diff options
Diffstat (limited to 'src/avr')
| -rw-r--r-- | src/avr/ao_arch_funcs.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/avr/ao_arch_funcs.h b/src/avr/ao_arch_funcs.h index e400c98b..792ff744 100644 --- a/src/avr/ao_arch_funcs.h +++ b/src/avr/ao_arch_funcs.h @@ -41,12 +41,29 @@ extern __xdata uint8_t ao_spi_mutex; 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; |