de52b57041
Vendored and trimmed from microsoft/uf2-samdx1, adapted to the actual ATSAMD21G17D (128 KiB flash / 16 KiB RAM), fixing the flash/RAM-size mismatch that the previously commented-out SAM-BA bootloader target had (it assumed a 256 KiB SAMD21G18A). Builds as a standalone PlatformIO environment (bootloader/platformio.ini), no python2/make dependency. Compiles clean, fits in the 8 KiB bootloader region (7292/8192 bytes). Not yet flashed/verified on real hardware.
140 lines
3.9 KiB
C
140 lines
3.9 KiB
C
/* ----------------------------------------------------------------------------
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* SAM Software Package License
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* ----------------------------------------------------------------------------
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* Copyright (c) 2011-2014, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following condition is met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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#ifndef CDC_ENUMERATE_H
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#define CDC_ENUMERATE_H
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#define PKT_SIZE 64
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#define USB_EP_IN 1
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#define USB_EP_OUT 2
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#define USB_EP_COMM 3
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#define USB_EP_MSC_IN 4
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#define USB_EP_MSC_OUT 5
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#define USB_EP_HID 6
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#define USB_EP_WEB 7
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#define MAX_EP 8
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#define NVM_USB_PAD_TRANSN_POS 45
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#define NVM_USB_PAD_TRANSN_SIZE 5
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#define NVM_USB_PAD_TRANSP_POS 50
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#define NVM_USB_PAD_TRANSP_SIZE 5
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#define NVM_USB_PAD_TRIM_POS 55
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#define NVM_USB_PAD_TRIM_SIZE 3
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typedef struct _USB_CDC {
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// Private members
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uint8_t currentConfiguration;
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uint8_t currentConnection;
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} USB_CDC, *P_USB_CDC;
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typedef struct {
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uint32_t dwDTERate;
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uint8_t bCharFormat;
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uint8_t bParityType;
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uint8_t bDataBits;
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} usb_cdc_line_coding_t;
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/**
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* \brief Initializes the USB module
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*/
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void usb_init(void);
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/**
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* \brief Sends a single byte through USB CDC
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*
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* \param Data to send
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* \return number of data sent
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*/
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int cdc_putc(int value);
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/**
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* \brief Reads a single byte through USB CDC
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*
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* \return Data read through USB
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*/
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int cdc_getc(void);
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/**
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* \brief Checks if a character has been received on USB CDC
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*
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* \return \c 1 if a byte is ready to be read.
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*/
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bool cdc_is_rx_ready(void);
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/**
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* \brief Sends buffer on USB CDC
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*
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* \param data pointer
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* \param number of data to send
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* \return number of data sent
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*/
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uint32_t cdc_write_buf(void const *data, uint32_t length);
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uint32_t cdc_write_buf_xmd(void const *data, uint32_t length);
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/**
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* \brief Gets data on USB CDC
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*
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* \param data pointer
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* \param number of data to read
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* \return number of data read
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*/
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uint32_t cdc_read_buf(void *data, uint32_t length);
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/**
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* \brief Gets specified number of bytes on USB CDC
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*
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* \param data pointer
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* \param number of data to read
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* \return number of data read
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*/
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uint32_t cdc_read_buf_xmd(void *data, uint32_t length);
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void reset_ep(uint8_t ep);
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void stall_ep(uint8_t ep);
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typedef struct {
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uint8_t size;
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uint8_t ptr;
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uint8_t read_job;
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uint8_t padding;
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uint8_t buf[PKT_SIZE];
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} PacketBuffer __attribute__((aligned(4)));
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uint32_t USB_Read(void *pData, uint32_t length, uint32_t ep);
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uint32_t USB_Write(const void *pData, uint32_t length, uint8_t ep_num);
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uint32_t USB_WriteCore(const void *pData, uint32_t length, uint8_t ep_num, bool handoverMode);
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void USB_ReadBlocking(void *dst, uint32_t length, uint32_t ep, PacketBuffer *cache);
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uint32_t USB_ReadCore(void *pData, uint32_t length, uint32_t ep, PacketBuffer *cache);
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bool USB_Ok(void);
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#endif // CDC_ENUMERATE_H
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