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@ -18,31 +18,30 @@
@@ -18,31 +18,30 @@
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#include <avr/interrupt.h> |
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#include <util/delay.h> |
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#include <string.h> |
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#include "gamepad.h" |
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#include "gamepads.h" |
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#include "n64.h" |
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#include "gcn64_protocol.h" |
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#define GCN64_REPORT_SIZE 15 |
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#undef BUTTON_A_RUMBLE_TEST |
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/*********** prototypes *************/ |
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static void n64Init(void); |
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static char n64Update(void); |
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static char n64Changed(int id); |
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static int n64BuildReport(unsigned char *reportBuffer, int id); |
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static void n64SetVibration(int value); |
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static char n64Changed(void); |
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static void n64GetReport(gamepad_data *dst); |
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static void n64SetVibration(char enable); |
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static char must_rumble = 0; |
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#ifdef BUTTON_A_RUMBLE_TEST |
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static char force_rumble = 0; |
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#endif |
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/* What was most recently read from the controller */ |
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static unsigned char last_built_report[GCN64_REPORT_SIZE]; |
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static gamepad_data last_built_report; |
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/* What was most recently sent to the host */ |
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static unsigned char last_sent_report[GCN64_REPORT_SIZE]; |
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/* What was most recently reported through getReport */ |
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static gamepad_data last_sent_report; |
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static void n64Init(void) |
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{ |
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@ -92,11 +91,9 @@ static char controlRumble(char enable)
@@ -92,11 +91,9 @@ static char controlRumble(char enable)
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static char n64Update(void) |
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{ |
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int i; |
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unsigned char count; |
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unsigned char x,y; |
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unsigned char btns1, btns2; |
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unsigned char rb1, rb2; |
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unsigned char caps[3]; |
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/* Pad answer to N64_GET_CAPABILITIES
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@ -224,84 +221,40 @@ static char n64Update(void)
@@ -224,84 +221,40 @@ static char n64Update(void)
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} |
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#endif |
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// Remap buttons as they always were by this
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// adapter. Might change in v3 when a N64
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// specific report descriptor will be used.
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//
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rb1 = rb2 = 0; |
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for (i=0; i<4; i++) // A B Z START
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rb1 |= (btns1 & (0x80 >> i)) ? (0x01<<i) : 0; |
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for (i=0; i<4; i++) // C-UP C-DOWN C-LEFT C-RIGHT
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rb1 |= btns2 & (0x08 >> i) ? (0x10<<i) : 0; |
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for (i=0; i<2; i++) // L R
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rb2 |= btns2 & (0x20 >> i) ? (0x01<<i) : 0; |
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for (i=0; i<4; i++) // Up down left right
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rb2 |= btns1 & (0x08 >> i) ? (0x04<<i) : 0; |
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// analog joystick
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last_built_report[0] = 1; // ID
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if (1) { |
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int16_t xval, yval; |
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xval = (char)x; |
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yval = (char)y; |
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if (xval>80) xval = 80; else if (xval<-80) xval = -80; |
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if (yval>80) yval = 80; else if (yval<-80) yval = -80; |
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// Scale -80 ... +80 to -16000 ... +16000
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xval *= 200; |
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yval *= 200; |
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yval = -yval; |
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xval += 16000; |
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yval += 16000; |
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last_built_report[1] = ((uint8_t*)&xval)[0]; |
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last_built_report[2] = ((uint8_t*)&xval)[1]; |
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last_built_report[3] = ((uint8_t*)&yval)[0]; |
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last_built_report[4] = ((uint8_t*)&yval)[1]; |
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} |
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#ifdef CLASSIC_MODE // Adapter V1/V2 which required calibration
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if (1) { |
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// Convert to unsigned
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x = (x ^ 0x80) - 1; |
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y = ((y ^ 0x80) ) ^ 0xFF; |
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// The following helps a cheap TTX controller
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// which uses the full 8 bit range instead
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// of +/- 80. The specific test here prevents
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// receiving a value of 128 (instead of -127).
