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/* GECKO3COM

 *

 * Copyright (C) 2008 by

 *   ___    ____  _   _

 *  (  _`\ (  __)( ) ( )

 *  | (_) )| (_  | |_| |   Bern University of Applied Sciences

 *  |  _ <'|  _) |  _  |   School of Engineering and

 *  | (_) )| |   | | | |   Information Technology

 *  (____/'(_)   (_) (_)

 *

 *

 * This program 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

 * (at your option) any later version.

 *

 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

 */

/*********************************************************************/

/** \file     gecko3com_common.c

 *********************************************************************

 * \brief     common defines and prototypes for GECKO3COM

 *

 * \author    GNUradio, Christoph Zimmermann bfh.ch

 * \date

 *

*/

#include "gecko3com_common.h"

#include "delay.h"

volatile uint8_t flLOCAL;

volatile uint8_t flLED;

void

init_gecko3com (void)

{

  CPUCS = bmCLKSPD1;    /* CPU runs @ 48 MHz */

  CKCON = 0;             /* MOVX takes 2 cycles */

  /* configure IO ports. */

#ifdef PORT_A

  PORT_A = bmPORT_A_INITIAL;    /* Port A initial state */

  PORT_A_OE = bmPORT_A_OUTPUTS; /* Port A direction register */

#endif

#ifdef PORT_B

  PORT_B = bmPORT_B_INITIAL;    /* Port B initial state */

  PORT_B_OE = bmPORT_B_OUTPUTS; /* Port B direction register */

#endif

#ifdef PORT_C

  PORT_C = bmPORT_C_INITIAL;    /* Port C initial state */

  PORT_C_OE = bmPORT_C_OUTPUTS; /* Port C direction register */

#endif

#ifdef PORT_E

  PORT_E = bmPORT_E_INITIAL;    /* Port E initial state */

  PORT_E_OE = bmPORT_E_OUTPUTS; /* Port E direction register */

#endif

#ifdef PORT_CTL

  PORT_CTL = bmPORT_CTL_INITIAL;    /* Port GPIF CTL outputs initial state */

  PORT_CTL_OE = bmPORT_CTL_OUTPUTS; /* Port GPIF CTL outputs direction register */

#endif

  /* ------------------------------------------------------------------------ */

  /* Initialize USB interface. Configures endpoints, resets FIFOs and sets

   * packet size according to the connection (USB 1.1 or 2.0)

   */

  REVCTL = bmDYN_OUT | bmENH_PKT;         /* highly recommended by docs */

  SYNCDELAY;

  /* configure end points */

  /* EP1OUTCFG = bmVALID | bmBULK;                              SYNCDELAY; */

  EP1OUTCFG = 0;                                         SYNCDELAY;

  /* EP1INCFG  = bmVALID | bmBULK | bmIN;                       SYNCDELAY; */

  EP1INCFG  = 0;                                         SYNCDELAY;

  EP2CFG    = bmVALID | bmBULK | bmQUADBUF;             SYNCDELAY;      /* 512 quad bulk OUT */

  EP4CFG    = 0;                                 SYNCDELAY;      /* disabled */

  EP6CFG    = bmVALID | bmBULK | bmQUADBUF | bmIN;      SYNCDELAY;      /* 512 quad bulk IN */

  EP8CFG    = 0;                                 SYNCDELAY;      /* disabled */

  /* reset FIFOs */

  FIFORESET = bmNAKALL;                                 SYNCDELAY;

  FIFORESET = 2;                                        SYNCDELAY;

  /* FIFORESET = 4;                                     SYNCDELAY; */

  FIFORESET = 6;                                        SYNCDELAY;

  /* FIFORESET = 8;                                     SYNCDELAY; */

  FIFORESET = 0;                                 SYNCDELAY;

  /* configure end point FIFOs */

  /* let core see 0 to 1 transistion of autoout bit */

  EP2FIFOCFG = bmWORDWIDE;                      SYNCDELAY;

  EP6FIFOCFG = bmWORDWIDE;                      SYNCDELAY;

  /* prime the pump */

  EP0BCH = 0;                    SYNCDELAY;

  EP0BCL = 0;                    SYNCDELAY;

  OUTPKTEND = bmSKIP | 2;       SYNCDELAY; /* because we use quad buffering we have to flush all for buffers before use */

  OUTPKTEND = bmSKIP | 2;       SYNCDELAY;

  OUTPKTEND = bmSKIP | 2;       SYNCDELAY;

  OUTPKTEND = bmSKIP | 2;       SYNCDELAY;

  /* set autoout length for EP2 and autoin length for EP6 */

  if(USBCS & bmHSM){

    EP6AUTOINLENH = (512) >> 8;    SYNCDELAY;  /* this is the length for high speed */

    EP6AUTOINLENL = (512) & 0xff;  SYNCDELAY;

  }

  else {

    EP6AUTOINLENH = 0;     SYNCDELAY;  /* this is the length for full speed */

    EP6AUTOINLENL = 64;   SYNCDELAY;

  }

}

void

gecko3com_system_reset(void)

{

  /* resets are normaly active low, so we first set RESET to 0 */

  RESET &= ~bmRESET;

  /* enable reset output */

  RESET_OE |= bmRESET;

  mdelay(1);

  /* disable reset output */

  RESET |= bmRESET;

  RESET_OE &= ~bmRESET;

}

void

set_led_0 (const uint8_t on)

{

  if (!on)                      /* active low */

    LED_PORT |= bmPC_LED0;

  else

    LED_PORT &= ~bmPC_LED0;

}

void

set_led_1 (const uint8_t on)

{

  if (!on)                      /* active low */

    LED_PORT |= bmPC_LED1;

  else

    LED_PORT &= ~bmPC_LED1;

}

void

toggle_led_0 (void)

{

  LED_PORT ^= bmPC_LED0;

}

void

toggle_led_1 (void)

{

  LED_PORT ^= bmPC_LED1;

}

void

set_sleep_bits (uint8_t bits, uint8_t  mask)

{

  /* NOP on GECKO3COM */

}

void

init_io_ext (void)

{

  xdata uint8_t cmd[2];

  cmd[0] = 0x03;                 /* write to configuration register */

  cmd[1] = 0x01;                        /* set Bit 0 (LSB) as input and Bit 1,2 as output, others be irrelevant */

  i2c_write(I2C_DEV_IO, cmd, 2);

}

void

set_led_ext (const uint8_t color)

{

  xdata uint8_t cmd[2];

  cmd[0] = 0x01;                 /* write to output port register */

  cmd[1] = color;                       /* set LED */

  i2c_write(I2C_DEV_IO, cmd, 2);

  flLED = ~LEDS_OFF;

}

uint8_t

get_switch (void)

{

  xdata uint8_t cmd[1];

  cmd[0] = 0x00;                 /* set command byte to input port register */

  i2c_write(I2C_DEV_IO, cmd, 1);

  i2c_read(I2C_DEV_IO, cmd, 1);

  if((cmd[0] & 0x01) == 1){              /* only bit 0 in the input register is used */

    return 1;

  }

  return 0;

}