extern __xdata uint8_t ao_spi_mutex;
-#define ao_spi_get_mask(reg,mask) do {\
- ao_mutex_get(&ao_spi_mutex); \
- (reg) &= ~(mask); \
+#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_slave(bus) do { \
+ ao_mutex_get(&ao_spi_mutex); \
+ ao_spi_set_speed(AO_SPI_SPEED_FAST); \
+ } while (0)
+
+#define ao_spi_put_slave(bus) do { \
+ ao_mutex_put(&ao_spi_mutex); \
+ } while (0)
+
+#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) do { \
+#define ao_spi_put_mask(reg,mask,bus) do { \
(reg) |= (mask); \
ao_mutex_put(&ao_spi_mutex); \
} while (0)
-#define ao_spi_get_bit(bit) do {\
- ao_mutex_get(&ao_spi_mutex); \
- (bit) = 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(bit) do { \
- (bit) = 1; \
- ao_mutex_put(&ao_spi_mutex); \
+#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,
*/
void
-ao_spi_send(void __xdata *block, uint16_t len) __reentrant;
+ao_spi_send_bus(void __xdata *block, uint16_t len) __reentrant;
void
-ao_spi_recv(void __xdata *block, uint16_t len) __reentrant;
+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)
+
+#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; \
+ } 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))