int Run()

in src/de10nano/de10nano_driver.cc [116:136]

• 16 lines of code
• 4 McCabe index (conditional complexity)

  int Run(vta_phy_addr_t insn_phy_addr,
          uint32_t insn_count,
          uint32_t wait_cycles) {
    VTAWriteMappedReg(vta_host_handle_, 0x04, 0);
    VTAWriteMappedReg(vta_host_handle_, 0x08, insn_count);
    VTAWriteMappedReg(vta_host_handle_, 0x0c, insn_phy_addr);

    // VTA start
    VTAWriteMappedReg(vta_host_handle_, 0x0, VTA_START);

    // Loop until the VTA is done
    unsigned t, flag = 0;
    for (t = 0; t < wait_cycles; ++t) {
      flag = VTAReadMappedReg(vta_host_handle_, 0x00);
      flag &= 0x2;
      if (flag == 0x2) break;
      std::this_thread::yield();
    }
    // Report error if timeout
    return t < wait_cycles ? 0 : 1;
  }