Member Avatar for kent.johnstone

I need to convert a DWORD into 4 bytes to send to serial RAM. All the examples of using SPIRAM, EEPROM and FLASH use *variable to send and receive. I can break the DWORD down into bytes which I stuck in a char[3]. I don't, apparently even with all my books and Google, know how to convert to a *variable. How is this done?

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  • Latest Post Latest Post by Ancient Dragon
Member Avatar for Ancient Dragon

I always copied it into an unsigned char 4-byte buffer

DWORD dwValue = 123;
unsigned char buf[sizeof(DWORD)];
memcpy(buf,&dwValue, sizeof(DWORD);

Or you could just typecast a pointer
unsigned char* ptr = (unsigned char*)&dwValue;

Edited by Ancient Dragon
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