mirror of
https://github.com/raphnet/gc_n64_usb-v3
synced 2024-12-21 23:08:53 -05:00
77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
#include <stdint.h>
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#include "gamepads.h"
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#include "usbpad.h"
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#define REPORT_ID 1
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#define REPORT_SIZE 15
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void usbpad_init(void)
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{
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}
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int usbpad_getReportSize(void)
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{
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return REPORT_SIZE;
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}
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static void buildReportFromGC(const gc_pad_data *gc_data, unsigned char dstbuf[REPORT_SIZE])
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{
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}
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static void buildReportFromN64(const n64_pad_data *n64_data, unsigned char dstbuf[REPORT_SIZE])
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{
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int16_t xval, yval;
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xval = n64_data->x;
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yval = n64_data->y;
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/* Force official range */
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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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/* Unsign for HID report */
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xval += 16000;
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yval += 16000;
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dstbuf[0] = REPORT_ID;
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dstbuf[1] = ((uint8_t*)&xval)[0];
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dstbuf[2] = ((uint8_t*)&xval)[1];
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dstbuf[3] = ((uint8_t*)&yval)[0];
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dstbuf[4] = ((uint8_t*)&yval)[1];
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/* Inactive and centered axis */
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dstbuf[5] = 0x80;
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dstbuf[6] = 0x3e;
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dstbuf[7] = 0x80;
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dstbuf[8] = 0x3e;
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dstbuf[9] = 0x80;
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dstbuf[10] = 0x3e;
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dstbuf[11] = 0x80;
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dstbuf[12] = 0x3e;
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/* TODO : Button mapping */
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dstbuf[13] = n64_data->raw_data[0];
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dstbuf[14] = n64_data->raw_data[1];
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}
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void usbpad_buildReport(const gamepad_data *pad_data, unsigned char dstbuf[REPORT_SIZE])
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{
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switch (pad_data->pad_type)
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{
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case PAD_TYPE_N64:
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buildReportFromN64(&pad_data->n64, dstbuf);
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break;
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case PAD_TYPE_GAMECUBE:
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buildReportFromGC(&pad_data->gc, dstbuf);
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break;
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}
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}
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