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keychron_qmk_firmware/keyboard/hhkb/rn42/rn42_task.c

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#include <stdint.h>
#include <string.h>
#include <avr/pgmspace.h>
#include <avr/eeprom.h>
#include "keycode.h"
#include "serial.h"
#include "host.h"
#include "action.h"
#include "action_util.h"
#include "lufa.h"
#include "rn42_task.h"
#include "print.h"
#include "debug.h"
#include "timer.h"
#include "wait.h"
#include "command.h"
#include "battery.h"
static bool config_mode = false;
static bool force_usb = false;
static void status_led(bool on)
{
if (on) {
DDRE |= (1<<6);
PORTE &= ~(1<<6);
} else {
DDRE |= (1<<6);
PORTE |= (1<<6);
}
}
void rn42_task_init(void)
{
battery_init();
}
void rn42_task(void)
{
int16_t c;
// Raw mode: interpret output report of LED state
while ((c = rn42_getc()) != -1) {
// LED Out report: 0xFE, 0x02, 0x01, <leds>
// To get the report over UART set bit3 with SH, command.
static enum {LED_INIT, LED_FE, LED_02, LED_01} state = LED_INIT;
switch (state) {
case LED_INIT:
if (c == 0xFE) state = LED_FE;
else {
if (0x0 <= c && c <= 0x7f) xprintf("%c", c);
else xprintf(" %02X", c);
}
break;
case LED_FE:
if (c == 0x02) state = LED_02;
else state = LED_INIT;
break;
case LED_02:
if (c == 0x01) state = LED_01;
else state = LED_INIT;
break;
case LED_01:
dprintf("LED status: %02X\n", c);
rn42_set_leds(c);
state = LED_INIT;
break;
default:
state = LED_INIT;
}
}
/* Bluetooth mode when ready */
if (!config_mode && !force_usb) {
if (!rn42_rts() && host_get_driver() != &rn42_driver) {
clear_keyboard();
host_set_driver(&rn42_driver);
} else if (rn42_rts() && host_get_driver() != &lufa_driver) {
clear_keyboard();
host_set_driver(&lufa_driver);
}
}
static uint16_t prev_timer = 0;
uint16_t e = timer_elapsed(prev_timer);
if (e > 1000) {
/* every second */
prev_timer += e/1000*1000;
/* Low voltage alert */
uint8_t bs = battery_status();
if (bs == LOW_VOLTAGE) {
battery_led(LED_ON);
} else {
battery_led(LED_CHARGER);
}
/* every minute */
uint32_t t = timer_read32()/1000;
if (t%60 == 0) {
uint16_t v = battery_voltage();
uint8_t h = t/3600;
uint8_t m = t%3600/60;
uint8_t s = t%60;
dprintf("%02u:%02u:%02u\t%umV\n", h, m, s, v);
/* TODO: xprintf doesn't work for this.
xprintf("%02u:%02u:%02u\t%umV\n", (t/3600), (t%3600/60), (t%60), v);
*/
}
}
/* Connection monitor */
if (!rn42_rts() && rn42_linked()) {
status_led(true);
} else {
status_led(false);
}
}
/******************************************************************************
* Command
******************************************************************************/
static host_driver_t *prev_driver = &rn42_driver;
static void print_rn42(void)
{
int16_t c;
while ((c = rn42_getc()) != -1) {
xprintf("%c", c);
}
}
static void clear_rn42(void)
{
while (rn42_getc() != -1) ;
}
#define SEND_STR(str) send_str(PSTR(str))
#define SEND_COMMAND(cmd) send_command(PSTR(cmd))
static void send_str(const char *str)
{
uint8_t c;
while ((c = pgm_read_byte(str++)))
rn42_putc(c);
}
static const char *send_command(const char *cmd)
{
static const char *s;
send_str(cmd);
wait_ms(500);
s = rn42_gets(100);
xprintf("%s\r\n", s);
print_rn42();
return s;
}
static void enter_command_mode(void)
{
prev_driver = host_get_driver();
clear_keyboard();
host_set_driver(&rn42_config_driver); // null driver; not to send a key to host
rn42_disconnect();
while (rn42_linked()) ;
print("Entering config mode ...\n");
wait_ms(1100); // need 1 sec
SEND_COMMAND("$$$");
wait_ms(600); // need 1 sec
print_rn42();
const char *s = SEND_COMMAND("v\r\n");
if (strncmp("v", s, 1) != 0) SEND_COMMAND("+\r\n"); // local echo on
}
static void exit_command_mode(void)
{
print("Exiting config mode ...\n");
SEND_COMMAND("---\r\n"); // exit
rn42_autoconnect();
clear_keyboard();
host_set_driver(prev_driver);
}
static void init_rn42(void)
{
// RN-42 configure
if (!config_mode) enter_command_mode();
SEND_COMMAND("SF,1\r\n"); // factory defaults
SEND_COMMAND("S-,TmkBT\r\n");
SEND_COMMAND("SS,Keyboard/Mouse\r\n");
SEND_COMMAND("SM,4\r\n"); // auto connect(DTR)
SEND_COMMAND("SW,8000\r\n"); // Sniff disable
SEND_COMMAND("S~,6\r\n"); // HID profile
SEND_COMMAND("SH,003C\r\n"); // combo device, out-report, 4-reconnect
SEND_COMMAND("SY,FFF4\r\n"); // transmit power -12
SEND_COMMAND("R,1\r\n");
if (!config_mode) exit_command_mode();
}
#if 0
// Switching connections
// NOTE: Remote Address doesn't work in the way manual says.
