#include <wiringPi.h>
#include <wiringPiSPI.h>
#include <stdint.h>

#include "LS7366R.h"


void ls7366rWriteCmd(uint8_t c) {
  uint8_t buf[1];
  buf[0] = c;
  wiringPiSPIDataRW(SPI_CHAN, buf, 1);
}

void ls7366rWriteCmdData(uint8_t c, uint8_t d) {
  uint8_t buf[2];
  buf[0] = c;
  buf[1] = d;
  wiringPiSPIDataRW(SPI_CHAN, buf, 2);
}

uint8_t ls7366rRead8(uint8_t c) {
  uint8_t buf[2];
  buf[0] = c;
  wiringPiSPIDataRW(SPI_CHAN, buf, 2);
  return buf[1];
}

uint32_t ls7366rRead32(uint8_t c) {
  uint8_t buf[5];
  buf[0] = c;
  wiringPiSPIDataRW(SPI_CHAN, buf, 5);
  uint32_t r = ((uint32_t)buf[1] << 24) | ((uint32_t)buf[2] << 16) | ((uint32_t)buf[3] << 8) | ((uint32_t)buf[4]);
  return r;
}


void ls7366rInit() {
  ls7366rWriteCmd(CMD_CLR | REG_STR);
  ls7366rWriteCmd(CMD_CLR | REG_CNTR);
  ls7366rWriteCmdData(CMD_WR | REG_MDR0, MDR0_ILO);
}