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reduce crc size, change magic

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This commit is contained in:
Philippe Teuwen
2019-04-16 20:06:32 +02:00
parent 44bbb7d2c7
commit 43608589e3
1 changed files with 2 additions and 4 deletions
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6
include/usb_cmd.h
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@@ -41,14 +41,12 @@ typedef struct {
uint16_t cmd;
} PACKED UsbCommandNGPreamble;
#define USB_PREAMBLE_MAGIC 0xAA5500FF
#define USB_PREAMBLE_MAGIC 0x61334d50 // PM3a
typedef struct {
uint32_t crc;
uint16_t crc;
} PACKED UsbCommandNGPostamble;
#define USB_POSTAMBLE_MAGIC 0xFF0055AA
#define USB_PACKET_NG_MINLEN (sizeof(UsbCommandNGPreamble) + sizeof(UsbCommandNGPostamble))
#define USB_PACKET_NG_MAXLEN (sizeof(UsbCommandNGPreamble) + USB_CMD_DATA_SIZE + sizeof(UsbCommandNGPostamble))