/***************************************************************************
 *
 * Copyright 2015-2019 BES.
 * All rights reserved. All unpublished rights reserved.
 *
 * No part of this work may be used or reproduced in any form or by any
 * means, or stored in a database or retrieval system, without prior written
 * permission of BES.
 *
 * Use of this work is governed by a license granted by BES.
 * This work contains confidential and proprietary information of
 * BES. which is protected by copyright, trade secret,
 * trademark and other intellectual property rights.
 *
 ****************************************************************************/
//#include "mbed.h"
#include "hal_trace.h"
#include "hal_uart.h"
#include <assert.h>
#include <stdio.h>
#include <string.h>

#define APP_BLE_UART_BUFF_SIZE 50 // 16

enum HAL_UART_ID_T app_ble_uart_id = HAL_UART_ID_0;

extern "C" {
typedef void (*GATT_UART_HANDLER_T)(uint8_t *buf, uint32_t len);
extern void gatt_uart_register_write_request_cb(GATT_UART_HANDLER_T handler);
extern int gatt_uart_write(uint8_t *buffer, uint32_t length);
extern int gatt_loop_write(uint8_t *buffer, uint32_t length);
}

static uint32_t app_ble_debug_cnt = 0;

void app_ble_send_data(uint8_t *buffer, uint32_t length) {
  TRACE(1, "[%s]", __func__);
  gatt_uart_write(buffer, length);
  //    gatt_loop_write(buffer, length);
}

typedef struct {
  volatile bool rx_done;
  volatile bool tx_done;
  uint8_t rx_data[APP_BLE_UART_BUFF_SIZE];
  uint32_t rx_len;
} app_ble_uart_t;

app_ble_uart_t app_ble_uart;

static void uart_rx(uint32_t xfer_size, int dma_error,
                    union HAL_UART_IRQ_T status) {
  app_ble_debug_cnt = 4;
  if (dma_error) {
    //        TRACE(1,"uart_rx dma error: xfer_size=%d", xfer_size);
    app_ble_debug_cnt = 0xfe;
    app_ble_uart.rx_len = 0;
  } else if (status.BE || status.FE || status.OE || status.PE) {
    //        TRACE(2,"uart_rx uart error: xfer_size=%d, status=0x%08x",
    //        xfer_size, status.reg);
    app_ble_debug_cnt = 0xfd;
    app_ble_uart.rx_len = 0;
  } else {
    app_ble_debug_cnt = 0xfc;
    app_ble_uart.rx_len = xfer_size;
    //        hal_uart_dma_recv(app_ble_uart_id, app_ble_uart.rx_data,
    //        app_ble_uart.rx_len - 5, NULL, NULL);
    //        gatt_uart_write(app_ble_uart.rx_data, app_ble_uart.rx_len - 5);

    //        hal_uart_dma_recv(app_ble_uart_id, app_ble_uart.rx_data, 5, NULL,
    //        NULL); gatt_uart_write(app_ble_uart.rx_data, 5);

    hal_uart_dma_recv(app_ble_uart_id, app_ble_uart.rx_data,
                      sizeof(app_ble_uart.rx_data), NULL, NULL);
    //        //hal_uart_dma_send(app_ble_uart_id, app_ble_uart.rx_data,
    //        app_ble_uart.rx_len, NULL, NULL);
    gatt_uart_write(app_ble_uart.rx_data, app_ble_uart.rx_len);
  }

  app_ble_uart.rx_done = true;
}

static void uart_tx(uint32_t xfer_size, int dma_error) {
  if (dma_error) {
    //        TRACE(1,"uart_tx dma error: xfer_size=%d", xfer_size);
    app_ble_debug_cnt = 0xfb;
  }
  app_ble_uart.tx_done = true;
}

void app_ble_uart_write_request_cb(uint8_t *buf, uint32_t len) {
  // send data over uart.
  hal_uart_dma_send(app_ble_uart_id, buf, len, NULL, NULL);
  // DUMP8("%x ", buf, len);
}

uint32_t app_ble_uart_open() {
#if 1
  int ret;
  union HAL_UART_IRQ_T mask;

  struct HAL_UART_CFG_T uart_cfg;

  uart_cfg.parity = HAL_UART_PARITY_NONE, uart_cfg.stop = HAL_UART_STOP_BITS_1,
  uart_cfg.data = HAL_UART_DATA_BITS_8,
  uart_cfg.flow = HAL_UART_FLOW_CONTROL_NONE,
  uart_cfg.tx_level = HAL_UART_FIFO_LEVEL_1_2,
  uart_cfg.rx_level = HAL_UART_FIFO_LEVEL_1_4, uart_cfg.baud = 115200,
  uart_cfg.dma_rx = true, uart_cfg.dma_tx = true,
  uart_cfg.dma_rx_stop_on_err = false;

  app_ble_debug_cnt = 1;

  ret = hal_uart_open(app_ble_uart_id, &uart_cfg);
  if (ret) {
    app_ble_debug_cnt = 0xff;
    //        TRACE(0,"Failed to open uart");
    return 1;
  }

  app_ble_debug_cnt = 2;
  hal_uart_irq_set_dma_handler(app_ble_uart_id, uart_rx, uart_tx);
  //    hal_uart_dma_recv(app_ble_uart_id, app_ble_uart.rx_data,
  //    sizeof(app_ble_uart.rx_data), NULL, NULL);
  mask.reg = 0;
  mask.BE = 1;
  mask.FE = 1;
  mask.OE = 1;
  mask.PE = 1;
  mask.RT = 1;
  hal_uart_irq_set_mask(app_ble_uart_id, mask);
  app_ble_debug_cnt = 3;

  app_ble_uart.rx_done = false;
  app_ble_uart.tx_done = false;
#endif
  gatt_uart_register_write_request_cb(app_ble_uart_write_request_cb);
  return 0;
}