4key miku keyboard with nkro

This commit is contained in:
2025-07-01 15:13:32 -07:00
parent 3ecab0344c
commit 4caceb3617
3 changed files with 171 additions and 39 deletions

View File

@@ -46,6 +46,141 @@ extern "C" {
/* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN EM */
// Modifier Keys
#define KEY_LEFT_CTRL 0xE0
#define KEY_LEFT_SHIFT 0xE1
#define KEY_LEFT_ALT 0xE2
#define KEY_LEFT_GUI 0xE3
#define KEY_RIGHT_CTRL 0xE4
#define KEY_RIGHT_SHIFT 0xE5
#define KEY_RIGHT_ALT 0xE6
#define KEY_RIGHT_GUI 0xE7
// Regular Keys (Usage ID 0x040x73)
#define KEY_A 0x04
#define KEY_B 0x05
#define KEY_C 0x06
#define KEY_D 0x07
#define KEY_E 0x08
#define KEY_F 0x09
#define KEY_G 0x0A
#define KEY_H 0x0B
#define KEY_I 0x0C
#define KEY_J 0x0D
#define KEY_K 0x0E
#define KEY_L 0x0F
#define KEY_M 0x10
#define KEY_N 0x11
#define KEY_O 0x12
#define KEY_P 0x13
#define KEY_Q 0x14
#define KEY_R 0x15
#define KEY_S 0x16
#define KEY_T 0x17
#define KEY_U 0x18
#define KEY_V 0x19
#define KEY_W 0x1A
#define KEY_X 0x1B
#define KEY_Y 0x1C
#define KEY_Z 0x1D
#define KEY_1 0x1E
#define KEY_2 0x1F
#define KEY_3 0x20
#define KEY_4 0x21
#define KEY_5 0x22
#define KEY_6 0x23
#define KEY_7 0x24
#define KEY_8 0x25
#define KEY_9 0x26
#define KEY_0 0x27
#define KEY_ENTER 0x28
#define KEY_ESC 0x29
#define KEY_BACKSPACE 0x2A
#define KEY_TAB 0x2B
#define KEY_SPACE 0x2C
#define KEY_MINUS 0x2D
#define KEY_EQUAL 0x2E
#define KEY_LEFT_BRACKET 0x2F
#define KEY_RIGHT_BRACKET 0x30
#define KEY_BACKSLASH 0x31
#define KEY_NON_US_HASH 0x32
#define KEY_SEMICOLON 0x33
#define KEY_APOSTROPHE 0x34
#define KEY_GRAVE 0x35
#define KEY_COMMA 0x36
#define KEY_PERIOD 0x37
#define KEY_SLASH 0x38
#define KEY_CAPS_LOCK 0x39
// Function Keys
#define KEY_F1 0x3A
#define KEY_F2 0x3B
#define KEY_F3 0x3C
#define KEY_F4 0x3D
#define KEY_F5 0x3E
#define KEY_F6 0x3F
#define KEY_F7 0x40
#define KEY_F8 0x41
#define KEY_F9 0x42
#define KEY_F10 0x43
#define KEY_F11 0x44
#define KEY_F12 0x45
#define KEY_PRINT_SCREEN 0x46
#define KEY_SCROLL_LOCK 0x47
#define KEY_PAUSE 0x48
// Navigation Keys
#define KEY_INSERT 0x49
#define KEY_HOME 0x4A
#define KEY_PAGE_UP 0x4B
#define KEY_DELETE 0x4C
#define KEY_END 0x4D
#define KEY_PAGE_DOWN 0x4E
#define KEY_RIGHT_ARROW 0x4F
#define KEY_LEFT_ARROW 0x50
#define KEY_DOWN_ARROW 0x51
#define KEY_UP_ARROW 0x52
// Keypad
#define KEY_NUM_LOCK 0x53
#define KEYPAD_SLASH 0x54
#define KEYPAD_ASTERISK 0x55
#define KEYPAD_MINUS 0x56
#define KEYPAD_PLUS 0x57
#define KEYPAD_ENTER 0x58
#define KEYPAD_1 0x59
#define KEYPAD_2 0x5A
#define KEYPAD_3 0x5B
#define KEYPAD_4 0x5C
#define KEYPAD_5 0x5D
#define KEYPAD_6 0x5E
#define KEYPAD_7 0x5F
#define KEYPAD_8 0x60
#define KEYPAD_9 0x61
#define KEYPAD_0 0x62
#define KEYPAD_DOT 0x63
// Misc/Non-US
#define KEY_NON_US_BACKSLASH 0x64
#define KEY_APPLICATION 0x65
#define KEY_POWER 0x66
#define KEYPAD_EQUAL 0x67
#define KEY_F13 0x68
#define KEY_F14 0x69
#define KEY_F15 0x6A
#define KEY_F16 0x6B
#define KEY_F17 0x6C
#define KEY_F18 0x6D
#define KEY_F19 0x6E
#define KEY_F20 0x6F
#define KEY_F21 0x70
#define KEY_F22 0x71
#define KEY_F23 0x72
#define KEY_F24 0x73
/* USER CODE END EM */

