extern __xdata uint8_t ao_spi_mutex;
-#define ao_spi_get_mask(reg,mask) do {\
+#define ao_spi_get_mask(reg,mask,bus) do { \
ao_mutex_get(&ao_spi_mutex); \
(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 {\
+#define ao_spi_get_bit(bit,bus) do { \
ao_mutex_get(&ao_spi_mutex); \
(bit) = 0; \
} while (0)
-#define ao_spi_put_bit(bit) do { \
+#define ao_spi_put_bit(bit,bus) do { \
(bit) = 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)
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)