From 01dd7804b87d60b2deab16712eccb3b97351a9b7 Mon Sep 17 00:00:00 2001
From: Damien George
Date: Wed, 6 Sep 2017 13:40:51 +1000
Subject: ports: Make new ports/ sub-directory and move all ports there.
This is to keep the top-level directory clean, to make it clear what is
core and what is a port, and to allow the repository to grow with new ports
in a sustainable way.
---
stmhal/usbd_cdc_interface.c | 409 --------------------------------------------
1 file changed, 409 deletions(-)
delete mode 100644 stmhal/usbd_cdc_interface.c
(limited to 'stmhal/usbd_cdc_interface.c')
diff --git a/stmhal/usbd_cdc_interface.c b/stmhal/usbd_cdc_interface.c
deleted file mode 100644
index 3e107d418..000000000
--- a/stmhal/usbd_cdc_interface.c
+++ /dev/null
@@ -1,409 +0,0 @@
-/*
- * This file is part of the MicroPython project, http://micropython.org/
- *
- * Taken from ST Cube library and heavily modified. See below for original
- * copyright header.
- */
-
-/**
- ******************************************************************************
- * @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
- *
- * © COPYRIGHT(c) 2014 STMicroelectronics
- *
- * 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
-#include
-
-#include "usbd_cdc_msc_hid.h"
-#include "usbd_cdc_interface.h"
-#include "pendsv.h"
-
-#include "py/mpstate.h"
-#include "py/obj.h"
-#include "lib/utils/interrupt_char.h"
-#include "irq.h"
-#include "timer.h"
-#include "usb.h"
-
-// CDC control commands
-#define CDC_SEND_ENCAPSULATED_COMMAND 0x00
-#define CDC_GET_ENCAPSULATED_RESPONSE 0x01
-#define CDC_SET_COMM_FEATURE 0x02
-#define CDC_GET_COMM_FEATURE 0x03
-#define CDC_CLEAR_COMM_FEATURE 0x04
-#define CDC_SET_LINE_CODING 0x20
-#define CDC_GET_LINE_CODING 0x21
-#define CDC_SET_CONTROL_LINE_STATE 0x22
-#define CDC_SEND_BREAK 0x23
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-#define APP_RX_DATA_SIZE 1024 // this must be 2 or greater, and a power of 2
-#define APP_TX_DATA_SIZE 1024 // I think this can be any value (was 2048)
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-
-static __IO uint8_t dev_is_connected = 0; // indicates if we are connected
-
-static uint8_t cdc_rx_packet_buf[CDC_DATA_FS_MAX_PACKET_SIZE]; // received data from USB OUT endpoint is stored in this buffer
-static uint8_t cdc_rx_user_buf[APP_RX_DATA_SIZE]; // received data is buffered here until the user reads it
-static volatile uint16_t cdc_rx_buf_put = 0; // circular buffer index
-static uint16_t cdc_rx_buf_get = 0; // circular buffer index
-
-static uint8_t UserTxBuffer[APP_TX_DATA_SIZE]; // data for USB IN endpoind is stored in this buffer
-static uint16_t UserTxBufPtrIn = 0; // increment this pointer modulo APP_TX_DATA_SIZE when new data is available
-static __IO uint16_t UserTxBufPtrOut = 0; // increment this pointer modulo APP_TX_DATA_SIZE when data is drained
-static uint16_t UserTxBufPtrOutShadow = 0; // shadow of above
-static uint8_t UserTxBufPtrWaitCount = 0; // used to implement a timeout waiting for low-level USB driver
-static uint8_t UserTxNeedEmptyPacket = 0; // used to flush the USB IN endpoint if the last packet was exactly the endpoint packet size
-
-/* Private function prototypes -----------------------------------------------*/
-static int8_t CDC_Itf_Init (USBD_HandleTypeDef *pdev);
-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 (USBD_HandleTypeDef *pdev, uint8_t* pbuf, uint32_t *Len);
-
-const 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(USBD_HandleTypeDef *pdev) {
- USBD_CDC_SetTxBuffer(pdev, UserTxBuffer, 0);
- USBD_CDC_SetRxBuffer(pdev, cdc_rx_packet_buf);
-
- cdc_rx_buf_put = 0;
- cdc_rx_buf_get = 0;
-
- 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) {
- 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:
- #if 0
- 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 */
- #endif
- break;
-
- case CDC_GET_LINE_CODING:
- /* Add your code here */
- pbuf[0] = (uint8_t)(115200);
- pbuf[1] = (uint8_t)(115200 >> 8);
- pbuf[2] = (uint8_t)(115200 >> 16);
- pbuf[3] = (uint8_t)(115200 >> 24);
- pbuf[4] = 0; // stop bits (1)
- pbuf[5] = 0; // parity (none)
- pbuf[6] = 8; // number of bits (8)
- break;
-
- case CDC_SET_CONTROL_LINE_STATE:
- dev_is_connected = length & 1; // wValue is passed in Len (bit of a hack)
- break;
-
- case CDC_SEND_BREAK:
- /* Add your code here */
- break;
-
- default:
- break;
- }
-
- return USBD_OK;
-}
-
-// This function is called to process outgoing data. We hook directly into the
-// SOF (start of frame) callback so that it is called exactly at the time it is
-// needed (reducing latency), and often enough (increasing bandwidth).
