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fx2 firmware: Mapping CDC-ACM to hardware UART.
Based on my CDC-to-UART example in fx2lib.
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,28 @@ | ||
| // The endpoint which data is sent **from** the host down to the CDC serial | ||
| // port. | ||
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| #define CDC_H2D_RESET(x) \ | ||
| RESET ## x(0x02); | ||
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| #define CDC_H2D_EP(x) \ | ||
| EP2 ## x | ||
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| #define bmCDC_H2D_EP(x) \ | ||
| bmEP2 ## x | ||
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| // The endpoint which data is sent **to** the host from the CDC serial port. | ||
| #define CDC_D2H_RESET(x) \ | ||
| RESET ## x(0x80|0x04); | ||
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| #define CDC_D2H_EP(x) \ | ||
| EP4 ## x | ||
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| #define bmCDC_D2H_EP(x) \ | ||
| bmEP4 ## x | ||
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| // The endpoint which is used to notify the host about the CDC state changes. | ||
| #define CDC_INT_EP(x) \ | ||
| EP1OUT ## x | ||
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| #define bmCDC_INT_EP(x) \ | ||
| bmEP1OUT ## x |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,12 +1,146 @@ | ||
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| #ifndef CDC_H | ||
| #define CDC_H | ||
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| #include <fx2types.h> | ||
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| #define SET_LINE_CODING (0x20) | ||
| #define GET_LINE_CODING (0x21) | ||
| #define SET_CONTROL_STATE (0x22) | ||
| #include "cdc-config.h" | ||
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| void cdcuser_receive_data(BYTE* data, WORD length); | ||
| BOOL cdcuser_set_line_rate(DWORD baud_rate); | ||
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| // Handles the "vendor commands" for a CDC device. | ||
| BOOL cdc_handle_command(BYTE cmd); | ||
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| //void cdc_setup(); | ||
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| // Send the CDC interrupt poll thingy. | ||
| void cdc_receive_poll(); | ||
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| // You are able to send data. | ||
| //BOOL cdc_can_send(); | ||
| #define cdc_can_send() \ | ||
| !(EP2468STAT & bmCDC_D2H_EP(FULL)) | ||
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| extern volatile WORD cdc_queued_bytes; | ||
| // Queue a byte in the output CDC data queue. | ||
| //void cdc_queue_data(BYTE data); | ||
| #define cdc_queue_data(data) \ | ||
| CDC_D2H_EP(FIFOBUF)[cdc_queued_bytes++] = data; | ||
| // Send all queue bytes from the output CDC data queue to the host. | ||
| //void cdc_send_queued_data(); | ||
| #define cdc_send_queued_data() \ | ||
| CDC_D2H_EP(BCH)=MSB(cdc_queued_bytes); \ | ||
| SYNCDELAY; \ | ||
| CDC_D2H_EP(BCL)=LSB(cdc_queued_bytes); \ | ||
| SYNCDELAY; \ | ||
| cdc_queued_bytes = 0; | ||
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| /* ------------------------------------------------------------------------ */ | ||
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| /** | ||
| * The defines and structures found below comes from the Linux kernel and are | ||
| * found in include/uapi/linux/usb/cdc.h | ||
| */ | ||
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| /* The 8051 is an 8bit processor, so doesn't actually have any endian | ||
| * naturally, instead the endian comes from the compiler. sdcc choses to be | ||
| * little endian, as does the USB specification. | ||
| */ | ||
| #define __u8 BYTE | ||
| #define __le16 WORD | ||
| #define __le32 DWORD | ||
