lucidac.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 <lucidac/lucidac.h>
#include <utils/mac.h>
 
#include "teensy/lucidac.h"
#include <block/teensy/icmd.h>
#include <chips/SR74HCT595.h>
#include <chips/TMP127Q1.h>
 
FLASHMEM platform::LUCIDAC::LUCIDAC() : LUCIDAC(new Teensy_LUCIDAC_HAL()) {}
 
const SPISettings platform::Teensy_LUCIDAC_HAL::F_ADC_SWITCHER_PRG_SPI_SETTINGS{
    4'000'000, MSBFIRST, SPI_MODE2 /* chip expects SPI MODE0, but CLK is inverted on the way */};
 
FLASHMEM platform::Teensy_LUCIDAC_HAL::Teensy_LUCIDAC_HAL()
    : f_acl_prg(bus::address_from_tuple(CARRIER_MADDR, ACL_PRG_FADDR), true),
      f_acl_upd(bus::address_from_tuple(CARRIER_MADDR, ACL_UPD_FADDR)),
      f_acl_clr(bus::address_from_tuple(CARRIER_MADDR, ACL_CRL_FADDR)),
      f_adc_switcher_prg(bus::address_from_tuple(CARRIER_MADDR, ADC_PRG_FADDR),
                         F_ADC_SWITCHER_PRG_SPI_SETTINGS),
      f_adc_switcher_sync(bus::address_from_tuple(CARRIER_MADDR, ADC_STROBE_FADDR)),
      f_adc_switcher_sr_reset(bus::address_from_tuple(CARRIER_MADDR, ADC_RESET_SR_FADDR)),
      f_adc_switcher_matrix_reset(bus::address_from_tuple(CARRIER_MADDR, ADC_RESET_8816_FADDR)),
      f_temperature(bus::address_from_tuple(CARRIER_MADDR, TEMPERATURE_FADDR)) {}
 
FLASHMEM bool platform::Teensy_LUCIDAC_HAL::write_acl(std::array<Teensy_LUCIDAC_HAL::ACL, 8> acl) {
  uint8_t sr = 0;
  for (size_t idx = 0; idx < acl.size(); idx++) {
    if (acl[idx] == ACL::EXTERNAL_) {
      sr |= 1 << idx;
    }
  }
  if (!f_acl_prg.transfer8(sr))
    return false;
  f_acl_upd.trigger();
  return true;
}
 
FLASHMEM void platform::Teensy_LUCIDAC_HAL::reset_acl() {
  f_acl_clr.trigger();
  f_acl_upd.trigger();
}
 
FLASHMEM bool platform::Teensy_LUCIDAC_HAL::write_adc_bus_mux(std::array<int8_t, 8> channels) {
  // Reset previous connections
  // It's easier to do a full reset then to remember all previous connections
  reset_adc_bus_mux();
  delayNanoseconds(420);
 
  // Write data to chip
  for (uint8_t output_idx = 0; output_idx < channels.size(); output_idx++) {
    if (channels[output_idx] >= 0) {
      auto cmd = decltype(f_adc_switcher_prg)::chip_cmd_word(channels[output_idx], output_idx);
      if (!f_adc_switcher_prg.transfer8(cmd))
        return false;
      f_adc_switcher_sync.trigger();
    }
  }
  return true;
}
 
FLASHMEM void platform::Teensy_LUCIDAC_HAL::reset_adc_bus_mux() { f_adc_switcher_matrix_reset.trigger(); }