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Code Issues Releases Activity

Create ID from a hashed CPU serial number.

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This commit is contained in:
Brian Webb 2012-04-07 19:41:23 -07:00
parent d39e89a096
commit e639d173a0
3 changed files with 12 additions and 3 deletions
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1
flight/PiOS/inc/pios_rfm22b_priv.h
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@ -48,7 +48,6 @@ struct pios_rfm22b_cfg {
uint8_t minPacketSize;
uint8_t txWinSize;
uint8_t maxConnections;
uint32_t id;
};
extern int32_t PIOS_RFM22B_Init(uint32_t *rfb22b_id, const struct pios_rfm22b_cfg *cfg);

12
flight/PipXtreme/System/pios_board.c
View File

@ -99,6 +99,18 @@ void PIOS_Board_Init(void) {
#endif /* PIOS_INCLUDE_TIM */
#if defined(PIOS_INCLUDE_PACKET_HANDLER)
// Create our (hopefully) unique 32 bit id from the processor serial number.
uint32_t crc32 = 0;
{
char serial_no_str[33];
PIOS_SYS_SerialNumberGet(serial_no_str);
// Create a 32 bit value using 4 8 bit CRC values.
crc32 = PIOS_CRC_updateCRC(0, (uint8_t*)serial_no_str, 8) << 24;
crc32 |= PIOS_CRC_updateCRC(0, (uint8_t*)serial_no_str + 8, 8) << 16;
crc32 |= PIOS_CRC_updateCRC(0, (uint8_t*)serial_no_str + 16, 8) << 8;
crc32 |= PIOS_CRC_updateCRC(0, (uint8_t*)serial_no_str + 24, 8);
}
pios_ph_cfg.id = crc32;
pios_packet_handler = PHInitialize(&pios_ph_cfg);
#endif /* PIOS_INCLUDE_PACKET_HANDLER */

2
flight/board_hw_defs/pipxtreme/board_hw_defs.c
View File

@ -488,7 +488,6 @@ const struct pios_rfm22b_cfg pios_rfm22b_cfg = {
.minPacketSize = 50,
.txWinSize = 4,
.maxConnections = 1,
.id = 0x36249acb
};
#endif /* PIOS_INCLUDE_RFM22B */
@ -500,7 +499,6 @@ const struct pios_rfm22b_cfg pios_rfm22b_cfg = {
PacketHandlerConfig pios_ph_cfg = {
.txWinSize = PIOS_PH_TX_WIN_SIZE,
.maxConnections = PIOS_PH_MAX_CONNECTIONS,
.id = 0x36249acb,
};
#endif /* PIOS_INCLUDE_PACKET_HANDLER */