Added instructions for Gemini PR support

Added comments and updated the readme to explain how to get Gemini PR to work. Also added a YouTube link showing how to flash the ecosteno.

keyboards/noll/ecosteno-geminipr.diff

@@ -0,0 +1,91 @@
+diff --git a/quantum/process_keycode/process_steno.c b/quantum/process_keycode/process_steno.c
+index 57e279f21..de610d02e 100644
+--- a/quantum/process_keycode/process_steno.c
++++ b/quantum/process_keycode/process_steno.c
+@@ -61,9 +61,6 @@
+ static uint8_t      state[MAX_STATE_SIZE] = {0};
+ static uint8_t      chord[MAX_STATE_SIZE] = {0};
+ static int8_t       pressed               = 0;
+-static steno_mode_t mode;
+-
+-static const uint8_t boltmap[64] PROGMEM = {TXB_NUL, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_S_L, TXB_S_L, TXB_T_L, TXB_K_L, TXB_P_L, TXB_W_L, TXB_H_L, TXB_R_L, TXB_A_L, TXB_O_L, TXB_STR, TXB_STR, TXB_NUL, TXB_NUL, TXB_NUL, TXB_STR, TXB_STR, TXB_E_R, TXB_U_R, TXB_F_R, TXB_R_R, TXB_P_R, TXB_B_R, TXB_L_R, TXB_G_R, TXB_T_R, TXB_S_R, TXB_D_R, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_Z_R};
+ 
+ static void steno_clear_state(void) {
+     memset(state, 0, sizeof(state));
+@@ -81,16 +78,9 @@ static void send_steno_state(uint8_t size, bool send_empty) {
+ }
+ 
+ void steno_init() {
+-    if (!eeconfig_is_enabled()) {
+-        eeconfig_init();
+-    }
+-    mode = eeprom_read_byte(EECONFIG_STENOMODE);
+ }
+ 
+ void steno_set_mode(steno_mode_t new_mode) {
+-    steno_clear_state();
+-    mode = new_mode;
+-    eeprom_update_byte(EECONFIG_STENOMODE, mode);
+ }
+ 
+ /* override to intercept chords right before they get sent.
+@@ -103,19 +93,9 @@ __attribute__((weak)) bool postprocess_steno_user(uint16_t keycode, keyrecord_t
+ __attribute__((weak)) bool process_steno_user(uint16_t keycode, keyrecord_t *record) { return true; }
+ 
+ static void send_steno_chord(void) {
+-    if (send_steno_chord_user(mode, chord)) {
+-        switch (mode) {
+-            case STENO_MODE_BOLT:
+-                send_steno_state(BOLT_STATE_SIZE, false);
+-#ifdef VIRTSER_ENABLE
+-                virtser_send(0);  // terminating byte
+-#endif
+-                break;
+-            case STENO_MODE_GEMINI:
+-                chord[0] |= 0x80;  // Indicate start of packet
+-                send_steno_state(GEMINI_STATE_SIZE, true);
+-                break;
+-        }
++    if (send_steno_chord_user(STENO_MODE_GEMINI, chord)) {
++        chord[0] |= 0x80;  // Indicate start of packet
++        send_steno_state(GEMINI_STATE_SIZE, true);
+     }
+     steno_clear_state();
+ }
+@@ -124,17 +104,6 @@ uint8_t *steno_get_state(void) { return &state[0]; }
+ 
+ uint8_t *steno_get_chord(void) { return &chord[0]; }
+ 
+-static bool update_state_bolt(uint8_t key, bool press) {
+-    uint8_t boltcode = pgm_read_byte(boltmap + key);
+-    if (press) {
+-        state[TXB_GET_GROUP(boltcode)] |= boltcode;
+-        chord[TXB_GET_GROUP(boltcode)] |= boltcode;
+-    } else {
+-        state[TXB_GET_GROUP(boltcode)] &= ~boltcode;
+-    }
+-    return false;
+-}
+-
+ static bool update_state_gemini(uint8_t key, bool press) {
+     int     idx = key / 7;
+     uint8_t bit = 1 << (6 - (key % 7));
+@@ -171,16 +140,9 @@ bool process_steno(uint16_t keycode, keyrecord_t *record) {
+             if (!process_steno_user(keycode, record)) {
+                 return false;
+             }
+-            switch (mode) {
+-                case STENO_MODE_BOLT:
+-                    update_state_bolt(keycode - QK_STENO, IS_PRESSED(record->event));
+-                    break;
+-                case STENO_MODE_GEMINI:
+-                    update_state_gemini(keycode - QK_STENO, IS_PRESSED(record->event));
+-                    break;
+-            }
++            update_state_gemini(keycode - QK_STENO, IS_PRESSED(record->event));
+             // allow postprocessing hooks
+-            if (postprocess_steno_user(keycode, record, mode, chord, pressed)) {
++            if (postprocess_steno_user(keycode, record, STENO_MODE_GEMINI, chord, pressed)) {
+                 if (IS_PRESSED(record->event)) {
+                     ++pressed;
+                 } else {

keyboards/noll/ecosteno/keymaps/default/keymap.c

@@ -469,8 +469,8 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 void matrix_init_user(void) {
   steno_set_mode(STENO_MODE_BOLT); // STENO_MODE_GEMINI or STENO_MODE_BOLT
   //steno_set_mode(STENO_MODE_GEMINI);
-  // STENO_MODE_GEMINI only works if you remove all references to STENO_MODE_BOLT and then some in QMK.
-  // This is a QMK problem
+  // STENO_MODE_GEMINI only works if you remove references to TX Bolt in QMK
+  // follow ecosteno-geminipr.diff to do this (thanks to dnaq in the Plover discord)
 };
 
 layer_state_t layer_state_set_user(layer_state_t state) {

keyboards/noll/ecosteno/readme.md

@@ -15,4 +15,8 @@ Flashing example for this keyboard:
 
     dfu-util.exe -d 1eaf:0003 -a 2 -D "noll_ecosteno_default.bin"
 
-See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs). You might still need more info (WIP)
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs). 
+
+[Here's a quick video demonstrating how to flash firmware onto the ecosteno](https://youtu.be/dqeZ40PPEW4)
+
+The steno protocol currently included in this project is TX Bolt. I'm not entirely sure why getting Gemini PR to work isn't as simple as changing steno_set_mode(STENO_MODE_GEMINI) in keymap.c, but for now, if you want to compile ecosteno firmware that works with Gemini PR, you'll need to remove some references to TX Bolt by following ecosteno-geminipr.diff in EcoSteno-Firmware/keyboards/noll/ (thanks to dnaq in the Plover discord).