Support switch touching

main/drivers/bottom_half.cpp

@@ -5,16 +5,19 @@ static const char *TAG = "bottom_half";
 static uint16_t keypad_state;
 static uint8_t button_state;
 static uint8_t switch_state;
+static uint8_t switch_touch_state;
 static uint8_t touch_state;
 
 static uint16_t keypad_pressed;
 static uint8_t button_pressed;
 static uint8_t switch_flipped_up;
+static uint8_t switch_touch_pressed;
 static uint8_t touch_pressed;
 
 static uint16_t keypad_released;
 static uint8_t button_released;
 static uint8_t switch_flipped_down;
+static uint8_t switch_touch_released;
 static uint8_t touch_released;
 
 /// read buffer
@@ -77,8 +80,9 @@ static void receive_keypad(void) {
 static void receive_button_switch(void) {
     uint8_t reg = 3;
     ESP_ERROR_CHECK_WITHOUT_ABORT(i2c_master_write_read_device(BOTTOM_I2C_NUM, BOTTOM_I2C_ADDR, &reg, 1, buf, 2, (100 / portTICK_PERIOD_MS)));
-    uint8_t new_button_state = buf[1];
-    uint8_t new_switch_state = buf[0];
+    uint8_t new_button_state = buf[1] & 0xF;
+    uint8_t new_switch_state = (~buf[0]) & 0xF;
+    uint8_t new_switch_touch_state = (buf[1] >> 4) & 0xF;
 
     // button
     uint8_t just_pressed = new_button_state & ~button_state;
@@ -90,13 +94,22 @@ static void receive_button_switch(void) {
     button_state = new_button_state;
 
     // switch
-    uint8_t just_flipped_down = new_switch_state & ~switch_state;
-    switch_flipped_down |= just_flipped_down;
-
-    uint8_t just_flipped_up = ~new_switch_state & switch_state;
+    uint8_t just_flipped_up = new_switch_state & ~switch_state;
     switch_flipped_up |= just_flipped_up;
+
+    uint8_t just_flipped_down = ~new_switch_state & switch_state;
+    switch_flipped_down |= just_flipped_down;
     
     switch_state = new_switch_state;
+
+    // switch touch
+    uint8_t touch_just_pressed = new_switch_touch_state & ~switch_touch_state;
+    switch_touch_pressed |= touch_just_pressed;
+
+    uint8_t touch_just_released = ~new_switch_touch_state & switch_touch_state;
+    switch_touch_released |= touch_just_released;
+
+    switch_touch_state = new_switch_touch_state;
 }
 
 static void receive_touch(void) {
@@ -275,11 +288,21 @@ bool get_flipped_switch(SwitchKey* switch_) {
     }
     return false;
 }
-
 uint8_t get_switch_state() {
-    return (uint8_t)(~switch_state & 0xF);
+    return switch_state;
 }
 
+bool get_switch_touch_pressed(SwitchKey* switch_) {
+    return _take_switch(switch_, &switch_touch_pressed);
+}
+bool get_switch_touch_released(SwitchKey* switch_) {
+    return _take_switch(switch_, &switch_touch_released);
+}
+uint8_t get_switch_touch_state(){
+    return switch_touch_state;
+}
+
+
 bool get_touch_state(void) {
     return touch_state;
 }

main/drivers/bottom_half.h

@@ -73,6 +73,8 @@ bool get_released_keypad(KeypadKey* kp);
 char char_of_keypad_key(KeypadKey kp);
 // TODO: add a get_keypad state?
 
+
+// TODO: rename these to get_button_pressed.
 /// @brief Gets the button that was just pressed (if any)
 /// @param button an OUT variable for the button that was pressed (if any)
 /// @return true if there was a button that was just pressed
@@ -103,6 +105,19 @@ bool get_flipped_switch(SwitchKey* switch_);
 /// @return Bitflags for s1-s4.
 uint8_t get_switch_state();
 
+/// @brief Gets the switch that was just touched (if any)
+/// @param switch_ an OUT variable for the switch that was touched (if any)
+/// @return true if there was a switch that was just touched
+bool get_switch_touch_pressed(SwitchKey* switch_);
+/// @brief Gets the switch that was just un-touched (if any)
+/// @param switch_ an OUT variable for the switch that was un-touched (if any)
+/// @return true if there was a switch that was just un-touched
+bool get_switch_touch_released(SwitchKey* switch_);
+/// @brief Gets the raw state of the touched switches s1-s4 as bitflags.
+///  S1 is MSB and S4 is LSB.
+/// @return Bitflags for the touched state of S1-S4.
+uint8_t get_switch_touch_state();
+
 /// @brief Gets the state of the fingerprint sensor
 /// @return true if the fingerprint sensor is touched
 bool get_touch_state();