| 639 | } |
| 640 | |
| 641 | bool SPIBusManager::promoteToMultiSPI(SPIBusInfo& bus) FL_NOEXCEPT { |
| 642 | SPIBusType max_type = getMaxSupportedSPIType(); |
| 643 | |
| 644 | // Determine which multi-SPI type to use |
| 645 | if (bus.num_devices == 2 && static_cast<u8>(max_type) >= static_cast<u8>(SPIBusType::DUAL_SPI)) { |
| 646 | bus.bus_type = SPIBusType::DUAL_SPI; |
| 647 | |
| 648 | // Get available Dual-SPI controllers and find one we can use (runtime detection) |
| 649 | const auto& controllers = SpiHw2::getAll(); |
| 650 | if (controllers.empty()) { |
| 651 | bus.error_message = "No Dual-SPI controllers available on this platform"; |
| 652 | return false; |
| 653 | } |
| 654 | |
| 655 | // Try each controller until we find one that works |
| 656 | fl::shared_ptr<SpiHw2> dual_ctrl; |
| 657 | for (const auto& ctrl : controllers) { |
| 658 | if (!ctrl->isInitialized()) { |
| 659 | dual_ctrl = ctrl; |
| 660 | break; |
| 661 | } |
| 662 | } |
| 663 | |
| 664 | if (!dual_ctrl) { |
| 665 | bus.error_message = "All Dual-SPI controllers already in use"; |
| 666 | return false; |
| 667 | } |
| 668 | |
| 669 | // Configure Dual-SPI |
| 670 | SpiHw2::Config config; |
| 671 | config.bus_num = static_cast<u8>(dual_ctrl->getBusId()); |
| 672 | config.clock_speed_hz = selectBusSpeed(bus); // Use slowest requested speed |
| 673 | config.clock_pin = bus.clock_pin; |
| 674 | config.data0_pin = bus.devices[0].data_pin; |
| 675 | config.data1_pin = (bus.num_devices > 1) ? bus.devices[1].data_pin : -1; |
| 676 | |
| 677 | // Initialize the controller |
| 678 | if (!dual_ctrl->begin(config)) { |
| 679 | bus.error_message = "Failed to initialize Dual-SPI controller"; |
| 680 | return false; |
| 681 | } |
| 682 | |
| 683 | FL_DBG("SPI: Initialized Dual-SPI controller '" << dual_ctrl->getName() |
| 684 | << "' (bus " << config.bus_num << ") at " << config.clock_speed_hz << " Hz"); |
| 685 | |
| 686 | // Store controller pointer and SPI bus number |
| 687 | bus.hw_controller = dual_ctrl; |
| 688 | bus.spi_bus_num = config.bus_num; |
| 689 | |
| 690 | // Initialize lane buffers |
| 691 | bus.lane_buffers.resize(bus.num_devices); |
| 692 | |
| 693 | bus.is_initialized = true; |
| 694 | return true; |
| 695 | |
| 696 | } else if (bus.num_devices >= 3 && bus.num_devices <= 4 && |
| 697 | static_cast<u8>(max_type) >= static_cast<u8>(SPIBusType::QUAD_SPI)) { |
| 698 | bus.bus_type = SPIBusType::QUAD_SPI; |