// EEPROM address for link store
#define RN42_LINK0 (uint8_t *)128
#define RN42_LINK1 (uint8_t *)140
#define RN42_LINK2 (uint8_t *)152
#define RN42_LINK3 (uint8_t *)164
static void store_link(uint8_t *eeaddr)
{
enter_command_mode();
SEND_STR("GR\r\n"); // remote address
const char *s = rn42_gets(500);
if (strcmp("GR", s) == 0) s = rn42_gets(500); // ignore local echo
xprintf("%s(%d)\r\n", s, strlen(s));
if (strlen(s) == 12) {
for (int i = 0; i < 12; i++) {
eeprom_write_byte(eeaddr+i, *(s+i));
dprintf("%c ", *(s+i));
}
dprint("\r\n");
}
exit_command_mode();
}
static void restore_link(const uint8_t *eeaddr)
{
enter_command_mode();
SEND_COMMAND("SR,Z\r\n"); // remove remote address
SEND_STR("SR,"); // set remote address from EEPROM
for (int i = 0; i < 12; i++) {
uint8_t c = eeprom_read_byte(eeaddr+i);
rn42_putc(c);
dprintf("%c ", c);
}
dprintf("\r\n");
SEND_COMMAND("\r\n");
SEND_COMMAND("R,1\r\n"); // reboot
exit_command_mode();
}
static const char *get_link(uint8_t * eeaddr)
{
static char s[13];
for (int i = 0; i < 12; i++) {
uint8_t c = eeprom_read_byte(eeaddr+i);
s[i] = c;
}
s[12] = '\0';
return s;
}
#endif
static void pairing(void)
{
enter_command_mode();
SEND_COMMAND("SR,Z\r\n"); // remove remote address
SEND_COMMAND("R,1\r\n"); // reboot
exit_command_mode();
}
bool command_extra(uint8_t code)
{
uint32_t t;
uint16_t b;
switch (code) {
case KC_H:
case KC_SLASH: /* ? */
print("\n\n----- Bluetooth RN-42 Help -----\n");
print("i: RN-42 info\n");
print("b: battery voltage\n");
print("Del: enter/exit RN-42 config mode\n");
print("Slck: RN-42 initialize\n");
#if 0
print("1-4: restore link\n");
print("F1-F4: store link\n");
#endif
print("p: pairing\n");
if (config_mode) {
return true;
} else {
print("u: toggle Force USB mode\n");
return false; // to display default command help
}
case KC_P:
pairing();
return true;
#if 0
/* Store link address to EEPROM */
case KC_F1:
store_link(RN42_LINK0);
return true;
case KC_F2:
store_link(RN42_LINK1);
return true;
case KC_F3:
store_link(RN42_LINK2);
return true;
case KC_F4:
store_link(RN42_LINK3);
return true;
/* Restore link address to EEPROM */
case KC_1:
restore_link(RN42_LINK0);
return true;
case KC_2:
restore_link(RN42_LINK1);
return true;
case KC_3:
restore_link(RN42_LINK2);
return true;
case KC_4:
restore_link(RN42_LINK3);
return true;
#endif
case KC_I:
print("\n----- RN-42 info -----\n");
xprintf("protocol: %s\n", (host_get_driver() == &rn42_driver) ? "RN-42" : "LUFA");
xprintf("force_usb: %X\n", force_usb);
xprintf("rn42: %s\n", rn42_rts() ? "OFF" : (rn42_linked() ? "CONN" : "ON"));
xprintf("rn42_autoconnecting(): %X\n", rn42_autoconnecting());
xprintf("config_mode: %X\n", config_mode);
xprintf("USB State: %s\n",
(USB_DeviceState == DEVICE_STATE_Unattached) ? "Unattached" :
(USB_DeviceState == DEVICE_STATE_Powered) ? "Powered" :
(USB_DeviceState == DEVICE_STATE_Default) ? "Default" :
(USB_DeviceState == DEVICE_STATE_Addressed) ? "Addressed" :
(USB_DeviceState == DEVICE_STATE_Configured) ? "Configured" :
(USB_DeviceState == DEVICE_STATE_Suspended) ? "Suspended" : "?");
xprintf("battery: ");
switch (battery_status()) {
case FULL_CHARGED: xprintf("FULL"); break;
case CHARGING: xprintf("CHARG"); break;
case DISCHARGING: xprintf("DISCHG"); break;
case LOW_VOLTAGE: xprintf("LOW"); break;
default: xprintf("?"); break;
};
xprintf("\n");
xprintf("RemoteWakeupEnabled: %X\n", USB_Device_RemoteWakeupEnabled);
xprintf("VBUS: %X\n", USBSTA&(1<<VBUS));
t = timer_read32()/1000;
uint8_t d = t/3600/24;
uint8_t h = t/3600;
uint8_t m = t%3600/60;
uint8_t s = t%60;
xprintf("uptime: %02u %02u:%02u:%02u\n", d, h, m, s);
#if 0
xprintf("LINK0: %s\r\n", get_link(RN42_LINK0));
