thermocouple/firmware/masterchip/usb.c

#include "main.h"

usbMsgLen_t usbFunctionSetup(uchar data[8]) {
  usbRequest_t    *rq = (void *)data;
  static uchar    dataBuffer[4];

  if(rq->bRequest == 1) {
    dataBuffer[0] = (thermoData [0] & 0xff00)>>8;
    dataBuffer[1] = thermoData [0] & 0x00ff;
    dataBuffer[2] = (thermoData [1] & 0xff00)>>8;
    dataBuffer[3] = thermoData [1] & 0x00ff;
    usbMsgPtr = dataBuffer;
    return 4;
  } else if(rq->bRequest == 2) {
    dataBuffer[0] = (thermoData [2] & 0xff00)>>8;
    dataBuffer[1] = thermoData [2] & 0x00ff;
    dataBuffer[2] = (thermoData [3] & 0xff00)>>8;
    dataBuffer[3] = thermoData [3] & 0x00ff;
    usbMsgPtr = dataBuffer;
    return 4;
  } else {
    uint8_t opcode = (rq->bRequest & 0xff00)>>8;
    uint8_t addr = (rq->wValue & 0xff00)>>8;
    uint8_t valH = rq->wIndex & 0x00ff;
    uint8_t valL = (rq->wIndex & 0xff00)>>8;

    uint8_t send[] = {opcode, addr, valH, valL};
    uint8_t recv[2];
    spi_mst_write(4, data);
    spi_mst_read(2, data)
      
    dataBuffer[0] = recv[0];
    dataBuffer[1] = recv[1];
    dataBuffer[2] = 0x0000;
    dataBuffer[3] = 0x0000;
    usbMsgPtr = dataBuffer;
    return 4;
    
  }

  return 0;
}