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| // #define USB_CDC_SUBCLASS_ACM 0x02 | ||
| // #define USB_CDC_PROTO_NONE 0 | ||
| // #define USB_CDC_ACM_PROTO_AT_V25TER 1 | ||
| // #define USB_CDC_ACM_PROTO_AT_PCCA101 2 | ||
| // #define USB_CDC_ACM_PROTO_AT_PCCA101_WAKE 3 | ||
| // #define USB_CDC_ACM_PROTO_AT_GSM 4 | ||
| // #define USB_CDC_ACM_PROTO_AT_3G 5 | ||
| // #define USB_CDC_ACM_PROTO_AT_CDMA 6 | ||
| // #define USB_CDC_ACM_PROTO_VENDOR 0xff | ||
| // | ||
| // /* "Abstract Control Management Descriptor" from CDC spec 5.2.3.3 */ | ||
| // struct usb_cdc_acm_descriptor { | ||
| // __u8 bLength; | ||
| // __u8 bDescriptorType; | ||
| // __u8 bDescriptorSubType; | ||
| // | ||
| // __u8 bmCapabilities; | ||
| // /* capabilities from 5.2.3.3 */ | ||
| // #define USB_CDC_COMM_FEATURE 0x01 | ||
| // #define USB_CDC_CAP_LINE 0x02 | ||
| // #define USB_CDC_CAP_BRK 0x04 | ||
| // #define USB_CDC_CAP_NOTIFY 0x08 | ||
| // }; | ||
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| /* | ||
| * Class-Specific Control Requests (6.2) | ||
| * | ||
| * section 3.6.2.1 table 4 has the ACM profile, for modems. | ||
| * section 3.8.2 table 10 has the ethernet profile. | ||
| * | ||
| * Microsoft's RNDIS stack for Ethernet is a vendor-specific CDC ACM variant, | ||
| * heavily dependent on the encapsulated (proprietary) command mechanism. | ||
| */ | ||
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| //#define USB_CDC_SEND_ENCAPSULATED_COMMAND 0x00 | ||
| //#define USB_CDC_GET_ENCAPSULATED_RESPONSE 0x01 | ||
| #define USB_CDC_REQ_SET_LINE_CODING 0x20 | ||
| #define USB_CDC_REQ_GET_LINE_CODING 0x21 | ||
| #define USB_CDC_REQ_SET_CONTROL_LINE_STATE 0x22 | ||
| //#define USB_CDC_REQ_SEND_BREAK 0x23 | ||
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| /* Line Coding Structure from CDC spec 6.2.13 */ | ||
| struct usb_cdc_line_coding { | ||
| // __le32 dwDTERate; | ||
| __u8 bDTERate0; | ||
| __u8 bDTERate1; | ||
| __u8 bDTERate2; | ||
| __u8 bDTERate3; | ||
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| __u8 bCharFormat; | ||
| #define USB_CDC_1_STOP_BITS 0 | ||
| #define USB_CDC_1_5_STOP_BITS 1 | ||
| #define USB_CDC_2_STOP_BITS 2 | ||
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| __u8 bParityType; | ||
| #define USB_CDC_NO_PARITY 0 | ||
| #define USB_CDC_ODD_PARITY 1 | ||
| #define USB_CDC_EVEN_PARITY 2 | ||
| #define USB_CDC_MARK_PARITY 3 | ||
| #define USB_CDC_SPACE_PARITY 4 | ||
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| __u8 bDataBits; | ||
| }; | ||
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| // /* | ||
| // * Class-Specific Notifications (6.3) sent by interrupt transfers | ||
| // * | ||
| // * section 3.8.2 table 11 of the CDC spec lists Ethernet notifications | ||
| // * section 3.6.2.1 table 5 specifies ACM notifications, accepted by RNDIS | ||
| // * RNDIS also defines its own bit-incompatible notifications | ||
| // */ | ||
| // | ||
| // #define USB_CDC_NOTIFY_NETWORK_CONNECTION 0x00 | ||
| // #define USB_CDC_NOTIFY_RESPONSE_AVAILABLE 0x01 | ||
| // #define USB_CDC_NOTIFY_SERIAL_STATE 0x20 | ||
| // #define USB_CDC_NOTIFY_SPEED_CHANGE 0x2a | ||
| // | ||
| // struct usb_cdc_notification { | ||
| // __u8 bmRequestType; | ||
| // __u8 bNotificationType; | ||
| // __le16 wValue; | ||
| // __le16 wIndex; | ||
| // __le16 wLength; | ||
| // }; | ||
| // | ||
| // struct usb_cdc_speed_change { | ||
| // __le32 DLBitRRate; /* contains the downlink bit rate (IN pipe) */ | ||
| // __le32 ULBitRate; /* contains the uplink bit rate (OUT pipe) */ | ||
| // }; | ||
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| BOOL handleCDCCommand(BYTE cmd); | ||
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| #endif // CDC_H |
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