示例#1
0
文件: lm75.c 项目: Gasper/OpenSARM
/**
 * Returns raw data from sensor
 *
 * @param adr adress of sensor
 * @return Data from sensor
 */
signed int lm75_get_temp_raw(unsigned char adr)
{
	unsigned char a[2];
	i2c0_start(adr);
	i2c0_receive(a, 2);
	i2c0_stop();
	return ((a[0] << 8) | a[1]) >> 7;
}
示例#2
0
void enose_periodic(void)
{
  enose_PID_val = buf_PID.sum / buf_PID.av_nb_sample;

  if (enose_i2c_done) {
    if (enose_conf_requested) {
      const uint8_t msg[] = { ENOSE_PWM_ADDR, enose_heat[0], enose_heat[1], enose_heat[2] };
      memcpy((void *)i2c0_buf, msg, sizeof(msg));
      i2c0_transmit(ENOSE_SLAVE_ADDR, sizeof(msg), &enose_i2c_done);
      enose_i2c_done = FALSE;
      enose_conf_requested = FALSE;
    } else if (enose_status == ENOSE_IDLE) {
      enose_status = ENOSE_MEASURING_WR;
      const uint8_t msg[] = { ENOSE_DATA_ADDR };
      memcpy((void *)i2c0_buf, msg, sizeof(msg));
      i2c0_transmit(ENOSE_SLAVE_ADDR, sizeof(msg), &enose_i2c_done);
      enose_i2c_done = FALSE;
    } else if (enose_status == ENOSE_MEASURING_WR) {
      enose_status = ENOSE_MEASURING_RD;
      i2c0_receive(ENOSE_SLAVE_ADDR, 6, &enose_i2c_done);
      enose_i2c_done = FALSE;
    } else if (enose_status == ENOSE_MEASURING_RD) {
      uint16_t val = (i2c0_buf[0] << 8) | i2c0_buf[1];
      if (val < 5000) {
        enose_val[0] = val;
      }
      val = (i2c0_buf[2] << 8) | i2c0_buf[3];
      if (val < 5000) {
        enose_val[1] = val;
      }
      val = (i2c0_buf[4] << 8) | i2c0_buf[5];
      if (val < 5000) {
        enose_val[2] = val;
      }
      enose_status = ENOSE_IDLE;
    }
  }
  DOWNLINK_SEND_ENOSE_STATUS(DefaultChannel, DefaultDevice, &enose_val[0], &enose_val[1], &enose_val[2], &enose_PID_val,
                             3, enose_heat);
}