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//
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// This will have no effect on "normal" controllers.
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if (x == 0xFF) |
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x = 0; |
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last_built_report[1] = 0; |
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last_built_report[2] = x; |
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last_built_report[3] = 0; |
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last_built_report[4] = y; |
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} |
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#endif |
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last_built_report[5] = 0x80; |
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last_built_report[6] = 0x3e; |
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last_built_report[7] = 0x80; |
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last_built_report[8] = 0x3e; |
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last_built_report[9] = 0x80; |
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last_built_report[10] = 0x3e; |
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last_built_report[11] = 0x80; |
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last_built_report[12] = 0x3e; |
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// buttons
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last_built_report[13] = rb1; |
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last_built_report[14] = rb2; |
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last_built_report.pad_type = PAD_TYPE_N64; |
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last_built_report.n64.buttons = (btns1 << 8) | btns2; |
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last_built_report.n64.x = x; |
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last_built_report.n64.y = y; |
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/* Copy all the data as-is for the raw field */ |
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last_built_report.n64.raw_data[0] = btns1; |
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last_built_report.n64.raw_data[1] = btns2; |
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last_built_report.n64.raw_data[2] = x; |
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last_built_report.n64.raw_data[3] = y; |
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/* Some cheap non-official controllers
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* use the full 8 bit range instead of the |
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* normal +-80 observed on official controllers. In |
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* particular, some units (but not all!) produced |
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* by TTX. The symptom is usually "The joystick |
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* left direction does not work". |
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* |
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* So I limit values to the -127 to +127 range, |
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* otherwise it causes problem later |
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* when the sign is inverted. Using 16 bit |
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* signed numbers instead of 8 bit would solve |
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* this, but this is only for cheap, not |
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* even worth using controllers so I don't |
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* care. |
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* |
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* The joystick will now "work" as bad as it would |
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* on a N64, or maybe a little better. This should |
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* help people realise they got what the paid for |
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* instead of suspecting the adapter. */ |
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if (last_built_report.n64.x == -128) |
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last_built_report.n64.x = -127; |
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if (last_built_report.n64.y == -128) |
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last_built_report.n64.y = -127; |
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return 0; |
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} |
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@ -338,32 +291,30 @@ static char n64Probe(void)
@@ -338,32 +291,30 @@ static char n64Probe(void)
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return 0; |
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} |
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static char n64Changed(int id) |
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static char n64Changed(void) |
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{ |
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return memcmp(last_built_report, last_sent_report, GCN64_REPORT_SIZE); |
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return memcmp(&last_built_report, &last_sent_report, sizeof(gamepad_data)); |
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} |
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static int n64BuildReport(unsigned char *reportBuffer, int id) |
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static void n64GetReport(gamepad_data *dst) |
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{ |
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if (reportBuffer) |
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memcpy(reportBuffer, last_built_report, GCN64_REPORT_SIZE); |
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if (dst) |
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memcpy(dst, &last_built_report, sizeof(gamepad_data)); |
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memcpy( last_sent_report, last_built_report, GCN64_REPORT_SIZE); |
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return GCN64_REPORT_SIZE; |
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memcpy(&last_sent_report, &last_built_report, sizeof(gamepad_data)); |
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} |
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static void n64SetVibration(int value) |
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static void n64SetVibration(char enable) |
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{ |
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must_rumble = value; |
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must_rumble = enable; |
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} |
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static Gamepad N64Gamepad = { |
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.init = n64Init, |
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.update = n64Update, |
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.changed = n64Changed, |
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.buildReport = n64BuildReport, |
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.getReport = n64GetReport, |
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.probe = n64Probe, |
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.num_reports = 1, |
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.setVibration = n64SetVibration, |
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}; |
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Raphael Assenat
7 years ago