stmhal: Add "CDC" option to pyb.usb_mode, for CDC device only.

1 files changed, 192 insertions, 0 deletions

diff --git a/stmhal/usbd_desc.c b/stmhal/usbd_desc.c
new file mode 100644
index 000000000..c893b4c66
--- /dev/null
+++ b/stmhal/usbd_desc.c
@@ -0,0 +1,192 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ */
+
+/**
+  ******************************************************************************
+  * @file    USB_Device/CDC_Standalone/Src/usbd_desc.c
+  * @author  MCD Application Team
+  * @version V1.0.1
+  * @date    26-February-2014
+  * @brief   This file provides the USBD descriptors and string formating method.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; 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.
+  *
+  ******************************************************************************
+  */
+
+#include "usbd_core.h"
+#include "usbd_desc.h"
+#include "usbd_conf.h"
+
+// So we don't clash with existing ST boards, we use the unofficial FOSS VID.
+// This needs a proper solution.
+#define USBD_VID                      0xf055
+#define USBD_PID                      0x9800
+#define USBD_LANGID_STRING            0x409
+#define USBD_MANUFACTURER_STRING      "Micro Python"
+#define USBD_PRODUCT_HS_STRING        "Pyboard Virtual Comm Port in HS Mode"
+#define USBD_SERIALNUMBER_HS_STRING   "000000000010"
+#define USBD_PRODUCT_FS_STRING        "Pyboard Virtual Comm Port in FS Mode"
+#define USBD_SERIALNUMBER_FS_STRING   "000000000011"
+#define USBD_CONFIGURATION_HS_STRING  "Pyboard Config"
+#define USBD_INTERFACE_HS_STRING      "Pyboard Interface"
+#define USBD_CONFIGURATION_FS_STRING  "Pyboard Config"
+#define USBD_INTERFACE_FS_STRING      "Pyboard Interface"
+
+// USB Standard Device Descriptor
+// needs to be in RAM because we modify the VID and PID
+__ALIGN_BEGIN static uint8_t hUSBDDeviceDesc[USB_LEN_DEV_DESC] __ALIGN_END = {
+    0x12,                       // bLength
+    USB_DESC_TYPE_DEVICE,       // bDescriptorType
+    0x00,                       // bcdUSB
+    0x02,
+    0xef,                       // bDeviceClass: Miscellaneous Device Class
+    0x02,                       // bDeviceSubClass: Common Class
+    0x01,                       // bDeviceProtocol: Interface Association Descriptor
+    USB_MAX_EP0_SIZE,           // bMaxPacketSize
+    LOBYTE(USBD_VID),           // idVendor
+    HIBYTE(USBD_VID),           // idVendor
+    LOBYTE(USBD_PID),           // idVendor
+    HIBYTE(USBD_PID),           // idVendor
+    0x00,                       // bcdDevice rel. 2.00
+    0x02,
+    USBD_IDX_MFC_STR,           // Index of manufacturer string
+    USBD_IDX_PRODUCT_STR,       // Index of product string
+    USBD_IDX_SERIAL_STR,        // Index of serial number string
+    USBD_MAX_NUM_CONFIGURATION  // bNumConfigurations
+};
+
+__ALIGN_BEGIN static uint8_t USBD_LangIDDesc[USB_LEN_LANGID_STR_DESC] __ALIGN_END = {
+    USB_LEN_LANGID_STR_DESC,
+    USB_DESC_TYPE_STRING,
+    LOBYTE(USBD_LANGID_STRING),
+    HIBYTE(USBD_LANGID_STRING),
+};
+
+__ALIGN_BEGIN static uint8_t USBD_StrDesc[USBD_MAX_STR_DESC_SIZ] __ALIGN_END;
+
+// set the PID
+void USBD_SetPID(uint16_t pid) {
+    hUSBDDeviceDesc[10] = LOBYTE(pid);
+    hUSBDDeviceDesc[11] = HIBYTE(pid);
+}
+
+/**
+  * @brief  Returns the device descriptor.
+  * @param  speed: Current device speed
+  * @param  length: Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+STATIC uint8_t *USBD_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length) {
+    *length = sizeof(hUSBDDeviceDesc);
+    return hUSBDDeviceDesc;
+}
+
+/**
+  * @brief  Returns the LangID string descriptor.
+  * @param  speed: Current device speed
+  * @param  length: Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+STATIC uint8_t *USBD_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length) {
+    *length = sizeof(USBD_LangIDDesc);
+    return USBD_LangIDDesc;
+}
+
+/**
+  * @brief  Returns the product string descriptor.
+  * @param  speed: Current device speed
+  * @param  length: Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+STATIC uint8_t *USBD_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length) {
+    if(speed == 0) {
+        USBD_GetString((uint8_t *)USBD_PRODUCT_HS_STRING, USBD_StrDesc, length);
+    } else {
+        USBD_GetString((uint8_t *)USBD_PRODUCT_FS_STRING, USBD_StrDesc, length);
+    }
+    return USBD_StrDesc;
+}
+
+/**
+  * @brief  Returns the manufacturer string descriptor.
+  * @param  speed: Current device speed
+  * @param  length: Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+STATIC uint8_t *USBD_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length) {
+    USBD_GetString((uint8_t *)USBD_MANUFACTURER_STRING, USBD_StrDesc, length);
+    return USBD_StrDesc;
+}
+
+/**
+  * @brief  Returns the serial number string descriptor.
+  * @param  speed: Current device speed
+  * @param  length: Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+STATIC uint8_t *USBD_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length) {
+    if(speed == USBD_SPEED_HIGH) {
+        USBD_GetString((uint8_t *)USBD_SERIALNUMBER_HS_STRING, USBD_StrDesc, length);
+    } else {
+        USBD_GetString((uint8_t *)USBD_SERIALNUMBER_FS_STRING, USBD_StrDesc, length);
+    }
+    return USBD_StrDesc;
+}
+
+/**
+  * @brief  Returns the configuration string descriptor.
+  * @param  speed: Current device speed
+  * @param  length: Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+STATIC uint8_t *USBD_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length) {
+    if(speed == USBD_SPEED_HIGH) {
+        USBD_GetString((uint8_t *)USBD_CONFIGURATION_HS_STRING, USBD_StrDesc, length);
+    } else {
+        USBD_GetString((uint8_t *)USBD_CONFIGURATION_FS_STRING, USBD_StrDesc, length);
+    }
+    return USBD_StrDesc;
+}
+
+/**
+  * @brief  Returns the interface string descriptor.
+  * @param  speed: Current device speed
+  * @param  length: Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+STATIC uint8_t *USBD_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length) {
+    if(speed == 0) {
+        USBD_GetString((uint8_t *)USBD_INTERFACE_HS_STRING, USBD_StrDesc, length);
+    } else {
+        USBD_GetString((uint8_t *)USBD_INTERFACE_FS_STRING, USBD_StrDesc, length);
+    }
+    return USBD_StrDesc;
+}
+
+const USBD_DescriptorsTypeDef USBD_Descriptors = {
+    USBD_DeviceDescriptor,
+    USBD_LangIDStrDescriptor,
+    USBD_ManufacturerStrDescriptor,
+    USBD_ProductStrDescriptor,
+    USBD_SerialStrDescriptor,
+    USBD_ConfigStrDescriptor,
+    USBD_InterfaceStrDescriptor,
+};
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/