diff options
| author | Damien | 2013-10-13 00:42:20 +0100 |
|---|---|---|
| committer | Damien | 2013-10-13 00:42:20 +0100 |
| commit | ed65605edc5c1376947a34723b9c750400b5a028 (patch) | |
| tree | d0317e867c4286ec7c889fc9ed18591a1d9990dd /stm/lib/usbd_cdc_vcp.c | |
| parent | 3ef4abb446dfcbdbc426a0921a33e0883607e677 (diff) | |
Inital commit of stm32f4xx framework.
Diffstat (limited to 'stm/lib/usbd_cdc_vcp.c')
| -rw-r--r-- | stm/lib/usbd_cdc_vcp.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/stm/lib/usbd_cdc_vcp.c b/stm/lib/usbd_cdc_vcp.c new file mode 100644 index 000000000..b8e2af2b5 --- /dev/null +++ b/stm/lib/usbd_cdc_vcp.c @@ -0,0 +1,219 @@ +/**
+ ******************************************************************************
+ * @file usbd_cdc_vcp.c
+ * @author MCD Application Team
+ * @version V1.1.0
+ * @date 19-March-2012
+ * @brief Generic media access Layer.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT 2012 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.
+ *
+ ******************************************************************************
+ */
+
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+#pragma data_alignment = 4
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_cdc_vcp.h"
+#include "usbd_cdc_conf.h"
+#include "std.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+LINE_CODING linecoding =
+ {
+ 115200, /* baud rate*/
+ 0x00, /* stop bits-1*/
+ 0x00, /* parity - none*/
+ 0x08 /* nb. of bits 8*/
+ };
+
+
+/* These are external variables imported from CDC core to be used for IN
+ transfer management. */
+extern uint8_t APP_Rx_Buffer []; /* Write CDC received data in this buffer.
+ These data will be sent over USB IN endpoint
+ in the CDC core functions. */
+extern uint32_t APP_Rx_ptr_in; /* Increment this pointer or roll it back to
+ start address when writing received data
+ in the buffer APP_Rx_Buffer. */
+
+/* Private function prototypes -----------------------------------------------*/
+static uint16_t VCP_Init (void);
+static uint16_t VCP_DeInit (void);
+static uint16_t VCP_Ctrl (uint32_t Cmd, uint8_t* Buf, uint32_t Len);
+static uint16_t VCP_DataTx (uint8_t* Buf, uint32_t Len);
+static uint16_t VCP_DataRx (uint8_t* Buf, uint32_t Len);
+
+CDC_IF_Prop_TypeDef VCP_fops =
+{
+ VCP_Init,
+ VCP_DeInit,
+ VCP_Ctrl,
+ VCP_DataTx,
+ VCP_DataRx
+};
+
+/* Private functions ---------------------------------------------------------*/
+/**
+ * @brief VCP_Init
+ * Initializes the Media on the STM32
+ * @param None
+ * @retval Result of the opeartion (USBD_OK in all cases)
+ */
+static uint16_t VCP_Init(void) {
+ return USBD_OK;
+}
+
+/**
+ * @brief VCP_DeInit
+ * DeInitializes the Media on the STM32
+ * @param None
+ * @retval Result of the opeartion (USBD_OK in all cases)
+ */
+static uint16_t VCP_DeInit(void)
+{
+
+ return USBD_OK;
+}
+
+
+/**
+ * @brief VCP_Ctrl
+ * 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 in all cases)
+ */
+static uint16_t VCP_Ctrl (uint32_t Cmd, uint8_t* Buf, uint32_t Len)
+{
+ switch (Cmd)
+ {
+ case SEND_ENCAPSULATED_COMMAND:
+ /* Not needed for this driver */
+ break;
+
+ case GET_ENCAPSULATED_RESPONSE:
+ /* Not needed for this driver */
+ break;
+
+ case SET_COMM_FEATURE:
+ /* Not needed for this driver */
+ break;
+
+ case GET_COMM_FEATURE:
+ /* Not needed for this driver */
+ break;
+
+ case CLEAR_COMM_FEATURE:
+ /* Not needed for this driver */
+ break;
+
+ case SET_LINE_CODING:
+ /*
+ linecoding.bitrate = (uint32_t)(Buf[0] | (Buf[1] << 8) | (Buf[2] << 16) | (Buf[3] << 24));
+ linecoding.format = Buf[4];
+ linecoding.paritytype = Buf[5];
+ linecoding.datatype = Buf[6];
+ // Set the new configuration
+ VCP_COMConfig(OTHER_CONFIG);
+ */
+ break;
+
+ case GET_LINE_CODING:
+ /*
+ Buf[0] = (uint8_t)(linecoding.bitrate);
+ Buf[1] = (uint8_t)(linecoding.bitrate >> 8);
+ Buf[2] = (uint8_t)(linecoding.bitrate >> 16);
+ Buf[3] = (uint8_t)(linecoding.bitrate >> 24);
+ Buf[4] = linecoding.format;
+ Buf[5] = linecoding.paritytype;
+ Buf[6] = linecoding.datatype;
+ */
+ Buf[0] = 0;
+ Buf[1] = 0;
+ Buf[2] = 0;
+ Buf[3] = 0;
+ Buf[4] = 0;
+ Buf[5] = 0;
+ Buf[6] = 0;
+ break;
+
+ case SET_CONTROL_LINE_STATE:
+ /* Not needed for this driver */
+ break;
+
+ case SEND_BREAK:
+ /* Not needed for this driver */
+ break;
+
+ default:
+ break;
+ }
+
+ return USBD_OK;
+}
+
+/**
+ * @brief VCP_DataTx
+ * CDC received data to be send over USB IN endpoint are managed in
+ * this function.
+ * @param Buf: Buffer of data to be sent
+ * @param Len: Number of data to be sent (in bytes)
+ * @retval Result of the opeartion: USBD_OK if all operations are OK else VCP_FAIL
+ */
+static uint16_t VCP_DataTx (uint8_t* Buf, uint32_t Len)
+{
+ for (int i = 0; i < Len; i++) {
+ APP_Rx_Buffer[APP_Rx_ptr_in] = Buf[i];
+ APP_Rx_ptr_in++;
+
+ /* To avoid buffer overflow */
+ if(APP_Rx_ptr_in == APP_RX_DATA_SIZE) {
+ APP_Rx_ptr_in = 0;
+ }
+ }
+
+ return USBD_OK;
+}
+
+/**
+ * @brief VCP_DataRx
+ * Data received over USB OUT endpoint are sent over CDC interface
+ * through this function.
+ *
+ * @note
+ * This function will block any OUT packet reception on USB endpoint
+ * untill exiting this function. If you exit this function before transfer
+ * is complete on CDC interface (ie. using DMA controller) it will result
+ * in receiving more data while previous ones are still not sent.
+ *
+ * @param Buf: Buffer of data to be received
+ * @param Len: Number of data received (in bytes)
+ * @retval Result of the opeartion: USBD_OK if all operations are OK else VCP_FAIL
+ */
+static uint16_t VCP_DataRx (uint8_t* Buf, uint32_t Len) {
+ printf("%.*s", (int)Len, Buf);
+ return USBD_OK;
+}
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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