How to code GSM-GPS Click Sim808 using STM32F446RE?

[JohnnyK (Jan Kamidra)]

How to convert unint_16 to char?

Hello, uint16_t has two bytes so you can not convert to char directly because char has only one byte. So you need something like uint16_t value = 12345; char lo = value & 0xFF; char hi = value >> 8; // or char buff[2]; buff[0] = value & 0xFF; buff[1] = value >> 8; // and so on BR, Jan

BR, Jan