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Diffstat (limited to 'stmhal/usbd_cdc_interface.c')
| -rw-r--r-- | stmhal/usbd_cdc_interface.c | 461 |
1 files changed, 461 insertions, 0 deletions
diff --git a/stmhal/usbd_cdc_interface.c b/stmhal/usbd_cdc_interface.c new file mode 100644 index 0000000000..cb1c41f24f --- /dev/null +++ b/stmhal/usbd_cdc_interface.c @@ -0,0 +1,461 @@ +/**
+ ******************************************************************************
+ * @file USB_Device/CDC_Standalone/Src/usbd_cdc_interface.c
+ * @author MCD Application Team
+ * @version V1.0.1
+ * @date 26-February-2014
+ * @brief Source file for USBD CDC interface
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+ *
+ * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.st.com/software_license_agreement_liberty_v2
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_hal.h"
+#include "usbd_cdc_interface.h"
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+ * @{
+ */
+
+/** @defgroup USBD_CDC
+ * @brief usbd core module
+ * @{
+ */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+#define APP_RX_DATA_SIZE 2048
+#define APP_TX_DATA_SIZE 2048
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+USBD_CDC_LineCodingTypeDef LineCoding =
+ {
+ 115200, /* baud rate*/
+ 0x00, /* stop bits-1*/
+ 0x00, /* parity - none*/
+ 0x08 /* nb. of bits 8*/
+ };
+
+uint8_t UserRxBuffer[APP_RX_DATA_SIZE];/* Received Data over USB are stored in this buffer */
+uint8_t UserTxBuffer[APP_TX_DATA_SIZE];/* Received Data over UART (CDC interface) are stored in this buffer */
+uint32_t BuffLength;
+uint32_t UserTxBufPtrIn = 0;/* Increment this pointer or roll it back to
+ start address when data are received over USART */
+uint32_t UserTxBufPtrOut = 0; /* Increment this pointer or roll it back to
+ start address when data are sent over USB */
+
+/* UART handler declaration */
+UART_HandleTypeDef UartHandle;
+/* TIM handler declaration */
+TIM_HandleTypeDef TimHandle;
+/* USB handler declaration */
+extern USBD_HandleTypeDef hUSBDDevice;
+
+/* Private function prototypes -----------------------------------------------*/
+static int8_t CDC_Itf_Init (void);
+static int8_t CDC_Itf_DeInit (void);
+static int8_t CDC_Itf_Control (uint8_t cmd, uint8_t* pbuf, uint16_t length);
+static int8_t CDC_Itf_Receive (uint8_t* pbuf, uint32_t *Len);
+
+static void Error_Handler(void);
+static void ComPort_Config(void);
+//static void TIM_Config(void);
+
+USBD_CDC_ItfTypeDef USBD_CDC_fops =
+{
+ CDC_Itf_Init,
+ CDC_Itf_DeInit,
+ CDC_Itf_Control,
+ CDC_Itf_Receive
+};
+
+/* Private functions ---------------------------------------------------------*/
+
+/**
+ * @brief CDC_Itf_Init
+ * Initializes the CDC media low layer
+ * @param None
+ * @retval Result of the opeartion: USBD_OK if all operations are OK else USBD_FAIL
+ */
+static int8_t CDC_Itf_Init(void)
+{
+#if 0
+ /*##-1- Configure the UART peripheral ######################################*/
+ /* Put the USART peripheral in the Asynchronous mode (UART Mode) */
+ /* USART configured as follow:
+ - Word Length = 8 Bits
+ - Stop Bit = One Stop bit
+ - Parity = No parity
+ - BaudRate = 115200 baud
+ - Hardware flow control disabled (RTS and CTS signals) */
+ UartHandle.Instance = USARTx;
+ UartHandle.Init.BaudRate = 115200;
+ UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
+ UartHandle.Init.StopBits = UART_STOPBITS_1;
+ UartHandle.Init.Parity = UART_PARITY_NONE;
+ UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
+ UartHandle.Init.Mode = UART_MODE_TX_RX;
+
+ if(HAL_UART_Init(&UartHandle) != HAL_OK)
+ {
+ /* Initialization Error */
+ Error_Handler();
+ }
+
+ /*##-2- Put UART peripheral in IT reception process ########################*/
+ /* Any data received will be stored in "UserTxBuffer" buffer */
+ if(HAL_UART_Receive_IT(&UartHandle, (uint8_t *)UserTxBuffer, 1) != HAL_OK)
+ {
+ /* Transfer error in reception process */
