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/***************************************************************************
* configs/16z/src/z16f_lowinit.c
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Based upon sample code included with the Zilog ZDS-II toolchain.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
***************************************************************************/
/***************************************************************************
* Included Files
***************************************************************************/
#include <nuttx/config.h>
#include "chip/chip.h"
/***************************************************************************
* Definitions
***************************************************************************/
/***************************************************************************
* Private Functions
***************************************************************************/
/***************************************************************************
* Name: z16f_extcsinit
***************************************************************************/
static void z16f_extcsinit(void)
{
/* CS0 enabled, Data [0:7]
* Post Read: No wait states; Chip select: 1 wait state
*/
putreg16(0x9001, Z16F_EXTCS0H);
/* CS1 enabled, Data [0:7]
* Post Read: No wait states; Chip select: 1 wait state
*/
putreg16(0x9001, Z16F_EXTCS1);
/* CS2 enabled, Data [0:7]
* Post Read: 1 wait state; Chip select: 1 wait state
*/
putreg16(0x9011, Z16F_EXTCS2);
/* CS3 enabled, Data [0:7]
* Post Read: 1 wait state; Chip select: 5 wait states
*/
putreg16(0x9015, Z16F_EXTCS3);
/* CS4 enabled, Data [0:7]
* Post Read: 1 wait state; Chip select: 5 wait states
*/
putreg16(0x9015, Z16F_EXTCS4);
/* CS5 enabled, Data [0:7]
* Post Read: 1 wait state; Chip select: 5 wait states
*/
putreg16(0x9015, Z16F_EXTCS5);
/* Enable the 8-bit external bus interface */
putreg8(0x40, Z16F_EXTCT);
}
/***************************************************************************
* Name: z16f_gpioinit
***************************************************************************/
static void z16f_gpioinit(void)
{
/* NOTE: Here we assume that all ports are in the default reset state */
/* --------------------------- ------ --------------------------------------------
* GPIO SIGNAL On-Board Connections
* --------------------------- ------ --------------------------------------------
* PA0/T0IN/T0OUT/DMA0REQ GP8 PS/2 / GPIO, Expansion slots
* PA1/T0OUT/DMA0ACK GP9 PS/2 / GPIO, Expansion slots
* PA2/DE0/FAULTY ~INTI Power section, RF transceiver (1)
* PA3/CTS0/FAULT0 ~INTX Expansion slots
* PA4/RXD0/CS1 RXD MAX3232D RS-232
* PA5/TXD0/CS2 TXD MAX3232D RS-232
* PA6/SCL/CS3 SCL RTC / UID, Expansion slots
* PA7/SDA/CS4 SDA RTC / UID, Expansion slots
* --------------------------- ------ --------------------------------------------
*/
putreg8(0x9f, Z16F_GPIOA_DD); /* Inputs: GP8, GP9, ~INTI, ~INTX, RXD, and SDA */
putreg8(0x03, Z16F_GPIOA_HDE); /* High drive current: GP8 and GP9 */
putreg8(0xf0, Z16F_GPIOA_AFL); /* RXD=Alt 1, TXD=Alt 1, SCL=Alt 1, SDA=Alt 1 */
/* --------------------------- ------ --------------------------------------------
* GPIO SIGNAL On-Board Connections
* --------------------------- ------ --------------------------------------------
* PB0/ANA0/T0IN0 GP0 Expansion slots
* PB1/ANA1/T0IN1 GP1 Expansion slots
* PB2/ANA2/T0IN2 GP2 Expansion slots
* PB3/ANA3/OPOUT GP3 Expansion slots
* PB4/ANA4 GP4 Expansion slots
* PB5/ANA5 GP5 Expansion slots
* PB6/ANA6/OPINP/CINN GP6 Expansion slots
* PB7/ANA7/OPINN GP7 Expansion slots
* --------------------------- ------ --------------------------------------------
*/
putreg8(0xff, Z16F_GPIOB_DD); /* Inputs: all */
putreg8(0xff, Z16F_GPIOB_HDE); /* High drive current: all */
/* --------------------------- ------ --------------------------------------------
* GPIO SIGNAL On-Board Connections
* --------------------------- ------ --------------------------------------------
* PC0/T1IN/T1OUT/DMA1REQ/CINN GP10 PS/2 / GPIO, Expansion slots
* PC1/T1OUT/DMA1ACK/COMPOUT GP11 PS/2 / GPIO, Expansion slots
* PC2/SS/CS4 ~EXP Expansion slots
* PC3/SCK/DMA2REQ SCK FT800Q, Serial memory (1), RF Transceiver (1),
* Expansion slots, SD0, 1, and 2
* PC4/MOSI/DMA2ACK MOSI FT800Q, Serial memory (1), RF Transceiver (1),
* Expansion slots, SD0, 1, and 2
* PC5/MISO/CS5 MISO FT800Q, Serial memory (1), RF Transceiver (1),
* Expansion slots, SD0, 1, and 2
* PC6/T2IN/T2OUT/PWMH0 ~CTS MAX3232D RS-232
* PC7/T2OUT/PWML0 ~RTS MAX3232D RS-232, Power section (?)