View File

@@ -56,20 +56,20 @@ void MX_GPIO_Init(void)
/*Configure GPIO pins : PB13 PB14 */
GPIO_InitStruct.Pin = GPIO_PIN_13|GPIO_PIN_14;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/*Configure GPIO pin : PB15 */
GPIO_InitStruct.Pin = GPIO_PIN_15;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/*Configure GPIO pin : PC6 */
GPIO_InitStruct.Pin = GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
}

View File

@@ -33,21 +33,14 @@
typedef struct{
uint8_t MODIFIER;
uint8_t RESERVED;
uint8_t KEYSTATUS[13];
uint8_t KEYPRESS[13];
} HIDReport;
typedef struct{
uint16_t PORT;
GPIO_TypeDef* PORT;
uint16_t PIN;
} KbdPins;
typedef struct{
uint8_t PREV; //Previous State
uint8_t CURR; //Current State
uint8_t KEYCODE;
} Key;
extern USBD_HandleTypeDef hUsbDeviceFS;
/* USER CODE END PTD */
@@ -65,9 +58,9 @@ extern USBD_HandleTypeDef hUsbDeviceFS;
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
Key matrix[ROWS][COLS] = {
{{0,0,0x01},{0,0,0x0C}},
{{0,0,0x0E},{0,0,0x18}},
uint8_t matrix[ROWS][COLS] = {
{KEY_M, KEY_K},
{KEY_I, KEY_U}
};
KbdPins row_pins[ROWS] = {
{GPIOC, GPIO_PIN_6},
@@ -77,12 +70,13 @@ KbdPins col_pins[COLS] = {
{GPIOB, GPIO_PIN_14},
{GPIOB, GPIO_PIN_13}
};
HIDReport REPORT = {0,0,0,0,0,0,0,0};
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
void addHIDReport(uint8_t usageID, uint8_t isPressed);
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
@@ -98,8 +92,6 @@ int main(void)
{
/* USER CODE BEGIN 1 */
HIDReport report = {0,0,0,0,0,0,0,0};
uint8_t report_buff[] = {0,0,0,0,0,0};
/* USER CODE END 1 */
@@ -131,33 +123,26 @@ int main(void)
/* USER CODE BEGIN WHILE */
while (1)
{
//Keycode Scan
// for(int col = 0; col < COLS; col++){
// HAL_GPIO_WritePin(col_pins[col].PORT, col_pins[col].PIN, GPIO_PIN_SET);
// for(int row = 0; row < ROWS; row++){
// uint8_t state = HAL_GPIO_ReadPin(row_pins[row].PORT, col_pins[row].PIN);
// if(state != matrix[row][col].PREV){
// matrix[row][col].PREV = matrix[row][col].CURR;
// matrix[row][col].CURR = state;
// if(state){
// //Put into the buffer
// if(report_buff)
// }
// }
// }
// }
/* USER CODE END WHILE */
report.KEYSTATUS[0] = 0x01;
USBD_HID_SendReport(&hUsbDeviceFS, (uint8_t*)&report, sizeof(report));
HAL_Delay(1000);
for(int col = 0; col < COLS; col++){
HAL_GPIO_WritePin(col_pins[col].PORT, col_pins[col].PIN, GPIO_PIN_SET);
HAL_Delay(1);
for(int row = 0; row < ROWS; row++){
if(HAL_GPIO_ReadPin(row_pins[row].PORT, row_pins[row].PIN)){
addHIDReport(matrix[row][col], 1);
}else{
addHIDReport(matrix[row][col], 0);
}
}
HAL_GPIO_WritePin(col_pins[col].PORT, col_pins[col].PIN, GPIO_PIN_RESET);
}
USBD_HID_SendReport(&hUsbDeviceFS, (uint8_t*)&REPORT, sizeof(REPORT));
HAL_Delay(20);
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
@@ -205,7 +190,19 @@ void SystemClock_Config(void)
}
/* USER CODE BEGIN 4 */
//Converts UsageID to NKRO bit field and add it to the report
void addHIDReport(uint8_t usageID, uint8_t isPressed){
if(usageID < 0x04 || usageID > 0x73) return; //Usage ID is out of bounds
uint16_t bit_index = usageID - 0x04; //Offset, UsageID starts with 0x04. Gives us the actual value of the bit
uint8_t byte_index = bit_index/8; //Calculates which byte in the REPORT array
uint8_t bit_offset = bit_index%8; //Calculates which bits in the REPORT[byte_index] should be set/unset
if(isPressed){
REPORT.KEYPRESS[byte_index] |= (1 << bit_offset);
}else{
REPORT.KEYPRESS[byte_index] &= ~(1 << bit_offset);
}
}
/* USER CODE END 4 */
/**