1 files changed, 42 insertions, 0 deletions
diff --git a/src/avr/gpio.h b/src/avr/gpio.h
new file mode 100644
index 00000000..e6cbbd32
--- /dev/null
+++ b/src/avr/gpio.h
@@ -0,0 +1,42 @@
+#ifndef __AVR_GPIO_H
+#define __AVR_GPIO_H
+
+#include <stdint.h>
+#include "compiler.h" // __always_inline
+
+struct gpio_out {
+    struct gpio_digital_regs *regs;
+    // gcc (pre v6) does better optimization when uint8_t are bitfields
+    uint8_t bit : 8;
+};
+struct gpio_out gpio_out_setup(uint8_t pin, uint8_t val);
+void gpio_out_toggle(struct gpio_out g);
+void gpio_out_write(struct gpio_out g, uint8_t val);
+
+struct gpio_in {
+    struct gpio_digital_regs *regs;
+    uint8_t bit;
+};
+struct gpio_in gpio_in_setup(uint8_t pin, int8_t pull_up);
+uint8_t gpio_in_read(struct gpio_in g);
+
+struct gpio_pwm {
+    void *reg;
+    uint8_t size8;
+};
+struct gpio_pwm gpio_pwm_setup(uint8_t pin, uint32_t cycle_time, uint8_t val);
+void gpio_pwm_write(struct gpio_pwm g, uint8_t val);
+
+struct gpio_adc {
+    uint8_t chan;
+};
+struct gpio_adc gpio_adc_setup(uint8_t pin);
+uint32_t gpio_adc_sample_time(void);
+uint8_t gpio_adc_sample(struct gpio_adc g);
+void gpio_adc_clear_sample(struct gpio_adc g);
+uint16_t gpio_adc_read(struct gpio_adc g);
+
+void spi_config(void);
+void spi_transfer(char *data, uint8_t len);
+
+#endif // gpio.h