mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-19 04:48:12 +00:00
88 lines
3.0 KiB
C
88 lines
3.0 KiB
C
typedef struct __attribute__((packed)) {
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uint8_t bFunctionLength;
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uint8_t bDescriptorType;
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uint8_t bDescriptorSubtype;
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uint16_t bcdCDC;
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} usb_vcp_header_descriptor_t;
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typedef struct __attribute__((packed)) {
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uint8_t bFunctionLength;
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uint8_t bDescriptorType;
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uint8_t bDescriptorSubtype;
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uint8_t bmCapabilities;
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uint8_t bDataInterface;
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} usb_vcp_cm_descriptor_t;
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typedef struct __attribute__((packed)) {
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uint8_t bFunctionLength;
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uint8_t bDescriptorType;
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uint8_t bDescriptorSubtype;
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uint8_t bmCapabilities;
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} usb_vcp_acm_descriptor_t;
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typedef struct __attribute__((packed)) {
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uint8_t bFunctionLength;
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uint8_t bDescriptorType;
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uint8_t bDescriptorSubtype;
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uint8_t bControlInterface;
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uint8_t bSubordinateInterface0;
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} usb_vcp_union_descriptor_t;
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typedef struct __attribute__((packed)) {
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usb_interface_assoc_descriptor_t assoc;
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usb_interface_descriptor_t iface_cdc;
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usb_vcp_header_descriptor_t fheader; // Class-Specific Descriptor Header Format
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usb_vcp_cm_descriptor_t fcm; // Call Management Functional Descriptor
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usb_vcp_acm_descriptor_t facm; // Abstract Control Management Functional Descriptor
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usb_vcp_union_descriptor_t funion; // Union Interface Functional Descriptor
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usb_endpoint_descriptor_t ep_cmd;
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usb_interface_descriptor_t iface_data;
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usb_endpoint_descriptor_t ep_in;
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usb_endpoint_descriptor_t ep_out;
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} usb_vcp_descriptor_block_t;
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typedef struct {
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uint8_t iface_num; // Address of this VCP interface
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uint8_t data_iface_num; // Address of data interface of the VCP interface association
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uint8_t ep_cmd; // Address of IN CMD endpoint (with the highest bit set)
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uint8_t ep_in; // Address of IN endpoint (with the highest bit set)
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uint8_t ep_out; // Address of OUT endpoint
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uint8_t polling_interval; // In units of 1ms
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uint8_t max_cmd_packet_len;
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uint8_t max_data_packet_len;
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} usb_vcp_info_t;
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// typedef struct {
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// uint32_t cap;
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// uint32_t read;
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// uint32_t write;
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// uint8_t *buf;
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// } ring_buffer_t;
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typedef struct {
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uint8_t is_connected;
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uint8_t in_idle;
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// uint8_t cmd_op_code;
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// uint8_t cmd_length;
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// Configuration (copied from usb_vcp_info_t on init)
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uint8_t data_iface_num;
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uint8_t ep_cmd;
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uint8_t ep_in;
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uint8_t ep_out;
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uint8_t polling_interval;
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uint8_t max_cmd_packet_len;
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uint8_t max_data_packet_len;
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const usb_vcp_descriptor_block_t *desc_block;
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} usb_vcp_state_t;
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int usb_vcp_add(const usb_vcp_info_t *vcp_info);
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int usb_vcp_can_read(uint8_t iface_num);
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int usb_vcp_can_write(uint8_t iface_num);
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int usb_vcp_read(uint8_t iface_num, uint8_t *buf, uint32_t len);
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int usb_vcp_write(uint8_t iface_num, const uint8_t *buf, uint32_t len);
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int usb_vcp_read_blocking(uint8_t iface_num, uint8_t *buf, uint32_t len, uint32_t timeout);
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int usb_vcp_write_blocking(uint8_t iface_num, const uint8_t *buf, uint32_t len, uint32_t timeout);
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