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Merge pull request #2743 from jeromecoutant/PR_STM32_MAC 

[STM32 NUCLEO] Init MAC address
pull/2808/head
Sam Grove 2016-09-24 16:40:13 -05:00 committed by GitHub
parent e0bf4153a4 f05e6200d3
commit 363c041c53
1 changed files with 28 additions and 0 deletions
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28
features/net/FEATURE_IPV4/lwip-interface/lwip-eth/arch/TARGET_STM/stm32xx_emac.c
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@ -431,3 +431,31 @@ void eth_arch_disable_interrupts(void)
{ {
NVIC_DisableIRQ(ETH_IRQn); NVIC_DisableIRQ(ETH_IRQn);
} }
/** This returns a unique 6-byte MAC address, based on the device UID
* This function overrides hal/common/mbed_interface.c function
* @param mac A 6-byte array to write the MAC address
*/
void mbed_mac_address(char *mac) {
unsigned char ST_mac_addr[3] = {0x00, 0x80, 0xe1}; // default STMicro mac address
// Read unic id
#if defined (TARGET_STM32F2)
uint32_t word0 = *(uint32_t *)0x1FFF7A10;
#elif defined (TARGET_STM32F4)
uint32_t word0 = *(uint32_t *)0x1FFF7A10;
#elif defined (TARGET_STM32F7)
uint32_t word0 = *(uint32_t *)0x1FF0F420;
#else
#error MAC address can not be derived from target unique Id
#endif
mac[0] = ST_mac_addr[0];
mac[1] = ST_mac_addr[1];
mac[2] = ST_mac_addr[2];
mac[3] = (word0 & 0x00ff0000) >> 16;
mac[4] = (word0 & 0x0000ff00) >> 8;
mac[5] = (word0 & 0x000000ff);
return;
}