/*
 *
 *  mur.sat
 *
 *  Somewhen in the year 2012, mur.at will have a nano satellite launched
 *  into a low earth orbit (310 km above the surface of our planet). The
 *  satellite itself is a TubeSat personal satellite kit, developed and
 *  launched by interorbital systems. mur.sat is a joint venture of mur.at,
 *  ESC im Labor and realraum.
 *
 *  Please visit the project hompage at sat.mur.at for further information.
 *
 *
 *  Copyright (C) 2012 Bernhard Tittelbach <xro@realraum.at>
 *
 *  This file is part of mur.sat.
 *
 *  mur.sat is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  any later version.
 *
 *  mur.sat is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with mur.sat. If not, see <http://www.gnu.org/licenses/>.
 *
 */
#include <avr/io.h>
#include <util/delay.h>
//#include <avr/stdio.h>

#include "led.h"
#include "util.h"
#include "hhd70.h"
#include "c1101lib.h"


#define CPU_PRESCALE(n)	do { CLKPR = 0x80; CLKPR = (n); } while(0)
char read_buffer[64]; // buffer for reading usb signals
char write_buffer[64]; // buffer for writing usb signals

//TODOs:
//* make adc work ?
// * remove code duplications
// * speed up and simplify code
// * make as much use of sleep modes as possible
// * use adc noise canceler (i.e. automatic sampling during cpu sleep)
// * read atmega temp
// * safely save state in eeprom (2 memory regions, only use the one with the "written successfully bit" which is written last)
// * what if c1101 resets spuriously and clears it's settings ? -> check peridically ?


/* ######          ######
             LUFA Library
     Copyright (C) Dean Camera, 2012.

  dean [at] fourwalledcubicle [dot] com
           www.lufa-lib.org
*/
//#include <LUFA/Drivers/Peripheral/SPI.h>
//#include <LUFA/Drivers/Misc/RingBuffer.h>
#include <LUFA/Drivers/USB/USB.h>
#include "lufa-descriptor-usbserial.h"

   /* Global I/O Buffers: */
//static RingBuffer_t SPItoUSB_Buffer;
//static uint8_t      SPItoUSB_Buffer_Data[8];

/** LUFA CDC Class driver interface configuration and state information. This structure is
 *  passed to all CDC Class driver functions, so that multiple instances of the same class
 *  within a device can be differentiated from one another.
 */
USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
  {
    .Config =
      {
        .ControlInterfaceNumber         = 0,

        .DataINEndpointNumber           = CDC_TX_EPNUM,
        .DataINEndpointSize             = CDC_TXRX_EPSIZE,
        .DataINEndpointDoubleBank       = false,

        .DataOUTEndpointNumber          = CDC_RX_EPNUM,
        .DataOUTEndpointSize            = CDC_TXRX_EPSIZE,
        .DataOUTEndpointDoubleBank      = false,

        .NotificationEndpointNumber     = CDC_NOTIFICATION_EPNUM,
        .NotificationEndpointSize       = CDC_NOTIFICATION_EPSIZE,
        .NotificationEndpointDoubleBank = false,
      },
  };

void EVENT_USB_Device_ConfigurationChanged(void)
{
  CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
}

void EVENT_USB_Device_ControlRequest(void)
{
  CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
}
/* ###### end LUFA CDC-ACM specific definitions ###### */



int main(void)
{
    CPU_PRESCALE(0);
    led_init();
    hhd70_init();
    USB_Init();
    DDRB &= ~(1<<DDB5);     // set PB5/ADC12 to INPUT (c1101 temp sensor)

    CDC_Device_SendString(&VirtualSerial_CDC_Interface,"hhd70dongle ready");

    _delay_ms(500);
    c1101_init();
    hhd70_palna_rxmode();
    for(;;)
    {
        CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
        USB_USBTask();     
        
        c1101_spi_strobe_command(SPIC1101_ADDR_SRX); // enter RX - Mode
        _delay_ms(1000);
        /*
        usb_rawhid_recv(read_buffer,20);
        if (read_buffer[0] == 'r')
            reset();
        */
        if (hhd70_rx_data_available() == 1)
        {
            led_on();
            CDC_Device_SendString(&VirtualSerial_CDC_Interface,"RX: GDO2 pin HIGH");
            CDC_Device_SendString(&VirtualSerial_CDC_Interface,"c1101 rx bytes:");
            debug_sprint_int16hex(write_buffer, c1101_spi_read_register(SPIC1101_ADDR_RXBYTES));
            CDC_Device_SendString(&VirtualSerial_CDC_Interface,write_buffer);
            c1101_recieveData();
            led_off();
        }

        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"c1101 rssi:");
        debug_sprint_int16hex(write_buffer, c1101_spi_read_register(SPIC1101_ADDR_RSSI));
        CDC_Device_SendString(&VirtualSerial_CDC_Interface,write_buffer);
        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"c1101 tx bytes:");
        debug_sprint_int16hex(write_buffer, c1101_spi_read_register(SPIC1101_ADDR_TXBYTES));
        CDC_Device_SendString(&VirtualSerial_CDC_Interface,write_buffer);
        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"c1101 rx bytes:");
        debug_sprint_int16hex(write_buffer, c1101_spi_read_register(SPIC1101_ADDR_RXBYTES));
        CDC_Device_SendString(&VirtualSerial_CDC_Interface,write_buffer);
        c1101_spi_dump_registers_to_usb();
        write_buffer[0]='T';
        write_buffer[1]='e';
        write_buffer[2]='m';
        write_buffer[3]='p';
        write_buffer[4]='s';
        write_buffer[5]=':';
        adc_on();
        _delay_ms(250);
        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"temp c1101:");
        debug_sprint_int16hex(write_buffer+6, c1101_measureTemp());
        CDC_Device_SendString(&VirtualSerial_CDC_Interface,write_buffer+6);
        _delay_ms(250);
        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"temp atmega:");
        debug_sprint_int16hex(write_buffer+10, adc_read(ADCMUX_ADC12));
        CDC_Device_SendString(&VirtualSerial_CDC_Interface,write_buffer+10);
        adc_off();
        _delay_ms(250);
        led_on();
        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"TX Data: String");
        c1101_transmitData("OE6EOF test mur.sat GFSK r:9k6 fdev:3mhz 1234567890123456789012345678901234567890 End of Test",93);
        led_off();
        _delay_ms(100);
        led_on();
        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"TX Data: Temps");
        c1101_transmitData((char*) write_buffer,14);
        led_off();
    }
}