* --------------------------- ------ --------------------------------------------
*/
putreg8(0x63, Z16F_GPIOC_DD); /* Inputs: GP10, GP11, MISO, and ~CTS */
putreg8(0x03, Z16F_GPIOC_HDE); /* High drive current: GP10 and GP11 */
putreg8(0x38, Z16F_GPIOC_AFL); /* SCK=Alt 1, MOSI=Alt 1, MISO=Alt 1 */
putreg8(0x04, Z16F_GPIOC_OUT); /* ~EXP output high */
/* --------------------------- ------ --------------------------------------------
* GPIO SIGNAL On-Board Connections
* --------------------------- ------ --------------------------------------------
* PD0/PWMH1/ADR20 A20 RAM, Expansion slots
* PD1/PWML1/ADR21 A21 RAM, Expansion slots
* PD2/PWMH2/ADR22 A22 RAM, Expansion slots
* PD3/DE1/ADR16 A16 RAM, Expansion slots
* PD4/RXD1/ADR18 A18 RAM, Expansion slots
* PD5/TXD1/ADR19 A19 RAM, Expansion slots
* PD6/CTS1/ADR17 A17 RAM, Expansion slots
* PD7/PWML2/ADR23 A23 Expansion slots
* --------------------------- ------ --------------------------------------------
*/
putreg8(0x00, Z16F_GPIOD_DD); /* Inputs: None */
putreg8(0xff, Z16F_GPIOD_AFH); /* All=Alt 2
/* --------------------------- ------ --------------------------------------------
* GPIO SIGNAL On-Board Connections
* --------------------------- ------ --------------------------------------------
* PE0/DATA0 D0 RAM, Expansion slots
* PE1/DATA1 D1 RAM, Expansion slots
* PE2/DATA2 D2 RAM, Expansion slots
* PE3/DATA3 D3 RAM, Expansion slots
* PE4/DATA4 D4 RAM, Expansion slots
* PE5/DATA5 D5 RAM, Expansion slots
* PE6/DATA6 D6 RAM, Expansion slots
* PE7/DATA7 D7 RAM, Expansion slots
* --------------------------- ------ --------------------------------------------
*/
putreg8(0xff, Z16F_GPIOE_DD); /* Inputs: all */
/* --------------------------- ------ --------------------------------------------
* GPIO SIGNAL On-Board Connections
* --------------------------- ------ --------------------------------------------
* PF0/ADR0 A0 Expansion slots
* PF1/ADR1 A1 RAM, Expansion slots
* PF2/ADR2 A2 RAM, Expansion slots
* PF3/ADR3 A3 RAM, Expansion slots
* PF4/ADR4 A4 RAM, Expansion slots
* PF5/ADR5 A5 RAM, Expansion slots
* PF6/ADR6 A6 RAM, Expansion slots
* PF7/ADR7 A7 RAM, Expansion slots
* --------------------------- ------ --------------------------------------------
*/
putreg8(0x00, Z16F_GPIOF_DD); /* Inputs: None */
putreg8(0xff, Z16F_GPIOF_AFL); /* All=Alt 1 */
/* --------------------------- ------ --------------------------------------------
* GPIO SIGNAL On-Board Connections
* --------------------------- ------ --------------------------------------------
* PG0/ADR0 A8 RAM, Expansion slots
* PG1/ADR0 A9 RAM, Expansion slots
* PG2/ADR0 A10 RAM, Expansion slots
* PG3/ADR0 A11 RAM, Expansion slots
* PG4/ADR0 A12 RAM, Expansion slots
* PG5/ADR0 A13 RAM, Expansion slots
* PG6/ADR0 A14 RAM, Expansion slots
* PG7/ADR0 A15 RAM, Expansion slots