-void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd) {
- if (!dev_is_connected) {
- // CDC device is not connected to a host, so we are unable to send any data
- return;
- }
-
- if (UserTxBufPtrOut == UserTxBufPtrIn && !UserTxNeedEmptyPacket) {
- // No outstanding data to send
- return;
- }
-
- if (UserTxBufPtrOut != UserTxBufPtrOutShadow) {
- // We have sent data and are waiting for the low-level USB driver to
- // finish sending it over the USB in-endpoint.
- // SOF occurs every 1ms, so we have a 500 * 1ms = 500ms timeout
- // We have a relatively large timeout because the USB host may be busy
- // doing other things and we must give it a chance to read our data.
- if (UserTxBufPtrWaitCount < 500) {
- USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
- if (USBx_INEP(CDC_IN_EP & 0x7f)->DIEPTSIZ & USB_OTG_DIEPTSIZ_XFRSIZ) {
- // USB in-endpoint is still reading the data
- UserTxBufPtrWaitCount++;
- return;
- }
- }
- UserTxBufPtrOut = UserTxBufPtrOutShadow;
- }
-
- if (UserTxBufPtrOutShadow != UserTxBufPtrIn || UserTxNeedEmptyPacket) {
- uint32_t buffptr;
- uint32_t buffsize;
-
- if (UserTxBufPtrOutShadow > UserTxBufPtrIn) { // rollback
- buffsize = APP_TX_DATA_SIZE - UserTxBufPtrOutShadow;
- } else {
- buffsize = UserTxBufPtrIn - UserTxBufPtrOutShadow;
- }
-
- buffptr = UserTxBufPtrOutShadow;
-
- USBD_CDC_SetTxBuffer(hpcd->pData, (uint8_t*)&UserTxBuffer[buffptr], buffsize);
-
- if (USBD_CDC_TransmitPacket(hpcd->pData) == USBD_OK) {
- UserTxBufPtrOutShadow += buffsize;
- if (UserTxBufPtrOutShadow == APP_TX_DATA_SIZE) {
- UserTxBufPtrOutShadow = 0;
- }
- UserTxBufPtrWaitCount = 0;
-
- // According to the USB specification, a packet size of 64 bytes (CDC_DATA_FS_MAX_PACKET_SIZE)
- // gets held at the USB host until the next packet is sent. This is because a
- // packet of maximum size is considered to be part of a longer chunk of data, and
- // the host waits for all data to arrive (ie, waits for a packet < max packet size).
- // To flush a packet of exactly max packet size, we need to send a zero-size packet.
- // See eg http://www.cypress.com/?id=4&rID=92719
- UserTxNeedEmptyPacket = (buffsize > 0 && buffsize % CDC_DATA_FS_MAX_PACKET_SIZE == 0 && UserTxBufPtrOutShadow == UserTxBufPtrIn);
- }
- }
-}
-
-/**
- * @brief CDC_Itf_DataRx
- * Data received over USB OUT endpoint is processed here.
- * @param Buf: Buffer of data received
- * @param Len: Number of data received (in bytes)
- * @retval Result of the opeartion: USBD_OK if all operations are OK else USBD_FAIL
- * @note The buffer we are passed here is just cdc_rx_packet_buf, so we are
- * free to modify it.
- */
-static int8_t CDC_Itf_Receive(USBD_HandleTypeDef *pdev, uint8_t* Buf, uint32_t *Len) {
- // copy the incoming data into the circular buffer
- for (uint8_t *src = Buf, *top = Buf + *Len; src < top; ++src) {
- if (mp_interrupt_char != -1 && *src == mp_interrupt_char) {
- pendsv_kbd_intr();
- } else {
- uint16_t next_put = (cdc_rx_buf_put + 1) & (APP_RX_DATA_SIZE - 1);
- if (next_put == cdc_rx_buf_get) {
- // overflow, we just discard the rest of the chars
- break;
- }
- cdc_rx_user_buf[cdc_rx_buf_put] = *src;
- cdc_rx_buf_put = next_put;
- }
- }
-
- // initiate next USB packet transfer
- USBD_CDC_SetRxBuffer(pdev, cdc_rx_packet_buf);
- USBD_CDC_ReceivePacket(pdev);
-
- return USBD_OK;
-}
-
-int USBD_CDC_IsConnected(void) {
- return dev_is_connected;
-}
-
-int USBD_CDC_TxHalfEmpty(void) {
- int32_t tx_waiting = (int32_t)UserTxBufPtrIn - (int32_t)UserTxBufPtrOut;
- if (tx_waiting < 0) {
- tx_waiting += APP_TX_DATA_SIZE;
- }
- return tx_waiting <= APP_TX_DATA_SIZE / 2;
-}
-
-// timout in milliseconds.
