* ao_spi.c
*/
-extern __xdata uint8_t ao_spi_mutex;
+#if !HAS_SPI_0 && !HAS_SPI_1
+#define HAS_SPI_0 1
+#define SPI_0_ALT_2 1
+#endif
+
+#if HAS_SPI_0 && HAS_SPI_1
+#define MULTI_SPI 1
+#define N_SPI 2
+#else
+#define MULTI_SPI 0
+#define N_SPI 1
+#endif
+
+extern __xdata uint8_t ao_spi_mutex[N_SPI];
+
+#if MULTI_SPI
+#define ao_spi_get(bus) ao_mutex_get(&ao_spi_mutex[bus])
+#define ao_spi_put(bus) ao_mutex_put(&ao_spi_mutex[bus])
+#else
+#define ao_spi_get(bus) ao_mutex_get(&ao_spi_mutex[0])
+#define ao_spi_put(bus) ao_mutex_put(&ao_spi_mutex[0])
+#endif
#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)))
+#if MULTI_SPI
+#define ao_spi_set_speed(bus,speed) (*(bus ? &U1GCR : &U0GCR) =(UxGCR_CPOL_NEGATIVE | \
+ UxGCR_CPHA_FIRST_EDGE | \
+ UxGCR_ORDER_MSB | \
+ ((speed) << UxGCR_BAUD_E_SHIFT)))
+#else
+#define ao_spi_set_speed(bus,speed) (U0GCR = (UxGCR_CPOL_NEGATIVE | \
+ UxGCR_CPHA_FIRST_EDGE | \
+ UxGCR_ORDER_MSB | \
+ ((speed) << UxGCR_BAUD_E_SHIFT)))
+#endif
#define ao_spi_get_slave(bus) do { \
- ao_mutex_get(&ao_spi_mutex); \
- ao_spi_set_speed(AO_SPI_SPEED_FAST); \
+ ao_spi_get(bus); \
+ ao_spi_set_speed(bus,AO_SPI_SPEED_FAST); \
} while (0)
#define ao_spi_put_slave(bus) do { \
- ao_mutex_put(&ao_spi_mutex); \
+ ao_spi_put(bus); \
} while (0)
#define ao_spi_get_mask(reg,mask,bus,speed) do { \
- ao_mutex_get(&ao_spi_mutex); \
- ao_spi_set_speed(speed); \
+ ao_spi_get(bus); \
+ ao_spi_set_speed(bus,speed); \
(reg) &= ~(mask); \
} while (0)
#define ao_spi_put_mask(reg,mask,bus) do { \
(reg) |= (mask); \
- ao_mutex_put(&ao_spi_mutex); \
+ ao_spi_put(bus); \
} 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; \
+ ao_spi_get(bus); \
+ ao_spi_set_speed(bus,speed); \
+ pin = 0; \
} while (0)
#define ao_spi_put_bit(reg,bit,pin,bus) do { \
pin = 1; \
- ao_mutex_put(&ao_spi_mutex); \
+ ao_spi_put(bus); \
} while (0)
* from chip select low to chip select high
*/
+#if MULTI_SPI
+void
+ao_spi_send(void __xdata *block, uint16_t len, uint8_t bus) __reentrant;
+
+void
+ao_spi_recv(void __xdata *block, uint16_t len, uint8_t bus) __reentrant;
+#else
void
ao_spi_send_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)
+#endif
+
+#if AO_SPI_SLAVE
+void
+ao_spi_send_wait(void);
+
+void
+ao_spi_recv_wait(void);
+#endif
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; \
+#define token_paster(x,y) x ## y
+#define token_paster3(x,y,z) x ## y ## z
+#define token_evaluator(x,y) token_paster(x,y)
+#define token_evaluator3(x,y,z) token_paster3(x,y,z)
+
+#define ao_spi_init_cs(port, mask) do { \
+ port |= mask; \
+ token_evaluator(port,DIR) |= mask; \
+ token_evaluator(port,SEL) &= ~mask; \
} while (0)
#define cc1111_enable_output(port,dir,sel,pin,bit,v) do { \
#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))
+#define ao_gpio_get(port, bit, pin) (pin)
+