[Horus] SD Storage started. UI continued.
+ Some boyscout work on LCD functions
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/**
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******************************************************************************
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* @file usbd_cdc_vcp.c
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* @author MCD Application Team
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* @version V1.1.0
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* @date 19-March-2012
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* @brief Generic media access Layer.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT 2012 STMicroelectronics</center></h2>
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*
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* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.st.com/software_license_agreement_liberty_v2
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************
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*/
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#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
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#pragma data_alignment = 4
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#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
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#include "opentx.h"
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extern "C" {
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/* Includes ------------------------------------------------------------------*/
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#include "../Taranis/usb_conf.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* These are external variables imported from CDC core to be used for IN
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transfer management. */
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extern uint8_t APP_Rx_Buffer []; /* Write CDC received data in this buffer.
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These data will be sent over USB IN endpoint
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in the CDC core functions. */
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extern volatile uint32_t APP_Rx_ptr_in; /* Increment this pointer or roll it back to
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start address when writing received data
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in the buffer APP_Rx_Buffer. */
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extern volatile uint32_t APP_Rx_ptr_out;
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/* Private function prototypes -----------------------------------------------*/
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static uint16_t VCP_Init (void);
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static uint16_t VCP_DeInit (void);
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static uint16_t VCP_Ctrl (uint32_t Cmd, uint8_t* Buf, uint32_t Len);
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static uint16_t VCP_DataRx (uint8_t* Buf, uint32_t Len);
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// static uint16_t VCP_COMConfig(uint8_t Conf);
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CDC_IF_Prop_TypeDef VCP_fops =
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{
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VCP_Init,
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VCP_DeInit,
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VCP_Ctrl,
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0,
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VCP_DataRx
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};
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} // extern "C"
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bool cdcConnected = false;
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief VCP_Init
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* Initializes the Media on the STM32
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* @param None
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* @retval Result of the opeartion (USBD_OK in all cases)
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*/
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static uint16_t VCP_Init(void)
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{
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cdcConnected = true;
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return USBD_OK;
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}
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/**
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* @brief VCP_DeInit
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* DeInitializes the Media on the STM32
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* @param None
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* @retval Result of the opeartion (USBD_OK in all cases)
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*/
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static uint16_t VCP_DeInit(void)
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{
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cdcConnected = false;
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return USBD_OK;
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}
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/**
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* @brief VCP_Ctrl
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* Manage the CDC class requests
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* @param Cmd: Command code
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* @param Buf: Buffer containing command data (request parameters)
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* @param Len: Number of data to be sent (in bytes)
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* @retval Result of the opeartion (USBD_OK in all cases)
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*/
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static uint16_t VCP_Ctrl (uint32_t Cmd, uint8_t* Buf, uint32_t Len)
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{
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switch (Cmd)
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{
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case SEND_ENCAPSULATED_COMMAND:
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/* Not needed for this driver */
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break;
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case GET_ENCAPSULATED_RESPONSE:
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/* Not needed for this driver */
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break;
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case SET_COMM_FEATURE:
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/* Not needed for this driver */
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break;
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case GET_COMM_FEATURE:
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/* Not needed for this driver */
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break;
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case CLEAR_COMM_FEATURE:
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/* Not needed for this driver */
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break;
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case SET_LINE_CODING:
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/* Not needed for this driver */
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break;
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case GET_LINE_CODING:
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/* Not needed for this driver */
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break;
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case SET_CONTROL_LINE_STATE:
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/* Not needed for this driver */
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break;
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case SEND_BREAK:
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/* Not needed for this driver */
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break;
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default:
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break;
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}
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return USBD_OK;
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}
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// some debug vars
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uint16_t usbWraps = 0;
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uint16_t charsWritten = 0;
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void usbSerialPutc(uint8_t c)
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{
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if (!cdcConnected) return;
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uint32_t txDataLen;
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do {
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txDataLen = APP_RX_DATA_SIZE + APP_Rx_ptr_in - APP_Rx_ptr_out;
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if (txDataLen >= APP_RX_DATA_SIZE) {
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txDataLen -= APP_RX_DATA_SIZE;
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}
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} while (txDataLen >= (APP_RX_DATA_SIZE - CDC_DATA_MAX_PACKET_SIZE));
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APP_Rx_Buffer[APP_Rx_ptr_in] = c;
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++charsWritten;
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/* To avoid buffer overflow */
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if (APP_Rx_ptr_in >= APP_RX_DATA_SIZE-1) {
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APP_Rx_ptr_in = 0;
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++usbWraps;
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}
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else {
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APP_Rx_ptr_in++;
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}
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}
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/**
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* @brief VCP_DataRx
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* Data received over USB OUT endpoint is available here
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*
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* @note
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* This function will block any OUT packet reception on USB endpoint
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* until exiting this function. If you exit this function before transfer
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* is complete on CDC interface (ie. using DMA controller) it will result
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* in receiving more data while previous ones are still not sent.
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*
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* @note
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* This function is executed inside the USBD_OTG_ISR_Handler() interrupt handler!
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* @param Buf: Buffer of data to be received
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* @param Len: Number of data received (in bytes)
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* @retval Result of the opeartion: USBD_OK if all operations are OK else VCP_FAIL
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*/
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static uint16_t VCP_DataRx (uint8_t* Buf, uint32_t Len)
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{
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// TODO: try implementing inbound flow control:
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// if the cliRxFifo does not have enough free space to receive all
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// available characters, return VCP_FAIL. Maybe that will throttle down
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// the sender and we will receive the same packet at a later time.
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#if defined(CLI)
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//copy data to the application FIFO
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for (uint32_t i = 0; i < Len; i++)
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{
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cliRxFifo.push(Buf[i]);
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}
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#endif
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return USBD_OK;
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}
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// /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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