ctrlblock.cpp

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// Copyright (c) 2024 anabrid GmbH
// Contact: https://www.anabrid.com/licensing/
//
// SPDX-License-Identifier: MIT OR GPL-2.0-or-later
 
#include "teensy/ctrlblock.h"
#include <block/ctrlblock.h>
#include <chips/SR74HCT595.h>
 
FLASHMEM blocks::CTRLBlock *blocks::CTRLBlock::from_entity_classifier(entities::EntityClassifier classifier,
                                                                      bus::addr_t block_address) {
  if (!classifier or classifier.class_enum != CLASS_ or classifier.type != TYPE)
    return nullptr;
 
  // Currently, there are no variants.
  // TODO: After adapting classifier to (major, minor, patch) version,
  //       fail on v1.0.1, which has missing hardware components and should not be used.
  return new CTRLBlock(new CTRLBlockHAL_V_1_0_2(block_address));
}
 
const SPISettings blocks::CTRLBlockHAL_V_1_0_2::F_SYNC_SPI_SETTINGS{1'000'000, MSBFIRST, SPI_MODE0};
 
FLASHMEM blocks::CTRLBlockHAL_V_1_0_2::CTRLBlockHAL_V_1_0_2(bus::addr_t block_address)
    : CTRLBlockHAL_Parent(block_address),
      f_adc_mux(bus::address_from_tuple(1, 2), true),
      f_adc_mux_latch(bus::address_from_tuple(1, 3)),
      f_sync(bus::address_from_tuple(1, 4), F_SYNC_SPI_SETTINGS) {}
 
FLASHMEM bool blocks::CTRLBlockHAL_V_1_0_2::write_adc_bus_muxers(ADCBus adc_bus) {
  if (!f_adc_mux.transfer8(static_cast<uint8_t>(adc_bus)))
    return false;
  f_adc_mux_latch.trigger();
  return true;
}
 
// float blocks::CTRLBlockHAL_V_1_0_2::read_temperature() { return 0; }
 
FLASHMEM bool blocks::CTRLBlockHAL_V_1_0_2::write_sync_id(uint8_t id) {
  // The very naive encoding proposed in
  // https://lab.analogparadigm.com/lucidac/firmware/hybrid-controller/-/issues/2
  // uses only 6 bits of the 16 bits to ensure a "unique stream".
  // IDs is thus limited to 0-63 currently
  if (id > 0b00'111111)
    return false;
  f_sync.transfer16((id << 1) | 0b1000'0001);
  return true;
}