# board_stb.h

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    00001 /* Copyright (c) 2008 Axel Wachtler
    00002    All rights reserved.
    00003
    00004    Redistribution and use in source and binary forms, with or without
    00005    modification, are permitted provided that the following conditions
    00006    are met:
    00007
    00008    * Redistributions of source code must retain the above copyright
    00009      notice, this list of conditions and the following disclaimer.
    00010    * Redistributions in binary form must reproduce the above copyright
    00011      notice, this list of conditions and the following disclaimer in the
    00012      documentation and/or other materials provided with the distribution.
    00013    * Neither the name of the authors nor the names of its contributors
    00014      may be used to endorse or promote products derived from this software
    00015      without specific prior written permission.
    00016
    00017    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    00018    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    00019    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    00020    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
    00021    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    00022    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    00023    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    00024    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    00025    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    00026    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    00027    POSSIBILITY OF SUCH DAMAGE. */
    00028
    00029 /* $Id$ */
    00099 #if defined(stb230)
    00100 # define BOARD_TYPE (BOARD_STB230)
    00101 # define BOARD_NAME "stb230"
    00102 # define RADIO_TYPE (RADIO_AT86RF230A)
    00103 #elif defined(stb230b)
    00104 # define BOARD_TYPE (BOARD_STB230B)
    00105 # define BOARD_NAME "stb230b"
    00106 # define RADIO_TYPE (RADIO_AT86RF230B)
    00107 #elif defined(stb231)
    00108 # define BOARD_TYPE (BOARD_STB231)
    00109 # define BOARD_NAME "stb231"
    00110 # define RADIO_TYPE (RADIO_AT86RF231)
    00111 #elif defined(stb212)
    00112 # define BOARD_TYPE (BOARD_STB212)
    00113 # define BOARD_NAME "stb212"
    00114 # define RADIO_TYPE (RADIO_AT86RF212)
    00115 #endif
    00116
    00117 #ifndef BOARD_STB2XX_H
    00118 #define BOARD_STB2XX_H
    00119
    00120 /*=== Compile time parameters ========================================*/
    00121 #ifndef DEFAULT_SPI_RATE
    00122 # define DEFAULT_SPI_RATE  (SPI_RATE_1_2)
    00123 #endif
    00124
    00125 /*=== radio interface definition =====================================*/
    00126 #if BOARD_TYPE == BOARD_STB230 || BOARD_TYPE == BOARD_STB230B
    00127 # include "base_rdk230.h"
    00128 #else
    00129 # include "base_rdk2xx.h"
    00130 #endif
    00131
    00132 /*
    00133  * The IO subsystem of the Sensor Terminal Board is, a little
    00134  * cumbersome to operate.  Besides the LEDs that are operated on an
    00135  * MMIO register and cannot be read back, the FT245 is attached to the
    00136  * external memory bus through a 74VHC245MTC bus driver which is by
    00137  * default enabled to drive the bus (rather than to read it).  Thus,
    00138  * much care must be taken to avoid a bus contention where both, the
    00139  * 74VHC245MTC and the AVR drive the multiplexed address/data bus.
    00140  *
    00141  * We avoid that bus contention by swapping the meaning of the chip
    00142  * select signal for the FT245 and the actual /WR line: both are ORed
    00143  * together, so for the actual effect towards the FT245, it does not
    00144  * matter whether we pulse /WR, or we pulse the correct high address
    00145  * selection.