xprintf("LINK1: %s\r\n", get_link(RN42_LINK1));
xprintf("LINK2: %s\r\n", get_link(RN42_LINK2));
xprintf("LINK3: %s\r\n", get_link(RN42_LINK3));
#endif
return true;
case KC_B:
// battery monitor
t = timer_read32()/1000;
b = battery_voltage();
xprintf("BAT: %umV\t", b);
xprintf("%02u:", t/3600);
xprintf("%02u:", t%3600/60);
xprintf("%02u\n", t%60);
return true;
case KC_U:
if (config_mode) return false;
if (force_usb) {
print("Auto mode\n");
force_usb = false;
} else {
print("USB mode\n");
force_usb = true;
clear_keyboard();
host_set_driver(&lufa_driver);
}
return true;
case KC_DELETE:
/* RN-42 Command mode */
if (rn42_autoconnecting()) {
enter_command_mode();
command_state = CONSOLE;
config_mode = true;
} else {
exit_command_mode();
command_state = ONESHOT;
config_mode = false;
}
return true;
case KC_SCROLLLOCK:
init_rn42();
return true;
default:
if (config_mode)
return true;
else
return false; // yield to default command
}
return true;
}
/*
* RN-42 Command mode
* sends charactors to the module
*/
static uint8_t code2asc(uint8_t code);
bool command_console_extra(uint8_t code)
{
rn42_putc(code2asc(code));
return true;
}
// convert keycode into ascii charactor
static uint8_t code2asc(uint8_t code)
{
bool shifted = (get_mods() & (MOD_BIT(KC_LSHIFT)|MOD_BIT(KC_RSHIFT))) ? true : false;
switch (code) {
case KC_A: return (shifted ? 'A' : 'a');
case KC_B: return (shifted ? 'B' : 'b');
case KC_C: return (shifted ? 'C' : 'c');
case KC_D: return (shifted ? 'D' : 'd');
case KC_E: return (shifted ? 'E' : 'e');
case KC_F: return (shifted ? 'F' : 'f');
case KC_G: return (shifted ? 'G' : 'g');
case KC_H: return (shifted ? 'H' : 'h');
case KC_I: return (shifted ? 'I' : 'i');
case KC_J: return (shifted ? 'J' : 'j');
case KC_K: return (shifted ? 'K' : 'k');
case KC_L: return (shifted ? 'L' : 'l');
case KC_M: return (shifted ? 'M' : 'm');
case KC_N: return (shifted ? 'N' : 'n');
case KC_O: return (shifted ? 'O' : 'o');
case KC_P: return (shifted ? 'P' : 'p');
case KC_Q: return (shifted ? 'Q' : 'q');
case KC_R: return (shifted ? 'R' : 'r');
case KC_S: return (shifted ? 'S' : 's');
case KC_T: return (shifted ? 'T' : 't');
case KC_U: return (shifted ? 'U' : 'u');
case KC_V: return (shifted ? 'V' : 'v');
case KC_W: return (shifted ? 'W' : 'w');
case KC_X: return (shifted ? 'X' : 'x');
case KC_Y: return (shifted ? 'Y' : 'y');
case KC_Z: return (shifted ? 'Z' : 'z');
case KC_1: return (shifted ? '!' : '1');
case KC_2: return (shifted ? '@' : '2');
case KC_3: return (shifted ? '#' : '3');
case KC_4: return (shifted ? '$' : '4');
case KC_5: return (shifted ? '%' : '5');
case KC_6: return (shifted ? '^' : '6');
case KC_7: return (shifted ? '&' : '7');
case KC_8: return (shifted ? '*' : '8');
case KC_9: return (shifted ? '(' : '9');
case KC_0: return (shifted ? ')' : '0');
case KC_ENTER: return '\n';
case KC_ESCAPE: return 0x1B;
case KC_BSPACE: return '\b';
case KC_TAB: return '\t';
case KC_SPACE: return ' ';
case KC_MINUS: return (shifted ? '_' : '-');
case KC_EQUAL: return (shifted ? '+' : '=');
case KC_LBRACKET: return (shifted ? '{' : '[');
case KC_RBRACKET: return (shifted ? '}' : ']');
case KC_BSLASH: return (shifted ? '|' : '\\');
case KC_NONUS_HASH: return (shifted ? '|' : '\\');
case KC_SCOLON: return (shifted ? ':' : ';');
case KC_QUOTE: return (shifted ? '"' : '\'');
case KC_GRAVE: return (shifted ? '~' : '`');
case KC_COMMA: return (shifted ? '<' : ',');
case KC_DOT: return (shifted ? '>' : '.');
case KC_SLASH: return (shifted ? '?' : '/');
case KC_DELETE: return '\0'; // Delete to disconnect
default: return ' ';
}
}
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