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1. STM32CubeMX 설정
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PA1 Output 설정한 이유는  제가 쓰는 JK 에서 구매한 Dragonboard 에서의 회로도에서 PA1으로 ON/OFF 하는 기능이 추가 되어 있어서 이걸 High 시켜줘야 USB 가 작동 됩니다. 보통은 그냥 PA11 PA12만 연결하면 됩니다. 이렇게 연결하신 분들은 PA1 설정 안하셔도 됩니다.
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2. main.c
#include "main.h"
#include "stm32f1xx_hal.h"
#include "usb_device.h"
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
UART_HandleTypeDef huart1;
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
static void GetPointerData(uint8_t *pbuf);
/* USER CODE END PFP */
/* USER CODE BEGIN 0 */
int fputc(int ch, FILE *f)
{
uint8_t temp[1]={ch};
HAL_UART_Transmit(&huart1, temp, 1, 2);
return(ch);
}
/* USER CODE END 0 */
int main(void)
{
/* USER CODE BEGIN 1 */
uint8_t HID_Buffer[4];
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USB_DEVICE_Init();
MX_USART1_UART_Init();
/* USER CODE BEGIN 2 */
HAL_StatusTypeDef R_stat;
uint8_t UsartData[1];
GetPointerData(HID_Buffer);
printf("rs232 test\r\n");
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
R_stat = HAL_UART_Receive(&huart1,UsartData,1,5000);
if(R_stat == HAL_OK){
printf("%c\r\n",UsartData[0]);
if(UsartData[0]=='u'){
HID_Buffer[1]=0;
HID_Buffer[2]=-100;
USBD_HID_SendReport(&hUsbDeviceFS, HID_Buffer, 4);
}
else if(UsartData[0]=='m'){
HID_Buffer[1]=0;
HID_Buffer[2]=100;
USBD_HID_SendReport(&hUsbDeviceFS, HID_Buffer, 4);
}
else if(UsartData[0]=='h'){
HID_Buffer[1]=-100;
HID_Buffer[2]=0;
USBD_HID_SendReport(&hUsbDeviceFS, HID_Buffer, 4);
}
else if(UsartData[0]=='k'){
HID_Buffer[1]=100;
HID_Buffer[2]=0;
USBD_HID_SendReport(&hUsbDeviceFS, HID_Buffer, 4);
}
}
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/** System Clock Configuration
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInit;
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL_DIV1_5;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure the Systick interrupt time
*/
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
/**Configure the Systick
*/
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
/* USART1 init function */
static void MX_USART1_UART_Init(void)
{
huart1.Instance = USART1;
huart1.Init.BaudRate = 115200;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
/** Configure pins as
* Analog
* Input
* Output
* EVENT_OUT
* EXTI
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOA_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_SET);
/*Configure GPIO pin : PA1 */
GPIO_InitStruct.Pin = GPIO_PIN_1;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
/* USER CODE BEGIN 4 */
static void GetPointerData(uint8_t *pbuf)
{
//static int8_t cnt = 0;
int8_t x = 0, y = 0 ;
pbuf[0] = 0;
pbuf[1] = x;
pbuf[2] = y;
pbuf[3] = 0;
}
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
void _Error_Handler(char * file, int line)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
while(1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/static void GetPointerData(uint8_t *pbuf);
=함수 선언
int fputc(int ch, FILE *f)
{
uint8_t temp[1]={ch};
HAL_UART_Transmit(&huart1, temp, 1, 2);
return(ch);
}
=printf 함수를 쓰기 위한 코드
uint8_t HID_Buffer[4];
=usb 초기값 받기 위한 변수
HAL_StatusTypeDef R_stat;
=통신 rx 상태 구조체
uint8_t UsartData[1];
=통신 값 받기 아스키코드
GetPointerData(HID_Buffer);
=버퍼에 초기값 쓰기
printf("rs232 test\r\n");
=통신 TEST
static void GetPointerData(uint8_t *pbuf)
{
//static int8_t cnt = 0;
int8_t x = 0, y = 0 ;
pbuf[0] = 0; //1: 왼쪽 클릭 2: 오론쪽클릭
pbuf[1] = x;
pbuf[2] = y;
pbuf[3] = 0;//휠
}
= 초기값 함수
3. 결과
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정상적으로 작동 하게 되면 키보드에서 u : 마우스 위로 이동 m : 마우스 아래로 이동 h : 마우스 왼쪽으로 이동 k : 마우스 오론쪽으로 이동 |
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