    00146  */
    00147
    00148 static inline void hif_mmio_init(void)
    00149 {
    00150     DDRC |= 0xc0;               /* xmem A14...A15 */
    00151     PORTC = (PORTC & ~0xc0) | 0x80; /* high addr 0x80 => external
    00152                                      * SRAM */
    00153     PORTG &= ~0x05;             /* PG0: xmem /WR, activate to make the
    00154                                  * 74VHC245MTC not drive the bus
    00155                                  * PG2: xmem ALE; not used but keep
    00156                                  * low all the time */
    00157     PORTG |= 0x02;              /* PG1: xmem /RD, deactivate */
    00158     DDRG |= 0x07;               /* make /RD, /WR, and ALE outputs */
    00159 }
    00160
    00161 static inline void hif_usb_write(uint8_t val)
    00162 {
    00163     DDRA = 0xFF;
    00164     PORTA = val;
    00165     PORTC = (PORTC & ~0xc0);    /* select FT245 -> /WR pulse */
    00166     __asm volatile("nop");
    00167     PORTC = (PORTC & ~0xc0) | 0x80; /* re-select SRAM */
    00168     DDRA = 0;
    00169     PORTA = 0;                  /* avoid pullups */
    00170 }
    00171
    00172 static inline uint8_t hif_usb_read(void)
    00173 {
    00174     PORTG |= 0x01;              /* de-assert /WR */
    00175     PORTC = (PORTC & ~0xc0);    /* select FT245 */
    00176     PORTG &= ~0x02;             /* /RD pulse */
    00177     PORTG |= 0x02;
    00178     __asm volatile("nop");
    00179     uint8_t rv = PINA;
    00180     PORTC = (PORTC & ~0xc0) | 0x80; /* re-select SRAM */
    00181     PORTG &= ~0x01;                 /* re-assert /WR */
    00182
    00183     return rv;
    00184 }
    00185
    00186
    00187 static inline void hif_led_write(uint8_t val)
    00188 {
    00189     PORTG |= 0x01;              /* de-assert /WR */
    00190     DDRA = 0xFF;
    00191     PORTA = val;
    00192     PORTC = (PORTC & ~0xc0) | 0x40; /* select IO address */
    00193     PORTG &= ~0x01;                 /* /WR pulse */
    00194     PORTG |= 0x01;
    00195     __asm volatile("nop");
    00196     PORTC = (PORTC & ~0xc0) | 0x80; /* re-select SRAM */
    00197     DDRA = 0;
    00198     PORTA = 0;                  /* avoid pullups */
    00199     PORTG &= ~0x01;             /* re-assert /WR */
    00200 }
    00201
    00202 static inline uint8_t hif_key_read(void)
    00203 {
    00204     PORTG |= 0x01;              /* de-assert /WR */
    00205     PORTC = (PORTC & ~0xc0) | 0x40; /* select IO address */
    00206     PORTG &= ~0x02;             /* /RD pulse */
    00207     PORTG |= 0x02;
    00208     __asm volatile("nop");
    00209     uint8_t rv = PINA;
    00210     PORTC = (PORTC & ~0xc0) | 0x80; /* re-select SRAM */
    00211     PORTG &= ~0x01;                 /* re-assert /WR */
    00212
    00213     return rv;
    00214 }
    00215
    00216 /*=== LED access macros ==============================================*/
    00217 #if !defined(USE_RCB_LEDS)
    00218 /*=== use LEDs on STB (Memory Mapped) ===*/
    00219
    00220 # define LED_SHADOW    GPIOR2
    00221 # define LED_MASK      (0x03)
    00222 # define LED_SHIFT     (0)
    00223 # define LEDS_INVERSE  (1)
    00224 # define LED_NUMBER    (2)
    00225
    00226 # define LED_INIT()\
    00227         do{\
    00228             hif_mmio_init(); \
    00229             LED_SHADOW = LED_MASK;\
    00230             hif_led_write(LED_SHADOW);        \
    00231         }while(0)
