File content as of revision 12:7eb41621ba22:

/*******************************************************************************
* Copyright (C) Maxim Integrated Products, Inc., All Rights Reserved.
*
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*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* OTHER DEALINGS IN THE SOFTWARE.
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* Products, Inc. Branding Policy.
*
* The mere transfer of this software does not imply any licenses
* of trade secrets, proprietary technology, copyrights, patents,
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*******************************************************************************/

#include "DS9400.hpp"

#define TRY MaximInterfaceCore_TRY
#define TRY_VALUE MaximInterfaceCore_TRY_VALUE

namespace MaximInterfaceDevices {

using namespace Core;

Result<void> DS9400::waitAwake() {
  uint_least8_t data;
  do {
    TRY_VALUE(data, uart->readByte());
  } while (data != 0xA5);
  return none;
}

Result<void> DS9400::start() { return uart->writeByte('S'); }

Result<void> DS9400::start(uint_least8_t address) {
  TRY(start());
  TRY(writeByte(address));
  return none;
}

Result<void> DS9400::stop() { return uart->writeByte('P'); }

Result<void> DS9400::writeByte(uint_least8_t data) {
  const uint_least8_t packet[] = {'Q', data};
  TRY(uart->clearReadBuffer());
  TRY(uart->writeBlock(packet));
  TRY_VALUE(data, uart->readByte());
  return (data == 0) ? makeResult(none) : I2CMaster::NackError;
}

Result<uint_least8_t> DS9400::readByte(DoAck doAck) {
  TRY(uart->clearReadBuffer());
  TRY(uart->writeByte(doAck == Ack ? 'R' : 'N'));
  return uart->readByte();
}

Result<void> DS9400::configure(uint_least8_t config) {
  const uint_least8_t packet[] = {'C', config};
  return uart->writeBlock(packet);
}

} // namespace MaximInterfaceDevices