-/*
- * Copyright © 2012 Keith Packard <keithp@keithp.com>
- *
- * 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; version 2 of the License.
- *
- * 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, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- */
-
-/*
- * ao_spi.c
- */
-
-extern __xdata uint8_t ao_spi_mutex;
-
-#define AO_SPI_SPEED_FAST 17
-#define AO_SPI_SPEED_200kHz 13
-
-#define ao_spi_set_speed(speed) (U0GCR = (UxGCR_CPOL_NEGATIVE | \
- UxGCR_CPHA_FIRST_EDGE | \
- UxGCR_ORDER_MSB | \
- ((speed) << UxGCR_BAUD_E_SHIFT)))
-
-#define ao_spi_get_mask(reg,mask,bus,speed) do { \
- ao_mutex_get(&ao_spi_mutex); \
- ao_spi_set_speed(speed); \
- (reg) &= ~(mask); \
- } while (0)
-
-#define ao_spi_put_mask(reg,mask,bus) do { \
- (reg) |= (mask); \
- ao_mutex_put(&ao_spi_mutex); \
- } while (0)
-
-
-#define ao_spi_get_bit(reg,bit,pin,bus,speed) do { \
- ao_mutex_get(&ao_spi_mutex); \
- ao_spi_set_speed(speed); \
- pin = 0; \
- } while (0)
-
-#define ao_spi_put_bit(reg,bit,pin,bus) do { \
- pin = 1; \
- ao_mutex_put(&ao_spi_mutex); \
- } while (0)
-
-
-/*
- * The SPI mutex must be held to call either of these
- * functions -- this mutex covers the entire SPI operation,
- * from chip select low to chip select high
- */
-
-void
-ao_spi_send_bus(void __xdata *block, uint16_t len) __reentrant;
-
-void
-ao_spi_recv_bus(void __xdata *block, uint16_t len) __reentrant;
-
-#define ao_spi_send(block, len, bus) ao_spi_send_bus(block, len)
-#define ao_spi_recv(block, len, bus) ao_spi_recv_bus(block, len)
-
-void
-ao_spi_init(void);
-
-#define ao_spi_init_cs(port, mask) do { \
- SPI_CS_PORT |= mask; \
- SPI_CS_DIR |= mask; \
- SPI_CS_SEL &= ~mask; \
- } while (0)
-
-#define cc1111_enable_output(port,dir,sel,pin,bit,v) do { \
- pin = v; \
- dir |= (1 << bit); \
- sel &= ~(1 << bit); \
- } while (0)
-
-#define disable_unreachable _Pragma("disable_warning 126")
-
-#define token_paster(x,y) x ## y
-#define token_evaluator(x,y) token_paster(x,y)
-#define ao_enable_output(port,bit,pin,v) cc1111_enable_output(port,token_evaluator(port,DIR), token_evaluator(port,SEL), pin, bit, v)
-#define ao_gpio_set(port, bit, pin, v) ((pin) = (v))