate on disconnection. // Re-calibrate on disconnection.
if (!jc_pad->conn_l) if (!jc_pad->conn_l)
jc_cal_ctx.cl_done = false; jc_cal_ctx.cl_step = 0;
if (!jc_pad->conn_r) if (!jc_pad->conn_r)
jc_cal_ctx.cr_done = false; jc_cal_ctx.cr_step = 0;
// Calculate left analog stick. // Calculate left analog stick.
if (jc_pad->lstick_x <= jc_cal_ctx.clx_max && jc_pad->lstick_x >= jc_cal_ctx.clx_min) if (jc_pad->lstick_x <= jc_cal_ctx.clx_max && jc_pad->lstick_x >= jc_cal_ctx.clx_min)