+ Error_Handler();
+ }
+
+ /*##-3- Configure the TIM Base generation #################################*/
+ TIM_Config();
+
+ /*##-4- Start the TIM Base generation in interrupt mode ####################*/
+ /* Start Channel1 */
+ if(HAL_TIM_Base_Start_IT(&TimHandle) != HAL_OK)
+ {
+ /* Starting Error */
+ Error_Handler();
+ }
+#endif
+
+ /*##-5- Set Application Buffers ############################################*/
+ USBD_CDC_SetTxBuffer(&hUSBDDevice, UserTxBuffer, 0);
+ USBD_CDC_SetRxBuffer(&hUSBDDevice, UserRxBuffer);
+
+ return (USBD_OK);
+}
+
+/**
+ * @brief CDC_Itf_DeInit
+ * DeInitializes the CDC media low layer
+ * @param None
+ * @retval Result of the opeartion: USBD_OK if all operations are OK else USBD_FAIL
+ */
+static int8_t CDC_Itf_DeInit(void)
+{
+#if 0
+ /* DeInitialize the UART peripheral */
+ if(HAL_UART_DeInit(&UartHandle) != HAL_OK)
+ {
+ /* Initialization Error */
+ Error_Handler();
+ }
+#endif
+ return (USBD_OK);
+}
+
+/**
+ * @brief CDC_Itf_Control
+ * Manage the CDC class requests
+ * @param Cmd: Command code
+ * @param Buf: Buffer containing command data (request parameters)
+ * @param Len: Number of data to be sent (in bytes)
+ * @retval Result of the opeartion: USBD_OK if all operations are OK else USBD_FAIL
+ */
+static int8_t CDC_Itf_Control (uint8_t cmd, uint8_t* pbuf, uint16_t length)
+{
+ switch (cmd)
+ {
+ case CDC_SEND_ENCAPSULATED_COMMAND:
+ /* Add your code here */
+ break;
+
+ case CDC_GET_ENCAPSULATED_RESPONSE:
+ /* Add your code here */
+ break;
+
+ case CDC_SET_COMM_FEATURE:
+ /* Add your code here */
+ break;
+
+ case CDC_GET_COMM_FEATURE:
+ /* Add your code here */
+ break;
+
+ case CDC_CLEAR_COMM_FEATURE:
+ /* Add your code here */
+ break;
+
+ case CDC_SET_LINE_CODING:
+ LineCoding.bitrate = (uint32_t)(pbuf[0] | (pbuf[1] << 8) |\
+ (pbuf[2] << 16) | (pbuf[3] << 24));
+ LineCoding.format = pbuf[4];
+ LineCoding.paritytype = pbuf[5];
+ LineCoding.datatype = pbuf[6];
+
+ /* Set the new configuration */
+ ComPort_Config();
+ break;
+
+ case CDC_GET_LINE_CODING:
+ pbuf[0] = (uint8_t)(LineCoding.bitrate);
+ pbuf[1] = (uint8_t)(LineCoding.bitrate >> 8);
+ pbuf[2] = (uint8_t)(LineCoding.bitrate >> 16);
+ pbuf[3] = (uint8_t)(LineCoding.bitrate >> 24);
+ pbuf[4] = LineCoding.format;
+ pbuf[5] = LineCoding.paritytype;
+ pbuf[6] = LineCoding.datatype;
+
+ /* Add your code here */
+ break;
+
+ case CDC_SET_CONTROL_LINE_STATE:
+ /* Add your code here */
+ break;
+
+ case CDC_SEND_BREAK:
+ /* Add your code here */
+ break;
+
+ default:
+ break;
+ }
+
+ return (USBD_OK);
+}
+
+/**
+ * @brief TIM period elapsed callback
+ * @param htim: TIM handle
+ * @retval None
+ */
+void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
+{
+ uint32_t buffptr;
+ uint32_t buffsize;
+
+ if(UserTxBufPtrOut != UserTxBufPtrIn)
+ {
+ if(UserTxBufPtrOut > UserTxBufPtrIn) /* rollback */
+ {
+ buffsize = APP_RX_DATA_SIZE - UserTxBufPtrOut;
+ }
+ else
+ {
+ buffsize = UserTxBufPtrIn - UserTxBufPtrOut;
+ }
+
+ buffptr = UserTxBufPtrOut;
+
+ USBD_CDC_SetTxBuffer(&hUSBDDevice, (uint8_t*)&UserTxBuffer[buffptr], buffsize);
+
+ if(USBD_CDC_TransmitPacket(&hUSBDDevice) == USBD_OK)
+ {
+ UserTxBufPtrOut += buffsize;
+ if (UserTxBufPtrOut == APP_RX_DATA_SIZE)
+ {
+ UserTxBufPtrOut = 0;
+ }
+ }
+ }
+}
+
+/**
+ * @brief Rx Transfer completed callback
+ * @param huart: UART handle
+ * @retval None
+ */
+void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
+{
+ /* Increment Index for buffer writing */
+ UserTxBufPtrIn++;
+
+ /* To avoid buffer overflow */
+ if(UserTxBufPtrIn == APP_RX_DATA_SIZE)
+ {
+ UserTxBufPtrIn = 0;
+ }
+
+ /* Start another reception: provide the buffer pointer with offset and the buffer size */
+ HAL_UART_Receive_IT(huart, (uint8_t *)(UserTxBuffer + UserTxBufPtrIn), 1);
+}
+
+/**
+ * @brief CDC_Itf_DataRx
+ * Data received over USB OUT endpoint are sent over CDC interface
+ * through this function.
