altos: Replace C code attiny async output with inline asm

[fw/altos] / src / attiny / ao_arch_funcs.h

diff --git a/src/attiny/ao_arch_funcs.h b/src/attiny/ao_arch_funcs.h
index 8c9d1ae69a6dbe81135cf606c2c12ba738effb57..d4584a9fc1eeeb2dd028948ce3d78e427acd57ee 100644 (file)
--- a/src/attiny/ao_arch_funcs.h
+++ b/src/attiny/ao_arch_funcs.h
@@ -20,21 +20,16 @@
  */
 
 #define ao_spi_get_mask(reg,mask,bus,speed) do {       \
-               (reg) &= ~(mask);               \
+               (reg) &= ~(mask);                       \
        } while (0)
 
 #define ao_spi_put_mask(reg,mask,bus) do {     \
                (reg) |= (mask);                \
        } while (0)
 
-#define ao_spi_get_bit(reg,bit,pin,bus,speed) do {     \
-               (pin) = 0;                      \
-       } while (0)
-
-#define ao_spi_put_bit(reg,bit,pin,bus) do {   \
-               (pin) = 1;                      \
-       } while (0)
+#define ao_spi_get_bit(reg,bit,pin,bus,speed) ao_spi_get_mask(reg,(1<<(bit)),bus,speed)
 
+#define ao_spi_put_bit(reg,bit,pin,bus) ao_spi_put_mask(reg,(1<<(bit)),bus)
 
 #define ao_gpio_token_paster(x,y)              x ## y
 #define ao_gpio_token_evaluator(x,y)   ao_gpio_token_paster(x,y)
@@ -46,6 +41,8 @@
                        PORTB &= ~(1 << bit);   \
        } while (0)
 
+#define ao_gpio_get(port, bit, pin)    ((PORTB >> (bit)) & 1)
+
 /*
  * The SPI mutex must be held to call either of these
  * functions -- this mutex covers the entire SPI operation,