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k64f - mac address - fix warnings - get UID via K64F SIM macros

pull/1797/head
0xc0170 2016-05-27 14:14:39 +01:00
parent cd9f9331dc
commit 04e4c6a880
1 changed files with 10 additions and 9 deletions
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19
hal/targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_K64F/TARGET_FRDM/mbed_overrides.c
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@ -44,18 +44,19 @@ void rtc_setup_oscillator(RTC_Type *base)
// Provide ethernet devices with a semi-unique MAC address from the UUID // Provide ethernet devices with a semi-unique MAC address from the UUID
void mbed_mac_address(char *mac) void mbed_mac_address(char *mac)
{ {
uint16_t MAC[3]; // 3 16 bits words for the MAC
unsigned int UUID_LOC_BASE = 0x40048054; // First adddress of the 4-word UUID // get UID via SIM_UID macros defined in the K64F MCU CMSIS header file
char uuid[16]; // So we can take a local copy of the UUID uint32_t UID[4];
uint32_t MAC[3]; // 3 16 bits words for the MAC UID[0] = SIM->UIDH;
UID[1] = SIM->UIDMH;
// copy the UUID to the variable MAC[] UID[2] = SIM->UIDML;
memcpy(uuid,(const void*)UUID_LOC_BASE,sizeof(uuid)); UID[3] = SIM->UIDL;
// generate three CRC16's using different slices of the UUID // generate three CRC16's using different slices of the UUID
MAC[0] = crcSlow(uuid, 8); // most significant half-word MAC[0] = crcSlow((const uint8_t *)UID, 8); // most significant half-word
MAC[1] = crcSlow(uuid, 12); MAC[1] = crcSlow((const uint8_t *)UID, 12);
MAC[2] = crcSlow(uuid, 16); // least significant half word MAC[2] = crcSlow((const uint8_t *)UID, 16); // least significant half word
// The network stack expects an array of 6 bytes // The network stack expects an array of 6 bytes
// so we copy, and shift and copy from the half-word array to the byte array // so we copy, and shift and copy from the half-word array to the byte array