ao_mutex_put(&ao_spi_mutex); \
} while (0)
+
+#define ao_gpio_token_paster(x,y) x ## y
+#define ao_gpio_token_evaluator(x,y) ao_gpio_token_paster(x,y)
+
+#define ao_gpio_set(port, bit, pin, v) do { \
+ if (v) \
+ (ao_gpio_token_evaluator(PORT,port)) |= (1 << bit); \
+ else \
+ (ao_gpio_token_evaluator(PORT,port)) &= ~(1 << bit); \
+ } 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
*/
+#define ao_enable_output(port, bit, pin, v) do { \
+ ao_gpio_set(port, bit, pin, v); \
+ ao_gpio_token_evaluator(DDR,port) |= (1 << bit); \
+ } while (0)
+
+
void
ao_spi_send_bus(void __xdata *block, uint16_t len) __reentrant;