applications/spi_flash_test/main.cc

// Copyright 2023 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.

#include <bitset>
#include <cstdint>

#include <Arduino.h>
#include <SPI.h>

#include "pw_log/log.h"
#include "pw_result/result.h"
#include "pw_string/format.h"

#include "gonk/pin_config.h"
#include "gonk/spi_flash.h"

using gonk::pin_config::FlashCS;
using gonk::pin_config::PinConfig;
using gonk::pin_config::StatusLed;
using gonk::spi_flash::SpiFlash;

namespace {

PinConfig pin_config = PinConfig();
SpiFlash spi_flash =
    SpiFlash(FlashCS, /*baudrate=*/1000000, pin_config.flash_spi);

} // namespace

int main() {
  pin_config.Init();

  // Put FPGA in reset.
  pin_config.InitFpgaPins();
  pin_config.FpgaHalt();
  delay(10);

  pin_config.SPIEnable();
  spi_flash.StartFlashSpi();

  char buffer[32];
  uint16_t update_count = 0;

  while (true) {
    PW_LOG_INFO("Update Count: %d", update_count);

    pw::Result<SpiFlash::DeviceId> result = spi_flash.GetDeviceIds();
    if (result.ok()) {
      PW_LOG_INFO("SPI Flash JEDEC ID: %x %x %x",
                  result.value().manufacturer_id, result.value().family_code,
                  result.value().product_version);
    }

    delay(1000);

    update_count = (update_count + 1) % UINT16_MAX;

    // Toggle status LED each loop.
    if (update_count % 2 == 0) {
      digitalWrite(StatusLed, HIGH);
    } else {
      digitalWrite(StatusLed, LOW);
    }
  }

  return 0;
}