118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
/*
|
|
* (c) 2021 by Tomasz bla Fortuna
|
|
* License: GPLv2
|
|
*
|
|
* This file is shared with the Shine firmware. Keep it in sync (and in the
|
|
* shine's clang formatting).
|
|
*/
|
|
|
|
#pragma once
|
|
#include <stdint.h>
|
|
|
|
#define PROTOCOL_SD SD0
|
|
|
|
enum {
|
|
/*
|
|
* Main -> LED
|
|
*/
|
|
/* Basic config */
|
|
CMD_LED_ON = 0x01,
|
|
CMD_LED_OFF = 0x02,
|
|
|
|
CMD_LED_SET_PROFILE = 0x03,
|
|
CMD_LED_NEXT_PROFILE = 0x04,
|
|
CMD_LED_PREV_PROFILE = 0x05,
|
|
|
|
CMD_LED_NEXT_INTENSITY = 0x06,
|
|
CMD_LED_NEXT_ANIMATION_SPEED = 0x07,
|
|
|
|
/* Masks */
|
|
/* Override a key color, eg. capslock */
|
|
CMD_LED_MASK_SET_KEY = 0x10,
|
|
/* Override all keys in a row with configurable colors */
|
|
CMD_LED_MASK_SET_ROW = 0x11,
|
|
|
|
/* Override all keys with single color (eg. foreground color) */
|
|
CMD_LED_MASK_SET_MONO = 0x12,
|
|
|
|
/* Reactive / status */
|
|
CMD_LED_GET_STATUS = 0x20,
|
|
CMD_LED_KEY_BLINK = 0x21,
|
|
CMD_LED_KEY_DOWN = 0x22,
|
|
CMD_LED_KEY_UP = 0x23, /* TODO */
|
|
CMD_LED_IAP = 0x24,
|
|
|
|
/* Manual color control */
|
|
CMD_LED_SET_MANUAL = 0x30,
|
|
CMD_LED_COLOR_SET_KEY = 0x31,
|
|
CMD_LED_COLOR_SET_ROW = 0x32,
|
|
CMD_LED_COLOR_SET_MONO = 0x33,
|
|
|
|
/* LED -> Main */
|
|
/* Payload with data to send over HID */
|
|
CMD_LED_DEBUG = 0x40,
|
|
|
|
/* Number of profiles, current profile, on/off state,
|
|
reactive flag, brightness, errors */
|
|
CMD_LED_STATUS = 0x41,
|
|
};
|
|
|
|
/* 1 ROW * 14 COLS * 4B (RGBX) = 56 + header prefix. */
|
|
#define MAX_PAYLOAD_SIZE 64
|
|
|
|
/** Enum of the states used for the serial protocol finite-state automaton */
|
|
enum proto_state {
|
|
/* 2-byte initial start-of-message sync */
|
|
STATE_SYNC_1,
|
|
STATE_SYNC_2,
|
|
/* Waiting for command byte */
|
|
STATE_CMD,
|
|
/* Waiting for ID byte */
|
|
STATE_ID,
|
|
/* Waiting for payload size */
|
|
STATE_PAYLOAD_SIZE,
|
|
/* Reading payload until payload_position == payload_size */
|
|
STATE_PAYLOAD,
|
|
};
|
|
|
|
/* Buffer holding a single message */
|
|
typedef struct {
|
|
uint8_t command;
|
|
uint8_t msg_id;
|
|
uint8_t payload_size;
|
|
uint8_t payload[MAX_PAYLOAD_SIZE];
|
|
} message_t;
|
|
|
|
/* Internal protocol state */
|
|
typedef struct {
|
|
/* Callback to call upon receiving a valid message */
|
|
void (*callback)(const message_t *);
|
|
|
|
/* Number of read payload bytes */
|
|
uint8_t payload_position;
|
|
|
|
/* Current finite-state-automata state */
|
|
enum proto_state state;
|
|
|
|
uint8_t previous_id;
|
|
uint8_t errors;
|
|
|
|
/* Currently received message */
|
|
message_t buffer;
|
|
} protocol_t;
|
|
|
|
/* NOTE: This didn't work when defined on stack */
|
|
extern protocol_t proto;
|
|
|
|
/* Init state */
|
|
extern void proto_init(protocol_t *proto, void (*callback)(const message_t *));
|
|
|
|
/* Consume one byte and push state forward - might call the callback */
|
|
extern void proto_consume(protocol_t *proto, uint8_t byte);
|
|
|
|
/* Prolonged silence - reset state */
|
|
extern void proto_silence(protocol_t *proto);
|
|
|
|
/* Transmit message */
|
|
extern void proto_tx(uint8_t cmd, const unsigned char *buf, int payload_size, int retries);
|