291 lines
8.3 KiB
C
291 lines
8.3 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file : main.c
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* @brief : Main program body
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2025 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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#include "can.h"
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#include "usb_device.h"
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#include "mainboard_usb.h"
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#include "gpio.h"
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/* Private includes ----------------------------------------------------------*/
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/* USER CODE BEGIN Includes */
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/* USER CODE END Includes */
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/* Private typedef -----------------------------------------------------------*/
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/* USER CODE BEGIN PTD */
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typedef struct{
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uint8_t MODIFIER;
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uint8_t RESERVED;
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uint8_t KEYPRESS[12];
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} HIDReportNKRO;
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typedef struct{
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uint8_t MODIFIER;
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uint8_t RESERVED;
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uint8_t KEYPRESS[6]; // for 6 Key Rollover, changed index to 6.
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} HIDReport6KRO;
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typedef struct{
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GPIO_TypeDef* PORT;
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uint16_t PIN;
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} KbdPins;
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extern USBD_HandleTypeDef hUsbDeviceFS;
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/* USER CODE END PTD */
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/* Private define ------------------------------------------------------------*/
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/* USER CODE BEGIN PD */
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#define ROWS 2
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#define COLS 2
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/* USER CODE END PD */
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/* Private macro -------------------------------------------------------------*/
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/* USER CODE BEGIN PM */
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/* USER CODE END PM */
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/* Private variables ---------------------------------------------------------*/
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/* USER CODE BEGIN PV */
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//Keymap
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uint8_t matrix[ROWS][COLS] = {
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{KEY_M, KEY_K},
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{KEY_I, KEY_U}
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};
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//Pins For the column {PORT, PIN}
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KbdPins row_pins[ROWS] = {
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{GPIOC, GPIO_PIN_6},
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{GPIOB, GPIO_PIN_15}
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};
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KbdPins col_pins[COLS] = {
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{GPIOB, GPIO_PIN_14},
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{GPIOB, GPIO_PIN_13}
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};
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//Report - This what get sent to the USB
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HIDReportNKRO REPORT = {0};
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CAN_RxHeaderTypeDef RxHeader;
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uint8_t RxData[8];
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/* USER CODE END PV */
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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/* USER CODE BEGIN PFP */
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void addHIDReport(uint8_t usageID, uint8_t isPressed);
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/* USER CODE END PFP */
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/* Private user code ---------------------------------------------------------*/
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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/**
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* @brief The application entry point.
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* @retval int
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*/
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int main(void)
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{
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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/* MCU Configuration--------------------------------------------------------*/
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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HAL_Init();
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/* USER CODE BEGIN Init */
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/* USER CODE END Init */
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/* Configure the system clock */
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SystemClock_Config();
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/* USER CODE BEGIN SysInit */
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/* USER CODE END SysInit */
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/* Initialize all configured peripherals */
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MX_GPIO_Init();
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MX_CAN1_Init();
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MX_USB_DEVICE_Init();
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HAL_Delay(200);
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/* USER CODE BEGIN 2 */
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HAL_CAN_Start(&hcan1);
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HAL_CAN_ActivateNotification(&hcan1, CAN_IT_RX_FIFO0_MSG_PENDING);
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HAL_Delay(50);
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while (1)
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{
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//TODO: FIX ME
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//Keycode Scan
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// Clear keypresses at the start of each scan for 6 key rollover
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/* USER CODE END WHILE */
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// for(int col = 0; col < COLS; col++){
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// HAL_GPIO_WritePin(col_pins[col].PORT, col_pins[col].PIN, GPIO_PIN_SET);
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// HAL_Delay(1);
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// for(int row = 0; row < ROWS; row++){
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// if(HAL_GPIO_ReadPin(row_pins[row].PORT, row_pins[row].PIN)){
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// addHIDReport(matrix[row][col], 1);
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// }
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// }
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// HAL_GPIO_WritePin(col_pins[col].PORT, col_pins[col].PIN, GPIO_PIN_RESET);
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// }
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addHIDReport(KEY_A, 1);
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USBD_HID_SendReport(&hUsbDeviceFS, (uint8_t*)&REPORT, sizeof(REPORT));
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HAL_Delay(500);
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addHIDReport(KEY_A, 0);
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USBD_HID_SendReport(&hUsbDeviceFS, (uint8_t*)&REPORT, sizeof(REPORT));
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HAL_Delay(500);
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/* USER CODE BEGIN 3 */
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}
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/* USER CODE END 3 */
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}
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void HAL_CAN_RxFifo0MsgPendingCallback(CAN_HandleTypeDef *hcan)
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{
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HAL_CAN_GetRxMessage(hcan, CAN_RX_FIFO0, &RxHeader, RxData);
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addHIDReport(RxData[0], (RxData[1] & 0x01) ? 1 : 0);
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}
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/**
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* @brief System Clock Configuration
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* @retval None
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*/
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void SystemClock_Config(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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/** Configure the main internal regulator output voltage
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*/
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__HAL_RCC_PWR_CLK_ENABLE();
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);
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/** Initializes the RCC Oscillators according to the specified parameters
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* in the RCC_OscInitTypeDef structure.
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*/
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 4;
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RCC_OscInitStruct.PLL.PLLN = 72;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = 3;
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RCC_OscInitStruct.PLL.PLLR = 2;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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Error_Handler();
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}
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/** Initializes the CPU, AHB and APB buses clocks
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*/
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
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|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
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{
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Error_Handler();
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}
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}
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/* USER CODE BEGIN 4 */
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//Converts UsageID to NKRO bit field and add it to the report
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void addHIDReport(uint8_t usageID, uint8_t isPressed){
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if(usageID < 0x04 || usageID > 0x73) return; //Usage ID is out of bounds
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uint16_t bit_index = usageID - 0x04; //Offset, UsageID starts with 0x04. Gives us the actual value of the bit
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uint8_t byte_index = bit_index/8; //Calculates which byte in the REPORT array
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uint8_t bit_offset = bit_index%8; //Calculates which bits in the REPORT[byte_index] should be set/unset
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if(isPressed){
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REPORT.KEYPRESS[byte_index] |= (1 << bit_offset);
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}else{
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REPORT.KEYPRESS[byte_index] &= ~(1 << bit_offset);
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}
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}
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// 6 KEY ROLLOVER CODE STRUCTURE
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/*
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if (usageID < 0x04 || usageID > 0x73) return;
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int i, empty = -1;
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if (isPressed) {
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for (i = 0; i < 6; i++) {
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if (REPORT.KEYPRESS[i] == usageID) return; // Already present
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if (REPORT.KEYPRESS[i] == 0 && empty == -1) empty = i;
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}
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if (empty != -1) {
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REPORT.KEYPRESS[empty] = usageID;
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}
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// If no empty slot, ignore (6KRO: only 6 keys allowed)
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} else {
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// Remove from the array when released
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for (i = 0; i < 6; i++) {
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if (REPORT.KEYPRESS[i] == usageID) {
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REPORT.KEYPRESS[i] = 0;
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}
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}
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}
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*/
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/* USER CODE END 4 */
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/**
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* @brief This function is executed in case of error occurrence.
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* @retval None
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*/
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void Error_Handler(void)
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{
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/* USER CODE BEGIN Error_Handler_Debug */
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/* User can add his own implementation to report the HAL error return state */
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__disable_irq();
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while (1)
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{
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}
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/* USER CODE END Error_Handler_Debug */
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* USER CODE BEGIN 6 */
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* USER CODE END 6 */
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}
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#endif /* USE_FULL_ASSERT */
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