+ * @param Buf: Buffer of data to be transmitted
+ * @param Len: Number of data received (in bytes)
+ * @retval Result of the opeartion: USBD_OK if all operations are OK else USBD_FAIL
+ */
+static int8_t CDC_Itf_Receive(uint8_t* Buf, uint32_t *Len)
+{
+ HAL_UART_Transmit_DMA(&UartHandle, Buf, *Len);
+ return (USBD_OK);
+}
+
+/**
+ * @brief Tx Transfer completed callback
+ * @param huart: UART handle
+ * @retval None
+ */
+void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
+{
+ /* Initiate next USB packet transfer once UART completes transfer (transmitting data over Tx line) */
+ USBD_CDC_ReceivePacket(&hUSBDDevice);
+}
+
+/**
+ * @brief ComPort_Config
+ * Configure the COM Port with the parameters received from host.
+ * @param None.
+ * @retval None.
+ * @note When a configuration is not supported, a default value is used.
+ */
+static void ComPort_Config(void)
+{
+ if(HAL_UART_DeInit(&UartHandle) != HAL_OK)
+ {
+ /* Initialization Error */
+ Error_Handler();
+ }
+
+ /* set the Stop bit */
+ switch (LineCoding.format)
+ {
+ case 0:
+ UartHandle.Init.StopBits = UART_STOPBITS_1;
+ break;
+ case 2:
+ UartHandle.Init.StopBits = UART_STOPBITS_2;
+ break;
+ default :
+ UartHandle.Init.StopBits = UART_STOPBITS_1;
+ break;
+ }
+
+ /* set the parity bit*/
+ switch (LineCoding.paritytype)
+ {
+ case 0:
+ UartHandle.Init.Parity = UART_PARITY_NONE;
+ break;
+ case 1:
+ UartHandle.Init.Parity = UART_PARITY_ODD;
+ break;
+ case 2:
+ UartHandle.Init.Parity = UART_PARITY_EVEN;
+ break;
+ default :
+ UartHandle.Init.Parity = UART_PARITY_NONE;
+ break;
+ }
+
+ /*set the data type : only 8bits and 9bits is supported */
+ switch (LineCoding.datatype)
+ {
+ case 0x07:
+ /* With this configuration a parity (Even or Odd) must be set */
+ UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
+ break;
+ case 0x08:
+ if(UartHandle.Init.Parity == UART_PARITY_NONE)
+ {
+ UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
+ }
+ else
+ {
+ UartHandle.Init.WordLength = UART_WORDLENGTH_9B;
+ }
+
+ break;
+ default :
+ UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
+ break;
+ }
+
+ UartHandle.Init.BaudRate = LineCoding.bitrate;
+ UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
+ UartHandle.Init.Mode = UART_MODE_TX_RX;
+
+ if(HAL_UART_Init(&UartHandle) != HAL_OK)
+ {
+ /* Initialization Error */
+ Error_Handler();
+ }
+
+ /* Start reception: provide the buffer pointer with offset and the buffer size */
+ HAL_UART_Receive_IT(&UartHandle, (uint8_t *)(UserTxBuffer + UserTxBufPtrIn), 1);
+}
+
+/**
+ * @brief TIM_Config: Configure TIMx timer
+ * @param None.
+ * @retval None.
+ */
+#if 0
+static void TIM_Config(void)
+{
+ /* Set TIMx instance */
+ TimHandle.Instance = TIMx;
+
+ /* Initialize TIM3 peripheral as follow:
+ + Period = 10000 - 1
+ + Prescaler = ((SystemCoreClock/2)/10000) - 1
+ + ClockDivision = 0
+ + Counter direction = Up
+ */
+ TimHandle.Init.Period = (CDC_POLLING_INTERVAL*1000) - 1;
+ TimHandle.Init.Prescaler = 84-1;
+ TimHandle.Init.ClockDivision = 0;
+ TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
+ if(HAL_TIM_Base_Init(&TimHandle) != HAL_OK)
+ {
+ /* Initialization Error */
+ Error_Handler();
+ }
+}
+#endif
+
+/**
+ * @brief UART error callbacks
+ * @param UartHandle: UART handle
+ * @retval None
+ */
+void HAL_UART_ErrorCallback(UART_HandleTypeDef *UartHandle)
+{
+ /* Transfer error occured in reception and/or transmission process */
+ Error_Handler();
+}
+
+/**
+ * @brief This function is executed in case of error occurrence.
+ * @param None
+ * @retval None
+ */
+static void Error_Handler(void)
+{
+ /* Add your own code here */
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
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