* --------------------------- ------ --------------------------------------------
*/
putreg8(0x00, Z16F_GPIOG_DD); /* Inputs: None */
putreg8(0xff, Z16F_GPIOG_AFL); /* All=Alt 1 */
/* --------------------------- ------ --------------------------------------------
* GPIO SIGNAL On-Board Connections
* --------------------------- ------ --------------------------------------------
* PH0/ANA8/WR ~WR RAM, Expansion slots
* PH1/ANA9/RD ~RD RAM, Expansion slots
* PH2/ANA10/CS0 ~RF LED3, RF transceiver, X2 (1)
* PH3/ANA11/CINP/WAIT ~SXM LED4, Chip select for the serial memory, U4 (1)
* --------------------------- ------ --------------------------------------------
*/
putreg8(0xf0, Z16F_GPIOH_DD); /* Inputs: None (PH4-PH7 undefined) */
putreg8(0x03, Z16F_GPIOH_AFH); /*~WR=Alt2 ~RD=Alt 2 */
putreg8(0x0c, Z16F_GPIOH_OUT); /* Output high: ~RF and ~SXM */
/* --------------------------- ------ --------------------------------------------
* GPIO SIGNAL On-Board Connections
* --------------------------- ------ --------------------------------------------
* PJ0/DATA8 ~SD1 LED5, Chip select for the SD card 1, X11.
* PJ1/DATA9 ~DT1 Card detect for SD card 1
* PJ2/DATA10 WP1 Write protect for SD card 1
* PJ3/DATA11 EVE EVE chip select
* PJ4/DATA12 ~SD2 LED6, Chip select for the SD card 2, X10.
* PJ5/DATA13 ~DT2 Card detect for SD card 2
* PJ6/DATA14 WP2 Write protect for SD card 2
* PJ7/DATA15 ~SD0 LED7, Chip select for the microSD 0, X12.
* --------------------------- ------ --------------------------------------------
*/
putreg8(0x66, Z16F_GPIOJ_DD); /* Inputs: ~DT1, WP1, ~DT2, and WP2 */
putreg8(0x99, Z16F_GPIOJ_OUT); /* Output high: ~SD1, EVE, ~SD2, ~SD0 */
/* --------------------------- ------ --------------------------------------------
* GPIO SIGNAL On-Board Connections
* --------------------------- ------ --------------------------------------------
* PK0/BHEN ~BHE RAM, Expansion slots
* PK1/BLEN ~BLE RAM, Expansion slots
* PK2/CS0 ~0000 Bottom RAM bank, Expansion slots
* PK3/CS1 ~8000 Top RAM bank, Expansion slots
* PK4/CS2 ~F000 Expansion slots
* PK5/CS3 ~FFC8 Expansion slots
* PK6/CS4 ~FFD0 Expansion slots
* PK7/CS5 ~FFD8 Expansion slots
* --------------------------- ------ --------------------------------------------
*/
putreg8(0x00, Z16F_GPIOK_DD); /* Inputs: None */
putreg8(0xff, Z16F_GPIOK_AFL); /* All=Alt 1 */
}
/***************************************************************************
* Public Functions
***************************************************************************/
/***************************************************************************
* Name: z16f_lowinit
***************************************************************************/
void z16f_lowinit(void)
{
z16f_extcsinit(); /* Configure external memory */
z16f_gpioinit(); /* Configure board GPIOs */
}
|