    00232
    00233 # define LED_SET_VALUE(x) \
    00234         do{\
    00235             LED_SHADOW = (LED_SHADOW & ~LED_MASK) | ((~x<<LED_SHIFT) & LED_MASK);\
    00236             hif_led_write(LED_SHADOW);\
    00237         }while(0)
    00238
    00239 # define LED_GET_VALUE()\
    00240         ((~LED_SHADOW & LED_MASK) >> LED_SHIFT)
    00241
    00242 # define LED_SET(ln)\
    00243         do{\
    00244             LED_SHADOW &= ~(_BV(ln+LED_SHIFT) & LED_MASK);\
    00245             hif_led_write(LED_SHADOW);\
    00246         }while(0)
    00247
    00248 # define LED_CLR(ln)\
    00249         do{\
    00250             LED_SHADOW |= (_BV(ln+LED_SHIFT) & LED_MASK);\
    00251             hif_led_write(LED_SHADOW);\
    00252         }while(0)
    00253
    00254 # define LED_VAL(msk,val)\
    00255         do{\
    00256             LED_SHADOW &= ~(LED_MASK|(msk<<LED_SHIFT)); \
    00257             LED_SHADOW |= ~(val & (LED_MASK|msk));\
    00258             hif_led_write(LED_SHADOW);\
    00259         }while(0)
    00260
    00261
    00262 # define LED_TOGGLE(ln)\
    00263         do{\
    00264             LED_SHADOW ^= (_BV(ln+LED_SHIFT) & LED_MASK);\
    00265             hif_led_write(LED_SHADOW);\
    00266         }while(0)
    00267
    00268 #else
    00269 /*=== use LEDs on RCB (IO Mapped) ===*/
    00270 # define LED_PORT      PORTE
    00271 # define LED_DDR       DDRE
    00272 # define LED_MASK      (0x1c)
    00273 # define LED_SHIFT     (2)
    00274 # define LEDS_INVERSE  (1)
    00275 # define LED_NUMBER    (3)
    00276 #endif
    00277 /*=== KEY access macros ==============================================*/
    00278 #define PIN_KEY       (hif_key_read())
    00279 #define MASK_KEY      (0x1)
    00280 #define SHIFT_KEY     (0)
    00281 #define INVERSE_KEYS  (0)
    00282 #define PULLUP_KEYS   (0)
    00283 #define KEY_INIT      hif_mmio_init
    00284
    00285 /*=== Host Interface ================================================*/
    00286 #define HIF_TYPE      (HIF_FT245)
    00287 #define HIF_IO_ENABLE hif_mmio_init
    00288 #define HIF_USB_READ()  hif_usb_read()
    00289 #define HIF_USB_WRITE(x) hif_usb_write(x)
    00290 #define HIF_NO_DATA   (0x0100)
    00291 #define FT245_DDR    DDRE
    00292 #define FT245_PIN    PINE
    00293 #define FT245_TXE    _BV(6)
    00294 #define FT245_RXF    _BV(7)
    00295 #define FT245_INIT() do { \
    00296            FT245_DDR &= ~(FT245_TXE|FT245_RXF);\
    00297         } while(0)
    00298 #define TX_IS_READY        (0)
    00299 #define TX_IS_BLOCKED      (FT245_TXE)
    00300 #define RX_HAS_DATA        (0)
    00301 #define RX_HAS_NO_DATA     (FT245_RXF)
    00302 #define FT245_RX_DATA()  ((FT245_PIN & FT245_RXF))
    00303 #define FT245_TX_DATA()  ((FT245_PIN & FT245_TXE))
    00304
    00305 /*=== TIMER Interface ===============================================*/
    00306 #define HWTMR_PRESCALE  (1)
    00307 #define HWTIMER_TICK    ((1.0*HWTMR_PRESCALE)/F_CPU)
    00308 #define HWTIMER_TICK_NB (0xFFFFUL+1)
    00309 #define HWTIMER_REG     (TCNT1)
    00310 #define TIMER_TICK      (HWTIMER_TICK_NB * HWTIMER_TICK)
    00311 #define TIMER_POOL_SIZE     (4)
    00312
    00314 #define TIMER_IRQ_vect   TIMER1_OVF_vect
    00315
    00325 # define TIMER_INIT() \
    00326     do{ \
    00327         TCCR1B |= _BV(CS10); \
    00328         TIMSK1 |= _BV(TOIE1); \
    00329     }while(0)
    00330
    00331 #endif /* BOARD_STB_H*/