Further implement modes

include/animation.h

@@ -0,0 +1,36 @@
+#ifndef _ANIMATION_H_
+#define _ANIMATION_H_
+
+#include <stdint.h>
+
+enum animation_state {
+	ANI_RED,
+	ANI_GREEN,
+	ANI_BLUE,
+	ANI_RAINBOW,
+	ANI_FLASH_WHITE,
+};
+
+struct animation {
+	enum animation_state state;
+	uint32_t step;
+	uint32_t last_tick;
+	uint32_t next_interval;
+};
+
+/**
+ * @brief Reset aniamtion to start conditions
+ * 
+ * @param ani Animation
+ */
+void animation_reset(struct animation *ani);
+
+/**
+ * @brief Poll animation
+ * 
+ * @param ani Animation
+ * @param dmx_universe Target universe to play animation into. Must be big enough
+ */
+void animation_process(struct animation *ani, uint8_t *dmx_universe);
+
+#endif /* _ANIMATION_H_ */

include/gamma.h

@@ -0,0 +1,13 @@
+#ifndef _GAMMA_H_
+#define _GAMMA_H_
+
+#include <stdint.h>
+
+extern const uint8_t global_gamma_correction_table[256];
+
+static inline uint8_t gamma_corr(uint8_t raw)
+{
+	return global_gamma_correction_table[raw];
+}
+
+#endif /* _GAMMA_H_ */

include/i2c.h

@@ -9,6 +9,6 @@ void i2c_reset(void);
 
 int i2c_write(uint8_t i2c_addr, const uint8_t *data, uint8_t len);
 
-int i2c_read(uint8_t i2c_addr, uint8_t command, uint8_t *data, uint8_t len);
 
+int i2c_read(uint8_t i2c_addr, uint8_t command, uint8_t *data, uint8_t len);
 #endif /* _I2C_H_ */

include/pca9555.h

@@ -0,0 +1,28 @@
+#ifndef _PCA9555_H_
+#define _PCA9555_H_
+
+#include <stdint.h>
+
+#define PCA9555_I2C_ADDR (0x40)
+#define PCA9555_REG_IN_PORT0 (0x0)
+#define PCA9555_REG_IN_PORT1 (0x1)
+#define PCA9555_REG_OUT_PORT0 (0x2)
+#define PCA9555_REG_OUT_PORT1 (0x3)
+#define PCA9555_REG_POLARITY0 (0x4)
+#define PCA9555_REG_POLARITY1 (0x5)
+#define PCA9555_REG_CONFIG0 (0x6)
+#define PCA9555_REG_CONFIG1 (0x7)
+
+/**
+ * @brief Init I2C and port expander
+ */
+void port_expander_init(void);
+
+uint8_t port_expander_get_buttons(void);
+
+void port_expander_set_leds(uint8_t leds);
+
+uint8_t port_expander_get_leds(void);
+
+void port_expander_set_single_led(uint8_t pos, uint8_t val);
+#endif /* _PCA9555_H */