-// Returns number of bytes written to the device.
-int USBD_CDC_Tx(const uint8_t *buf, uint32_t len, uint32_t timeout) {
- for (uint32_t i = 0; i < len; i++) {
- // Wait until the device is connected and the buffer has space, with a given timeout
- uint32_t start = HAL_GetTick();
- while (!dev_is_connected || ((UserTxBufPtrIn + 1) & (APP_TX_DATA_SIZE - 1)) == UserTxBufPtrOut) {
- // Wraparound of tick is taken care of by 2's complement arithmetic.
- if (HAL_GetTick() - start >= timeout) {
- // timeout
- return i;
- }
- if (query_irq() == IRQ_STATE_DISABLED) {
- // IRQs disabled so buffer will never be drained; return immediately
- return i;
- }
- __WFI(); // enter sleep mode, waiting for interrupt
- }
-
- // Write data to device buffer
- UserTxBuffer[UserTxBufPtrIn] = buf[i];
- UserTxBufPtrIn = (UserTxBufPtrIn + 1) & (APP_TX_DATA_SIZE - 1);
- }
-
- // Success, return number of bytes read
- return len;
-}
-
-// Always write all of the data to the device tx buffer, even if the
-// device is not connected, or if the buffer is full. Has a small timeout
-// to wait for the buffer to be drained, in the case the device is connected.
-void USBD_CDC_TxAlways(const uint8_t *buf, uint32_t len) {
- for (int i = 0; i < len; i++) {
- // If the CDC device is not connected to the host then we don't have anyone to receive our data.
- // The device may become connected in the future, so we should at least try to fill the buffer
- // and hope that it doesn't overflow by the time the device connects.
- // If the device is not connected then we should go ahead and fill the buffer straight away,
- // ignoring overflow. Otherwise, we should make sure that we have enough room in the buffer.
- if (dev_is_connected) {
- // If the buffer is full, wait until it gets drained, with a timeout of 500ms
- // (wraparound of tick is taken care of by 2's complement arithmetic).
- uint32_t start = HAL_GetTick();
- while (((UserTxBufPtrIn + 1) & (APP_TX_DATA_SIZE - 1)) == UserTxBufPtrOut && HAL_GetTick() - start <= 500) {
- if (query_irq() == IRQ_STATE_DISABLED) {
- // IRQs disabled so buffer will never be drained; exit loop
- break;
- }
- __WFI(); // enter sleep mode, waiting for interrupt
- }
-
- // Some unused code that makes sure the low-level USB buffer is drained.
- // Waiting for low-level is handled in HAL_PCD_SOFCallback.
- /*
- start = HAL_GetTick();
- PCD_HandleTypeDef *hpcd = hUSBDDevice.pData;
- if (hpcd->IN_ep[0x83 & 0x7f].is_in) {
- //volatile uint32_t *xfer_count = &hpcd->IN_ep[0x83 & 0x7f].xfer_count;
- //volatile uint32_t *xfer_len = &hpcd->IN_ep[0x83 & 0x7f].xfer_len;
- USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
- while (
- // *xfer_count < *xfer_len // using this works
- // (USBx_INEP(3)->DIEPTSIZ & USB_OTG_DIEPTSIZ_XFRSIZ) // using this works
- && HAL_GetTick() - start <= 2000) {
- __WFI(); // enter sleep mode, waiting for interrupt
- }
- }
- */
- }
-
- UserTxBuffer[UserTxBufPtrIn] = buf[i];
- UserTxBufPtrIn = (UserTxBufPtrIn + 1) & (APP_TX_DATA_SIZE - 1);
- }
-}
-
-// Returns number of bytes in the rx buffer.
-int USBD_CDC_RxNum(void) {
- int32_t rx_waiting = (int32_t)cdc_rx_buf_put - (int32_t)cdc_rx_buf_get;
- if (rx_waiting < 0) {
- rx_waiting += APP_RX_DATA_SIZE;
- }
- return rx_waiting;
-}
-
-// timout in milliseconds.
-// Returns number of bytes read from the device.
-int USBD_CDC_Rx(uint8_t *buf, uint32_t len, uint32_t timeout) {
- // loop to read bytes
- for (uint32_t i = 0; i < len; i++) {
- // Wait until we have at least 1 byte to read
- uint32_t start = HAL_GetTick();
- while (cdc_rx_buf_put == cdc_rx_buf_get) {
- // Wraparound of tick is taken care of by 2's complement arithmetic.
- if (HAL_GetTick() - start >= timeout) {
- // timeout
- return i;
- }
- if (query_irq() == IRQ_STATE_DISABLED) {
- // IRQs disabled so buffer will never be filled; return immediately
- return i;
- }
- __WFI(); // enter sleep mode, waiting for interrupt
- }
-
- // Copy byte from device to user buffer
- buf[i] = cdc_rx_user_buf[cdc_rx_buf_get];
- cdc_rx_buf_get = (cdc_rx_buf_get + 1) & (APP_RX_DATA_SIZE - 1);
- }
-
- // Success, return number of bytes read
- return len;
-}
--
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